QuickLinks -- Click here to rapidly navigate through this document

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-Q


ý
QUARTERLY REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934

For the Quarterly Period Ended March 31, 2005

Commission File Number: 0-23413

INTERLEUKIN GENETICS, INC.
(Name of Registrant in its Charter)

Delaware
(State or other jurisdiction of
incorporation or organization)		   94-3123681
(I.R.S. Employer
Identification No.)

135 Beaver Street, Waltham, MA
(Address of principal executive offices)
 
02452
(Zip Code)

Registrant's Telephone Number: (781) 398-0700

Securities registered pursuant to Section 12(b) of the Exchange Act:

Common Stock, $0.001 par value per share
 
Boston Stock Exchange

Securities registered pursuant to Section 12(g) of the Exchange Act:

Common Stock, $0.001 par value per share

        Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý    No o

        Indicate by check mark whether the registrant is an accelerated filer (as defined in Rule 12b-2 of the Act). Yes ý    No o.

        As of April 25, 2005, there were 23,644,527 shares of the Registrant's Common Stock and 5,000,000 shares of the Registrant's Series A Preferred Stock, issued and outstanding.


TABLE OF CONTENTS

 
    
   Page
PART I—FINANCIAL INFORMATION    

Item 1.
 
Financial Statements of Interleukin Genetics, Inc. and Subsidiary
 
 
    Consolidated Balance Sheets as of March 31, 2005 (Unaudited) and December 31, 2004 (Audited)   2
    Consolidated Statements of Operations (Unaudited)   3
    Consolidated Statements of Cash Flows (Unaudited)   4
    Notes to Interim Consolidated Financial Statements (Unaudited)   5

Item 2.
 
Management's Discussion and Analysis of Financial Condition and Results of Operations
 
17

Item 3.
 
Quantitative and Qualitative Disclosures About Market Risk
 
29

Item 4.
 
Controls and Procedures
 
30

PART II—OTHER INFORMATION
 
 

Item 1.
 
Legal Proceedings
 
31

Item 2.
 
Unregistered Sales of Equity Securities and Use of Proceeds
 
31

Item 3.
 
Defaults Upon Senior Securities
 
31

Item 4.
 
Submission of Matters to a Vote of Security Holders
 
31

Item 5.
 
Other Information
 
31

Item 6.
 
Exhibits
 
31

Signatures
 
32

Exhibit Index
 
33


PART I—FINANCIAL INFORMATION

Item 1. Financial Statements.

INTERLEUKIN GENETICS, INC. AND SUBSIDIARY
CONSOLIDATED BALANCE SHEETS

 
   March 31,
2005
   December 31,
2004
  
 
   (Unaudited)

   (Audited)

  
ASSETS              
Current assets:              
  Cash and cash equivalents   $ 3,093,944   $ 4,528,425  
  Accounts receivable, net of allowance for doubtful accounts of $0 in 2005 and 2004     889     10,131  
  Prepaid expenses and other current assets     159,650     182,819  
   
 
 
    Total current assets     3,254,483     4,721,375  
Fixed assets, net     1,078,487     1,142,087  
Other assets     343,060     322,039  
   
 
 
    Total Assets   $ 4,676,030   $ 6,185,501  
   
 
 

LIABILITIES AND STOCKHOLDERS' EQUITY
 
 
 
 
 
 
 

Current liabilities:
 
 
 
 
 
 
 
  Accounts payable   $ 82,572   $ 94,780  
  Accrued expenses     676,427     914,907  
  Deferred revenue     8,760     12,760  
  Commitments for funded research and development projects     408,544     408,544  
  Current portion of capital lease obligations     11,596     14,312  
   
 
 
    Total current liabilities     1,187,899     1,445,303  

Long-term notes payable
 
 
1,325,181
 
 
1,209,713
 
Capital lease obligations, less current portion     —     2,978  
   
 
 
    Total liabilities     2,513,080     2,657,994  

Stockholders' equity:
 
 
 
 
 
 
 
  Convertible preferred stock, Series A $0.001 par value—6,000,000 shares authorized; 5,000,000 issued and outstanding at March 31, 2005 and December 31, 2004; aggregate liquidation preference of $18,000,000 at March 31, 2005     5,000     5,000  
  Common stock, $0.001 par value—75,000,000 shares authorized; 23,636,527 and 23,594,337 shares issued and outstanding at March 31, 2005 and December 31, 2004, respectively     23,636     23,595  
  Additional paid-in capital     58,274,234     58,123,868  
  Accumulated deficit     (56,139,920 )   (54,624,956 )
   
 
 
    Total stockholders' equity     2,162,950     3,527,507  
   
 
 
    Total liabilities and stockholders' equity   $ 4,676,030   $ 6,185,501  
   
 
 

The accompanying notes are an integral part of these consolidated financial statements.

2

INTERLEUKIN GENETICS, INC. AND SUBSIDIARY
CONSOLIDATED STATEMENTS OF OPERATIONS
(Unaudited)

 
   For the Three Months Ended
March 31,
  
 
   2005
   2004
  
 
    
   (As Restated)

  
Revenue   $ 7,359   $ 8,343  
Cost of revenue     —     55  
   
 
 
  Gross profit     7,359     8,288  
   
 
 

Operating Expenses:
 
 
 
 
 
 
 
  Research and development     684,003     825,035  
  Selling, general and administrative     703,939     724,678  
   
 
 
    Total operating expenses     1,387,942     1,549,713  
   
 
 
  Loss from operations     (1,380,583 )   (1,541,425 )
   
 
 

Other income (expense):
 
 
 
 
 
 
 
  Interest income     21,473     9,551  
  Interest expense     (40,386 )   (33,688 )
  Amortization of note discount     (115,468 )   (115,469 )
   
 
 
    Total other income (expense)     (134,381 )   (139,606 )
   
 
 
Net loss   $ (1,514,964 ) $ (1,681,031 )
   
 
 
Basic and diluted net loss per common share   $ (0.06 ) $ (0.07 )
   
 
 
Weighted average common shares outstanding     23,604,882     23,323,069  
   
 
 

The accompanying notes are an integral part of these consolidated financial statements.

3

INTERLEUKIN GENETICS, INC. AND SUBSIDIARY
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Unaudited)

 
   For the Three Months Ended
March 31,
  
 
   2005
   2004
  
 
    
   (As Restated)

  
CASH FLOWS FROM OPERATING ACTIVITIES:              
  Net loss   $ (1,514,964 ) $ (1,681,031 )
  Adjustments to reconcile net loss to net cash used in operating activities:              
    Depreciation and amortization     80,957     26,444  
    Amortization of note discount     115,468     115,469  
    Changes in operating assets and liabilities:              
    Accounts receivable, net     9,242     2,310  
    Prepaid expenses and other current assets     23,169     27,624  
    Accounts payable     (12,208 )   14,403  
    Accrued expenses     (238,480 )   43,963  
    Deferred revenue     (4,000 )   (4,000 )
   
 
 
  Net cash used in operating activities     (1,540,816 )   (1,454,818 )
   
 
 

CASH FLOWS FROM INVESTING ACTIVITIES:
 
 
 
 
 
 
 
  Purchases of fixed assets     (9,187 )   (3,059 )
  Increase in other assets     (29,191 )   (45,324 )
   
 
 
  Net cash used in investing activities     (38,378 )   (48,383 )
   
 
 

CASH FLOWS FROM FINANCING ACTIVITIES:
 
 
 
 
 
 
 
  Proceeds from investment by Alticor     65,500     2,749,038  
  Proceeds from exercises of warrants and stock options     83,860     486,370  
  Proceeds from employee stock purchase plan     1,047     9,399  
  Principal payments of capital lease obligations, net     (5,694 )   (6,244 )
   
 
 
  Net cash provided by financing activities     144,713     3,238,563  
   
 
 
Net (decrease) increase in cash and cash equivalents     (1,434,481 )   1,735,362  

Cash and cash equivalents, beginning of period
 
 
4,528,425
 
 
4,759,453
 
   
 
 
Cash and cash equivalents, end of period   $ 3,093,944   $ 6,494,815  
   
 
 

Supplemental disclosures of cash flow information:
 
 
 
 
 
 
 
  Cash paid for interest   $ 40,386   $ 33,688  
   
 
 
  Cash paid for income taxes   $ —   $ —  
   
 
 

The accompanying notes are an integral part of these consolidated financial statements.

4


INTERLEUKIN GENETICS, INC. AND SUBSIDIARY

NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 1. Basis of Presentation

        The accompanying unaudited interim consolidated financial statements include the accounts of Interleukin Genetics, Inc. and its wholly-owned subsidiary, Interleukin Genetics Laboratory Services, Inc., (collectively referred to as the "Company" or "Interleukin") as of March 31, 2005 and have been prepared by the Company in accordance with accounting principles generally accepted in the United States of America for interim financial reporting and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and notes required by generally accepted accounting principles for complete financial statements. All intercompany accounts and transactions have been eliminated. These unaudited interim consolidated financial statements, which, in the opinion of management, reflect all adjustments (including normal recurring adjustments) necessary for a fair presentation, should be read in conjunction with the financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2004. Operating results for the three months ended March 31, 2005 are not necessarily indicative of the results that may be expected for any future interim period or for the entire fiscal year.

Note 2. Restatement of Consolidated Financial Statements

        The accompanying consolidated financial statements for the three months ended March 31, 2004 have been restated to properly account for the transaction entered into with Alticor, Inc and its affiliates on March 5, 2003.

        In a private placement on March 5, 2003, the Company entered into a Stock Purchase Agreement with Pyxis Innovations, Inc., a subsidiary of Alticor, pursuant to which Pyxis purchased from the Company 5,000,000 of the Company's Series A Preferred Stock, $0.001 per share, for $7,000,000 in cash and $2,000,000 in cash to be paid, if at all, upon the Company reaching a milestone pursuant to the terms of the Stock Purchase Agreement. The Series A Preferred Stock issued in the private placement were initially convertible into 28,157,683 shares of the Company's Common Stock at the purchaser's discretion. Pursuant to the terms of the Stock Purchase Agreement, Pyxis agreed to refinance, in the form of convertible debt, certain of the Company's indebtedness in the form of previously issued promissory notes that were held by Pyxis and certain individuals. This ultimately amounted to $2,595,336 in debt refinanced and was initially convertible into 5,219,903 shares of the Company's Common Stock. Concurrent with the closing of the Stock Purchase Agreement, the Company entered into a research agreement with an affiliate of Pyxis that would provide additional funding of $5,000,000 to be paid quarterly over a two-year period.

        In accordance with Emerging Issues Task Force (EITF) No. 01-1, Accounting for Convertible Instruments Granted or Issued to a Nonemployee for Goods or Services or a Combination of Goods or Services and Cash (EITF No. 01-1), the terms of both the agreement for goods or services provided and the convertible instrument should be evaluated to determine whether their separately stated pricing is equal to the fair value of the goods or services provided and the convertible instrument. If that is not the case, the terms of the respective transactions should be adjusted. The convertible instrument should be recognized at its fair value with a corresponding increase or decrease in the sales price of the goods or services.

        On March 5, 2003, the Company was obligated to issue up to 33,377,586 shares of its common stock underlying the convertible preferred stock and the convertible debt issued. Based on a last

5


reported trade price of $0.71 per common share of the Company's common stock on March 5, 2003, the convertible instruments had a fair value of $23,698,086 on the date of issuance. Based on the fair value of the convertible instruments and the guidance provided by EITF 01-1, the Company will recognize the fair value of the convertible instruments, to the extent of proceeds received, with a corresponding decrease to the sales price of the goods and services provided. Therefore, at March 5, 2003, the Company treated the $5,000,000 committed research funding as an equity investment rather than revenue and any costs of performing the research services under the agreement will be classified as research and development expenses. Any subsequent proceeds that the Company will receive from Alticor that are linked to the March 2003 transaction, will be considered equity rather than revenue to the extent of the fair value of the convertible instruments at March 5, 2003. During 2003 and the three months ended March 31, 2004, the Company received various purchase orders from Alticor valued at $141,800 to conduct genotyping tests for research purposes. These purchase orders are deemed to be linked to the March 2003 transaction, and accordingly are treated as equity rather than revenue. The effect of this treatment resulted in an increase to net loss for the three months ended March 31, 2004 of $636,600, or $0.03 per common share.

        In accordance with EITF No. 00-27, Application of Issue No. 98-5 to Certain Convertible Instruments (EITF No. 00-27), the Company determined that the convertible preferred debt issued on March 5, 2003 contained a beneficial conversion feature. Based on the effective conversion price of the convertible debt of $0.2875 (which was determined by allocating the proceeds received on March 5, 2003 of $9,595,336 based on the relative fair value of the convertible securities issued, or $8,094,727 to the convertible preferred stock and $1,500,609 to the convertible debt) and the market value per share of $0.71 at March 5, 2003, the intrinsic value was calculated to be $2,205,522; however in accordance with EITF No. 00-27, the amount of the discount allocated to the beneficial conversion feature is limited to the amount of the proceeds allocated to the instrument. The beneficial conversion feature resulted in a discount of the convertible debt of $1,500,609 at March 5, 2003. The amount of the discount allocated to the beneficial conversion feature of the convertible debt is amortized from the date of issuance to the earlier of maturity or the actual conversion date. Therefore, the Company charged $77,617 to amortization of note discount for the three months ended March 31, 2004 which resulted in an increase to net loss for the three months ended March 31, 2004 of $77,617, or less than $0.01 per common share.

        In addition, the convertible debt has a stated interest rate of prime plus 1%. However, the promissory notes, which were refinanced with the convertible debt, originally had a stated interest rate of 15%. Therefore, the Company determined the fair value of the convertible debt, using an interest rate comparable to that of the refinanced promissory notes, at $1,863,553. The resulting discount of $731,783 is amortized from the date of issuance to the earlier of maturity or conversion date. Therefore, the Company charged $37,852 to amortization of note discount for the three months ended March 31, 2004 which resulted in an increase to net loss for the three months ended March 31, 2004 of $37,852, or less than $0.01 per common share.

        The following table presents the financial statement adjustments on the Company's previously reported consolidated statement of operations for the three months ended March 31, 2004.

6

 
   As Reported
   As Restated
  
Revenue   $ 644,943   $ 8,343  
Cost of revenue     485,130     55  
   
 
 
  Gross profit     159,813     8,288  
   
 
 

Operating expenses:
 
 
 
 
 
 
 
  Research and development     381,260     825,035  
  Selling, general and administrative     683,378     724,678  
   
 
 
    Total operating expenses     1,064,638     1,549,713  
   
 
 
Loss from operations     (904,825 )   (1,541,425 )

Other income (expense):
 
 
 
 
 
 
 
  Interest income     9,551     9,551  
  Interest expense     (33,688 )   (33,688 )
  Amortization of note discount     —     (115,469 )
   
 
 
    Total other incom(expense)     (24,137 )   (139,606 )
   
 
 
Net loss   $ (928,962 ) $ (1,681,031 )
   
 
 
Basic and diluted net loss per common share   $ (0.04 ) $ (0.07 )
   
 
 
Weighted average common shares outstanding     23,323,069     23,323,069  
   
 
 

Note 3. Significant Accounting Policies

        The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements, as well as the reported amounts of revenue and expenses during the reported periods. Actual results could differ from those estimates. The Company's most critical accounting policies are in the areas of its strategic alliance with Alticor, stock-based compensation, income taxes, intellectual property, beneficial conversion feature of convertible instruments and the fair value of the convertible debt. These critical accounting policies are more fully discussed in these notes to consolidated financial statements.

        In a private placement on March 5, 2003, the Company entered into a Stock Purchase Agreement with Pyxis Innovations, Inc., a subsidiary of Alticor, pursuant to which Pyxis purchased from the Company 5,000,000 of the Company's Series A Preferred Stock, $0.001 per share, for $7,000,000 in cash and $2,000,000 in cash to be paid, if at all, upon the Company reaching a milestone pursuant to the terms of the Stock Purchase Agreement. The Series A Preferred Stock issued in the private placement were initially convertible into 28,157,683 shares of the Company's Common Stock at the purchaser's discretion. Pursuant to the terms of the Stock Purchase Agreement, Pyxis agreed to refinance in the

7

form of convertible debt certain of the Company's indebtedness in the form of previously issued promissory notes that were held by Pyxis and certain individuals. This ultimately amounted to $2,595,336 in debt refinanced and was initially convertible into 5,219,903 shares of the Company's Common Stock. Concurrent with the closing of the Stock Purchase Agreement, the Company entered into a research agreement with an affiliate of Pyxis that would provide additional funding of $5,000,000 to be paid quarterly over a two-year period.

        In accordance with EITF No. 01-1 the terms of both the agreement for goods or services provided and the convertible instrument should be evaluated to determine whether their separately stated pricing is equal to the fair value of the goods or services provided and the convertible instrument. If that is not the case, the terms of the respective transactions should be adjusted. The convertible instrument should be recognized at its fair value with a corresponding increase or decrease in the sales price of the goods or services.

        On March 5, 2003, the Company was obligated to issue up to 33,377,586 shares of its common stock underlying the convertible preferred stock and the convertible debt issued. Based on a last reported trade price of $0.71 per common share of the Company's common stock on March 5, 2003, the convertible instruments had a fair value of $23,698,086 on the date of issuance. Based on the fair value of the convertible instruments and the guidance provided by EITF 01-1, the Company will recognize the fair value of the convertible instruments, to the extent of proceeds received, with a corresponding decrease to the sales price of the goods and services provided. Therefore, at March 5, 2003, the Company treated the $5,000,000 committed research funding as an equity investment rather than revenue and any costs of performing the research services under the agreement were classified as research and development expenses. Any subsequent proceeds that the Company will receive from Alticor that are linked to the March 2003 transaction, will be considered equity rather than revenue to the extent of the fair value of the convertible instruments at March 5, 2003. In June 2004, the Company entered into another research agreement with Alticor for potential funding up to $2,200,000. In addition, since March 5, 2003, the Company received various purchase orders from Alticor valued at $501,800 to conduct genotyping test for research purposes. These purchase orders, together with the research agreement entered into in June 2004, are deemed to be linked to the March 2003 transaction, and accordingly are treated as equity rather than revenue. As of March 31, 2005, proceeds received from Alticor, or its affiliates, which were recorded as consideration for the fair value of the convertible instruments issued in March 2003, amounted to $18,323,924. As of March 31, 2005, there was $5,374,162 of unrecognized fair value of the convertible instruments.

        Stock options issued to employees under the Company's stock option and stock purchase plans are accounted for under Accounting Principles Board Opinion No. 25 (APB No. 25), Accounting for Stock Issued to Employees. All stock-based awards to non-employees are accounted for at their fair value in accordance with Statement of Financial Accounting Standards (SFAS) No. 123, Accounting for Stock-Based Compensation (SFAS No. 123), and Emerging Issues Task Force (EITF) Issue No. 96-18, Accounting for Equity Instruments that are Issued to Other than Employees.

        The Company applies the disclosure-only alternative of SFAS No. 123, which defines a fair-value-based method of accounting for employee stock options or similar equity instruments. Under the fair-

8


value-based method, compensation cost is measured at the grant date based on the value of the award and is recognized over the service period of the award, which is usually the vesting period. However, SFAS No. 123 also allows entities to continue to measure compensation costs for employee stock compensation plans using the intrinsic value method of accounting prescribed in APB No. 25. The Company has elected to continue to follow the accounting prescribed by APB No. 25 and has made the required disclosures prescribed by SFAS No. 123.

        Had compensation cost for the Company's employee stock awards been determined consistent with SFAS No. 123, the Company's net loss applicable to common stock and net loss per share would have been as follows:

 
   Three Months Ended
March 31,
  
 
   2005
   2004
  
 
    
   (As Restated)

  
Net loss applicable to common stockholders:              
  As reported   $ (1,514,964 ) $ (1,681,031 )
  Stock-based employee compensation     (220,943 )   (190,053 )
   
 
 
  Pro forma   $ (1,735,907 ) $ (1,871,084 )
   
 
 
Basic and diluted net loss per common share:              
  As reported   $ (0.06 ) $ (0.07 )
  Pro forma   $ (0.07 ) $ (0.08 )

        The fair value of the options was estimated at the date of grant using the Black-Scholes option valuation model with the weighted-average assumptions listed in the table below:

 
   Three Months Ended
March 31,
  
 
   2005
   2004
  
Risk free interest rate   5.00 % 4.00 %
Expected life   7 years   7 years  
Expected volatility   70 % 80 %

        Using these assumptions, the weighted average grant date fair value of options granted in 2005 and 2004 was $2.62, and $3.33, respectively.

        The Black-Scholes option-pricing model was developed for use in estimating the fair value of traded options. The Company's employee stock options have characteristics significantly different from those of traded options such as extremely limited transferability and, in most cases, vesting restrictions. In addition, the assumptions used in option valuation models are based upon historical averages that may not predict future results, particularly the expected stock price volatility of the underlying stock. Because changes in these input assumptions can materially affect the fair value estimate, in management's opinion, existing valuation models do not provide a reliable, single measure of the fair value of the Company's employee stock options.

9


        The preparation of its consolidated financial statements requires the Company to estimate its income taxes in each of the jurisdictions in which it operates, including those outside of the United States, which may be subject to certain risks that ordinarily would not be expected in the United States. The income tax accounting process involves estimating its actual current exposure together with assessing temporary differences resulting from different treatment of items, such as deferred revenue, for tax and accounting purposes. These differences result in the recognition of deferred tax assets and liabilities. The Company must then record a valuation allowance to reduce the deferred tax assets to the amount that is more likely than not to be realized.

        Significant management judgement is required in determining the Company's provision for income taxes, its deferred tax assets and liabilities and any valuation allowance recorded against its deferred tax assets. The Company has recorded a full valuation allowance against its deferred tax assets of $15.5 million as of March 31, 2005, due to uncertainties related to its ability to utilize these assets. The valuation allowance is based on management's estimate of future taxable income by jurisdiction in which the Company operates and the period over which the deferred tax assets will be recoverable. In the event that actual results differ from these estimates or management adjusts these estimates in future periods, the Company may need to adjust its valuation allowance which could materially impact the financial position and results of operations.

        Prior to March 2003, costs incurred in connection with obtaining patent protection for intellectual property were expensed as incurred due to the possibility that the Company would never be able to derive any benefits from its patents. As of March 31, 2005, the Company has exclusive rights (subject to rights granted to an affiliate of Alticor within the fields of dermagenomics and nutrigenomics) in twenty issued U.S. patents and has a number of U.S. patents applications pending. The Company has also been granted a number of corresponding foreign patents and a number of foreign counterparts of its U.S. patents and patent applications pending. Since inception the Company has expensed approximately $2.9 million in the effort to obtain patent protection for its intellectual property. Due to the alliance with Alticor Inc. that was entered into on March 5, 2003, the Company began capitalizing certain costs of obtaining patent protection for which the prospect of deriving benefits had become more certain. As of March 31, 2005 and December 31, 2004, the Company has capitalized $342,153 and $311,466, respectively, in patent costs and is included in other assets in the accompanying consolidated balance sheets. The Company amortizes these patents over the shorter of the life of the patent or ten years, their expected useful life. Accumulated amortization of capitalized patent costs was $36,581 and $28,410 at March 31, 2005 and December 31, 2004, respectively.

        Based on EITF No. 00-27, the Company determined that the convertible debt issued on March 5, 2003 contained a beneficial conversion feature. Based on the effective conversion price (which was determined by allocating the proceeds received on March 5, 2003 of $9,595,336 based on the relative fair value of the convertible securities issued, or $8,094,727 to the convertible preferred stock and $1,500,609 to the convertible debt) of the convertible debt of $0.2875 and the market value per share of

10

$0.71 at March 5, 2003, the intrinsic value was calculated to be $2,205,522; however in accordance with EITF N0. 00-27, the amount of the discount allocated to the beneficial conversion feature is limited to the amount of the proceeds allocated to the instrument. The beneficial conversion feature resulted in a discount on the convertible debt of $1,500,609 at March 5, 2003. The amount of the discount allocated to the beneficial conversion feature of the convertible debt is amortized from the date of issuance to the earlier of maturity or the actual conversion date. Therefore, the Company charged $77,617 to amortization of note discount for the three months ended March 31, 2005 and 2004. As of March 31, 2005, the unamortized discount associated with the beneficial conversion feature was $853,795.

        The convertible debt issued in March 2003 has a stated interest rate of prime plus 1%. However, the promissory notes, which were refinanced with the convertible debt, originally had a stated interest rate of 15%. Therefore, the Company determined the fair value of the convertible debt, using an interest rate comparable to that of the refinanced promissory notes, at $1,863,553. The resulting discount of $731,783 is amortized from the date of issuance to the earlier of maturity or conversion date. Therefore, the Company charged $37,851 to amortization of note discount for the three months ended March 31, 2005 and 2004. As of March 31, 2005, the unamortized discount associated with the below market interest rate was $416,360.

        The Company applies SFAS No. 128, Earnings per Share (SFAS No. 128), which establishes standards for computing and presenting earnings per share. Basic and diluted net loss per share was determined by dividing net loss applicable to common stockholders by the weighted average number of shares of common stock outstanding during the period. Diluted loss per share is the same as basic loss per share for all the periods presented, as the effect of the potential common stock equivalents is anti-dilutive due to the loss in each period. Potential common stock excluded from the calculation of diluted net loss per share consists of stock options, warrants, preferred stock and convertible debt as described in the table below:

 
   Three Months Ended
March 31,
 
   2005
   2004
Options outstanding   2,920,048   2,985,474
Warrants outstanding   525,000   525,000
Preferred stock   28,160,200   28,160,200
Convertible debt   4,060,288   4,060,288
   
 
Total   35,665,536   35,730,962
   
 

        Certain prior year balances have been reclassified to conform to current year presentation.

11

        In December 2004, the Financial Accounting Standards Board (FASB) issued SFAS No. 123 (Revised 2004) "Share-Based Payment" (SFAS No. 123R). SFAS No. 123R addresses all forms of share-based payment ("SBP") awards, including shares issued under employee stock purchase plans, stock options, restricted stock and stock appreciation rights. SFAS No. 123R will require the Company to expense SBP awards with compensation cost for SBP transactions measured at fair value. The FASB originally stated a preference for a lattice model because it believed that a lattice model more fully captures the unique characteristics of employee stock options in the estimate of fair value, as compared to the Black-Scholes model which the Company currently uses for its footnote disclosure. The FASB decided to remove its explicit preference for a lattice model and not require a single valuation methodology. SFAS No. 123R requires the Company to adopt the new accounting provisions beginning in 2006.

        The Company currently accounts for its stock-based compensation plans in accordance with APB No. 25. Therefore, the adoption of this statement is likely to have a material effect on the Company's consolidated financial statements.

Note 4. Strategic Alliance with Alticor Inc.

        On March 5, 2003, the Company entered into a broad strategic alliance with several affiliates of the Alticor family of companies to develop and market novel nutritional and skin care products. The alliance utilizes Interleukin Genetics's intellectual property and expertise in genomics to develop personalized consumer products. Alticor has a long history of manufacturing and distributing high quality nutritional supplements and skin care products to a worldwide market.

        The alliance initially included an equity investment, a multi-year research and development agreement, a licensing agreement with royalties on marketed products, the deferment of outstanding loan repayment and the refinancing of bridge financing obligations. The major elements of the initial alliance were:

12

        On June 17, 2004, the Company entered into another research agreement (Research Agreement II) with Alticor, valued at $2,200,000, as amended, to conduct research into the development of a test to identify individuals with specific genetic variations that affect how people gain and maintain weight. During the first phase of the agreement, the Company received $1,380,000 in research funding over a period of six months beginning on July 1, 2004. If Alticor determines, in its sole discretion, that it has a reasonable likelihood of commercializing weight management nutritional products, the Company will be eligible to receive, during the second phase of the agreement, an additional $820,000 in funding over a six-month period.

        On March 5, 2005, the Company entered into an agreement with Alticor to expand the research being performed under Research Agreement I (Research Agreement III) to provide additional funding of $2.7 million over the two years beginning April 1, 2005. Also in March 2005, the Company entered into an additional research agreement (Research Agreement IV) with Alticor for exploratory research valued at $2.3 million over a two-year period commencing April 1, 2005. These research agreements are expected to provide the Company with a total of $5.0 million during the two-year period ending March 2007.

        In addition, in April 2005, Alticor paid the Company, upon achieving a certain milestone, $2.0 million as an advance payment for genetic risk assessment tests to be processed under the terms of the Distribution Agreement. Further, Alticor agreed to extend the draw down period of the $1.5 million working capital credit line through 2007.

Note 5. Debt

        On March 5, 2003 as part of its strategic alliance with Alticor Inc., the Company was granted credit facilities as follows:

13

        As of March 31, 2005 there was $2,595,336 outstanding under the terms of these credit facilities. The credit facilities will mature in December 2007, bear interest at 1% over the prime rate (6.75% at March 31, 2005), are collateralized by a security interest in the Company's intellectual property (except intellectual property related to periodontal disease and sepsis), and are convertible at the election of Alticor into shares of common stock at a conversion price equal to $0.6392 per share.

Note 6. Capital Stock

        At March 31, 2005, the Company had authorized 6,000,000 shares of Series A Preferred stock of which 5,000,000 shares were issued and outstanding. At March 31, 2005, the Company had authorized 75,000,000 shares of $0.001 par value common stock of which 61,960,825 shares were outstanding or reserved for issuance. Of those, 23,636,527 shares were common and outstanding, 28,160,200 shares were reserved for the conversion of the Series A Preferred to common stock, approximately 4,060,288 shares were reserved for the conversion of approximately $2.6 million of debt, 5,115,804 shares were reserved for the exercise of authorized and outstanding stock options, 525,000 shares were reserved for the exercise of outstanding warrants to purchase common stock and 463,006 shares were reserved for the exercise of rights held under the Employee Stock Purchase Plan.

        On March 5, 2003, the Company entered into a Purchase Agreement with Pyxis, pursuant to which Pyxis purchased from the Company Series A Preferred Stock for $7,000,000 in cash on that date, and an additional $2,000,000 in cash that was paid, as a result of the Company achieving a certain milestone, on March 11, 2004.

        The Series A Preferred Stock accrues dividends at the rate of 8% of the original purchase price per year, payable only when, as and if declared by the Board of Directors and are non-cumulative. To date, no dividends have been declared on these shares. If the Company declares a distribution, with certain exceptions, payable in securities of other persons, evidences of indebtedness issued by us or other persons, assets (excluding cash dividends) or options or rights to purchase any such securities or evidences of indebtedness, then, in each such case the holders of the Series A Preferred Stock shall be entitled to a proportionate share of any such distribution as though the holders of the Series A Preferred Stock were the holders of the number of shares of our Common Stock into which their respective shares of Series A Preferred Stock are convertible as of the record date fixed for the determination of the holders of our Common Stock entitled to receive such distribution.

        In the event of any liquidation, dissolution or winding up of the Company, whether voluntary or involuntary, the holders of the Series A Preferred Stock shall be entitled to receive, prior and in preference to any distribution of any of the Company's assets or surplus funds to the holders of its

14


Common Stock by reason of their ownership thereof, the amount of two times the then-effective purchase price per share, as adjusted for any stock dividends, combinations or splits with respect to such shares, plus all declared but unpaid dividends on such share for each share of Series A Preferred Stock then held by them. The liquidation preference at March 31, 2005 was $18,000,000. After receiving this amount, the holders of the Series A Preferred Stock shall participate on an as-converted basis with the holders of common stock in any of the remaining assets.

        Each share of Series A Preferred Stock is convertible at any time at the option of the holder into a number of shares of the Company's common stock determined by dividing the then-effective purchase price ($1.80, and subject to further adjustment) by the conversion price in effect on the date the certificate is surrendered for conversion. As of March 31, 2005, the Series A Preferred Stock is convertible into 28,160,200 shares of Common Stock reflecting a conversion price of $.3196 per share.

        Each holder of Series A Preferred Stock is entitled to vote its shares of Series A Preferred Stock on an as-converted basis with the holders of Common Stock as a single class on all matters submitted to a vote of the stockholders, except as otherwise required by applicable law. This means that each share of Series A Preferred Stock will be entitled to a number of votes equal to the number of shares of Common Stock into which it is convertible on the applicable record date.

Note 7. Commitments and Contingencies

        The Company leases its office and laboratory space under a non-cancelable operating lease expiring March 2009. Future minimum lease commitments under this lease at March 31, 2005 are $1,759,272.

        In connection with the research agreement with Alticor dated March 5, 2003, the Company is obligated to purchase two clinical databases. As of June 30, 2004, the Company determined that this obligation met the criteria of SFAS No. 5, Accounting for Contingencies, and estimated the cost of these two databases at $450,000. Accordingly, the Company recorded a liability and charged research and development expenses of $450,000 at that time. As of March 31, 2005, the Company had negotiated the acquisition of the first of the two databases. The Company believes that the acquisition of the databases will not exceed the amount that the Company has estimated, however actual amounts could differ.

        In connection with the research agreement with Alticor dated June 17, 2004, the Company entered into a sponsored research agreement with Tufts University to conduct a clinical study. The sponsored research agreement is for an amount not to exceed $662,000 and is payable upon achievement of certain milestones. As of March 31, 2005, Tufts University had achieved two of the four milestone payments valued at $350,000. The remaining commitment on this agreement is $312,000. As, and if, Tufts University completes the other milestones associated with this sponsored research agreement, the Company will record these costs as research and development expenses.

15

Note 8. Segment Information

        The Company follows SFAS No. 131, Disclosures about Segments of an Enterprise and Related Information (SFAS No. 131) which establishes standards for reporting information about operating segments in annual and interim financial statements, and requires that companies report financial and descriptive information about its reportable segments based on a management approach. SFAS No. 131 also establishes standards for related disclosures about products and services, geographic areas and major customers. In applying the requirements of this statement, each of the Company's geographic areas described below was determined to be an operating segment as defined by the statement, but have been aggregated as allowed by the statement for reporting purposes. As a result, the Company continues to have one reportable segment, which is the development of genetic risk assessment tests and therapeutic targets for common diseases.

        The Company has no operations outside of the United States. For the three months ended March 31, 2005 and 2004, the Company had minimal royalty income derived from distributors outside the United States, minimal expenses derived from research partners outside the United States and minimal assets outside of the United States. The Company does not believe this risk is material and does not use derivative financial instruments to manage foreign currency fluctuation risk.

16


Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations.

        This report on Form 10-Q and the documents incorporated by reference within this document contain certain forward-looking statements within the meaning of Section 27A of the Securities Act and Section 21E of the Securities Exchange Act. Statements contained in this report that are not statements of historical fact may be deemed to be forward-looking statements. Words or phrases such as "will likely result", "expect", "will continue", "anticipate", "estimate", "intend", "plan", "project", "outlook", or similar expressions are intended to identify forward-looking statements. Forward-looking statements address or may address the following subjects:

        Actual results may vary materially from those expressed in forward-looking statements. Factors that could cause actual results to differ from expectations include but are not limited to; risks related to market acceptance of genetic risk assessment tests in general and our products in particular, risks related to technology and product obsolescence, delays in development of products, dependence on third parties, our ability to fund operations through mid-2006, competitive risks and those risks set forth within the section titled "Certain Factors That May Affect Future Results of Operations or the Market for Our Common Stock" beginning on page 22 within this report. We cannot be certain that our results will not be adversely affected by one or more of these factors or by other factors not currently anticipated. All information set forth in this Form 10-Q is as of the date of this Form 10-Q. Unless required by law we accept no responsibility to update this information.

17


General Overview

        We are in the business of personalized health. We are developing tests and products that can help individuals improve and maintain their health through preventive measures. We plan to develop the following types of products: 1) genetic risk assessment products, 2) preventive nutritional products (foods and nutritionals developed to prevent disease onset), and 3) personalized therapeutics that treat an individual with existing disease and use genetic information to expedite drug development and to target the drug use to individuals most likely to respond favorably. We will use our intellectual property and expertise to develop products or acquire additional intellectual property that can be leveraged, through collaboration with partners, to address unmet market needs. We are currently developing a number of genetic risk assessment tests to be distributed by Alticor in their multi-level marketing channel. The market launch for the first of such tests is expected to occur in the first quarter of 2006.

        Our current commercial strategy is to partner with companies that have sales and marketing capabilities and products or services that complement our own products. We currently have no plans to develop our own sales force; we plan to rely on our strategic partners to promote and distribute our products. The first of these strategic partnerships is the partnership we have with Alticor and its affiliates.

        Our revenue model consists of: 1) charging a fee for processing a genetic risk assessment test and generating a personalized risk assessment report; and 2) receiving a royalty from sales of products developed with a partner, or profit sharing from product sales. Furthermore, we plan to collaborate with other companies in the research and development of products. In these collaborations, we expect to receive a certain amount of research funding from the partner covering labor, material, overhead and a small amount of profit. Our first such collaboration is with Alticor for the development of personalized nutritional and skincare products.

        On March 5, 2003, we entered into a broad strategic alliance with several affiliates of Alticor to develop and market personalized nutritional and skin care products. The alliance utilizes our intellectual property and expertise in genomics to develop personalized consumer products. Alticor has a long history of manufacturing and distributing high quality nutritional supplements and skin care products to a worldwide market through the multi-level marketing channel.

        We are devoting most of our resources to the support of the strategic collaboration with Alticor which includes the development of our genetic risk assessment tests to be sold in combination with Alticor's products. A portion of our resources is also devoted to the development of a new product for the periodontal market. Additionally, we expect to continue incurring losses as we continue research and development efforts in the development of new tests and new products.

        The alliance has included an equity investment, multi-year research and development agreements, a licensing agreement with royalties on marketed products, the deferment of outstanding loan repayment and the refinancing of bridge financing obligations. The financial elements of the alliance are described in greater detail within the "Liquidity and Capital Resources" beginning on page 21.

        Sufficiency of working capital remains our greatest challenge. The amount of cash generated from research collaborations with Alticor is not adequate to fund our operations, thus, resulting in an annual cash burn. The situation is, however, improving as discussed in the "Liquidity and Capital Resources" section beginning on page 21. Our current cash resources, together with additional research agreements, anticipated revenue from product launches, and other arrangements are adequate to fund operations through mid-2006.

Critical Accounting Policies

        Our significant accounting policies are described in Note 3 to the consolidated financial statements included in this report. We believe our most critical accounting policies are in the areas of our strategic

18


alliance with Alticor, stock-based compensation and income taxes. We do not include the value of stock options issued to employees or our Directors as an expense. Had we expensed our stock-based compensation using the Black-Scholes option valuation model described below, our losses would have increased $221,000 in 2005 (or $0.01 per common share) and $190,000 in 2004 (or $0.01 per common share).

Strategic Alliance with Alticor:

        We account for our strategic alliance with Alticor in accordance with Emerging Issues Task Force (EITF) No. 01-1, Accounting for Convertible Instruments Granted to a Nonemployee for Goods or Services or a Combination of Goods or Services and Cash (EITF No. 01-1). Under EITF No. 01-1, proceeds received from Alticor, including payments under our research and development and other agreements, in connection with the March 5, 2003 transaction must first be allocated to the fair value of the convertible instruments issued. As of March 5, 2003, the fair value of the convertible instruments issued was $23.7 million; therefore any proceeds received from Alticor in connection with the March 5, 2003 transaction, up to $23.7 million, will be recorded as equity.

Stock-based Compensation:

        We account for our stock-based compensation plans under Accounting Principles Board Opinion No. 25, Accounting for Stock Issued to Employees (APB No. 25). Under APB No. 25, no stock-based compensation is reflected in net loss, as all options granted under the plans had an exercise price equal to the market value of the underlying common stock on the date of grant and the related number of shares granted is fixed at that point in time. The following table illustrates the effect on net loss and loss per share if we had applied the fair value recognition provisions of Statement of Financial Accounting Standard (SFAS) No. 123, Accounting for Stock-Based Compensation (SFAS No. 123), as amended by SFAS No. 148, Accounting for Stock-Based Compensation-Transition and Disclosure, issued in December 2002. The stock compensation expense in the table below recognizes the expense over the vesting period of the stock options.

 
   Three Months Ended
March 31,
  
 
   2005
   2004
  
 
    
   (As Restated)

  
Net loss attributable to common stockholders:              
  As reported   $ (1,514,964 ) $ (1,681,031 )
  Stock-based employee compensation expense     (220,943 )   (190,053 )
   
 
 
  Pro forma   $ (1,735,907 ) $ (1,871,084 )
   
 
 

Basic and diluted net loss per common share:
 
 
 
 
 
 
 
  As reported   $ (0.06 ) $ (0.07 )
  Pro forma   $ (0.07 ) $ (0.08 )

        The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model, for a stock that does not pay dividends with the following assumptions.

 
   Three Months Ended
March 31,
  
 
   2005
   2004
  
Risk free interest rate   5.00 % 4.00 %
Expected life   7 years   7 years  
Expected volatility   70 % 80 %

19

        The Black-Scholes option-pricing model was developed for use in estimating the fair value of traded options. Our employee stock options have characteristics significantly different from those of traded options such as extremely limited transferability and, in most cases, vesting restrictions. In addition, the assumptions used in the Black-Scholes model (see above) are based upon historical averages that may not predict future results, particularly the expected stock price volatility of the underlying stock. Because changes in these input assumptions can materially affect the fair value estimate, in management's opinion, existing models do not provide a reliable, single measure of the fair value of its employee stock options.

        In December 2004, the Financial Accounting Standards Board (FASB) issued SFAS No. 123 (Revised 2004) "Share-Based Payment" (SFAS No. 123R). SFAS No. 123R addresses all forms of share-based payment (SBP) awards, including shares issued under employee stock purchase plans, stock options, restricted stock and stock appreciation rights. SFAS No. 123R will require us to expense SBP awards with compensation cost for SBP transactions measured at fair value. The FASB originally stated a preference for a lattice model because it believed that a lattice model more fully captures the unique characteristics of employee stock options in the estimate of fair value, as compared to the Black-Scholes model which the Company currently uses for its footnote disclosure. The FASB decided to remove its explicit preference for a lattice model and not require a single valuation methodology. SFAS No. 123R requires the Company to adopt the new accounting provisions beginning in 2006. We currently account for our stock-based compensation plans in accordance with APB No. 25. Therefore, the adoption of this statement is likely to have a material effect on our consolidated financial results.

Income Taxes:

        The preparation of our consolidated financial statements requires us to estimate our income taxes in each of the jurisdictions in which we operate, including those outside the United States, which may be subject to certain risks that ordinarily would not be expected in the United States. The income tax accounting process involves estimating our actual current exposure together with assessing temporary differences resulting from differing treatment of items, such as deferred revenue, for tax and accounting purposes. These differences result in the recognition of deferred tax assets and liabilities. We must then record a valuation allowance to reduce our deferred tax assets to the amount that is more likely than not to be realized.

        Significant management judgment is required in determining our provision for income taxes, our deferred tax assets and liabilities and any valuation allowance recorded against deferred tax assets. We have recorded a full valuation allowance against our deferred tax assets of $15.5 million as of March 31, 2005, due to uncertainties related to our ability to utilize these assets. The valuation allowance is based on our estimates of future taxable income by jurisdiction in which we operate and the period over which our deferred tax assets will be recoverable. In the event that actual results differ from these estimates or we adjust these estimates in future periods we may need to adjust our valuation allowance which could materially impact our financial position and results of operations.

Results of Operations

Three Months Ended March 31, 2005 Compared to Three Months Ended March 31, 2004

        Revenue for the three months ended March 31, 2005 was $7,000 compared to $8,000 for the three months ended March 31, 2004, a decrease of $1,000 or 12%. Royalties on PST® sales were $3,000 (383 tests) and $4,000 (437 tests) for 2005 and 2004, respectively. Both years include licensing revenue of $4,000.

        Research and development expenses were $684,000 for the three months ended March 31, 2005 compared to $825,000 for the three months ended March 31, 2004, a decrease of $141,000 or 17%.

20


        Funded research and development expenses were $402,000 for the three months ended March 31, 2005 compared to $440,000 for the three months ended March 31, 2004, a decrease of $38,000 or 9%. In March 2003, we entered into a research agreement with Alticor to develop genetic tests and software to assess personalized risk and develop and use screening technologies to validate the effectiveness of the nutrigenomic consumables Alticor is developing. Additionally, we will play a key role in enhancing and maintaining scientific credibility in academic and medical communities. After our initial focus in developing products in the United States and Canada, we expect that we will expand our focus to include developing nutigenomic products for sale overseas and developing products in the United States and overseas in other areas of wellness and skin care. Research and development expenses associated with this agreement were $298,000 and $435,000 for the three months ended March 31, 2005 and 2004, respectively. In June 2004, we entered into another research agreement with Alticor to conduct research into the development of a test to identify individuals with specific genetic variations that affect how people gain and maintain weight. Research and development expenses associated with this agreement were $43,000 for the three months ended March 31, 2005. In addition, during 2005 and 2004, we conducted genotyping tests for Alticor for research purposes. The costs associated with these tests were $61,000 for the three months ended March 31, 2005 and $5,000 for the same period in 2004.

        Unfunded research and development expenses were $282,000 for the three months ended March 31, 2005 compared to $385,000 for the three months ended March 31, 2004, a decrease of $103,000 or 27%. The decrease is primarily the result of temporary reductions in labor and overhead.

        Selling, general and administrative expenses were $704,000 for the three months ended March 31, 2005 compared to $725,000 for the three months ended March 31, 2004, a decrease of $21,000 or 3%.

        Interest income was $21,000 for the three months ended March 31, 2005 compared to $10,000 for the same period in 2004. The increase is primarily the result of an increase in the interest rate. Interest expense of $40,000 was incurred during the three months ended March 31, 2005 compared to $34,000 for the same period in 2004. The increase is primarily due to the increase in the prime rate over the two periods.

        We recorded amortization of note discount of $115,000 for the three months ended March 31, 2005 and 2004. Of the $115,000 expense, $78,000 is due to the amortization of the $1.5 million of discount resulting from the beneficial conversion feature of the convertible debt issued in March 2003 and $37,000 is due to the amortization of the $732,000 of discount associated with the below market stated interest rate.

Liquidity and Capital Resources

        As of March 31, 2005, we had cash and cash equivalents of $3.1 million. The cash balance at March 31, 2005 does not include the $2.0 million payment received from Alticor in April 2005 as a result of meeting a certain milestone. Net cash used in operating activities for each of the three month periods ended March 31, 2005 and 2004 was $1.5 million. Cash was used primarily to fund operations.

        Net cash used in investing activities was $38,000 for the three months ended March 31, 2005 compared to $48,000 during the same period in 2004. Cash was used primarily to fund the development of intellectual property.

        Net cash provided by financing activities was $145,000 for the three months ended March 31, 2005 compared to $3.2 million for the three months ended March 31, 2004. During 2005, we received $66,000 from our strategic alliance with Alticor and $85,000 from the exercise of stock options and stock purchases through the employee stock purchase plan. These amounts were offset by $6,000 of payments of our capital lease obligations. During 2004, we received $2.7 million from our strategic alliance with Alticor and $496,000 from the exercise of stock options and stock purchases through the

21


employee stock purchase plan. These amounts were offset by $6,000 of payments of our capital lease obligations.

        We currently do not have any commitments for any material capital expenditures. Our obligations at March 31, 2005 for capital lease payments totaled $12,000, all of which is classified as current. These capital lease obligations mature through March 2006 at various interest rates.

        A summary of our contractual obligations as of March 31, 2005 is included in the table below:

 
   Payments Due By Period
Contractual Obligations
   Total
   Less than
1 Year
   1-3
Years
   3-5
Years
   More than
5 Years
Long-Term Debt Obligations   $ 2,595,336   $ —   $ 2,595,336   $ —   $ —
Capital Lease Obligations     11,596     11,596     —     —     —
Operating Lease Obligations     1,759,272     443,436     878,832     437,004     —
   
 
 
 
 
TOTAL   $ 4,366,204   $ 455,032   $ 3,474,168   $ 437,004   $ —
   
 
 
 
 

        In March 2003, we entered into a broad strategic alliance with several affiliates of Alticor, Inc. family of companies to develop and market personalized nutritional and skin care products. As part of the strategic alliance, we entered into a research agreement (Research Agreement I) with Alticor, governing the terms of developing and validating nutrigenomic and dermagenomic tests and products. Alticor provided us with $5.0 million during the twenty-four months ending March 31, 2005, to conduct certain research projects.

        In June 2004, we entered into a research agreement (Research Agreement II) with Alticor, valued at $2.2 million, as amended, to conduct research into the development of a test to identify individuals with specific genetic variations that affect how people gain and maintain weight. During the first phase of the agreement, we received $1.4 million in research funding over a period of six months beginning on July 1, 2004. If Alticor determines, in its sole discretion, that it has a reasonable likelihood of commercializing weight management nutritional products, we will be eligible to receive, during the second phase of the agreement, an additional $820,000 in funding over a six-month period.

        In March 2005, we entered into an agreement with Alticor to expand the research being performed under Research Agreement I (Research Agreement III) to provide additional funding of $2.7 million over the two years beginning April 1, 2005. Also in March 2005, we entered into an additional research agreement (Research Agreement IV) with Alticor for exploratory research valued at $2.3 million over a two-year period commencing April 1, 2005. These research agreements are expected to provide us with a total of $5.0 million during the two-year period ending March 2007.

        In addition, in April 2005, Alticor paid us, upon achieving a certain milestone, $2.0 million as an advance payment for genetic risk assessment tests to be processed under the terms of the Distribution Agreement. Further, Alticor agreed to extend the draw down period of the $1.5 million working capital credit line through 2007.

        We believe our current cash resources, together with additional research agreements, anticipated revenue from product launches, and other arrangements are adequate to fund operations through mid-2006.

Certain Factors That May Affect Future Results of Operations or the Market for Our Common Stock

We have a history of operating losses and expect these losses to continue in the future.

        We have experienced significant operating losses since our inception and expect these losses to continue for some time. We incurred losses from operations of $5.1 million in 2002, $5.9 million in 2003, $6.7 million in 2004 and $1.4 million for the three months ended March 31, 2005. As of

22


March 31, 2005, our accumulated deficit was $56.1 million. Our losses result primarily from research and development and selling, general and administrative expenses. We have not generated significant revenue from product sales, and we do not know if we will ever generate sufficient revenue from product sales to cover our operating expenses. We will need to generate significant revenue to continue our research and development programs and achieve profitability. We cannot predict when, if ever, we will achieve profitability.

The market for genetic risk assessment tests is unproven.

        The market for genetic risk assessment tests is at an early stage of development and may not continue to grow. The general scientific community, including us, has only a limited understanding of the role of genes in predicting disease. When we identify a gene or genetic marker that may predict disease, we conduct clinical trials to confirm the initial scientific discovery and to establish the scientific discovery's clinical utility in the marketplace. The results of these clinical trials could limit or delay our ability to bring the test to market, reduce the test's acceptance by our customers or cause us to cancel the program, any of which limit or delay sales and cause additional losses. The only genetic risk assessment test we currently market is PST®, and it has produced only minimal revenue to date. The marketplace may never accept our products, and we may never be able to sell our products at a profit. We may not complete development of or commercialize our other genetic risk assessment tests.

        The success of our genetic risk assessment tests will depend upon their acceptance as medically useful and cost-effective by patients, physicians, dentists, other members of the medical and dental community and by third-party payers, such as insurance companies and the government. We can achieve broad market acceptance only with substantial education about the benefits and limitations of genetic risk assessment tests. Our tests may not gain market acceptance on a timely basis, if at all. If patients, dentists and physicians do not accept our tests, or take a longer time to accept them than we anticipate, then it will reduce our anticipated sales, resulting in additional losses.

The market for personalized healthcare is unproven.

        The competition in the field of Personalized Health is not well defined due to a lack of an established market and customer base. The concept is new and requires consumers to do things differently, hence may be considered a "disruptive technology". Adoption of such technology requires substantial market development and customer prospecting. There are a few companies offering predisposition tests or health risk assessments and product recommendations based upon these assessments. Activities in these areas remain small and the overall market is unproven. While both we and Alticor have done some initial market research regarding the marketability of these products there can be no assurance that these products will be successful upon launch or that they can be sold at sufficient margins to make them profitable to our partners or us. If customers do not accept our tests, or take a longer time to accept them than we anticipate, then it will reduce our anticipated sales, resulting in additional losses.

We rely heavily on third parties to perform sales, marketing and distribution functions on our behalf, which could limit our efforts to successfully market products.

        We have limited experience and capabilities with respect to distributing, marketing and selling genetic risk assessment tests. We have relied and plan to continue to rely significantly on sales, marketing and distribution arrangements with third parties, over which we have limited influence. If these third parties do not successfully market our products, it will reduce our anticipated sales and increase our losses. If we are unable to negotiate acceptable marketing and distribution agreements with future third parties, or if in the future we elect to perform sales, marketing and distribution functions ourselves, we will incur significant costs and face a number of additional risks, including the need to recruit experienced marketing and sales personnel. In March 2003, we entered into a strategic

23


alliance with Alticor. As part of this alliance, Alticor will conduct sales, marketing and distribution functions on our behalf. In February 2004, we received a purchase order from Alticor for a firm minimum order of genetic risk assessment tests to be delivered during the first year of product launch. While Alticor has far more experience and success in marketing, selling and distributing products than we do, we could become very dependent upon their success and their failure to successfully market our products could reduce our anticipated sales and increase our losses.

If we fail to obtain additional capital, or obtain it on unfavorable terms, then we may have to end our research and development programs and other operations.

        We anticipate that our current and anticipated financial resources are adequate to maintain our current and planned operations through mid-2006. If we are not generating sufficient cash or cannot raise additional capital prior to that date, we will be unable to fund our business operations and will be required to seek other strategic alternatives.

        Our future capital needs depend on many factors. We will need capital for the commercial launch of additional genetic tests, continued research and development efforts, obtaining and protecting patents and administrative expenses. Additional financing may not be available when needed, or, if available, it may not be available on favorable terms. If we cannot obtain additional funding on acceptable terms when needed, we may have to discontinue operations, or, at a minimum, curtail one or more of our research and development programs.

Because a single shareholder has a controlling percentage of our voting power, other stockholders' voting power is limited.

        As of March 31, 2005, a single stockholder owned, or had rights to own approximately 57.7% of our outstanding common stock. Accordingly, this stockholder will be able to determine the outcome of stockholder votes, including votes concerning the election of directors, the adoption or amendment of provisions in our Certificate of Incorporation or By-Laws and the approval of certain mergers and other significant corporate transactions, including a sale of substantially all of our assets. This stockholder may make decisions that are adverse to other stockholders' or warrantholders' interests. This ownership concentration may also adversely affect the market price of our common stock. Three of our four directors are individuals chosen by this single stockholder. These directors might pursue policies in the interest of this single stockholder to the detriment of our other stockholders.

The Series A Preferred Stock has certain rights which are senior to common shareholder rights and this may reduce the value of the common stock.

        The Series A Preferred Stock, which was issued to Alticor in March 2003, accrues dividends at the rate of 8% of the original purchase price per year, payable only when, as and if declared by the Board of Directors and are non-cumulative. If we declare a distribution, with certain exceptions, payable in securities of other persons, evidences of indebtedness issued by us or other persons, assets (excluding cash dividends) or options or rights to purchase any such securities or evidences of indebtedness, then, in each such case the holders of the Series A Preferred Stock shall be entitled to a proportionate share of any such distribution as though the holders of the Series A Preferred Stock were the holders of the number of shares of our common stock into which their respective shares of Series A Preferred Stock are convertible as of the record date fixed for the determination of the holders of our common stock entitled to receive such distribution.

        In the event of any liquidation, dissolution or winding up of the Company, whether voluntary or involuntary, the holders of the Series A Preferred Stock shall be entitled to receive, prior and in preference to any distribution of any of our assets or surplus funds to the holders of our common stock by reason of their ownership thereof, the amount of two times the then-effective purchase price per

24


share, as adjusted for any stock dividends, combinations or splits with respect to such shares, plus all declared but unpaid dividends on such share for each share of Series A Preferred Stock then held by them. After receiving this amount, the holders of the Series A Preferred Stock shall participate on an as-converted basis with the holders of common stock in any of our remaining assets.

        The preferential right of the Series A Preferred Stock might reduce the value of the common stock.

If we are unsuccessful in establishing additional strategic alliances, our ability to develop and market products and services will be damaged.

        Entering into strategic alliances for the development and commercialization of products and services based on our discoveries is an important element of our business strategy. We anticipate entering into additional collaborative arrangements with Alticor and other parties in the future. We face significant competition in seeking appropriate collaborators. In addition, these alliance arrangements are complex to negotiate and time-consuming to document. If we fail to maintain existing alliances or establish additional strategic alliances or other alternative arrangements, then our ability to develop and market products and services will be damaged. In addition, the terms of any future strategic alliances may be unfavorable to us or these strategic alliances may be unsuccessful.

If we fail to obtain an adequate level of reimbursement for our products or services by third-party payers, then our products and services will not be commercially viable.

        The availability and levels of reimbursement by governmental and other third-party payers affect the market for any healthcare service. These third-party payers continually attempt to contain or reduce the costs of healthcare by challenging the prices charged for medical products and services. To the extent that our products are sold through the medical channel, our ability to successfully commercialize our existing genetic risk assessment test and others that we may develop depends on obtaining adequate reimbursement from third-party payers. The extent of third-party payer reimbursement will likely heavily influence physicians' and dentists' decisions to recommend genetic risk assessment tests, as well as patients' elections to pursue testing. If reimbursement is unavailable or limited in scope or amount, then we cannot sell our products and services profitably. In particular, third-party payers tend to deny reimbursement for services which they determine to be investigational in nature or which are not considered "reasonable and necessary" for diagnosis or treatment. To date, few third-party payers have agreed to reimburse patients for genetic risk assessment tests, and we do not know if third-party payers will, in the future, provide full reimbursement coverage for these genetic tests. If third-party payers do not provide adequate reimbursement coverage, then individuals may choose to directly pay for the test. If both third-party payers and individuals are unwilling to pay for the tests, then the number of tests we can sell will be significantly decreased, resulting in reduced revenue and additional losses.

If we fail to obtain patent protection for our products and preserve our trade secrets, then competitors may develop competing products and services, which will decrease our sales and market share.

        Our success will partly depend on our ability to obtain patent protection, in the United States and in other countries, for our products and services. In addition, our success will also depend upon our ability to preserve our trade secrets and to operate without infringing upon the proprietary rights of third parties.

        We own exclusive rights in twenty issued U.S. patents and have a number of additional U.S. patent applications pending. We have also been granted a number of corresponding foreign patents and have a number of foreign counterparts of our U.S patents and patent applications pending. Our patent positions, and those of other pharmaceutical and biotechnology companies, are generally uncertain and

25


involve complex legal, scientific and factual questions. Our ability to develop and commercialize products and services depends on our ability to:

        Our pending patent applications may not result in issued patents and any issued patents may never afford meaningful protection for our technology or products. Further, others may develop competing products, which avoid legally infringing upon, or conflicting with, our patents. In addition, competitors may challenge any patents issued to us, and these patents may subsequently be narrowed, invalidated or circumvented.

        We also rely on trade secrets and proprietary know-how that we seek to protect, in part, by confidentiality agreements. The third parties we contract with may breach these agreements, and we might not have adequate remedies for any breach. Additionally, our competitors may discover or independently develop our trade secrets.

Third parties may own or control patents or patent applications and require us to seek licenses, which could increase our costs or prevent us from developing or marketing our products or services.

        We may not have rights under patents or patent applications that are related to our current or proposed products. Third parties may own or control these patents and patent applications in the United States and abroad. Therefore, in some cases, to develop or sell any proposed products or services, with patent rights controlled by third parties, our collaborators or we may seek, or may be required to seek, licenses under third-party patents and patent applications. If this occurs, we will pay license fees or royalties or both to the licensor. If licenses are not available to us on acceptable terms, our collaborators or we may be prohibited from developing or selling our products or services.

        If third parties believe our products or services infringe upon their patents, they could bring legal proceedings against us seeking damages or seeking to enjoin us from testing, manufacturing or marketing our products or services. Any litigation could result in substantial expenses to us and significant diversion of attention by our technical and management personnel. Even if we prevail, the time, cost and diversion of resources of patent litigation would likely damage our business. If the other parties in any patent litigation brought against us are successful, in addition to any liability for damages, we may have to cease the infringing activity or obtain a license.

Technological changes may cause our products and services to become obsolete.

        Our competitors may develop risk assessment tests that are more effective than our technologies or that make our technologies obsolete. Innovations in the treatment of the diseases in which we have products or product candidates could make our products obsolete. These innovations could prevent us from selling, and significantly reduce or eliminate the markets for, our products.

We may be prohibited from fully using our net operating loss carryforwards, which could affect our financial performance.

        As a result of the losses incurred since inception, we have not recorded a federal income tax provision and have recorded a valuation allowance against all future tax benefits. As of December 31, 2004, we had net operating loss carryforwards of approximately $39.5 million for federal and state income tax purposes, expiring in varying amounts through the year 2024. We also had a research tax credit of approximately $761,000 at December 31, 2004 that expires in varying amounts through the

26


year 2024. Our ability to use these net operating loss and credit carryforwards is subject to restrictions contained in the Internal Revenue Code which provide for limitations on our utilization of our net operating loss and credit carryforwards following a greater than 50% ownership change during the prescribed testing period. We have experienced two such ownership changes. One change arose in March 2003 and the other was in June 1999. As a result, all of our net operating loss carryforwards will be limited in utilization. The annual limitation may result in the expiration of the carryforwards prior to utilization. In addition, in order to realize the future tax benefits of our net operating loss and tax credit carryforwards, we must generate taxable income, of which there is no assurance.

We are subject to intense competition from other companies, which may damage our business.

        Our industry is highly competitive. Our competitors in the United States and abroad are numerous and include major pharmaceutical and diagnostic companies, specialized biotechnology firms, universities and other research institutions, including those receiving funding from the Human Genome Project. Many of our competitors have considerably greater financial resources, research and development staffs, facilities, technical personnel, marketing and other resources than we do. Furthermore, many of these competitors are more experienced than we are in discovering, commercializing and marketing products. These greater resources may allow our competitors to discover important genes or genetic markers before we do. If we do not discover disease predisposing genes and commercialize these discoveries before our competitors, then our ability to generate sales and revenue will be reduced or eliminated, and could make our products obsolete. We expect competition to intensify in our industry as technical advances are made and become more widely known.

We are subject to government regulation which may significantly increase our costs and delay introduction of future products.

        The sale, performance and analyses of our genetic tests do not currently require FDA or other federal regulatory authority approval. Changes in existing regulations could require advance regulatory approval of genetic risk assessment tests, resulting in a substantial curtailment or even prohibition of our activities without regulatory approval. If our genetic tests ever require regulatory approval, on either a state or federal level, then the costs of introduction will increase and marketing and sales of products may be significantly delayed. We anticipate that the testing procedure itself will be performed primarily in our own genetic testing laboratory which will need to be certified under the auspices of the Clinical Laboratory Improvement Act of 1988 ("CLIA"), administered by the Health Care Financing Administration. We anticipate there will also be additional state and local regulations governing the operation of this laboratory. A delay in receiving CLIA certification or any applicable state or local certification would reduce our revenue and increase our net losses.

We may be subject to product liability claims that are costly to defend and that could limit our ability to use some technologies in the future.

        The design, development, manufacture and use of our genetic risk assessment tests involve an inherent risk of product liability claims and associated adverse publicity. Producers of medical products face substantial liability for damages in the event of product failure or allegations that the product caused harm. We currently maintain product liability insurance, but it is expensive and difficult to obtain, may not be available in the future on economically acceptable terms and may not be adequate to fully protect us against all claims. We may become subject to product liability claims that, even if they are without merit, could result in significant legal defense costs. We could be held liable for damages in excess of the limits of our insurance coverage, and any claim or resulting product recall could create significant adverse publicity.

27


Ethical, legal and social issues related to genetic testing may reduce demand for our products.

        Genetic testing has raised issues regarding the appropriate utilization and the confidentiality of information provided by genetic testing. Genetic tests for assessing a person's likelihood of developing a chronic disease have focused public attention on the need to protect the privacy of genetic assessment medical information. For example, concerns have been expressed that insurance carriers and employers may use these tests to discriminate on the basis of genetic information, resulting in barriers to the acceptance of genetic tests by consumers. This could lead to governmental authorities prohibiting genetic testing or calling for limits on or regulating the use of genetic testing, particularly for diseases for which there is no known cure. Any of these scenarios would decrease demand for our products and result in substantial losses.

Our failure to timely assess and report on the effectiveness of our internal control over financial reporting in accordance with U.S. federal securities laws and the resulting disclaimer from our independent registered public accounting firm may expose us to regulatory sanctions and cause a loss of investor confidence in our internal controls, and adversely affect the trading price of our shares.

        Because our public common float exceeded $75 million on June 30, 2004, we became obligated to comply with Section 404 for the fiscal year ended December 31, 2004. Section 404 requires an annual management assessment of the effectiveness of our internal controls over financial reporting as of our most recent fiscal year end and a report by our independent registered public accounting firm of their opinion on our assessment. Management has selected the framework set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in its Internal Control-Integrated Framework. Management did not complete its work related to the year ended December 31, 2004. Because of this, Grant Thornton LLP was unable to, and did not, express an opinion on management's assessment of its internal control over financial reporting for our fiscal year ended December 31, 2004. Our failure to timely implement an evaluation framework and complete our assessment of our internal control over financial reporting, identify and remediate any material weakness that may exist, and our auditors' inability to provide an opinion on management's assessment could expose us to regulatory sanctions or cause a loss of investor confidence in our internal controls, and in turn might adversely affect the market price of our common stock.

Our dependence on key executives and scientists could adversely impact the development and management of our business.

        Our success substantially depends on the ability, experience and performance of our senior management and other key personnel. If we lose one or more of the members of our senior management or other key employees, it could damage our development programs and our business. In addition, our success depends on our ability to continue to hire, train, retain and motivate skilled managerial and scientific personnel. The pool of personnel with the skill that we require is limited. Competition to hire from this limited pool is intense. We compete with numerous pharmaceutical and healthcare companies, as well as universities and nonprofit research organizations in the highly competitive Boston, Massachusetts's business area. Loss of the services of Dr. Philip R. Reilly, our Chief Executive Officer, Dr. Kenneth Kornman, our President and Chief Scientific Officer, or Mr. Fenel M. Eloi, our Chief Operating Officer and Chief Financial Officer, could delay our research and development programs or otherwise damage our business. In March 2003, we entered into employment agreements with three-year terms with Dr. Reilly, Dr. Kornman and Mr. Eloi. Each of these employees can terminate his employment upon 30 days notice. We do not maintain key man life insurance on any of our personnel.

28


In a circumstance in which Alticor enters a business in competition with our own, our Directors might have a conflict of interest.

        In conjunction with our strategic alliance with Alticor, we have agreed to certain terms for allocating opportunities as permitted under Section 122(17) of the Delaware General Corporation Law. This agreement regulates and defines the conduct of certain of our affairs as they may involve Alticor as our majority stockholder and its affiliates, and the powers, rights, duties and liabilities of us and our officers and directors in connection with corporate opportunities.

        Except under certain circumstances, Alticor and its affiliates have the right to engage in the same or similar activities or lines of business or have an interest in the same classes or categories of corporate opportunities as we do. If Alticor or one of our directors appointed by Alticor, and its affiliates acquire knowledge of a potential transaction or matter that may be a corporate opportunity for both Alticor and its affiliates and us, to the fullest extent permitted by law, Alticor and its affiliates will not have a duty to inform us about the corporate opportunity or be liable to us or to you for breach of any fiduciary duty as a stockholder of ours for not informing us of the corporate opportunity, keeping it for its own account, or referring it to another person.

        Additionally, except under limited circumstances, if an officer or employee of Alticor who is also one of our directors is offered a corporate opportunity, such opportunity shall not belong to us. In addition, we agreed that such director will have satisfied his duties to us and not be liable to us or to you in connection with such opportunity.

        The terms of this agreement will terminate on the date that no person who is a director, officer or employee of ours is also a director, officer, or employee of Alticor or an affiliate.

We do not expect to pay dividends for the foreseeable future and you should not expect to receive any funds without selling your shares of common stock, which you may only be able to do at a loss.

        We have never declared or paid any cash dividends on our capital stock. We currently intend to retain any earnings for use in the operation and expansion of our business and do not anticipate paying any cash dividends on our common stock in the foreseeable future. Therefore, you should not expect to receive any funds without selling your shares, which you may only be able to do at a loss.

Effects of Inflation

        We believe that inflation and changing prices over the past three years have not had a significant impact on our net revenue or on our income from continuing operations.


Item 3. Quantitative and Qualitative Disclosures About Market Risk

        We are exposed to market risk related to changes in interest rates and foreign currency exchange rates. We do not use derivative financial instruments for speculative or trading purposes.

        We are exposed to market risk from changes in interest rates primarily through our financing activities. Interest on our notes payable accrues at a rate equal to the prime rate of interest plus 1% per annum. Our ability to carry out our business plan or our ability to finance future working capital requirements may be impacted if the cost of carrying debt fluctuates to the point where it becomes a burden on our resources.

29

        Some of our sales occur outside the United States and are transacted in foreign currencies. Accordingly, we are subject to exposure from adverse movements in foreign currency exchange rates. At this time we do not believe this risk is material and we do not currently use derivative financial instruments to manage foreign currency fluctuation risk. However, if foreign sales increase and the risk of foreign currency exchange rate fluctuation increases, we may in the future consider utilizing derivative instruments to mitigate these risks.


Item 4. Controls and Procedures

        (a)    Evaluation of Disclosure Controls and Procedures.    Our principal executive officer and principal financial officer, after evaluating the effectiveness of our disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) as of the end of the period covered by this Quarterly Report on Form 10-Q, have concluded that, based on such evaluation, our disclosure controls and procedures were adequate and effective to ensure that material information relating to us, including our consolidated subsidiaries, was made known to them by others within those entities, particularly during the period in which this Quarterly Report on Form 10-Q was being prepared.

        In designing and evaluating our disclosure controls and procedures, our management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and our management necessarily is required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

        (b)    Changes in Internal Control Over Financial Reporting.    As of December 31, 2004, management and our independent accountants have identified a weakness in our internal control over financial reporting that we do not maintain an appropriate segregation of duties for the functions of initiating, authorizing, recording, and reconciling transactions. This is due to a small number of employees with the financial and administrative functions of the company. However, management believes its extensive oversight mitigates the risks associated with the lack of segregation. Management will continue to evaluate the employees involved and the control procedures in place to determine whether the potential benefits of adding employees to clearly segregate duties justifies the expense assocated with such increases. There were no changes in our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

30


PART II—OTHER INFORMATION

Item 1. Legal Proceedings.

        We are not aware of any current or pending litigation to which we are or may be a party that we believe could materially adversely affect our results of operations or financial condition or net cash flows.


Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

        Not applicable.


Item 3. Defaults Upon Senior Securities.

        Not applicable.


Item 4. Submission of Matters to a Vote of Security Holders.

        Not applicable.


Item 5. Other Information.

        On April 26, 2005, we filed our Annual Report on Form 10-K for the fiscal year ended December 31, 2004 with the Securities and Exchange Commission (SEC). In our Form 10-K, management acknowledged that it did not complete the work necessary to comply with Section 404 of the Sarbanes-Oxley Act of 2002 for the fiscal year ended December 31, 2004. In light of this fact, our independent auditor, Grant Thornton LLP, was not able to, and did not, express an opinion on management's assessment of its internal control over financial reporting for our fiscal year ended December 31, 2004.

        On May 6, 2005, Nasdaq deemed our Form 10-K non-compliant presumably based on the disclaimer in the Form 10-K pertaining to Section 404. Having just learned of this on May 10, 2005, we are and will take every possible action to address this situation.


Item 6. Exhibits.

        The exhibits listed in the Exhibit Index immediately preceding the exhibits are filed as part of this Quarterly Report on Form 10-Q.

31


SIGNATURES

        Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

    INTERLEUKIN GENETICS, INC.

Date: May 10, 2005
 
By:
/s/  PHILIP R. REILLY      
Philip R. Reilly
Chairman of the Board and Chief Executive Officer
(Principal Executive Officer)

Date: May 10, 2005
 
By:
/s/  FENEL M. ELOI      
Fenel M. Eloi
Chief Financial Officer, Secretary & Treasurer
(Principal Financial and Accounting Officer)

32


EXHIBIT INDEX

Exhibit Number
   Exhibit
31.1 * Certification by Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

31.2
*
Certification by Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

32.1
*
Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
*
Filed herewith.

33



QuickLinks

TABLE OF CONTENTS
CONSOLIDATED BALANCE SHEETS
CONSOLIDATED STATEMENTS OF OPERATIONS
CONSOLIDATED STATEMENTS OF CASH FLOWS
INTERLEUKIN GENETICS, INC. AND SUBSIDIARY NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
SIGNATURES
EXHIBIT INDEX