Introgen Therapeutics Reports Second Quarter 2008 Financial Results and Recent Corporate Highlights

Introgen Therapeutics, Inc. (NASDAQ: INGN), a developer of targeted molecular therapies for cancer, announced today its financial results for the quarter and six months ended June 30, 2008, and highlighted recent corporate and product developments. Recent Highlights Announced positive data from Phase III clinical trial of ADVEXIN® therapy for recurrent, refractory head and neck cancer, and presented supporting survival data at the American Society of Gene Therapy Annual Meeting and the American Association for Cancer Research’s Cancer Clinical Trials and Personalized Medicine Conference ADVEXIN demonstrated a statistically significant increased survival benefit compared to methotrexate in p53 biomarker population ADVEXIN demonstrated a statistically significant increase in tumor response compared to methotrexate in p53 biomarker population ADVEXIN is well tolerated with less serious side effects compared to conventional cancer therapies ADVEXIN and methotrexate are effective in different and complementary groups of patients dependent upon patients’ p53 biomarker profiles Submitted ADVEXIN Biologics License Application (BLA) to the United States Food and Drug Administration (FDA) and Marketing Authorization Application (MAA) to the European Medicines Evaluation Agency (EMEA) Established Introgen Technical Services to pursue contract production, process development and manufacturing services Formed strategic alliance with the Texas A&M University System to address opportunities for process development and production of therapeutics, vaccines, delivery systems and devices for human and veterinary applications. Second Quarter 2008 Financial Results During the quarter, the company’s cash, cash equivalents and short-term investments decreased $5.5 million as a result of the use of those resources to conduct its business, which is consistent with the anticipated decrease in the amount of these resources consumed as compared to the quarter ended June 30, 2007. Introgen’s cash, cash equivalents and short-term investments were $11.0 million at June 30, 2008. Revenue was $121,000 for the quarter ended June 30, 2008, compared to revenue of $82,000 for the quarter ended June 30, 2007. Operating expense was $6.6 million for the quarter ended June 30, 2008, compared to operating expense of $8.3 million for the quarter ended June 30, 2007, which includes $1.1 million and $1.5 million, respectively, of expense related to share-based compensation. Operating expense for the second quarter declined primarily as a result of the completion of activities associated with the ADVEXIN® regulatory filings in both the U.S. and Europe. The company’s net loss was $6.3 million, or $0.14 per share, for the quarter ended June 30, 2008. These results compare to a net loss of $7.7 million, or $0.18 per share, for the comparable quarter ended June 30, 2007. Six Months Financial Results Revenue was $307,000 for the six months ended June 30, 2008, compared to revenue of $404,000 for the six months ended June 30, 2007. Operating expense was $13.9 million for the six months ended June 30, 2008, compared to operating expenses of $14.7 million for the six months ended June 30, 2007, which includes $2.2 million and $2.8 million, respectively, of expense related to share-based compensation. The company’s net loss was $8.7 million, or $0.20 per share, for the six months ended June 30, 2008. These results compare to a net loss of $13.4 million, or $0.31 per share, for the six months ended June 30, 2007. About Introgen Introgen Therapeutics, Inc. is a biopharmaceutical company focused on the discovery, development and commercialization of targeted molecular therapies for the treatment of cancer and other diseases. Introgen is developing molecular therapeutics, immunotherapies, vaccines and nano-particle tumor suppressor therapies to treat a wide range of cancers using tumor suppressors, cytokines and genes. Introgen maintains integrated research, development, manufacturing, clinical and regulatory departments and operates multiple manufacturing facilities including a commercial scale cGMP manufacturing facility. Forward-Looking Statements Statements in this release that are not strictly historical may be "forward-looking” statements, including those relating to Introgen’s future success with its ADVEXIN clinical and research programs for the treatment of cancer, regulatory submissions in the U.S. and Europe and Introgen’s financial performance. Only the FDA and EMEA can determine whether ADVEXIN can be marketed in the United States and Europe. The actual results may differ from those described in this release due to risks and uncertainties that exist in Introgen’s operations and business environment, including Introgen’s stage of product development and the limited experience in the development of gene-based drugs in general, dependence upon proprietary technology and the current competitive environment, history of operating losses and accumulated deficits, reliance on collaborative relationships, and uncertainties related to clinical trials, the safety and efficacy of Introgen’s product candidates, the ability to obtain the appropriate regulatory approvals, Introgen’s patent protection and market acceptance, as well as other risks detailed from time to time in Introgen’s filings with the Securities and Exchange Commission, including its filings on Form 10-K and Form 10-Q. Introgen undertakes no obligation to publicly release the results of any revisions to any forward-looking statements that reflect events or circumstances arising after the date hereof. Editor's Note: For more information on Introgen Therapeutics, or for a menu of archived press releases, please visit Introgen’s website at www.introgen.com. INTROGEN THERAPEUTICS, INC. AND SUBSIDIARIES CONSOLIDATED BALANCE SHEET                 JUNE 30, DECEMBER 31, 2008 2007 (Unaudited)   (Thousands)   CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS $ 11,016 $ 14,905   MARKETABLE SECURITIES 0 10,165   OTHER CURRENT ASSETS 535 706   PROPERTY AND EQUIPMENT, NET 4,074 4,442   OTHER ASSETS   253   265   TOTAL ASSETS $ 15,878 $ 30,483   ACCOUNTS PAYABLE, ACCRUALS AND OTHER CURRENT LIABILITIES $ 6,474 $ 7,240   NOTES PAYABLE, NET OF CURRENT PORTION 7,022 7,155   OTHER LONG TERM LIABILITIES   6   79   TOTAL LIABILITIES   13,502   14,474   NON-CONTROLLING INTEREST IN CONSOLIDATED SUBSIDIARY 2 6   TOTAL STOCKHOLDERS' EQUITY   2,374   16,003   TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 15,878 $ 30,483 INTROGEN THERAPEUTICS, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENT OF OPERATIONS (Unaudited)                                     THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30,     JUNE 30,   2008     2007     2008     2007   (Thousands except per share information.)   CONTRACT SERVICES, GRANT AND OTHER REVENUE $ 121   $ 82   $ 307   $ 404     OPERATING EXPENSES: RESEARCH AND DEVELOPMENT 4,154 4,763 8,836 7,938 GENERAL AND ADMINISTRATIVE   2,490     3,533     5,021     6,800     TOTAL OPERATING EXPENSES   6,644     8,296     13,857     14,738     LOSS FROM OPERATIONS (6,523 ) (8,214 ) (13,550 ) (14,334 )     REALIZED GAIN ON SALE OF MARKETABLE SECURITIES 0 0 4,388 0 INTEREST INCOME, INTEREST EXPENSE AND         OTHER INCOME, NET   177     451     411     968     LOSS BEFORE NON-CONTROLLING INTEREST IN CONSOLIDATED SUBSIDIARY   ($6,346 )   ($7,763 )   ($8,751 )   ($13,366 )   NON-CONTROLLING INTEREST IN CONSOLIDATED SUBSIDIARY   0     14     4     0     NET LOSS   (6,346 )   (7,749 )   (8,747 )   (13,366 )   NET LOSS PER SHARE, BASIC AND DILUTED   ($0.14 )   ($0.18 )   ($0.20 )   ($0.31 )   SHARES USED IN COMPUTING BASIC AND DILUTED NET LOSS PER SHARE   44,014     43,801     44,010     43,728