TELIK REPORTS POSITIVE TELCYTA™ DATA SUPPORTING USE IN COMBINATION CHEMOTHERAPY REGIMENS

Palo Alto, CA - March 30, 2004 — Telik, Inc. (Nasdaq: TELK) reported preclinical results that support advancement of TELCYTA™ (TLK286) clinical development to the front line and second line treatment settings. The data were presented at the American Association for Cancer Research (AACR) 95th annual meeting in Orlando, Florida.

As reported at the AACR meeting, the addition of TELCYTA™ (TLK286) to cisplatin, carboplatin, oxaliplatin, paclitaxel, docetaxel, gemcitabine, Doxil and gefitinib, resulted in synergy, or enhanced inhibition of cancer cell growth, compared to either TELCYTA or the other drugs alone in preclinical studies. Further, data presented at the AACR meeting demonstrated that TELCYTA is non-cross resistant with paclitaxel, and that TELCYTA treatment restored sensitivity to paclitaxel in resistant cancer cells. Similar results have been observed with platinum drugs, suggesting the potential for TELCYTA to improve outcomes in patients whose disease has progressed following treatment with platinum or taxane drugs, the mainstays of front line chemotherapy in ovarian and non-small cell lung cancer.

Telik is conducting multiple Phase 2 clinical trials using TELCYTA in combination with cisplatin, docetaxel, carboplatin and Doxil in non-small cell lung (NSCLC) and ovarian cancer, in the first and second line settings.

TELCYTA™ is a small molecule tumor-activated drug which is activated by an enzyme present in higher levels in many human cancers than in normal tissues. Upon activation, an intracellular process known as apoptosis, or programmed cell death, occurs. Phase 3 registration trials are in progress in resistant ovarian cancer (www.assist1-trial.com), and NSCLC. TELCYTA™ has been successfully evaluated in Phase 2 single agent trials in ovarian, NSCLC, breast and colorectal cancer, and in combination treatment regimens. TELCYTA™ was discovered through the application of Telik’s proprietary drug discovery technology, TRAP.

About Telik

Telik, Inc. of Palo Alto, CA is a biopharmaceutical company working to discover, develop and commercialize innovative small molecule drugs to treat serious diseases. Additional information is available at www.telik.com.

This press release contains “forward-looking” statements. For this purpose, any statements contained in this press release that are not statements of historical fact may be deemed to be forward-looking statements, including any statements regarding the potential for TELCYTA™ (TLK286) to treat one or more types of cancer. There are a number of important factors that could cause Telik's results to differ materially from those indicated by these forward-looking statements, including, among others, the following: none of Telik’s product candidates, including TELCYTA™, has been determined to be safe or effective in humans or received regulatory approval for marketing; it may take us several years to complete clinical trials of our product candidates, including TELCYTA™, prior to seeking regulatory approval for any indication; success in preclinical testing and early clinical trials does not ensure that later clinical trials will be successful, and interim results of clinical trials do not necessarily predict final results; if our competitors develop and market products that are more effective than our product candidates, or obtain regulatory approval before we do, our commercial opportunity will be reduced or eliminated; if we do not obtain regulatory approval to market products in the United States and foreign countries, we will not be permitted to commercialize our product candidates; if we are unable to contract with third parties to manufacture our product candidates in sufficient quantities and at an acceptable cost, clinical development of product candidates could be delayed; and if we are unable to raise adequate funds in the future, we will not be able to continue to fund our operations and clinical trials to develop our product candidates. These and other risks are detailed from time to time in our SEC reports, including our Annual Report on Form 10-K for the year ended December 31, 2003. Telik does not undertake any obligation to update forward-looking statements.

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Contact:
Carol DeGuzman
Senior Director, Corporate Communications
Telik, Inc.
Tel 650-845-7728
Email cdeguzman@telik.com


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