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Poniard Pharmaceuticals Announces Positive Tumor Response and Neuropathy Data from Phase 2 Clinical Trial of Picoplatin in Metastatic Colorectal Cancer
Date:1/14/2009

- Incremental Data to be Presented at ASCO GI Symposia Continue to Support Picoplatin as Neuropathy-Sparing Alternative to Oxaliplatin in First-Line Colorectal Cancer Treatment -

SOUTH SAN FRANCISCO, Calif., Jan. 14 /PRNewswire-FirstCall/ -- Poniard Pharmaceuticals, Inc. (Nasdaq: PARD), a biopharmaceutical company focused on innovative oncology therapies, today announced updated efficacy and safety data from its randomized, controlled Phase 2 clinical trial of picoplatin in patients with metastatic colorectal cancer (CRC). Results continue to suggest that picoplatin, given once every four weeks in combination with 5-fluorouracil and leucovorin (FOLPI), is associated with less frequent and less severe neurotoxicity than oxaliplatin given in combination with 5-fluorouracil and leucovorin in the modified FOLFOX-6 regimen (FOLFOX). Results also continue to indicate that both regimens have similar anti-tumor activity in first-line metastatic CRC. Net sales in 2007 in the US for Eloxatin (oxaliplatin) were approximately $1.3 billion.

"These new data continue to suggest that picoplatin is an active platinum agent in colorectal cancer, but without the significant neuropathy associated with currently marketed platinums," said Richard Goldberg, M.D., associate director of clinical research for the University of North Carolina Comprehensive Center and physician-in-chief of the N.C. Cancer Hospital. Dr. Goldberg also is a member of Poniard's Clinical Advisory Board. "Picoplatin may provide a neuropathy-sparing alternative to oxaliplatin in patients with advanced colorectal cancer. I'm encouraged by the results, which could support additional trials."

Picoplatin, the Company's lead product candidate, is a new generation platinum-based chemotherapy agent with the potential to become a platform product addressing multiple indications, combinations and formulations. The picoplatin data will be presented in a poster session Saturday, January 17th at 12:30 pm Pacific Time (abstract #444/poster #A56) during the American Society of Clinical Oncology's (ASCO) 2009 Gastrointestinal Cancers Symposium in San Francisco.

Phase 2 CRC Trial Design and Updated Results

The randomized, controlled Phase 2 trial is evaluating picoplatin as a neuropathy-sparing alternative to oxaliplatin for the first-line treatment of metastatic CRC in 101 patients who have not received prior chemotherapy. The trial is comparing the safety, including neuropathy, and efficacy of intravenous picoplatin given once every four weeks in combination with bi-weekly 5-fluorouracil and leucovorin (the FOLPI regimen) with oxaliplatin given in combination with 5-fluorouracil and leucovorin in the FOLFOX regimen, which is the current standard of care. Severe neuropathy is commonly seen in CRC patients treated with oxaliplatin in combination with 5-fluorouracil and leucovorin as part of the FOLFOX regimen at cumulative doses above 800 mg/m squared.

The Phase 2 results, scheduled for presentation at the ASCO Symposium, showed that 65 percent of evaluable FOLFOX-treated patients showed evidence of neurotoxicity compared with 28 percent of patients treated with FOLPI. Ten percent of FOLFOX-treated patients exhibited severe (Grade 3/4) neuropathy compared with no FOLPI-treated patients. Nonhematologic adverse events, including acute gastrointestinal toxicity, were similar between the treatment groups. Thrombocytopenia and neutropenia were more frequent and severe with the FOLPI regimen, but manageable.

Anti-tumor activity also was similar in the FOLPI and FOLFOX groups. Of patients in the FOLPI arm, 76 percent achieved disease control (complete response, partial response and stable disease), including one patient with a complete response and seven patients with a partial response, as did 76 percent of patients in the FOLFOX arm, including seven patients with a partial response.

"These interim, proof-of-concept Phase 2 results are very encouraging and continue to suggest the potential of picoplatin as a neuropathy-sparing first-line therapy for metastatic colorectal cancer," said Robert De Jager, M.D., chief medical officer of Poniard. "We continue to observe the study participants to obtain progression-free and overall survival data. We expect that those data will support our primary goal of developing picoplatin as a preferred platinum therapy for patients with metastatic colorectal cancer who cannot tolerate the toxicity profile of currently marketed platinums."

About Picoplatin

Picoplatin is designed to overcome platinum resistance associated with chemotherapy in solid tumors. It has an improved safety profile relative to existing platinum-based cancer therapies. Picoplatin has been evaluated in more than 750 patients and has demonstrated anti-tumor activity in multiple indications with less severe kidney toxicity (nephrotoxicity) and nerve toxicity (neurotoxicity) than is commonly observed with other platinum chemotherapy drugs. It is being studied in multiple cancer indications, treatment combinations and in two formulations.

In addition to the Phase 2 clinical trial in CRC, Poniard is evaluating intravenous picoplatin in an ongoing pivotal Phase 3 trial, known as SPEAR (Study of Picoplatin Efficacy After Relapse), in small cell lung cancer. This registration trial currently is being conducted under a Special Protocol Assessment (SPA) from the U.S. Food and Drug Administration and is evaluating overall survival as the primary endpoint. Picoplatin is also being evaluated in an ongoing Phase 2 clinical trial in patients with metastatic hormone-refractory prostate cancer. Oral picoplatin is being evaluated in a Phase 1 clinical trial in solid tumors. The oral formulation of picoplatin has the same active pharmaceutical ingredient as the intravenous formulation. Picoplatin has not been approved by any regulatory authority for use in humans.

About Poniard Pharmaceuticals

Poniard Pharmaceuticals, Inc. is a biopharmaceutical company focused on the development and commercialization of innovative oncology products to impact the lives of people with cancer. For additional information please visit http://www.poniard.com.

This release contains forward-looking statements, including statements regarding the Company's business objectives and strategic goals, drug development plans, timing and results of clinical trials, the potential safety and efficacy of its products in development and commercialization strategy. The Company's actual results may differ materially from those indicated in these forward-looking statements based on a number of factors, including risks and uncertainties associated with the Company's research and development activities; the results of pre-clinical and clinical testing; the receipt and timing of FDA and other required regulatory approvals; the market's acceptance of the Company's proposed products; the Company's anticipated operating losses, need for future capital and ability to obtain future funding; competition from third parties; the Company's ability to preserve and protect intellectual property rights; the Company's dependence on third-party manufacturers and suppliers; the Company's lack of sales and marketing experience; the Company's ability to attract and retain key personnel; changes in technology, government regulation and general market conditions; and the risks and uncertainties described in the Company's current and periodic reports filed with the Securities and Exchange Commission (SEC), including the Company's Annual Report on Form 10-K for the year ended December 31, 2007 and its Quarterly Report on Form 10-Q for the period ended September 30, 2008. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this release. The Company undertakes no obligation to update any forward-looking statement to reflect new information, events or circumstances after the date of this release or to reflect the occurrence of unanticipated events.

(C) 2009 Poniard Pharmaceuticals, Inc. All Rights Reserved.

Poniard and Poniard Pharmaceuticals are trademarks of Poniard Pharmaceuticals, Inc.


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SOURCE Poniard Pharmaceuticals, Inc.
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