SuperGen's DNA Methyltransferase Inhibitor, S-110, Improves In Vivo Efficacy Profile of Decitabine

DUBLIN, Calif., April 14 /PRNewswire-FirstCall/ -- SuperGen Inc. (Nasdaq: SUPG), a pharmaceutical company dedicated to the discovery, rapid development and commercialization of therapies for solid tumors and hematological malignancies, today announced as part of a series of presentations at the 2008 AACR Annual Meeting that S-110, its DNA methyltransferase inhibitor, improves in vivo efficacy of decitabine (Abstract No. 2613).

Entitled, "Decitabine administered as a Dinucleotide prodrug increases its in vivo efficacy due to enhanced drug delivery and stability," the poster highlights data indicating that S-110 showed robust anti-tumor activity in prostate and cisplatin-resistant ovarian carcinoma xenograft models. Additionally, S-110 restored sensitivity to cisplatin in the ovarian cancer model. Importantly, reduced toxicity was observed along with an increased half-life compared to decitabine.

"S-110's increased half-life, reduced toxicity and improvement of efficacy when compared to decitabine in its currently marketed formulations make it an attractive, next-generation hypomethylator for the treatment of hematoligic malignancies," said Dr. James Manuso, SuperGen's President and CEO. "As we develop S-110 further, we will continue to explore its potential to enhance solid tumors' sensitivity to standard chemotherapy agents, including cisplatin. We look forward to advancing this promising candidate to clinical trials later this year or early next year."

Copies of the 2008 AACR Annual Meeting poster presentations will be available in the pipeline section of SuperGen's Web site www.supergen.com.

About SuperGen

Based in Dublin, Calif., SuperGen Inc. is a pharmaceutical company dedicated to the discovery, rapid development and commercialization of therapies for solid tumors and hematological malignancies. SuperGen is developing a number of therapeutic anticancer products focused on kinase and cell signaling inhibitors and DNA methyltransferase inhibitors. For more information about SuperGen, please visit http://www.supergen.com.

Forward-Looking Statements

This news release contains certain "forward-looking" statements within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are typically preceded by words such as "believes," "expects," "anticipates," "intends," "will," "may," "should," or similar expressions. These forward-looking statements are not guarantees of future performance and involve a number of risks and uncertainties that may cause actual results to differ materially from the results discussed in these statements. Factors that might cause the company's results to differ materially from those expressed or implied by such forward-looking statements include, but are not limited to, the ability to discover, develop and move target compounds into clinical development and other risks and uncertainties detailed from time to time in the company's filings with the Securities and Exchange Commission including its most recently filed Form 10-Q and 10-K. SuperGen Inc. undertakes no duty to update any of these forward-looking statements to conform them to actual results.

SOURCE SuperGen Inc.