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Introgen publishes preclinical findings demonstrating the potent anti-tumor properties of INGN 241 study featured on the cover of Molecular Medicine

Austin, TX, May 10, 2001- Introgen Therapeutics, Inc. (NASDAQ: INGN) announced today the publication of its preclinical studies in the current issue of Molecular Medicine demonstrating the potent anti-tumor effects of INGN 241 (an adenoviral vector encoding the mda-7 gene) in three of the most prevalent human cancers, breast, lung and colorectal.

The study also demonstrates, for the first time, that MDA-7 protein is released from cancer cells treated with Adenoviral-mda7. The lead author of the publication is Abner Mhashilkar, Ph.D., project leader of Introgens mda-7 program. The cover of Molecular Medicine featured a photomicrograph which demonstrates secretion of MDA-7 protein from INGN 241 treated cells, a result which may enhance the potency of INGN 241 therapy.

The research and paper are the result of the efforts of an international team of collaborators, including scientists from The University of Texas M. D. Anderson Cancer Center, the Imperial Cancer Research Technology in the United Kingdom, Corixa Corporation and Columbia University College of Physicians and Surgeons. The study was funded in part by grant R43 CA86587 from the National Cancer Institute.

We have previously shown that INGN 241 will selectively kill lung tumor cells by inducing the cells to commit suicide, a process known as apoptosis, said Sunil Chada, Ph.D., Introgens director of research and development and senior author of the manuscript. These new functional studies indicate that the mda-7 gene has tumor suppressor activity in some of the most prevalent human cancers. Introgens research also demonstrates that the MDA-7 protein is secreted. These unique properties of INGN 241 suggest that it may be a potent anti-tumor agent for local-regional applications, and potentially for the systemic treatment of cancer.

The studies involved functional biological assays coupled with genomic analytic tools. These studies indicated that INGN 241 suppressed growth in 19 out of
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Contact: Andi Wakayama
a.wakayama@noonanrusso.com
415-677-4455 ext 252
Noonan/Russo Communications
9-Apr-2001


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