PTC Therapeutics Presents Encouraging Phase 1 Results of its Novel VEGF Inhibitor, PTC299, at 30th Annual San Antonio Breast Cancer...( - Company Initiates Phase1b/2 C...),Health

- Company Initiates Phase1b/2 Clinical Trial in Breast Cancer -

SAN ANTONIO and SOUTH PLAINFIELD, N.J., Dec. 17 /PRNewswire/ -- PTC Therapeutics, Inc. (PTC), a biopharmaceutical company focused on the discovery, development, and commercialization of small-molecule drugs targeting post-transcriptional control mechanisms announced the presentation of preclinical and Phase 1 data regarding PTC299, its novel, internally discovered, vascular endothelial growth factor (VEGF) inhibitor. PTC299 is an orally bioavailable investigational drug which is designed to inhibit the production of VEGF in tumors, acting upstream of current anti-angiogenic agents that function at the site of the VEGF receptor. The preclinical and clinical data presented today formed the basis for the recent initiation of a Phase 1b/2 clinical trial of PTC299 in patients with advanced breast cancer.

(Logo: http://www.newscom.com/cgi-bin/prnh/20010919/PTCLOGO )

"We are pleased to present these preclinical data on PTC299, which show drug activity in multiple preclinical models of human cancer, including breast cancer," said Langdon Miller, M.D., Chief Medical Officer of PTC Therapeutics, Inc. "Based on the safety profile and pharmacokinetic results from our Phase 1a studies, we are excited to have initiated a Phase 1b/2 trial of PTC299 in patients with advanced breast cancer. Our hope is that PTC299 will offer an active, well-tolerated, and convenient oral therapy for patients with breast cancer and other tumor types."

The data were detailed in a poster presentation at the San Antonio Breast Cancer Symposium entitled, "Preclinical Efficacy in Breast Cancer Xenografts and Phase 1 Results of PTC299, a Novel VEGF Expression Inhibitor," (Poster Number 6082).

In the preclinical studies, PTC299 was administered to mice harboring established human breast tumor xenografts. In these studies,
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