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Friday, 07/13/2007 8:47:43 AM

Friday, July 13, 2007 8:47:43 AM

Post# of 7609
ENCY - Encysive Pharmaceuticals Provides Update for Thelin (Sitaxsentan Sodium)
Jul 13, 2007 7:00:00 AM
2007 PrimeNewswire, Inc.
HOUSTON, July 13, 2007 (PRIME NEWSWIRE) -- Encysive Pharmaceuticals Inc. (Nasdaq:ENCY) today announced that the Company and officials from the U.S. Food and Drug Administration (FDA) held a formal Class A preliminary dispute resolution meeting regarding the June 15th approvable letter and the status of our New Drug Application (NDA) for Thelin(tm) (sitaxsentan sodium). Several members of Encysive's internal and external regulatory team attended the meeting with the FDA. In addition, Robyn J. Barst, M.D., Professor of Pediatrics at Columbia University College of Physicians and Surgeons, and Director, New York Presbyterian Hospital Pulmonary Hypertension Center and a principal investigator in the STRIDE-2 trial, attended the meeting.

The Company originally submitted an NDA for Thelin to treat pulmonary arterial hypertension (PAH) in February 2005. In the June 15th approvable letter, the FDA concluded that Encysive's clinical development program for Thelin did not demonstrate significant evidence of efficacy needed for approval.

This meeting complies with the FDA's guidance on dispute resolution requiring that a sponsor meet with the division reviewing its NDA prior to requesting formal dispute resolution. The Company expects to file a request for formal dispute resolution with the FDA in the near term.

About Encysive Pharmaceuticals

Encysive Pharmaceuticals Inc. is a global biopharmaceutical company engaged in the discovery, development and commercialization of novel, synthetic, small molecule compounds to address unmet medical needs. Our research and development programs are predominantly focused on the treatment and prevention of interrelated diseases of the vascular endothelium and exploit our expertise in the area of the intravascular inflammatory process, referred to as the inflammatory cascade, and vascular diseases. To learn more about Encysive Pharmaceuticals please visit our web site:

The Encysive Pharmaceuticals Inc. logo is available at

This press release contains "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements are subject to certain risks, trends and uncertainties that could cause actual results to differ materially from those projected. Among those risks, trends and uncertainties are: decisions by the FDA regarding whether and when to approve our NDA for Thelin(tm); unexpected delays in regulatory approval of Thelin(tm) by the FDA in the U.S. and our other products under development; the unpredictability of the duration and results of regulatory review of new drug applications and investigational new drug applications by the FDA; our estimate of the sufficiency of our existing capital resources; our ability to raise additional capital to fund cash requirements for future operations; the availability of sufficient funds to commercialize Thelin(tm) in the U.S. should it be approved by the FDA, as well as more specific risks, trends and uncertainties facing Encysive such as those set forth in its reports on Forms 8-K, 10-Q and 10-K filed with the U.S. Securities and Exchange Commission. Given these risks, trends and uncertainties, any or all of these forward-looking statements may prove to be incorrect. Therefore you should not rely on any such forward-looking statements. Furthermore, Encysive undertakes no duty to update or revise these forward-looking statements. The Private Securities Litigation Reform Act of 1995 permits this discussion.

CONTACT: Encysive Pharmaceuticals
Ann Tanabe, VP, Investor Relations and Corporate
(713) 796-8822

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