While Encysive Pharmaceuticals Inc. received a third approvable letter for Thelin (sitaxsentan sodium) on Friday, Gilead Sciences Inc. got approval for Letairis (ambrisentan), a competing endothelin A receptor antagonist for pulmonary arterial hypertension (PAH). (See Encysive story this issue).(BioWorld Today)

Gilead Gets Letairis Approval, Potential Best In Class For PAH

June 19, 2007

By Trista Morrison

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