A RANDOMIZED, MULTICENTRE, DOUBLE BLIND, PLACEBO CONTROLLED STUDY EVALUATING THE EFFICACY OF VARENICLINE IN CESSATION OF ORAL TOBACCO USE To compare the efficacy of varenicline to placebo for cessation of use of smokeless tobacco assessed using the 4 week Continuous Quit Rate (CQR) at the end of treatment.

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A PHASE 2A, RANDOMIZED, DOUBLE BLIND, PLACEBO-CONTROLLED, PARALLEL GROUP STUDY INVESTIGATING THE DOSE-RESPONSE OF PF-00489791 ON ACUTE HEMODYNAMICS IN SUBJECTS WITH IDIOPATHIC AND FAMILIAL PULMONARY ARTERIAL HYPERTENSION To evaluate the effect of different doses of PF-00489791 on PVRI in subjects with idiopathic and familial pulmonary arterial hypertension.

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• Specialty None