Allergan has acquired clinical-stage biotech Vitae Pharmaceuticals for $639 million. The deal will strengthen Allergan’s dermatology product pipeline, with the addition of VTP-43742, a Phase 2 first-in-class, orally active RORγt (retinoic acid receptor-related orphan receptor gamma) inhibitor for the potential treatment of psoriasis and other autoimmune disorders. VTP-43742 acts through the potent inhibition of IL-17 activity. In preclinical studies, VTP-43742 has been observed to inhib...