Topigen Pharmaceuticals Inc, of Montreal, named Robert Boisjoli chief financial officer. The company also added former FDA official Marianne Mann and former Merck & Co. Inc. executive Elizabeth Vadas as scientific advisors.

Valeant Pharmaceuticals International, of Aliso Viejo, Calif., appointed Rajiv De Silva chief operating officer of specialty pharmaceuticals.

XOMA Ltd., of Berkeley, Calif., appointed Fred Kurland vice president of finance and chief financial officer.