Acceleron Pharma Inc., of Cambridge, Mass., appointed Robert Steininger senior vice president, manufacturing.

AEterna Zentaris Inc., of Quebec City, Quebec, appointed David Mazzo president and CEO.

Akesis Pharmaceuticals Inc., of San Diego, added Michael Scaife to its scientific advisory board.

Ardea Biosciences Inc., of Carlsbad, Calif., hired Christopher Krueger as senior vice president and chief business officer, and Colin Rowlings as senior vice president of pharmaceutical sciences.