Predix Pharmaceuticals Inc., of Woburn, Mass., added Chen Schor as chief business officer.

Rib-X Pharmaceuticals Inc., of New Haven, Conn., added George Milne to its board.

Savient Pharmaceuticals Inc., of East Brunswick, N.J., appointed Alan Rubinfeld acting chief financial officer.

Sirna Therapeutics Inc., of Boulder, Colo., promoted Nassim Usman to senior vice president and chief operating officer; Barry Polisky to senior vice president, research; Chandra Vargeese to vice president, chemistry; Mark Egan to vice president, manufacturing; and Patti Ketchner to vice president and corporate controller.

SomaLogic Inc., of Boulder, Colo., named David Lawrence an adviser to its board.

Sunesis Pharmaceuticals Inc., of South San Francisco, appointed Eric Bjerkholt senior vice president and chief financial officer.

Vela Pharmaceuticals Inc., of Lawrenceville, N.J., added George Clay to its scientific advisory board.

Velcura Therapeutics Inc., of Ann Arbor, Mich., added Julie Glowacki, John Lowe and Stratford May to its advisory board.