Rubicon Genomics, of Ann Arbor, Mich., appointed Arul Chinnaiyan to its molecular diagnostics scientific advisory board.

Sirna Therapeutics, of San Francisco, appointed Scott Greer chairman, and Lutz Lingnau to its board.

Spectrum Pharmaceuticals Inc., of Irvine, Calif., appointed Daniel Pertschuk vice president of medical affairs.

TaiGen Biotechnology, of Taipei, Taiwan, appointed William Keller to its board.