Affymax Inc., of Palo Alto, Calif., named Karin L. Walker vice president of finance and chief accounting officer

Ruga Corp., of Palo Alto, Calif., appointed Patrick O'Connor vice president, head of oncology, R&D and James Freddo chief medical officer, head of clinical development

Affymax Inc., of Palo Alto, Calif., promoted Cynthia Smith to vice president of market access and commercial development...Rusty" Williams president and CEO and named Brian Atwood chairman

Affymax Inc., of Palo Alto, Calif., promoted Cynthia Smith to vice president of market access and commercial development

Topica Pharmaceuticals Inc., of Palo Alto, Calif., added Amir Tavakkol as senior vice president of clinical development and operations

Jazz Pharmaceuticals Inc., of Palo Alto, Calif., appointed Jeffrey Tobias senior vice president of R&D and chief medical officer

and Alexander H. Burgess as vice president of marketing...CardioDx, of Palo Alto, Calif., named Andrew L. Guggenhime chief financial officer and appointed Mark Monane chief medical officer

Vivo Ventures LLC, of Palo Alto, Calif., promoted Chen Yu and James Zhao to managing partners

Neoprobe Corp., of Dublin, Ohio, appointed Mark Pykett president and CEO...Topica Pharmaceuticals Inc., of Palo Alto, Calif., elected David E. Cohen to its board

Affymax Inc., of Palo Alto, Calif., named Andrew T. Blair vice president of medical affairs...Anacor Pharmaceuticals Inc., of Palo Alto, Calif., added William J. Rieflin to its board

Affymax Inc., of Palo Alto, Calif., named Herb Cross vice president of finance and chief accounting officer

PronosDx Health Inc., of Palo Alto, Calif., appointed Garry P. Nolan vice chairman and added Joseph C. Presti to its scientific advisory board

Affymax Inc., of Palo Alto, Calif., appointed John Orwin CEO...The firm also named Lori M. Henderson vice president, general counsel and secretary

Affymax Inc., of Palo Alto, Calif., appointed Herb Cross chief accounting officer and vice president of finance

Anacor Pharmaceuticals Inc., of Palo Alto, Calif., appointed Geoffrey M. Partner senior vice president and chief financial officer

Spencer Pharmaceutical Inc., of Boston, named Max Arella president and chairman...StemCells Inc., of Palo Alto, Calif., appointed R. Scott Greer to its board

and Jonathan M. Spergel to its scientific advisory board...Jazz Pharmaceuticals Inc., of Palo Alto, Calif., appointed Paul L. Berns to its board

Affymax Inc., of Palo Alto, Calif., promoted Sylvia Wheeler to vice president of corporate communications...GeoVax Labs Inc., of Smyrna, Ga., added Steven Antebi and David A. Dodd to its board

Tekmira Pharmaceuticals Corp., of Vancouver, British Columbia, appointed Daniel Kisner chairman and named Kenneth Galbraith and Frank Karbe to its board...Topica Pharmaceuticals, of Palo Alto, Calif., appointed Mark W. Davis vice president of clinical development