Dendreon Corp., of Seattle, promoted David Urdal to president; Martin Simonetti to senior vice president, finance; and Christopher Henney to chairman.

DNAPrint Genomics Inc., of Sarasota, Fla., hired Suresh Chandra as senior scientist in the department of biostatistics.

DUSA Pharmaceuticals Inc., of Wilmington, Mass., added William McIntyre as vice president, regulatory affairs.

EraGen Biosciences Inc., of Alachua, Fla., elected David O'Bryan to serve on its board.

Ergo Science Corp., of Boston, elected William Comfort to its board.

Exact Sciences Corp., of Maynard, Mass., added Michael Ross as vice president of clinical affairs.

ExonHit Therapeutics SA, of Paris, appointed Pierre Corvol and Dominique Stehelin to its scientific advisory board.

Genentech Inc., of South San Francisco, promoted John Whiting to vice president. He will continue to serve as controller and chief accounting officer.

ICOS Corp., of Bothell, Wash., appointed Michael Stein vice president and chief financial officer.

IDEC Pharmaceuticals Corp., of San Diego, appointed Paul Grint chief medical officer and senior vice president, clinical research and development.

Illumina Inc., of San Diego, appointed David Douglas vice president of manufacturing.

Ixion Biotechnology Inc., of Alachua, Fla., added Louis Kessler as vice president, corporate development.

Lexicon Genetics Inc., of The Woodlands, Texas, appointed Walter Colbert vice president of human resources and Carol Hensley vice president of corporate communications.

Lynx Therapeutics Inc., of Hayward, Calif., named Craig Taylor chairman, Richard Woychik chief scientific officer and William Wong vice president, business development.

Magainin Pharmaceuticals Inc., of Plymouth Meeting, Pa., appointed Michael Petrone vice president of clinical research.

Matrix Pharmaceutical Inc., of Fremont, Calif., added David Pritchard as senior vice president of finance and chief financial officer.

MDS Proteomics Inc., of Toronto, named Caroline Popper chief business officer and Christopher Hogue as its chief information officer.

Millennium Pharmaceuticals Inc., of Cambridge, Mass., appointed Paul Hamelin senior vice president of commercial operations.

National Institutes of Health, of Bethesda, Md., appointed Paul Sieving director of the National Eye Institute.

Neose Technologies Inc., of Horsham, Pa., added Eric Sichel as vice president of business strategy and corporate communications.

Photogen Technologies Inc., of Knoxville, Tenn., appointed Reinhard Koenig senior vice president, medical and regulatory affairs.