James McClintic has joined the Exagen Diagnostics as president and CEO.

Cumbre announced that Barry Hafkin, M.D., has joined the company as president and CEO.

Dr. Lorne Tyrrell has been named CEO of ViRexx Medical.

Bill Gruber has joined Hemedex as the company's president.

Steven A. Shallcross has resigned from Advancis. Robert C. Low, who has served as corporate controller since joining Advancis in August 2003, has been promoted to vice president of finance and acting CFO.

US Oncology has named Bruce D. Broussard president for US Oncology Holdings and its operating company, US Oncology, Inc.

Clinical Data announced the appointment of Drew Fromkin to the newly created position of executive vice president and chief marketing officer.

OrthoLogic has appointed Dana B. Shinbaum to the position of vice president of business development.

West Pharmaceutical Services has elected Paula A. Johnson, M.D., MPH, to its board.

Pharmacopeia has elected Carol A. Ammon to its board of directors.

QuatRx Pharmaceuticals has named Anders P. Wiklund to its board of directors.