* Somatogen Inc., Boulder, Colo., appointed Andre de Bruin as its newpresident and CEO. Most recently he was chairman, president and CEOof Boehringer Mannheim Corp. in Indianapolis.* CELx Corp., Seattle, named Harvey Hoyt as president, CEO anddirector. Most recently Hoyt was CEO and director of MicroProbeCorp. in Bothell, Wash.* GeneMedicine Inc., Houston, promoted Mark Gessler to the positionof vice president, corporate development.* Telios Pharmaceuticals Inc., San Diego, appointed Donald Grimmand elected M. Blake Ingle to its board of directors.* SYNSORB Biotech Inc., Calgary, Alberta, appointed BradleyThompson as president and CEO, and David Rafter as vice president,product development.* IDUN Pharmaceuticals, La Jolla, Calif., named Donald Karanewskydirector of chemistry.* Somatix Therapy Corp., Alameda, Calif., promoted Joseph Rokovichto the position of vice president, regulatory affairs and projectmanagement.* MedImmune Inc., Gaithersburg, Md., appointed Gordon Macklin to anew seat on the company's board of directors.* The Liposome Co. Inc., Princeton, N.J., hired James "Tony" Boyle tothe newly created position of senior vice president, medical andregulatory affairs.* Collagen Corp., Palo Alto, Calif., appointed Michael Levitt to theposition of vice president of operations.* Gensia Inc., San Diego, hired Patrick Walsh as executive vicepresident and chief operating officer of Gensia Laboratories Ltd.Gensia also promoted Rob Hillman to the position of division vicepresident, pharmaceutical & delivery systems development, andStephen Eisold to vice president and general manager, pharmaceuticals,North America.* Xytronyx Inc., San Diego, appointed David Okrongly as vicepresident of research and development.* Alexion Pharmaceuticals Inc., New Haven, Conn., appointedBernadette Alford to the newly created position of vice president,regulatory affairs and project management.* Matrix Pharmaceutical Inc., Menlo Park, Calif., hired Morgan Stewartas director, biostatistics and data management.

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