Regeneron Pharmaceuticals Dips; Development of Pain Killer Halted
Regeneron Pharmaceuticals (REGN) is just lower after it said in a SEC filing U.S. regulators halted development of an experimental pain killer it's developing with Sanofi-Aventis SA (SNY) after a similar treatment caused the death of bone tissue in another drugmaker's study.
Sanofi-Aventis is trading at $32.09, down 41 cents, or 1.26%.
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