, ChemoCentryx, Inc. (CCXI), Dynavax (DVAX), Enanta Pharmaceuticals (ENTA), Gilead Sciences (GILD), Idenix Pharmaceuticals (IDIX), InterMune (ITMN), Ironwood Pharmaceuticals (IRWD), Medivation (MDVN), Merrimack Pharmaceuticals (MACK), NPS Pharmaceuticals (NPSP), Ophthotech (OPHT), PTC Therapeutics (PTCT), Regeneron Pharm