Which Market Players Are Driving The Giant-Cell Arteritis Market Growth? Key players in the giant-cell arteritis market include Pfizer Inc., Johnson & Johnson Services Inc., F. Hoffmann-La Roche Ltd., Merck & Co. Inc., AbbVie Inc., Bayer AG, Sanofi SA, Bristol-Myers Squibb Company, Novartis AG, GlaxoSmithKline Plc, Takeda Pharmaceutical Company Limited, Eli Lilly and Company, Amgen Inc., Boehringer Ingelheim, Teva Pharmaceutical Industries Ltd., Regeneron Pharmaceuticals Inc., Astellas Pharma Inc., CSL Limited, Kiniksa Pharmaceuticals Ltd., MorphoSys AG.