GSK is the world 's second -largest drugmaker . U.S.-based Stiefel is world 's largest independent dermatology company . A further $ 300 million cash payment will be made depending on future performance . GSK Group will acquire total share capital of Stiefel for $ 1.5 billion . Global business will operate under Stiefel identity within GSK .
GSK is the world 's second -largest drugmaker . U.S.-based Stiefel is world 's largest independent dermatology company . GSK Group will acquire total share capital of Stiefel for $ 1.5 billion . Global business will operate under Stiefel identity within GSK .