On July 20, the US Food and Drug Administration (FDA) granted approval to Octagam® 10% for the treatment of adult dermatomyositis, a rare immune-mediated inflammatory disease. Octagam® 10% is the first and only intravenous immunoglobulin (IVIg) approved for dermatomyositis. Dermatomyositis is an autoimmune condition that involves inflammation of muscles and associated tissues, such as the blood vessels that supply the muscles. The . . .