The FDA has approved a new biologic drug called Stelara for the treatment of moderate to severe plaque psoriasis in adults. Plaque psoriasis is an immune system disorder that results in the rapid overproduction of skin cells. According to the FDA, about 6 million people in the US have plaque psoriasis, which is characterized by thickened patches of inflamed, red skin, often covered with silvery scales.

Scientists from the University of Cambridge have found that alemtuzumab, a drug originally developed for leukemia can curb the progression of multiple sclerosis (MS) even reverse some damage caused by the neurological disorder. The drug, a monoclonal antibody, has also been tested for treatment of other immune system disorders. Alemtuzumab targets the cells of the immune system that attack the myelin sheath and the nerve fibers.