ABBOTT PARK, Ill., Sept. 28, 2012 /PRNewswire/ -- Abbott (NYSE: ABT) today announced that the U.S. Food and Drug Administration (FDA) has approved HUMIRA ® (adalimumab) for inducing and sustaining clinical remission in adult patients with moderately to severely active ulcerative colitis (UC) when certain other medicines have not worked well enough. Combined with its approval to treat moderate to severe Crohn's disease, HUMIRA is now approved for the treatment of two primary diseases that comprise inflammatory bowel disease (IBD). HUMIRA works by inhibiting tumor necrosis factor-alpha (TNF-alpha). The UC approval represents the seventh indication for this treatment in the U.S. and makes HUMIRA the first and only self-administered biologic treatment approved for use in this disease. It is not known if HUMIRA is effective in people with moderate to severe UC who have lost response to or could not tolerate anti-TNF medicines. HUMIRA can be self-administered after proper injection training is received and with proper physician monitoring. "There is significant unmet medical need in this patient population, which has not seen a new treatment approved in more than seven years," said William J. Sandborn, M.D., division chief, Gastroenterology, University of California, San Diego. "This FDA approval is good news for patients and health care professionals who are seeking another option to manage the disease." UC is a chronic disease that is marked by inflammation and ulceration in the lining of the colon or large intestine. It is estimated that approximately 700,000 people in the U.S. have UC. On average, people are diagnosed with UC in their mid-30s, though the disease can occur at any age. Symptoms include abdominal cramping, rectal bleeding, diarrhea, and urgency and frequency to have a bowel movement. The symptoms of UC tend to come and go, with periods of remission between flare-ups. Treatment may include medication and/or surgery.