Patients suffering in the long-stagnant therapeutic landscape of ulcerative colitis and Crohn’s disease gained encouragement with positive mid-stage results from Prometheus Biosciences Inc., which tested its tumor necrosis factor-like cytokine 1A-targeting PRA-023 against both forms of inflammatory bowel disease. San Diego-based Prometheus closed at $95.80, up $59.74, or 165.7% after the company made known data from the phase II study called Artemis-UC and the Apollo-CD phase IIa experiment. Prometheus intends to advance PRA-023 into phase III testing next year.