Nearly a year after Prometheus Biosciences Inc. sold for $10.8 billion to Merck & Co. Inc., its former CEO, Mark McKenna, is back in the game with Mirador Therapeutics Inc. Many of his former Prometheus colleagues have joined McKenna. Getting the band back together, McKenna told BioWorld, “is the ultimate compliment.” Mirador just launched with more than $400 million to develop therapies for treating immune-mediated inflammatory and fibrotic diseases.

As Merck & Co. Inc.’s whopper proposal to take over Prometheus Biosciences Inc. for $10.8 billion faded from the ever-churning headlines, officials of the pharma heavyweight set about answering questions with regard to plans for the newly gained PRA-023, a humanized monoclonal antibody that targets tumor necrosis factor-like ligand 1A (TL1A).

Chatter about an impending acquisition of Horizon Therapeutics plc sent its shares soaring 61% throughout November, making it the best performing stock of the month among the 30 companies that are part of BioWorld’s Drug Developers Index (BDDI).

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.