Third Harmonic Bio, Inc. is a biopharmaceutical company. The Company is focused on advancing the next wave of medicine for inflammatory diseases through the development of novel, small-molecule inhibitors of KIT, a cell surface receptor that serves as the master regulator of mast cell function and survival. It is developing medicine for the treatment of inflammatory diseases, including dermal, respiratory, and gastrointestinal diseases. Mast cells are a part of the immune system, and dysfunctional mast cell activity has been implicated in the pathophysiology of a broad range of inflammatory disorders including urticaria, asthma and gastrointestinal disorders, among others. The Company is advancing its lead product candidate, THB335, for the treatment of multiple mast cell-driven inflammatory diseases of the skin, airway and gastrointestinal tract. THB335 is a potent, highly selective, oral small molecule KIT inhibitor with a promising preclinical product profile.