-- LB54640 has shown targeted effect on MC4R without hyperpigmentation -- BOSTON, July 23, 2024 (GLOBE NEWSWIRE) -- Rhythm Pharmaceuticals, Inc. (NASDAQ:RYTM), a commercial-stage biopharmaceutical company focused on transforming the lives of patients and their families living with rare neuroendocrine diseases, today announced that the first patients have been dosed in the Company's Phase 2 clinical trial evaluating LB54640, an investigational oral melanocortin-4 receptor (MC4R) agonist, in hypothalamic obes ...