Transient receptor potential melastatin 3 (TRPM3) is a calcium-permeable TRP channel that is highly expressed in somatosensory neurons, including nociceptors of rodents and humans. Its activation triggers acute pain, making drugs that target TRPM3 a potential approach to alleviate pain. Biohaven Ltd.’s BHV-2100 is the only selective TRPM3 antagonist in clinical development. The company recently disclosed the work leading to its discovery and early development, as well as the chemical structure.