Amylyx Pharmaceuticals, Inc. is a clinical-stage pharmaceutical company focused on discovering and developing treatments for neurodegenerative diseases and endocrine conditions in the United States. Its lead investigational product, Avexitide, is a first-in-class GLP-1 receptor antagonist in phase 3 trials for post-bariatric hypoglycemia and congenital hyperinsulinism. The company also develops AMX0035, an oral fixed-dose combination of sodium phenylbutyrate and taurursodiol, in phase 2 trials for Wolfram syndrome and phase 2b/3 trials for progressive supranuclear palsy; AMX0114 in phase 1 trials for amyotrophic lateral sclerosis; and other GLP-1 receptor antagonists, including AMX0318, for post-bariatric hypoglycemia and rare diseases. Founded in 2013, Amylyx is headquartered in Cambridge, Massachusetts.