89bio, Inc. is a clinical-stage biopharmaceutical company, which engages in the development and commercialization of innovative therapies for the treatment of liver and cardio-metabolic diseases. The company is headquartered in San Francisco, California and currently employs 93 full-time employees. The company went IPO on 2019-11-11. The firm is focused on the development and commercialization of therapies for the treatment of liver and cardio-metabolic diseases. The Company’s lead product candidate, pegozafermin, a specifically engineered glycoPEGylated analog of fibroblast growth factor 21 (FGF21), is being developed for the treatment of metabolic dysfunction-associated steatohepatitis (MASH). Pegozafermin is engineered to protect against proteolysis and reduce renal clearance and optimize its potency, enabling the potential use of a lower dosage/dose. Pegozafermin has been optimally constructed with two mutations via substitutions with natural amino acids at site-specific positions (173 and 176) toward the C-terminus end of the hormone.