Exhibit 99.1 89bio Reports First Quarter 2024 Financial Results and Provides Corporate Update –Initiated Phase 3 ENLIGHTEN-Fibrosis trial in non-cirrhotic (F2-F3) metabolic dysfunction-associated steatohepatitis (MASH) patients– –Expect to initiate ENLIGHTEN-Cirrhosis trial this quarter in MASH patients with compensated cirrhosis (F4)– –Granted Priority Medicines (PRIME) status from the European Medicines Agency (EMA) for pegozafermin in the treatment of MASH with fibrosis and compensated cirrhosis– –Data f ...