Akero Therapeutics Inc.’s phase IIb data with FGF21 analogue efruxifermin (EFX) in patients with pre-cirrhotic metabolic dysfunction-associated steatohepatitis (MASH) kept interest alive in the face-off between the company and 89bio Inc. with pegozafermin, another FGF21 drug targeting MASH, for which a phase III study is planned.