Deleting FGF21 from LSD1-LKO liver partially reversed the improved hepatic steatosis (Figure 8C), likely due to the FGF21-dependent alteration of lipid uptake (Cd36) and secretion (ApoB, ApoA4, and ApoA5) (Figure 8D). The gene discussed is KDM1A; the disease is Hepatic steatosis.