Hepatic steatosis and hepatocyte injury did not differ between AAV‐TBG Nampt‐treated Fut2△IEC mice and AAV‐TBG vector‐treated Fut2△IEC mice, as measured by H&E and Oil Red O staining, along with serum ALT and AST levels (Figure 6B–D). This evidence concerns the gene SERPINA7 and steatosis.