DPP4 and type 2 diabetes mellitus: In a previous study, the authors found that serum sDPP-4/CD26 correlates positively with the severity of liver fibrosis evaluated by LSM and the FAST score,35 suggesting that serum levels of sDPP-4/CD26 may be considered a new biomarker for liver fibrosis and progressive MASH in people with type 2 diabetes.