Factors Related to the Glucose-Lowering Efficacy of Dipeptidyl Peptidase-4 Inhibitors: A Systematic Review and Meta-Analysis Focusing on Ethnicity and Study Regions.

Several systematic reviews and meta-analyses have been conducted including an analysis to investigate the difference between ethnic groups in the glucose-lowering efficacy of dipeptidyl peptidase-4 (DPP-4) inhibitors. This study assessed the factors related to the glucose-lowering efficacy and explored potential differences among ethnicities; in particular, Japanese subjects were dealt separately from other Asian subjects.