Liraglutide, a glucagon-like peptide-1 (GLP-1) analog, significantly increases the abundances of Lachnospiraceae_UCG-001 and Lachnospiraceae_NK4A136_group nonalcoholic in db/db mice with nonalcoholic fatty liver (Liu et al., 2020), suggesting that the decrease of Lachnospiraceae is beneficial for T2DM. Here, GCG is linked to type 2 diabetes mellitus.