Fecal microbiome predicts treatment response after the initiation of semaglutide or empagliflozin uptake

ContextThe gut microbiome has been shown to be in a bidirectional interaction with type 2 diabetes medications that have been in clinical use for several decades. However, the bidirectional effects of novel type 2 diabetes drugs semaglutide, empagliflozin, and the gut microbiome have yet to be clearly described. ObjectiveWe investigate the effect of semaglutide and empagliflozin initiation on the gut microbiome of type 2 diabetes patients. In addition, we analyze whether the pre-treatment gut microbiome can predict the treatment efficacy. MethodsGut microbiome fecal samples donated at four timepoints (Baseline, Month 1, Month 3; Month 12) were studied using 16S ribosomal RNA gene sequencing and analysis. Subjects additionally donated plasma and urine samples for quantitative measurement of clinical markers before treatment initiation and at Months 3 and 12. Repeated measures ANOVA paired with paired t-tests were used to analyze the effects of drug initiation on the gut microbiome. Pearson correlation was used to identify microbial features associated with the change in clinical parameters. ResultsSemaglutide and empagliflozin use is associated with changes in the gut microbiome after treatment initiation, but changes in microbial diversity were not detected. The baseline gut microbiome predicted changes in glycohemoglobin for semaglutide and empagliflozin users. ConclusionOur findings suggest that semaglutide and empagliflozin impact the gut microbial community during treatment. In addition, the baseline gut microbiome can predict semaglutide treatment effects.