Effect of upper gastrointestinal disease on the pharmacokinetics of oral semaglutide in subjects with type 2 diabetes

Aims

The glucagon-like peptide-1 analogue, semaglutide, has been co-formulated with the absorption enhancer, sodium N-(8-[2-hydroxybenzoyl] amino) caprylate, for oral administration. This trial investigated whether upper gastrointestinal (GI) disease had any effect on the exposure of oral semaglutide, an important consideration given that its absorption occurs primarily in the stomach.

Materials and methods

In an open-label, parallel-group trial (NCT02877355), subjects aged 18–80 years with type 2 diabetes with mild-to-moderate upper GI disease (N=36; chronic gastritis [n=5], gastroesophageal reflux disease [n=8] and both [n=23]) or without upper GI disease (N=19) received oral semaglutide 3 mg once daily for 5 days, followed by 7 mg for 5 days. The primary and key supportive endpoints were the area under the semaglutide plasma concentration–time curve (AUC) from 0 to 24 hours after last trial product administration on day 10 (AUC0−24h,day10) and the maximum semaglutide plasma concentration (Cmax,day10), respectively.

Results

Semaglutide exposure was not statistically significantly different between subjects with upper GI disease and subjects without upper GI disease. Estimated group ratios (subjects with/without upper GI disease) were 1.18 (95% confidence interval [CI], 0.80, 1.75) for AUC0−24h,day10 and 1.16 (95% CI, 0.77, 1.76) for Cmax. Time to Cmax and semaglutide half-life were similar in subjects with and without upper GI disease. Oral semaglutide was well tolerated; all adverse events were mild-to-moderate, with no withdrawals due to adverse events.

Conclusions

There was no significant difference in exposure to oral semaglutide in subjects with or without upper GI disease, hence no dose adjustment is required.

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