Research

Hormonal

S-309309, a novel oral inhibitor of monoacylglycerol O-acyltransferase 2 (MGAT2), demonstrates acceptable safety and tolerability in healthy adults with or without obesity, with no clinically meaningful differences in pharmacokinetics between obese and non-obese individuals.

S-309309 is an experimental oral medication that inhibits MGAT2 to potentially aid weight management. Early trials show it is safe and well-tolerated in both obese and non-obese adults, with no significant drug interactions or cardiac effects observed at tested doses. It is not yet approved for general use.

GoodSupportsHIGH confidence
S-309309 demonstrated acceptable safety and tolerability unlike diacylglycerol transferase 1 inhibitors and lipase inhibitors. S-309309 exhibited a favorable pharmacokinetic profile, and its absorption remained unaffected by food intake. S-309309 did not show any drug interaction with midazolam.
Tôru Ishibashi et al. · Clinical Drug Investigation · 2025

Why this rating

Phase I RCT, double-blind, placebo-controlled, but small sample size (N=74) and short duration.

Source

Safety, Tolerability, and Pharmacokinetics of a Novel Anti-obesity Agent, S-309309, in Healthy Adults with or Without Obesity

Tôru Ishibashi et al. · Clinical Drug Investigation · 2025

DOI 10.1007/s40261-024-01418-3

rct · n=74Cited 2×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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