Linafexor, a Pulsatile FXR Agonist, Augments Low-Dose Semaglutide for Weight Loss in Adults with Obesity, MASH, and Type 2 Diabetes

Key numbers

• 6.17% vs
• 95% CI
• 5% weight loss

Caveats

• Preprint; not yet peer reviewed.

Glucagon-like peptide-1 (GLP-1) receptor agonists produce less weight loss in people with type 2 diabetes than without, and higher compensatory doses are limited by gastrointestinal adverse events and lean-mass loss--leaving patients with obesity, type 2 diabetes, and metabolic dysfunction-associated steatohepatitis (MASH) inadequately treated. We tested whether linafexor, a pulsatile farnesoid X receptor (FXR) agonist, could augment the weight-loss efficacy of low-dose semaglutide in this population while preserving tolerability. In this multicenter, randomized, double-blind, placebo-controlled, phase 2 trial, 62 adults with obesity (body-mass index, 30-45 kg/m2), treatment-naive type 2 diabetes, and MASH (MRI-PDFF [≥]10%) were assigned to linafexor (4 mg orally once daily) or placebo, each with semaglutide (0.5 mg once weekly), for 16 weeks. The primary outcome was the percentage change in body weight at week 16. Adding linafexor more than doubled weight loss (-6.17% vs. -2.91%; treatment difference, -3.26%; 95% CI, -5.35 to -1.18; P=0.003), and more participants achieved at least 5% weight loss (53.3% vs. 28.1%; P=0.046). Consistent with this, combination therapy further reduced visceral adipose tissue (treatment difference, -13.85 cm2; P=0.035), the liver enzymes alanine aminotransferase and {gamma}-glutamyl transferase, and serum bile acids, whose changes correlated with weight and liver-enzyme improvements--associations absent with monotherapy. Gastrointestinal adverse events were comparable (23.3% vs. 18.8%), with no treatment-related serious adverse events or discontinuations. Thus, in a population with blunted GLP-1 responses, adding linafexor to low-dose semaglutide enhanced weight loss and improved body composition and hepatic measures while preserving tolerability--a dose-sparing, mechanism-complementary strategy (ClinicalTrials.gov number, NCT06492330).

Y. Zhang, Y. Chen, S. Huang, L. Jiang, Y. Wang, J. Ma, R. Deng, J. Du, L. Xia, Y. Ma, P. Wu, W. Zhang, C. Liu, G. Zhao, G. Wang, M. Qian, H. Lin, F. Yan, G. Ning, H. E. Xu, W. Wang

Leverage2 / 5

Reusable within one subfield (a technique, dataset, or protocol a few groups will adopt).

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Magnitude3 / 5

Large gain: roughly 2x, or a clear new state of the art on a hard, unsaturated problem.

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Evidence4 / 5

Strong: large scale, preregistered, independently replicated, or a well-powered randomized trial.

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Novelty2 / 5

A new combination of known ideas.

8% of this desk’s rubric

Trajectory2 / 5

Some room to improve with obvious engineering.

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Stakes3 / 5

Meaningful benefit to many people within a few years.

25% of this desk’s rubric

• Citations0 (reference 20, via semantic-scholar, Oct 22, 2026, 06:17 UTC)

• Reviewed by heuristic-v7 on Oct 22, 2026, 06:17 UTC. Paper type: clinical.
• Categories: endocrinology
• TOP, No.2 in the Medicine edition of October 22, 2026.