Cambrian Biotech Reports 5% Visceral Fat Loss From Exercise-Mimicking Pill in 23-Patient Trial
Updated
Updated · Business Insider · Jun 22
Cambrian Biotech Reports 5% Visceral Fat Loss From Exercise-Mimicking Pill in 23-Patient Trial
1 articles · Updated · Business Insider · Jun 22
Summary
Cambrian Biotech said 23 prediabetic adults with obesity taking its once-daily ATX-304 pill raised resting metabolic rate and cut visceral fat by about 5% in an initial human safety study.
ATX-304 aims to burn more calories rather than suppress appetite, positioning it as an alternative to GLP-1 drugs that can drive substantial muscle loss and frailty during weight reduction.
The early data land in a crowded race to improve the quality of weight loss, with Eli Lilly's bimagrumab showing more than 90% body-fat loss when added to Ozempic and Novo Nordisk's CagriSema posting 67% fat loss.
A larger midstage trial is expected to read out at the end of 2027, while physicians and regulators still want proof these drugs improve outcomes such as strength, falls and walking speed before broad adoption.
Will Lilly's muscle-builder or Novo's new combo dethrone Ozempic as the king of weight loss drugs?
Are we on the verge of an 'exercise pill' that builds muscle and burns fat without the gym?
ATX-304’s Phase 1b Success: A First-in-Class Oral Exercise Mimetic Shows Muscle-Sparing, Metabolic Benefits in 2026 Human Trials
Overview
Cambrian Biotech has announced promising Phase 1b results for ATX-304, an investigational oral drug designed to mimic the metabolic effects of exercise. Presented at the American Diabetes Association’s 86th Scientific Sessions in June 2026, the findings reveal that ATX-304 activates AMPK, a key enzyme for cellular energy balance, through a unique mechanism at both the cellular and mitochondrial levels. Unlike existing treatments, ATX-304 boosts energy metabolism without depleting ATP, offering a new approach to treating metabolic diseases. These results highlight ATX-304’s potential to safely improve metabolic health and support muscle preservation.