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Roche’s obesity drug boosts blood sugar control, drives 15.5% weight loss in mid-stage trial

By Thomson Reuters Sep 22, 2026 | 6:24 AM

Sept 22 (Reuters) – Swiss drugmaker Roche said on Tuesday its experimental dual-acting obesity drug helped overweight or obese patients with type 2 diabetes lower blood ​sugar levels and lose an average 15.5% ‌of their body weight in a mid-stage trial.

Roche is racing alongside large drugmakers, including AstraZeneca and Amgen, to break into the lucrative obesity drug market and challenge leaders Eli Lilly and Novo ‌Nordisk.

Here ​are more details:

• Roche’s experimental ⁠drug, enicepatide, is a ⁠once-weekly injection that mimics GLP-1 and GIP hormones to reduce appetite and regulate blood sugar.

• Patients who received 24 milligrams of enicepatide, the highest dose, saw ​significant reductions in levels of HbA1c at 48 weeks, meeting the two main goals of the study, ⁠Roche said. HbA1c is a ⁠measure of blood-glucose levels over time.

• About ​62% of patients achieved HbA1c levels below 5.7%, bringing their ​blood sugar levels into the non-diabetic range, the ‌company said.

• About 2% of patients in the 447-patient study taking enicepatide discontinued treatment due to side effects, compared with none in the placebo group, it added.

• ⁠Most gastrointestinal side effects, which are common with the class of medications, were mild to moderate, the company said.

• Roche ⁠is betting ‌on next-generation treatments in a market expected ⁠to exceed $100 billion annually within the ​next decade.

• ‌In a mid-stage trial reported in ​June, enicepatide ⁠helped overweight or obese patients without diabetes lose 22.7% of their body weight.

• Roche said it plans to start late-stage glycemic-control and cardiovascular outcomes studies in the first half of 2027.

(Reporting by Mariam Sunny in Bengaluru; Editing ​by Shreya Biswas)