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Spyre says bowel disease drug cuts inflammation in mid-stage trial

By Thomson Reuters Jun 15, 2026 | 7:28 AM

June 15 (Reuters) – Spyre Therapeutics said on Monday its experimental bowel disease drug met the main goal of significantly reducing disease ​severity in a mid-stage trial.

Here are some ‌details:

• The company is testing the drug, SPY002, in patients with moderate-to-severe ulcerative colitis that causes long-lasting ulcers and inflammation in the digestive tract.

• The drug significantly reduced ‌disease ​severity as measured by a ⁠microscopic scoring system that ⁠assesses inflammation and tissue damage in the colon — cutting scores by 10.7 points after 12 weeks of treatment, the company said.

• Secondary results ​showed 33% of patients achieved clinical remission, while 42% showed improvement on endoscopy, meaning the ⁠colon looked less inflamed ⁠when examined with a camera.

• SPY002 ​is an experimental antibody designed to last longer in ​the body and target TL1A, a protein ‌that drives inflammation and tissue damage in inflammatory bowel disease.

• The study involved patients who had long-standing disease, with an average duration of about ⁠seven years, and more than a third had previously received advanced treatments.

• SPY002 was well tolerated, with a ⁠safety profile consistent ‌with other drugs targeting TL1A, ⁠Spyre added.

• The most common side ​effects were ‌joint pain, high blood pressure, nausea, ​ulcerative colitis ⁠flare-ups, and viral respiratory infections.

• The trial is a two-part mid-stage study testing three experimental drugs – SPY001, SPY002 and SPY003 – alone and in combinations in patients with moderate-to-severe ulcerative colitis.

(Reporting by Siddhi Mahatole ​in Bengaluru)