Celgene (CELG) Announces Presentation of GED-0301 Phase 1b Data in Active Crohn’s Disease

October 17, 2016 6:30 AM EDT

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Celgene International Sàrl, a wholly-owned subsidiary of Celgene Corporation (Nasdaq: CELG), announced that data from a randomized, double-blind, multicenter, exploratory phase 1b study evaluating the effects of investigational oral GED-0301 (mongersen) 160 mg on both endoscopic response and clinical remission in patients with active Crohn’s disease will be presented in Vienna, Austria at the United European Gastroenterology Week (UEGW).

Patients with active Crohn’s disease [Crohn’s disease activity index (CDAI) score 220-450], a total simple endoscopic score for Crohn’s disease (SES-CD) ≥7, or an ileal disease SES-CD ≥4, were randomized to three different active treatment regimens of four, eight or 12 weeks of GED-0301 160 mg daily, followed by an observation period off treatment. Endoscopic and clinical assessments were reported through week 12. A total of 63 patients were enrolled in the study.

The study was designed to further enhance the understanding of GED-0301 activity in a difficult-to-treat, moderate to severe patient population. This population was more diverse than prior GED-0301 studies and included patients with endoscopically confirmed mucosal damage at entry and those who had previous surgeries. The study also included both biologic-exposed and biologic-naïve patients, as well as patients with a diagnosis of Ileitis, Ileocolitis or colitis.

Clinical improvement was seen by week 2, and clinical response (CDAI decrease ≥100) and remission (CDAI <150) rates were highest in the 12-week treatment group at 67 and 48 percent respectively, at week 12. The mean CDAI reduction from baseline at week 12 in the 12-week treatment group was 133 points. Of the patients with evaluable endoscopies at week 12 (n=52), 37 percent had an endoscopic response (≥25 percent reduction in SES-CD score from baseline), with no meaningful difference across treatment groups. In addition, of those patients with greater endoscopic disease activity at baseline (SES-CD score of >12; n=16), 63 percent exhibited a reduction ≥25 percent in SES-CD score and 31 percent had a reduction of ≥50 percent.

The rates of adverse events and serious adverse events were low and similar across treatment groups. There were no new safety signals for oral GED-0301 160 mg daily reported in this study.

“A significant number of Crohn’s disease patients don’t reach remission with current therapies or will suffer relapses over time and are in need of new treatment options,” said Brian Feagan, MD, Director of Robarts Clinical Trials at Robarts Research Institute, Western University, London, Ontario, Canada. “Based on these findings, oral GED-0301 has the potential to provide a new, oral option with a novel mechanism of action designed to act locally.”

“We are encouraged that oral GED-0301 showed both meaningful endoscopic improvement and clinical remission at an early time point in this study," said Scott Smith, President, Celgene Inflammation & Immunology. "The fact that this study included nearly 50 percent biologic-experienced patients further reflects the potential of GED-0301 as a novel approach for patients with Crohn’s disease searching for alternatives."

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