Clinical Hold Placed on Zafgen Diabetes Therapy

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FDA has placed a clinical hold on a Zafgen clinical trial of ZGN-1061, the company’s second-generation, investigational MetAP2 inhibitor currently in development for treating Type 2 diabetes. The agency cited the possibility of cardiovascular (CV) safety risk based on the company’s prior compound and outlined multiple paths to move forward, including nonclinical or clinical options that could address the concern, Zafgen says. The company scrapped its first-generation MetAP2 inhibitor beloranib after reporting in 2015 a second death in a trial involving patients with Prader-Willi syndrome.

 

Zafgen plans to assess the FDA options and request a Type A meeting with the agency to discuss next steps with the program. The company also says it continues to advance its ongoing outside-the-U.S. Phase 2 clinical trial of ZGN-1061, which includes a 1.8 mg dose cohort. Dosing in this clinical trial, it says, was recently completed and no CV safety signals have been observed to date. The company expects to report topline data from this cohort in early 2019.

 

MetAP2 inhibitors work by re-establishing balance to how the body packages and metabolizes fat, Zafgen says. “Inhibitors of MetAP2 reduce the production of new fatty acid molecules by the liver and help to convert stored fats into useful energy,” it adds.

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