Drug Approved for Rare Forms of Obesity

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FDA has approved a Rhythm Pharmaceutical NDA for Imcivree (setmelanotide) for chronic weight management (weight loss and weight maintenance for at least one year) in patients six years and older with obesity due to three rare genetic conditions: pro-opiomelanocortin (POMC) deficiency, proprotein subtilisin/kexin type 1 (PCSK1) deficiency, and leptin receptor (LEPR) deficiency confirmed by genetic testing demonstrating variants in POMC, PCSK1, or LEPR genes considered pathogenic (causing disease), likely pathogenic, or of uncertain significance. Imcivree is not approved for obesity due to suspected POMC, PCSK1, or LEPR deficiency with variants not causing disease or likely benign, or other types of obesity, including obesity associated with other genetic syndromes and general (polygenic) obesity, an agency release says.

 

Imcivree works by activating areas in the brain that regulate appetite and fullness, FDA says, adding that the drug also increases resting metabolism, which can contribute to weight loss. “While Imcivree leads to weight loss in patients with obesity associated with these conditions, it does not treat the genetic defects that cause the conditions or other symptoms or signs,” it says. These obesity conditions are very rare, with only around 150 reported in the medical literature for all three combined. 

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