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Rhythm Pharmaceuticals

Rhythm Pharmaceuticals

Biopharmaceutical Company

Appears in 1 story

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FDA expands treatment options for obesity with rare and mainstream drug approvals

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Imcivree launches in largest indication; monitors GLP-1 competition in obesity space

For patients who gained severe, uncontrollable weight after brain tumor surgery—often as children—there has never been an approved medication. That changed on March 19, 2026, when the Food and Drug Administration (FDA) approved Imcivree (setmelanotide) for acquired hypothalamic obesity, a condition affecting roughly 10,000 Americans whose damaged hypothalamus makes diet and exercise essentially useless. In clinical trials, patients lost 18.4% more body mass than those on placebo over one year. Two weeks later, on April 1, the FDA approved Eli Lilly's Foundayo (orforglipron), the first GLP-1 pill taken without food restrictions, achieving 12.4% weight loss.

Updated Apr 1