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Rhythm Advances Setmelanotide Data at ENDO 2026, Near-Term Upside Ahead

Jun 15, 2026, 1:11 PM EDT1 sourcesAI-analyzed

Why it may matterVerify against the original reporting

Positive six-month trial readouts bolster near-term investor interest; the stock already rose ~5% on the data, suggesting favorable sentiment. However, small sample size and Phase 2 limitations temper upside expectations.

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What happened, with direct paths to the underlying reporting

Rhythm presented six-month Phase 2 results for setmelanotide in obesity/PWS at ENDO 2026, showing BMI reductions, hyperphagia improvements, and a stable safety profile. With 17 of 18 patients still on treatment through week 52, the data support early efficacy signals and continued readouts. If durability holds, Rhythm could gain momentum ahead of longer-term results and potential commercialization milestones.

Six-month setmelanotide data show BMI, body composition, hyperphagia, and behavior improvements.
ENDO 2026 presentation; trial enrolled 18 patients aged 6–23.
As of June 12, 2026, 17 participants remain on active treatment.
BMI mean down 3.06% across 17 evaluable; adults 3.11%, pediatrics 3.00%.
Hyperphagia improved; 8/10 with moderate-to-severe hyperphagia achieved ≥7-point HQ-CT reduction.

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