Obesity

Melanocortin-4 receptor regulation of endocrine axes and clinical effects of setmelanotide

J Clin Endocrinol MetabPublished Prospective observational cohort study

Authors' conclusion

Setmelanotide exerts pleiotropic effects beyond weight reduction, modulating multiple endocrine axes in BBS.

Study context

Population
Genetically confirmed Bardet-Biedl syndrome (BBS) patients initiating setmelanotide therapy
Participants
58 participants
Outcome
Changes over time on setmelanotide
Follow-up
6 months
Methodological detailssingle-centre, longitudinal, linear mixed-effects models adjusted for age, sex and BMI z-score
  • Single-centre
  • Longitudinal
  • Linear mixed-effects models adjusted for age, sex and BMI z-score

Main finding

As reported in the abstract

  • Significant reductions in BMI and HbA1c
  • Increases in gonadotropins, and in testosterone and estradiol age-dependently
  • IGF-1 increased independently of weight change
  • TSH decreased without corresponding changes in peripheral thyroid hormones
  • Effects established within the first 6 months and stable thereafter

Observational data: associations, not effects.

Original publication

Melanocortin-4 receptor regulation of endocrine axes and clinical effects of setmelanotide. J Clin Endocrinol Metab. Published 1 August 2026. doi:10.1210/clinem/dgag293

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