Pediatric endocrinology

Intranasal Carbetocin Reduces Hyperphagia, Anxiousness, and Distress in Prader-Willi Syndrome: CARE-PWS Phase 3 Trial

J Clin Endocrinol MetabPublished Randomised controlled trial

  • Enrollment stopped prematurely because of onset of the COVID-19 pandemic

Authors' conclusion

Carbetocin was well tolerated, and the 3.2-mg dose was associated with clinically meaningful improvements in hyperphagia and anxiousness and distress behaviors in participants with PWS.

Study context

Population
Participants with Prader-Willi syndrome aged 7 to 18 years; 24 ambulatory clinics at academic medical centersenrollment stopped early (COVID-19)
Participants
130 participants
Comparison
Intranasal carbetocin 9.6 mg or 3.2 mg vs placebo, 3 times daily
Primary endpoint
Change in hyperphagia (HQ-CT) and obsessive-compulsive symptoms (CY-BOCS), 9.6 mg vs placebo
Follow-up
8-week placebo-controlled period
Methodological detailsdouble-blind, placebo-controlled, phase 3, long-term follow-up, multicentre
  • Double-blind
  • Placebo-controlled
  • Phase 3
  • Long-term follow-up
  • Multicentre

Primary result

As reported in the abstract

HQ-CT and CY-BOCS, 9.6 mg vs placebo
  • Numeric improvements in both HQ-CT and CY-BOCS, not statistically significant

Secondary outcomes

HQ-CT, PADQ and clinical global impression of change (CGI-C), 3.2 mg vs placebo · 8-week placebo-controlled period

Nominally significant improvements in HQ-CT, PADQ and CGI-C scores with 3.2 mg vs placebo

Long-term follow-up · 56-week long-term follow-up period

Improvements were sustained in the long-term follow-up period

Safety

Adverse events · 8-week placebo-controlled period

Most common adverse event: mild to moderate flushing

Original publication

Intranasal Carbetocin Reduces Hyperphagia, Anxiousness, and Distress in Prader-Willi Syndrome: CARE-PWS Phase 3 Trial. J Clin Endocrinol Metab. Published 12 January 2023. doi:10.1210/clinem/dgad015

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