Type 2 & other diabetes

Glycemia and Insulin Secretion in Cystic Fibrosis 2 Years After Elexacaftor/Tezacaftor/Ivacaftor: PROMISE-ENDO

J Clin Endocrinol MetabPublished Prospective observational cohort study

Authors' conclusion

After 2 years of ETI, fasting glucose and HbA1c showed modest decreases. Glucose tolerance varied, and overall measures of insulin secretion did not deteriorate.

Study context

Population
People with cystic fibrosis (pwCF) ≥12 years with at least one F508del allele starting elexacaftor/tezacaftor/ivacaftor (ETI), 10 CF Centers
Participants
79 completed baseline oral glucose tolerance tests (OGTTs)
Exposure
Before vs 12–18 and 24–30 months after ETI initiation
Outcome
Glycemia and insulin secretion
Follow-up
24-30 months
Methodological detailssubstudy of PROMISE, multicenter, longitudinal mixed effects models, OGTTs completed: n = 68 at 12-18 months, n = 58 at 24-30 months
  • Substudy of PROMISE
  • Multicenter
  • Longitudinal mixed effects models
  • OGTTs completed: n = 68 at 12-18 months, n = 58 at 24-30 months

Main finding

As reported in the abstract

24-30 months
Fasting glucose (mg/dL), median [IQR], baseline to 24-30 months, subset not on insulin (n = 61)
94 [92, 96] to 90 [88, 93], P = .02
Hemoglobin A1c (HbA1c) decreased by 24-30 months
5.8% (5.6%, 5.9%) to 5.5% (5.4%, 5.6%), P < .001
Insulin sensitivity (mU/L-1 min-1) decreased
8.4 [7.2, 9.5] vs 6.8 [5.8, 7.9], P = .03
No changes in oral disposition index
P = .14

Observational data: associations, not effects.

Original publication

Glycemia and Insulin Secretion in Cystic Fibrosis 2 Years After Elexacaftor/Tezacaftor/Ivacaftor: PROMISE-ENDO. J Clin Endocrinol Metab. Published 9 December 2024. doi:10.1210/clinem/dgae857

Composed by AI from the published abstract and checked against it. How Briefs are made →

Get them every week

New studies on this topic in My Week and in your Monday e-mail.

We e-mail you a sign-in link and a code. No password, no spam.