Evidence map›Paper›PMID 34537845›Full record

Observational studyThe Journal of clinical endocrinology and metabolism2022

The Relationship Between Continuous Glucose Monitoring and OGTT in Youth and Young Adults With Cystic Fibrosis.

Christine L Chan, Laura Pyle, Tim Vigers, Philip S Zeitler, Kristen J Nadeau

Registry-linked trialOpen access · bronzeAbstract readObservational Study
In one paragraph

Observational study in The Journal of clinical endocrinology and metabolism, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06837181 (Studying the Presence of CFRD Complications With Thoughtful Recruitment), which is not on this map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.3field-weighted citation impact, top 10% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT06837181 recruitingnot on this mapstarted 2025, after this paper: background citation

Studying the Presence of CFRD Complications With Thoughtful Recruitment (SPeCTRuM)

TypeobservationalSponsorJaeb Center for Health ResearchRan2025 to 2028Enrolled200ConditionsCystic Fibrosis (CF), Cystic Fibrosis-related Diabetes, Diabetes, RetinopathyArmsobservational study
3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Use of technology in prediabetes and precision prevention.Journal of diabetes investigation · 2025
    Review
  6. Article
  7. Review
  8. Review
  9. Article
  10. Endocrine Complications of Cystic Fibrosis.Clinics in chest medicine · 2022
    Review
  11. Review
  12. Observational
  13. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Christine L ChanDepartment of Pediatrics, Pediatric Endocrinology, Children's Hospital Colorado and University of Colorado Anschutz Medical Center, Aurora, Colorado 80045, USA.ORCID 0000-0003-3067-7672
Laura PyleDepartment of Biostatistics, Colorado School of Public Health, Aurora, Colorado 80045, USA.ORCID 0000-0001-5577-8221
Tim VigersDepartment of Pediatrics, Pediatric Endocrinology, Children's Hospital Colorado and University of Colorado Anschutz Medical Center, Aurora, Colorado 80045, USA.ORCID 0000-0001-7087-8570
Philip S ZeitlerDepartment of Pediatrics, Pediatric Endocrinology, Children's Hospital Colorado and University of Colorado Anschutz Medical Center, Aurora, Colorado 80045, USA.ORCID 0000-0001-5756-7858
Kristen J NadeauDepartment of Pediatrics, Pediatric Endocrinology, Children's Hospital Colorado and University of Colorado Anschutz Medical Center, Aurora, Colorado 80045, USA.ORCID 0000-0002-0477-3356
Children's Hospital Colorado · USColorado School of Public Health · US

Funding

Colorado Clinical and Translational Sciences InstituteUL1TR001082 · NCATS · UNIVERSITY OF COLORADO DENVER · PI SOKOL, RONALD J. · 2013 to 2017
$48.0M
PILOT STUDY--SUBSTRATE METABOLISM IN EXTREMELY LOW BIRTH WEIGHT INFANTSP30DK048520 · NIDDK · UNIVERSITY OF COLORADO DENVER · PI Wendy M Kohrt · 1995 to 2026
$32.6M
Colorado Clinical and Translational Science Institute (UL1)UL1TR000154 · NCATS · UNIVERSITY OF COLORADO DENVER · PI SOKOL, RONALD J. · 2012 to 2013
$20.4M
University of Colorado Anschutz Medical Campus DRCP30DK116073 · NIDDK · UNIVERSITY OF COLORADO DENVER · PI PETER J DEMPSEY · 2020 to 2026
$10.8M
K12 Career DevelopmentK12DK094712 · NIDDK · UNIVERSITY OF COLORADO DENVER · PI STECK, ANDREA · 2011 to 2021
$4.5M
The Next Generation of Innovative Cardiovascular Clinical/Translational ResearchersK24HL145076 · NHLBI · UNIVERSITY OF COLORADO DENVER · PI NADEAU, KRISTEN JANE · 2019 to 2023
$574k
NCATS NIH HHS UL1 TR000154NCATS NIH HHS UL1 TR001082NHLBI NIH HHS K24 HL145076NIDDK NIH HHS DK-094712-04NIDDK NIH HHS K12 DK094712NIDDK NIH HHS P30 DK048520NIDDK NIH HHS P30 DK116073NIH HHS UL1-TR-001082
6 · The paper itself

Abstract

contextEarly glucose abnormalities in people with cystic fibrosis (PwCF) are commonly detected by continuous glucose monitoring (CGM). Relationships between these CGM abnormalities and oral glucose tolerance testing (OGTT) in PwCF have not been fully characterized.

objectiveThis work aimed to determine the relationship between CGM and common OGTT-derived estimates of β-cell function, including C-peptide index and oral disposition index (oDI) and to explore whether CGM can be used to screen for OGTT-defined prediabetes and cystic fibrosis-related diabetes (CFRD).

methodsPwCF not on insulin and healthy controls aged 6 to 25 years were enrolled in a prospective study collecting OGTT and CGM. A subset underwent frequently sampled OGTTs (fsOGTT) with 7-point glucose, insulin, and C-peptide measurements. Pearson correlation coefficient was used to test the association between select CGM and fsOGTT measures. Receiver operating curve (ROC) analysis was applied to CGM variables to determine the cutoff optimizing sensitivity and specificity for detecting prediabetes and CFRD.

resultsA total of 120 participants (controls = 35, CF = 85), including 69 with fsOGTTs, were included. CGM coefficient of variation correlated inversely with C-peptide index (Cpeptide30-Cpeptide0/Glucose30-Glucose0) (r = -0.45, P < .001) and oDIcpeptide (C-peptide index)(1/cpep0) (r = -0.48, P < .0001). In PwCF, CGM variables had ROC - areas under the curve ranging from 0.43 to 0.57 for prediabetes and 0.47 to 0.6 for CFRD.

conclusionGreater glycemic variability on CGM correlated with reduced β-cell function. However, CGM performed poorly at discriminating individuals with and without OGTT-defined CFRD and prediabetes. Prospective studies are now needed to determine how well the different tests predict clinically relevant nonglycemic outcomes in PwCF.

Indexed as

AdolescentAdultBlood GlucoseCase-Control StudiesChildCystic FibrosisDiabetes MellitusFemaleGlucose Tolerance TestHealthy VolunteersHumansMaleMonitoring, PhysiologicPrediabetic StateProspective StudiesRisk AssessmentBlood Glucosecontinuous glucose monitoringcystic fibrosis–related diabetesoral disposition indexoral glucose tolerance testingscreening

Identifiers

PMID34537845
PMCPMC8764335
OpenAlexW3200512145

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.