Gestational diabetes & diabetes in pregnancy

The utility of plasma glycated CD59 in predicting postpartum glucose intolerance: A prospective study of women diagnosed with GDM during a period of universal GDM screening

Diabet MedPublished Prospective diagnostic accuracy study

Authors' conclusion

Our study found that PP pGCD9 may be a promising biomarker to identify women not requiring PP glucose intolerance screening using the traditional OGTT. While the diagnostic accuracy of pGCD59 is good, fasting plasma glucose remains a better test for the identification of PP glucose intolerance.

Study context

Population
Women with prior GDM (World Health Organization (WHO) 2013 criteria, 2 h 75 g OGTT at 24–28 weeks) during universal GDM screening; PP glucose intolerance by 2 h 75 g OGTT, ADA criteriaof 2017 recruited
Participants
140 women
Comparison
PP Plasma glycated CD59 (pGCD59) vs PP FPG for predicting PP glucose intolerance
Outcome
Ability of PP pGCD59 to predict PP glucose intolerance (2 h 75 g OGTT, ADA criteria), by nonparametric ROC curves
Follow-up
Postpartum

Performance

As reported in the abstract

Identification of PP glucose intolerance
Test or modelAUCSensitivity at cut-off 1.9 SPUSpecificity at cut-off 1.9 SPUPPV at cut-off 1.9 SPUNPV at cut-off 1.9 SPU
PP pGCD590.80 (95% CI: 0.70-0.91)100% (95% CI: 83.9-100)16.9% (95% CI: 9.8-26.3)22.1% (95% CI: 21.0-22.6)100% (95% CI: 87.4-100)
PP FPG0.96 (95% CI: 0.89-0.99)— not stated in the abstract— not stated in the abstract— not stated in the abstract— not stated in the abstract

AUC

PP pGCD590.80 (95% CI: 0.70-0.91)
PP FPG0.96 (95% CI: 0.89-0.99)

Sensitivity at cut-off 1.9 SPU

PP pGCD59100% (95% CI: 83.9-100)
PP FPG— not stated in the abstract

Specificity at cut-off 1.9 SPU

PP pGCD5916.9% (95% CI: 9.8-26.3)
PP FPG— not stated in the abstract

PPV at cut-off 1.9 SPU

PP pGCD5922.1% (95% CI: 21.0-22.6)
PP FPG— not stated in the abstract

NPV at cut-off 1.9 SPU

PP pGCD59100% (95% CI: 87.4-100)
PP FPG— not stated in the abstract

— not stated in the abstract

Further findings

PP pGCD59 levels: PP glucose intolerance vs normal glucose tolerance · postpartum

PP pGCD59 levels: PP glucose intolerance vs normal glucose tolerance · postpartum

Significantly higher PP pGCD59 with PP glucose intolerance

Original publication

The utility of plasma glycated CD59 in predicting postpartum glucose intolerance: A prospective study of women diagnosed with GDM during a period of universal GDM screening. Diabet Med. Published 2 May 2023. doi:10.1111/dme.15121

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