Key clinical point: The antepartum 75g-oral glucose tolerance test (75g-OGTT) can identify nulliparous pregnant women who are at risk of developing type 2 diabetes mellitus (T2D), even if they tested negative for gestational diabetes (GD).
Major finding: In women without GD, the fasting (adjusted hazard ratio [aHR] 2.82; 95% CI 2.18-3.64), 1-hour (aHR 1.26; 95% CI 1.15-1.37), and 2-hour (aHR 1.14; 95% CI 1.04-1.25) 75g-OGTT values were significantly associated with a future risk of developing T2D, with a model combining all three OGTT values and clinical characteristics being able to detect 43.7% (95% CI 43.2%-44.2%) of women who developed T2D at 5 years after the index pregnancy.
Study details: The data come from a retrospective study of 41,507 nulliparous pregnant women who tested negative for GD using a 75g-OGTT.
Disclosures: This study was funded by the Canadian Institute of Health Research. The authors report no conflicts of interest.
Source: Hiersch L et al. The prognostic value of the oral glucose tolerance test for future type-2 diabetes in nulliparous pregnant women testing negative for gestational diabetes. Diabetes Metab. 2022 (Jun 2). Doi: 10.1016/j.diabet.2022.101364