Evaluation of novel glomerular filtration rate estimation equations in adolescents and young adults with type 1 diabetes

• Published in: Journal of diabetes and its complications 2022-01, Vol.36 (1), p.108081-108081, Article 108081
• Main Authors: Gaebe, Karolina, White, Christine A., Mahmud, Farid H., Scholey, James W., Elia, Yesmino T., Sochett, Etienne B., Cherney, David Z.
• Format: Article
• Language: English
• Subjects: Accuracy; Adolescent; Age; Bias; Blood pressure; Child; Chromatography; Clinical medicine; Creatinine; Diabetes; Diabetes Mellitus, Type 1 - complications; Diabetes Mellitus, Type 1 - diagnosis; Glomerular Filtration Rate; Glucose; Humans; Insulin; Kidney diseases; Laboratories; Mass spectrometry; Methods; Pediatrics; Performance evaluation; Renal Insufficiency, Chronic - complications; Renal Insufficiency, Chronic - diagnosis; Renal Insufficiency, Chronic - epidemiology; Scientific imaging; Teenagers; Type 1 diabetes; Urine; Vital signs; Young Adult; Young adults
• ISSN: 1056-8727; 1873-460X
• DOI: 10.1016/j.jdiacomp.2021.108081

Individuals with type 1 diabetes (T1D) are at an increased risk of chronic kidney disease making estimation of glomerular filtration rate (eGFR) an important component of diabetes care. Which eGFR equation is most appropriate to use in patients with T1D during the transition to adult care is unclear. We, therefore, sought to evaluate the performance of five eGFR equations in adolescents and young adults with T1D. Measured iohexol-based glomerular filtration rate was compared to the Chronic Kidney Disease and Epidemiology Collaboration (CKD-EPI) eGFR, Chronic Kidney Disease in Children (CKiD) eGFR, and three recently developed age-adjusted versions of these in 53 patients with T1D and preserved GFR using bias, precision, and accuracy. The best performance was found in the sex-dependent CKiD equation (bias: −0.8, accuracy: 11.8 ml/min/1.73 m2). Bias and accuracy (26.4 and 26.8 ml/min/1.73 m2) were worst in the CKD-EPI equation. Age-dependent adjustment improved performance for this equation (bias: 5.3, accuracy: 13.4 ml/min/1.73 m2), but not for the CKiD equation (bias: 15.5, accuracy: 18.8 ml/min/1.73 m2). Age-adjustment improved performance for the CKD-EPI equation, but not for the CKiD equation. The sex-adjusted CKiD equation performed best out of all equations. •Patients with type 1 diabetes are at an increased risk of chronic kidney disease.•Estimation of glomerular filtration rate (eGFR) is essential in diabetes care.•Differing pediatric and adult equations complicate eGFR assessment in young adults.•Recently developed age-or-sex-adjusted eGFR equations showed improved performance.