Journal Article

DNA methylation markers for kidney function and progression of diabetic kidney disease

Lim, Cadmon King Poo, So, Wing Yee, Huang, Chuiguo, Yip, Kevin Y., Tam, Claudia Ha Ting, Ma, Ronald C. W., Li, Kelly Yichen, Lan, Hui-yao, Jiang, Guozhi, Liu, Hongbo, Lee, Heung Man, Hanson, Robert L., Susztak, Katalin, Chan, Juliana C. N., Szeto, Cheuk-Chun, Nelson, Robert G., Day, Samantha, Shi, Mai

2023

Overview

Epigenetic markers are potential biomarkers for diabetes and related complications. Using a prospective cohort from the Hong Kong Diabetes Register, we perform two independent epigenome-wide association studies to identify methylation markers associated with baseline estimated glomerular filtration rate (eGFR) and subsequent decline in kidney function (eGFR slope), respectively, in 1,271 type 2 diabetes subjects. Here we show 40 (30 previously unidentified) and eight (all previously unidentified) CpG sites individually reach epigenome-wide significance for baseline eGFR and eGFR slope, respectively. We also develop a multisite analysis method, which selects 64 and 37 CpG sites for baseline eGFR and eGFR slope, respectively. These models are validated in an independent cohort of Native Americans with type 2 diabetes. Our identified CpG sites are near genes enriched for functional roles in kidney diseases, and some show association with renal damage. This study highlights the potential of methylation markers in risk stratification of kidney disease among type 2 diabetes individuals. Epigenetic markers are potential biomarkers for diabetes and related complications. Here, the authors identify CpG sites associated with kidney function and its subsequent decline using both single-site and multisite analyses, which are shown to have functional significance in the kidney.

• Publisher: Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
• Subject: 45 / 45/61 / 631/208/177 / 692/163/2743/137/138 / 692/308/575 / 692/699/1585 / Biomarkers / CpG islands / Diabetes / Diabetes mellitus (non-insulin dependent) / Diabetes Mellitus, Type 2 - complications / Diabetes Mellitus, Type 2 - genetics / Diabetes Mellitus, Type 2 - metabolism / Diabetic Nephropathies - genetics / Diabetic Nephropathies - metabolism / Diabetic nephropathy / Disease Progression / DNA methylation / DNA Methylation - genetics / Epidermal growth factor receptors / Epigenetics / Genetic Markers / Glomerular filtration rate / Humanities and Social Sciences / Humans / Indigenous peoples / Kidney - metabolism / Kidney diseases / Kidneys / multidisciplinary / Native Americans / Prospective Studies / Renal Insufficiency, Chronic - genetics / Science / Science (multidisciplinary)