Genetic regulation of pigment epithelium-derived factor (PEDF): An exome-chip association analysis in Chinese subjects with type 2 diabetes

Chloe Y.Y. Cheung, Chi Ho Lee, Clara S. Tang, Aimin Xu, Ka Wing Au, Carol H.Y. Fong, Kelvin K.K. Ng, Kelvin H.M. Kwok, Wing Sun Chow, Yu Cho Woo, Michele M.A. Yuen, Jo Jo Hai, Kathryn C.B. Tan, Tai Hing Lam, Hung Fat Tse, Pak Chung Sham, Karen S.L. Lam

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17 Citations (Scopus)

Abstract

Elevated circulating levels of pigment epithelium-derived factor (PEDF) have been reported in patients with type 2 diabetes (T2D) and its associated microvascular complications. This study aimed to 1) identify the genetic determinants influencing circulating PEDF levels in a clinical setting of T2D, 2) examine the relationship between circulating PEDF and diabetes complications, and 3) explore the causal relationship between PEDF and diabetes complications. An exome-chip association study on circulating PEDF levels was conducted in 5,385 Chinese subjects with T2D. A meta-analysis of the association results of the discovery stage (n = 2,936) and replication stage (n = 2,449) was performed. The strongest association was detected at SERPINF1 (p.Met72Thr; Pcombined = 2.06 3 10257; b [SE] 20.33 [0.02]). Two missense variants of SMYD4 (p.Arg131Ile; Pcombined = 7.56 3 10225; b [SE] 0.21 [0.02]) and SERPINF2 (p.Arg33Trp; Pcombined = 8.22 3 10210; b [SE] 20.15 [0.02]) showed novel associations at genome-wide significance. Elevated circulating PEDF levels were associated with increased risks of diabetic nephropathy and sight-threatening diabetic retinopathy.

Original languageEnglish
Pages (from-to)198-206
Number of pages9
JournalDiabetes
Volume68
Issue number1
DOIs
Publication statusPublished - Jan 1 2019
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2018 by the American Diabetes Association.

ASJC Scopus Subject Areas

  • Internal Medicine
  • Endocrinology, Diabetes and Metabolism

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