&lt;strong&gt;Identification of a Common Variant for Coronary Heart Disease at&lt;/strong&gt; &lt;em&gt;&lt;strong&gt;PDE1A&lt;/strong&gt;&lt;/em&gt; &lt;strong&gt;Contributes to Individualized Treatment Goals and Risk Stratification of Cardiovascular Complications in Chinese Patients With Type 2 Diabetes&lt;/strong&gt;

Ip Tim Lau,Anthony Keech,Xiaodan Fan,Chiu Chi Tsang,Claudia H.T Tam,Guozhi Jiang,Yu Huang,Alice P.S Kong,Yuk Lun Cheng,Field Study Investigators,Heung-Man Lee,Ka Fai Lee,The ,Kam Piu Lau,Juliana C.N Chan,Chun Chung Chow,Baoqi Fan,Cheuk Chun Szeto,Eric S.H Lau,Risa Ozaki,Hoi Man Cheung,Grace Hui,Weichuan Yu,Man Wo Tsang,The Transcend Consortium,Shing Chung Siu,Emmy Lau,Cadmon K.P Lim,Brian Tomlinson,Grace Kam,June K.Y Li,Mai Shi,Eric F.c Cheung ,Hui‐Yao Lan ,Vincent Yeung ,S.k.h Fung ,Wing‐Yee So ,Nelson L S Tang ,Si Liu ,Ting‐Fung Chan ,Stephen Kwok Wing Tsui ,Jason C S Leung ,Stanley F Lo ,Rong Ma ,Alicia J Jenkins ,Kevin Y Yip ,Andrea Luk ,Elaine Chow ,Alex Ng

doi:10.2337/figshare.22734467.v1

Abstract

Objective: This study aims to unravel genetic determinants of coronary heart disease (CHD) in type 2 diabetes (T2D) and explore their applications. Research Design and Methods: We performed a two-stage genome-wide association studies for CHD in Chinese patients with T2D (3,596 cases and 8,898 controls), followed by replications in European patients with T2D (764 cases and 4,276 controls) and general populations (n=51,442-547,261). Each identified variant was examined for its association with a wide range of phenotypes, and its interactions with glycaemic, blood pressure (BP) and lipid controls on incident cardiovascular diseases. Results: We identified a novel variant (rs10171703) for CHD (OR [95% CI] = 1.21 [1.13–1.30]; P=2.4×10-8) and BP (β±SE = 0.130±0.017; P = 4.1×10-14) at PDE1A in Chinese T2D patients, but found only a modest association with CHD in general populations. This variant modulated the effects of BP goal attainment (130/80 mmHg) on CHD (Pinteraction = 0.0155) and myocardial infarction (MI) (Pinteraction = 5.1×10-4). Patients with CC-genotype of rs10171703 had >40% reduction in either cardiovascular events in response to BP control (2.9×10-8 < P < 3.6×10-5), those with CT-genotype had no difference (0.0726 < P < 0.2614), and those with TT-genotype had a threefold increase in MI risk (P = 6.7×10-3). Conclusions: We discovered a novel CHD- and BP-related variant at PDE1A which interacted with BP goal attainment with divergent effects on CHD risk in Chinese patients with T2D. Incorporating this information may facilitate individualized treatment strategies for precision care in diabetes only when our findings are validated.

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