Clinical Research Papers:
NEURL rs6584555 and CAND2 rs4642101 contribute to postoperative atrial fibrillation: a prospective study among Chinese population
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Tiemin Wei1,*, Jingjing Song2,*, Min Xu2,*, Lingchun Lv1,*, Chong Liu1, Jiayi Shen1 and Ying Huang3
1 Vasculocardiology Department, The Fifth Affiliated Hospital of Wenzhou Medical University, Affiliated Lishui Hospital of Zhejiang University, The Central Hospital of Zhejiang Lishui, Lishui, Zhejiang, P.R. China
2 Department of Radiology, The Fifth Affiliated Hospital of Wenzhou Medical University, Affiliated Lishui Hospital of Zhejiang University, The Central Hospital of Zhejiang Lishui, Lishui, Zhejiang, P.R. China
3 Department of Cardiology, Sichuan Medical University, Sichuan, P.R. China
* These authors have contributed equally to this article
Tiemin Wei, email:
Keywords: susceptibility; atrial fibrillation; coronary artery bypass graft surgery; SNP
Received: December 10, 2015 Accepted: April 16, 2016 Published: May 17, 2016
Postoperative atrial fibrillation (POAF) is a serious, common complication after coronary artery bypass grafting (CABG) surgery. Recently, 5 novel loci were identified to be associated with atrial fibrillation susceptibility using a combination of genotyping, eQTL mapping, and functional validation. In current study, we aim to evaluated the positive findings for POAF susceptibility after CABG among Chinese population, using a population-based, two-stage, nested case-control study with 1,400 patients. NEURL rs12415501 and CAND2 rs4642101 were significantly associated with POAF susceptibility after CABG among Chinese population in both stages. When pooled together, the ORs for each additional copy of minor allele was 1.29 (95% CI: 1.13-1.48, P = 1.7×10-4) for NEURL rs12415501, and 1.21 (95% CI: 1.08-1.36, P = 9.8×10-4) for CAND2 rs4642101. Functional validation experiments found the AF risk allele of NEURL rs6584555 and CAND2 rs4642101 correlated with an increased expression of its corresponding genes (P<0.001). In this independently collected cardiac surgery cohort, we replicated the previous findings, and 2 novel loci are independently associated with POAF risk in patients who undergo CABG surgery in Chinese population.
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