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Prognostic Value of Elevated Homocysteine Levels in Korean Patients with Coronary Artery Disease: A Propensity Score Matched Analysis

 Sung Woo Kwon  ;  Jong-Youn Kim  ;  Young Ju Suh  ;  Dae Hyung Lee  ;  Young Won Yoon  ;  Byoung Kwon Lee  ;  Young-Hak Jung  ;  Eui-Young Choi  ;  Bum-Kee Hong  ;  Se-Joong Rim  ;  Hyuck Moon Kwon 
 Korean Circulation Journal, Vol.46(2) : 154-160, 2016 
Journal Title
 Korean Circulation Journal 
Issue Date
Coronary artery disease ; Homocysteine ; Prognosis
BACKGROUND AND OBJECTIVES: We sought to determine whether an elevated homocysteine (Hcy) level is associated with a worse prognosis in Korean patients with coronary artery disease (CAD). SUBJECTS AND METHODS: A total of 5839 patients (60.4% male, mean age 61.3±11.2 years) with CAD were enrolled from 2000 to 2010 at Gangnam Severance Hospital. CAD was diagnosed by invasive coronary angiography. Laboratory values including Hcy level were obtained on the day of coronary angiography and analyses were performed shortly after sampling. Patients were divided into two groups according to their Hcy levels. Baseline risk factors, coronary angiographic findings, length of follow-up, and composite endpoints including cardiac death (CD) and non-fatal myocardial infarction (NFMI) were recorded. 1:1 propensity score matched analysis was also performed. RESULTS: Over a mean follow-up period of 4.4±2.5 years, there were 132 composite endpoints (75 CD and 57 NFMI) with an event rate of 2.3%. Mean Hcy level was 9.9±4.3 µmol/L (normal Hcy 7.9±1.5 µmol/L and elevated Hcy 13.9±5.1 µmol/L). Kaplan-Meier survival analysis showed an association of elevated Hcy level with worse prognosis (p<0.0001). In addition, a multivariate Cox regression analysis showed an association of elevated Hcy level with worse prognosis for both the entire cohort (hazard ratio [HR] 2.077, 95% confidence interval [CI] 1.467-2.941, p<0.0001) and the propensity score matched cohort (HR 1.982, 95% CI 1.305-3.009, p=0.001). CONCLUSION: Elevated Hcy level is associated with worse outcomes in Korean patients with CAD.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
권혁문(Kwon, Hyuck Moon) ORCID logo https://orcid.org/0000-0001-9901-5015
김종윤(Kim, Jong Youn) ORCID logo https://orcid.org/0000-0001-7040-8771
윤영원(Yoon, Young Won) ORCID logo https://orcid.org/0000-0002-0907-0350
이병권(Lee, Byoung Kwon) ORCID logo https://orcid.org/0000-0001-9259-2776
임세중(Rim, Se Joong) ORCID logo https://orcid.org/0000-0002-7631-5581
최은영(Choe, Eun Yeong)
홍범기(Hong, Bum Kee) ORCID logo https://orcid.org/0000-0002-6456-0184
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