Autoantibodies to Oxidatively Modified Peptide: Potential Clinical Application in Coronary Artery Disease

I. Jung Tsai, Wen Chi Shen, Jia Zhen Wu, Yu Sheng Chang, Ching Yu Lin

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Coronary artery disease (CAD) is a global health issue. Lipid peroxidation produces various by-products that associate with CAD, such as 4-hydroxynonenal (HNE) and malondialdehyde (MDA). The autoantibodies against HNE and MDA-modified peptides may be useful in the diagnosis of CAD. This study included 41 healthy controls (HCs) and 159 CAD patients with stenosis rates of <30%, 30–70%, and >70%. The plasma level of autoantibodies against four different unmodified and HNE-modified peptides were measured in this study, including CFAH1211–1230, HPT78–108, IGKC2–19, and THRB328–345. Furthermore, feature ranking, feature selection, and machine learning models have been utilized to exploit the diagnostic performance. Also, we combined autoantibodies against MDA and HNE-modified peptides to improve the models’ performance. The eXtreme Gradient Boosting (XGBoost) model received a sensitivity of 78.6% and a specificity of 90.4%. Our study demonstrated the combination of autoantibodies against oxidative modification may improve the model performance.

Original languageEnglish
Article number2269
Issue number10
Publication statusPublished - Oct 2022


  • 4-hydroxynonenal
  • machine learning
  • oxidative stress
  • plasma

ASJC Scopus subject areas

  • Clinical Biochemistry


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