We tested sera from CHD patients infected with H. pylori vs. control sera of uninfected healthy donors by the enzyme-linked immunosorbent assay (ELISA) using antigenic complex of surface H. pylori proteins called a glycine acid extract (GE) and synthetic peptides: P1 peptide consisting of TNFR amino acid sequence (TVLLPLVIFF) and control P2 peptide containing neutral sequence (IAKEGFEKIS). Here, TNFRSF1A is linked to coronary artery disorder.