MT-ND4 and coronary artery disorder: m.11251A>G (rs869096886, p = 0.0011, MAF = 0.20) represents a synonymous sequence variant in the ND4 gene and m.15452C>A (rs193302994, p = 0.0017, MAF = 0.20) is a non-synonymous (Leu→Ile) sequence variant in the CYB gene; both were found more frequently in SOFT CAD cases vs. controls (OR = 1.03; 95% CI 1.01–1.05).