The χ2 test of the clinical parameters of CAD patients revealed that the rate of CAD family history and dyslipidemia was closely relevant to lncRNA-HEIH expression in the serum of CAD patients, but no significant relevance was found between its level and some other indicators, such as gender, age, BMI, smoking, and hypertension history (Table 1). Here, HEIH is linked to coronary artery disorder.