GPT and COVID-19: As shown in Supplementary Table S2, COVID-19 patients of older age (HR = 9.823 for ⩾70 vs. <40; HR = 3.361 for 40–69 vs. <40), comorbidity of hypertension (HR = 3.161), abnormal ALT (HR = 1.657), abnormal cTnI (HR = 2.513) or abnormal myohaemoglobin (HR = 2.671) suffered from inferior survival.