CXCR4 and COVID-19: In the COVID-19 dataset, CXCR4 (AUC:0.733), ENO1 (AUC:0.809), FASN (AUC:0.830), HIST1H4I (AUC:0.755), HIST1H4K (AUC:0.743), TUBA4A (AUC:0.811) and TUBB3 (AUC:0.814) exhibited relatively good diagnostic efficiency for distinguishing the patients with COVID-19 from healthy controls.