Fourteen factors were selected, including sample source, radiotherapy, blood culture, exposure to antibiotics after susceptibility testing, lymphocyte-to-monocyte ratio (LMR), lymphocyte-to-monocyte ratio (LMR), total protein (TP), blood urea nitrogen (BUN), calcium (CA), C-reactive protein (CRP), triglyceride (TG), procalcitonin (PCT), prothrombin time (PT), and thrombin time (TT), which were found to be associated with 30-day mortality in cancer patients with CRO infections. The gene discussed is F2; the disease is cancer.