EPO and cancer: Risk factors in cancer-associated thrombosis can be patient-related (e.g., ethnicity, age, comorbidities, etc.), cancer-related (e.g., histology, grade, primary site, and initial period after diagnosis, etc.), treatment-related (e.g., chemotherapy, surgery/hospitalization, antiangiogenics, central venous cannulation, erythropoietin stimulating agent/transfusion-related, etc.), and are also related to important biomarkers (e.g., leukocyte and platelet count, D-dimer, hemoglobin, etc.)[57].