Relative to the normal reference value range and COIVD-19 patients without cancer, cancer patients with COVID-19 showed a lower erythrocyte count, ×109/L (3.88, IQR [3.21–4.09]) and hemoglobin level, ×109/L (114.00, IQR [102.00–273.50]), a higher neutrophil count, ×109/L (3.95, IQR [2.73–6.04]) and higher levels of CRP, mg/L (35.10, IQR [5.68–81.90]). This evidence concerns the gene CRP and COVID-19.