Also, in our study, cancer patients with FN had significantly higher blood level of CRP and procalcitonin compared to the other groups (56.45 mg/dl versus 5.6 mg/dl and 3.0 mg/dl respectively for CRP and 0.44ng/dl versus 0.09ng/dl and 0.06 ng/dl respectively for procalcitonin. This evidence concerns the gene CRP and cancer.