Cai et al. [41], Wang et al. [50], Wu et al. [51], Lubowicka et al. [46], and Hefler et al. [42] report elevated levels of serum CCL2 in patients with lung, liver, gastric, breast, and ovarian cancer and that increased serum CCL2 was associated with poor prognosis. The gene discussed is CCL2; the disease is ovarian carcinoma.