Ribonucleotide reductase adjust the M2 (RRM2) was not detected in normal or tumor tissues by HPA056994 antibody staining, but survival analysis of this gene from the HPA database indicated that the 5-year survival rate of patients with high RRM2 expression (39%) was significantly lower than that of patients with low RRM2 expression (77%). Here, RRM2 is linked to neoplasm.