In previous studies, CCND2 and CCND3 have been identified to be involved in oncogenesis, whereas the role of them were inconsistent and inconclusive in several studies.6, 17, 18 Hence, we conducted a meta‐analysis including all eligible case‐control studies to investigate the prognostic role of cyclin D2/D3 in multiple human malignant neoplasms. The gene discussed is CCND2; the disease is cancer.