NCAPD2 and neoplasm: We also investigated the correlation between NCAPD2 expression and clinical features, tumor mutation burden (TMB), microsatellite instability (MSI), tumor microenvironment (TME), immune checkpoints, deoxyribonucleic acid (DNA), ribonucleic acid (RNA) methylation, and drug sensitivity to discuss the molecular mechanisms of NCAPD2 in carcinogenesis, clinical outcomes, and immunotherapy for various human tumors.