CYP4Z2P pseudogene derived from CYP4Z1 (cytochrome P450 family 4 subfamily Z member 1) has been implicated in breast cancer progression by sponging miR-125a, miR-197, miR-204, miR-211, and miR-1226 from CYP4Z1, resulting in enhanced tumor angiogenesis, tamoxifen resistance, and reduced apoptosis [136,137,138]. The gene discussed is CYP4Z1; the disease is neoplasm.