Nevertheless, several types of tumours demonstrated CYP4Z1 expression, including carcinomas of adrenal cortex, squamous cells of oesophagus, lung and cervix, astrocytoma, melanoma and seminoma, as well as adenocarcinomas of colon, ovary, prostate and endometrium (Figure 2). The gene discussed is CYP4Z1; the disease is colon adenocarcinoma.