FDX1 and prostate adenocarcinoma: To assess whether the expression of cuproptosis regulators affects the immune status of patients with PRAD, the expression of seven cuproptosis regulators, including FDX1, LIAS, LIPT1, DLD, DLAT, PDHA1 and PDHB, was compared among patients, and the immune cell infiltration levels of patients were calculated using the CIBERSORT algorithm.