ALDH7A1 and prostate cancer: Overexpression of isoforms 1A3, 3A2 and 7A1 in ovarian cancer appear to be a more consistent finding.18 ALDH7A1 overexpression is reported to contribute to metastasis in prostate cancer.19 Overexpression of ALDH3A1 has also been identified in prostate cancer and hepatocellular carcinoma.