ALDH1A2 and cancer: Aldehyde dehydrogenases are aldehyde-converting enzymesALDH1 subgroup of enzymes is engaged in protection of cancer cells against chemotherapy and radiationALDH1A1 and ALDH1A2 are the most popular phenotypes found in OCSCsALDH1 activates the Wnt/β-catenin pathway and transmembrane transporters