Aldehyde dehydrogenase 1 family, member A1 (ALDH1A1) and aldehyde dehydrogenase 3 family, member A1 (ALDH3A1) have been identified as a biomarker for cancer stem-like cells including pancreatic cancer stem-like cells [11]. The gene discussed is ALDH3A1; the disease is pancreatic neoplasm.