ALDH1L1 and cancer: Considering that the information presented by the authors on the expression of ALDH1L1 in A549 and H1299 cell lines contradicts the previously published expression pattern of the protein, as well as their failure to acknowledge commonly observed ALDH1L1 downregulation in cancers and their unsubstantiated statements with incorrect citations, we suggest that this paper needs to be revised in order to prevent misleading the scientific readership.