Unexpectedly, it has been described that those high levels of ALDHA1 expression did not relate to highly malignant phenotypes and poor clinical outcomes in some types of cancers [60]; maybe it depended on the method used to scope ALDH1A1 expression (i.e., flow cytometry or immunohistochemistry with an ALDHA1 antibody), sample size, or types of tissues [61,62]. Here, ALDH1A1 is linked to cancer.