In line with these results, cBioPortal analysis of a TCGA HNSCC data set for 517 tumor specimens showed that expression of ALDH1A3 had a tendency toward co-occurrence with CD44 expression, whereas expression of ALDH1A1 and AKT1 as well as ALDH1A1 and ALDH1A3 genes tended to be mutually exclusive (Figure 5D). This evidence concerns the gene ALDH1A1 and neoplasm.