Integration of scRNA‐seq data (Figure 4I,J, GSE175698) showed distinct differences in gene expression between SIX2+CITED1+ cells from hFK and WT, WT xenografts and the tumor of origin (WT‐TOT); similarities between WT SIX2+CITED1+ cells and their tumor of origin (WT‐TOT) are evident. The gene discussed is SIX2; the disease is neoplasm.