Cells in cluster 5 resembled those in cluster 7 of DNs, and included cells with aberrant neuronal identity that expressed neuronal genes (GAP43, NEFM, DCX, HES6) and cancer-related proliferative genes (CRABP1, MYC, SFRP1) (Fig. 3c, Supplementary Data 3). This evidence concerns the gene CRABP1 and cancer.