CDKN1A and cancer: In ARMS cells, miRNA commonly enriched in exosomes showed 12 significant networks, 5 of which included more than one identified miRNA, with nodes centering on proteins implicated in cancer biology, metastasis, and stemness, such as GSK3b, MDM2, CDKN1A (Fig. 3d); PRKACA and MYO1C (Fig. 3e); CASR, CCR2 and BRINP3 (Fig. 3f); CDKN2A, SOX2, YBX1 and POU5F1 (Fig. 3g); and CXCL8, IFNAR1, CSF1, and IGF1R (Fig. 3h).