PROM1 and glioblastoma: To elaborate further, in the 3’ UTR region from 1885 to 2398, exosomal NSC PCR product had 100% identity to SOX2 (Gene ID: 6657), but SH-SY5Y, GBM and CD133+ GBM derived exosomal PCR products had 1, 1 and 4 SNPs respectively.