MGMT and neuroblastoma: Around 10 neuroblastoma cell lines (SMS-SAN, SMS-KCNR, CHLA-42, CHLA-171, CHLA-136, SK-N-RA, SK-N-BE(2), CHLA-90, CHLA-119 and CHLA-172) were tested for MGMT RNA and protein expression by TaqMan RT-PCR and immunoblotting, respectively (Figure 1A and B).