Slastnikova et al. reported that 125I-labelled EGFR-targeted MNTs (125I-N-succinimidyl-4-guanidinomethyl-3-[125I] iodobenzoate (SGMIB)-MNT) efficiently transported over 60% of the internalised radioactivity into the nucleus of EGFR-positive human epidermoid carcinoma A431 cells and human glioblastoma D247 MG cells after 1 h of incubation in vitro (Slastnikova et al. 2012). Here, EGFR is linked to glioblastoma.