GE11 is a 12-amino acid residue peptide of the sequence YHWYGYTPQNVI, which has been reported to bind to EGFR with high affinity and specificity (Kd 22 nM), to be internalized preferentially into cells with high EGFR expression levels and to accumulate in EGFR-overexpressing tumor xenografts after i.v. administration in vivo [26]. Here, EGFR is linked to neoplasm.