Berman et al. reported that L5 and another GPC3-targeting peptide, TJ12P1 (DHLASLWWGTEL), had insufficient selectivity for use in accurate tumour imaging.237 To address this, Qin et al. used a two-step phage display to screen the GPC3-specific binding peptide TJ12P2 (SNDRPPNILQKR). Here, GPC3 is linked to neoplasm.