MELTF and cancer: We have previously shown that melanotransferrin (MTf; Uniprot P08582), a mammalian iron-transport protein (Food et al., 1994; Rothenberger et al., 1996; Demeule et al., 2002; Moroo et al., 2003; Yang et al., 2004), can deliver anti-cancer drugs that reduce the in situ growth of brain tumours (Karkan et al., 2008).