The R2* values acquired in Th-MYCN and Th-ALKF1174L/Th-MYCN were ∼43% lower than those determined at 7T in this study, are consistent with previously published values (Jamin et al, 2014), and with those reported from human tumours at 3T (Hallac et al, 2012; Li et al, 2015; Bane et al, 2016; Panek et al, 2016). The gene discussed is MYCN; the disease is neoplasm.