Tumour volume of 4T1 tumour-bearing mice treated with a single i.v. dose of [177Lu]-DOTAGA-GARP (at a dose of 3.7MBq or 11.7MBq) or unlabelled-DOTAGA-GARP or vehicle (PBS) was measured three times a week (Fig. 4A). The gene discussed is LRRC32; the disease is neoplasm.