We implanted AT3 tumor cells into the inguinal mammary fat pads of Ptpn2fl/fl control versus Lck-Cre;Ptpn2fl/fl T cell-specific PTPN2-deficient female mice and once tumors were established (20-30 mm2) treated tumor-bearing mice with Compound 182. The gene discussed is PTPN2; the disease is neoplasm.