KRAS and neoplasm: However, the same dose of P7170 was not very effective in mice bearing erlotinib-insensitive H1975 [EGFR T790M, L858R; KRAS wild type; PIK3CA wild type] xenografts, but treatment with a15 mg/kg dose resulted in a significant tumor growth inhibition (92% TGI, p < 0.001, Table 2).