BRCA1 and neoplasm: Results show no differences in both PPARγ and BRCA1 among mammary-derived tumours from DMBA-treated PPARγ-MG KO and PPARγ-WT mice (PPARγ: 1822 ± 999 vs. 1459 ± 377, respectively and BRCA1: 1007 ± 432 vs. 1280 ± 258, respectively) (Figure 4B).