However, its function in tumour progression remains controversial.10, 12 Some previous studies have suggested that the activation of PPARγ can prevent tumours in tissues such as the lung, colon, prostate, breast and others,13, 14 while others have revealed that activated PPARγ is oncogenic.18, 19 Therefore, the role of PPARγ in tumorigenesis needs to be further clarified. This evidence concerns the gene PPARG and neoplasm.