The situation also becomes more complicated, as in several different tumor types such as prostate [348,349,350], bladder [351], pancreatic cancer [352], and myxoid liposarcoma [353], high levels of PPARγ expression in tumor cells are correlated with enhanced metastasis formation; this also indicates that a general beneficial effect of PPARγ expression in tumor cells on metastasis inhibition cannot be concluded. This evidence concerns the gene PPARG and familial pancreatic carcinoma.