PPARD and colorectal cancer: A correlative study focused on the relationship between PPARβ/δ protein expression in primary tumors and colorectal cancer patient survival was also performed revealing that colorectal cancer patients with relatively higher expression of PPARβ/δ in the primary tumor (n = 26) were ~ 4× less likely to die from the disease as compared with those patients with relatively lower expression of PPARβ/δ in the primary tumor (n = 38).68 This study was particularly stronger than other studies because the authors confirmed PPARβ/δ expression by western blot.