PTPRC and carotid atherosclerosis: Furthermore, binary logistic regression analysis of bile acid in this study revealed that GCA (OR: 0.99, P = 0.020), LCA (OR: 0.83, P = 0.002), and GUDCA (OR: 0.99, P = 0.003) were protective against carotid atherosclerosis, whereas TDCA (OR: 1.05, P = 0.002), GCDCA (OR: 1.01, P < 0.001), and DCA (OR: 1.01, P = 0.005) were independent risk factors for CAS.