SLC34A2 and neoplasm: As shown in Tables 3 and Table 4, logistic regression analysis indicated that PTCs with a high SLC34A2 protein expression in tumor tissue was identified as the independent predictor for the risk of both capsular invasion [univariate analysis: odds ratio (OR) = 7.917, 95% confidence interval (CI) =1.473-42.538, P=0.016; multivariate analysis: OR=11.400; 95% CI=1.733-74.995, P=0.011)] and extra-thyroid metastasis (univariate analysis: OR=4.622, 95% CI=1.240-17.266, P=0.023; multivariate analysis: OR=4.920, 95% CI =1.234-19.623, P=0.024) in PTCs.