DGKI and Hashimoto thyroiditis: As shown in Figures 3F–K, the expression level of DGKI was significantly related to the T stage (T1 and 2 vs. T3 and 4, P=1.1e-04), N stage (N0 vs. N1, P=1.1e-05), pathological stage (stages III and IV vs. stage I and II, P=3.5e-05), histological type (follicular vs. classical, P=3.0e-07, follicular vs. tall cell P=4.7e-09, classical vs. tall cell P=3.1e-03), extrathyroidal extension (No vs. Yes, P=3.7e-06), and thyroid gland disorder history (lymphocytic thyroiditis vs. nodular hyperplasia, P=0.01).