ITIH4 and triple-A syndrome: However, in 7 differentially expressed proteins shared among the sera of CAS, AAA, and TAA patients, quantitative differences of inter-α-trypsin inhibitor heavy chain H4 (gene name: ITIH4) and vitamin D-binding protein (GC) between presurgical and postsurgical sera of CAS patients were significantly distinct from those between presurgical and postsurgical sera of AAA and TAA patients (P < 0.05, ANOVA with post hoc by Scheffé's test).