TLR4 and triple-A syndrome: Interestingly, we found reduced levels of s-TLR4 in BAV cases with or without AAA in comparison to the two groups of TAV subjects (1.5 ± 1.8 and 8.5 ± 2.1 vs. 12.7 ± 4.3 and 75 ± 5.3(ng/ml), respectively).