SPTB and triple-A syndrome: The erythrocyte subnetwork, including erythrocyte membrane protein band 4.2 (EPB42) and/or protein 4.1 (EPB41), spectrins beta and alpha 1 (SPTB and SPTA1), and ankyrin-1 (ANK1) is present in each the T-AAA, nT-AAA, and thrombus network (Figures 6A,B).