Continuing the theme of clinical congruence with subtle differences in certain findings (Table S1B) are higher frequencies of long fingers and tall stature in FBN1 patients, of several POTS symptoms in all the heart–vessel (Vs) patients, and of bowel irregularity–bloating–dysphagia in COL3 patients whose vascular EDS homologs have high risks for bowel ischemia [7]. Here, FBN1 is linked to postural orthostatic tachycardia syndrome.