Loeys-Dietz Syndrome 1, also known as furlong syndrome, is related to loeys-dietz syndrome 2 and loeys-dietz syndrome 5. An important gene associated with Loeys-Dietz Syndrome 1 is TGFBR1 (Transforming Growth Factor Beta Receptor 1), and among its related pathways/superpathways are ERK Signaling and Toll-like receptor signaling pathway. Affiliated tissues include skin and uterus, and related phenotypes are ascending aortic dissection and pulmonary artery aneurysm