Loeys-Dietz Syndrome 5, also known as rienhoff syndrome, is related to loeys-dietz syndrome 1 and pulsating exophthalmos. An important gene associated with Loeys-Dietz Syndrome 5 is TGFB3 (Transforming Growth Factor Beta 3), and among its related pathways/superpathways are ERK Signaling and Signal Transduction. Affiliated tissues include heart and skin, and related phenotypes are ptosis and hypotonia