Smith-Magenis Syndrome, (SMS), Awareness Day is November 17th. We celebrate all of the SMS community worldwide on this day and strive to elevate awareness of this syndrome on November 17th. Smith-Magenis syndrome (or SMS) is a chromosomal disorder characterized by a recognizable pattern of physical, behavioral, and developmental features. It is caused by a missing piece of genetic material from chromosome 17, referred to as deletion 17p11.2 or caused by a mutation of RAI1. Learn more about SMS by visiting: https://www.prisms.org.