Riley-Day syndrome

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Chromosomes and DNA

Riley-Day syndrome is an inherited disorder that affects nerve function throughout the body. Symptoms are present at birth and grow worse over time.

Familial dysautonomia; Hereditary sensory and autonomic neuropathy - type III

Riley-Day syndrome is inherited as an autosomal recessive trait, which means that a person must inherit a copy of the malfunctioning gene from each parent in order to develop the condition.

It is seen most often in people of Eastern European Jewish ancestry (Ashkenazi Jews), where the incidence is 1 in 3,700. The disease is caused by mutation of the IKBKAP gene on chromosome 9. It is rare in the general population.

Review Date: 12/11/2006
Reviewed By: Brian Kirmse, MD, Mount Sinai School of Medicine, Department of Human Genetics, New York, NY. Review provided by VeriMed Healthcare Network.