Volume 29, Issue 3 pp. 352-363
Invited Reviews

Familial dysautonomia

Felicia B. Axelrod MD

Corresponding Author

Felicia B. Axelrod MD

Departments of Pediatrics and Neurology, New York University Medical Center, 530 First Avenue, New York, New York 10016, USA

Departments of Pediatrics and Neurology, New York University Medical Center, 530 First Avenue, New York, New York 10016, USASearch for more papers by this author
First published: 17 February 2004
Citations: 175

Abstract

Familial dysautonomia (FD) is a neurodevelopmental genetic disorder within the larger classification of hereditary sensory and autonomic neuropathies, each caused by a different genetic error. The FD gene has been identified as IKBKAP. Mutations result in tissue-specific expression of mutant IκB kinase-associated protein (IKAP). The genetic error probably affects development, as well as maintenance, of neurons because there is neuropathological and clinical progression. Pathological alterations consist of decreased unmyelinated and small-fiber neurons. Clinical features reflect widespread involvement of sensory and autonomic neurons. Sensory loss includes impaired pain and temperature appreciation. Autonomic features include dysphagia, vomiting crises, blood pressure lability, and sudomotor dysfunction. Central dysfunction includes emotional lability and ataxia. With supportive treatment, prognosis has improved greatly. About 40% of patients are over age 20 years. The cause of death is usually pulmonary failure, unexplained sudden deaths, or renal failure. With the discovery of the genetic defect, definitive treatments are anticipated. Muscle Nerve 29: 352–363, 2004

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