Disorders A - Z:   A    B   C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Skip secondary menu

NINDS Aicardi Syndrome Information Page


Table of Contents (click to jump to sections)


Listen to this page using ReadSpeaker


What is Aicardi Syndrome?

Aicardi syndrome is a rare genetic disorder that primarily affects newborn girls. The condition is sporadic, meaning it is not known to pass from parent to child. (An exception is a report of two sisters and a pair of identical twins, all of whom were affected.) The mutation that causes Aicardi syndrome has not been identified, but it is thought to be caused by a dominant mutation that appears for the first time in a family in an x-linked gene that may be lethal in certain males.. Aicardi syndrome can be seen in boys born with an extra "X" chromosome. (Females have two X chromosomes, while males normally have an X and a Y chromosome.) The precise gene or genetic mechanism causing Aicardi syndrome is not yet known.

Originally, Aicardi syndrome was characterized by three main features: 1) partial or complete absence of the structure (corpus callosum) that links the two halves of the brain (2) infantile spasms (a type of seizure disorder), and 3) chorioretinal lacunae, lesions on the retina that look like yellowish spots. However, Aicardi syndrome is now known to have a much broader spectrum of abnormalities than was initially described. Not all girls with the condition have the three features described above and many girls have additional feature such as lower tone around the head and trunk, microcephaly (small head circumference), and spasticity in the limbs.

Typical findings in the brain of girls with Aicardi syndrome include heterotopias, which are groups of brain cells that, during development, migrated to the wrong area of brain; polymicrogyria or pachygyria, which are numerous small, or too few, brain folds; and cysts, (fluid filled cavities) in the brain. Girls with Aicardi syndrome have varying degrees of intellectual disability and developmental delay. Many girls also have developmental abnormalities of their optic nerves and some have microphthalmia (small eyes). Skeletal problems such as absent or abnormal ribs and abnormalities of vertebrae in the spinal column (including hemivertebrae and butterfly vertebrae) have also been reported. Some girls also have skin problems, facial asymmetry, small hands, and an increased incidence of tumors.

(Aicardi syndrome is distinct from Aicardi-Goutieres syndrome, which is an inherited encephalopathy that affects newborn infants.)

Is there any treatment?

There is no cure for Aicardi syndrome nor is there a standard course of treatment. Treatment generally involves medical management of seizures and programs to help parents and children cope with developmental delays. Long-term management by a pediatric neurologist with expertise in the management of infantile spasms is recommended.

What is the prognosis?

The prognosis for girls with Aicardi syndrome varies according to the severity of their symptoms. There is an increased risk for death in childhood and adolescence, but survivors into adulthood have been described.

What research is being done?

The NINDS supports and conducts research on neurogenetic disorders such as Aicardi syndrome. The goals of this research are to locate and understand the genes involved and to develop techniques to diagnose, treat, prevent, and ultimately cure disorders such as Aicardi syndrome.

NIH Patient Recruitment for Aicardi Syndrome Clinical Trials

Organizations

Column1 Column2
Aicardi Syndrome Foundation
P.O. Box 3202
St. Charles, IL   60174
web@aicardisyndrome.org
http://www.aicardisyndrome.org
Tel: 800-374-8518

The Arc of the United States
1825 K Street, NW
Suite 1200
Washington, DC   20006
Info@thearc.org
http://www.thearc.org
Tel: 202-534-3700 800-433-5255
Fax: 202-534-3731

March of Dimes
1275 Mamaroneck Avenue
White Plains, NY   10605
askus@marchofdimes.com
http://www.marchofdimes.com
Tel: 914-997-4488 888-MODIMES (663-4637)
Fax: 914-428-8203

National Organization for Rare Disorders (NORD)
55 Kenosia Avenue
Danbury, CT   06810
orphan@rarediseases.org
http://www.rarediseases.org
Tel: 203-744-0100 Voice Mail 800-999-NORD (6673)
Fax: 203-798-2291

National Eye Institute (NEI)
National Institutes of Health, DHHS
31 Center Drive, Rm. 6A32 MSC 2510
Bethesda, MD   20892-2510
2020@nei.nih.gov
http://www.nei.nih.gov
Tel: 301-496-5248

National Institute of Mental Health (NIMH)
National Institutes of Health, DHHS
6001 Executive Blvd. Rm. 8184, MSC 9663
Bethesda, MD   20892-9663
nimhinfo@nih.gov
http://www.nimh.nih.gov
Tel: 301-443-4513/866-415-8051 301-443-8431 (TTY)
Fax: 301-443-4279



Prepared by:
Office of Communications and Public Liaison
National Institute of Neurological Disorders and Stroke
National Institutes of Health
Bethesda, MD 20892



NINDS health-related material is provided for information purposes only and does not necessarily represent endorsement by or an official position of the National Institute of Neurological Disorders and Stroke or any other Federal agency. Advice on the treatment or care of an individual patient should be obtained through consultation with a physician who has examined that patient or is familiar with that patient's medical history.

All NINDS-prepared information is in the public domain and may be freely copied. Credit to the NINDS or the NIH is appreciated.

Last updated September 4, 2012