Diseases & Conditions


Agenesis of Corpus Callosum

Synonyms of Agenesis of Corpus Callosum
  • ACC
  • Corpus Callosum, Agenesis

Disorder Subdivisions

  • Acquired Form of ACC
  • Aicardi Syndrome
  • Autosomal Recessive Inheritance ACC (e.g. Andermann syndrome)
  • X-Linked Dominant Inheritance ACC (e.g. ARX)

General Discussion
Agenesis of corpus callosum (ACC) is a rare disorder that is present at birth (congenital). It is characterized by a partial or complete absence (agenesis) of an area of the brain that connects the two cerebral hemispheres. This part of the brain is normally composed of transverse fibers. The cause of agenesis of corpus callosum is usually not known, but it can be inherited as either an autosomal recessive trait or an X-linked dominant trait. It can also be caused by an infection or injury during the twelfth to the twenty-second week of pregnancy (intrauterine) leading to developmental disturbance of the fetal brain. Intrauterine exposure to alcohol (Fetal alcohol syndrome) can also result in ACC. In some cases mental retardation may result, but intelligence may be only mildly impaired and subtle psychosocial symptoms may be present.

ACC is frequently diagnosed during the first two years of life. An epileptic seizure can be the first symptom indicating that a child should be tested for a brain dysfunction. The disorder can also be without apparent symptoms in the mildest cases for many years.

Organizations related to Agenesis of Corpus Callosum
  • Agenesis of the Corpus Callosum (ACC) Network
    5749 Merrill Hall
    Orono ME 04469-5749
    Phone #: 207-581-3119
    800 #: --
    e-mail: [email protected]
    Home page: N/A
  • Birth Defect Research for Children
    930 Woodcock Rd
    Orlando FL 32803
    Phone #: 407-895-0802
    800 #: --
    e-mail: [email protected]
    Home page: http://www.birthdefects.org
  • Guardians of Hydrocephalus Research Foundation
    2618 Avenue Z
    Brooklyn NY 11235
    Phone #: 718-743-4473
    800 #: 800-458-8655
    e-mail: [email protected]
    Home page: N/A
  • Hydrocephalus Association
    870 Market Street
    San Francisco CA 94102
    Phone #: 415-732-7040
    800 #: 888-598-3789
    e-mail: [email protected]
    Home page: http://www.hydroassoc.org
  • MUMS (Mothers United for Moral Support, Inc) National Parent-to-Parent Network
    150 Custer Court
    Green Bay WI 54301-1243
    Phone #: 920-336-5333
    800 #: 877-336-5333
    e-mail: [email protected]
    Home page: http://www.netnet.net/mums/
  • Madisons Foundation
    PO Box 241956
    Los Angeles CA 90024
    Phone #: 310-264-0826
    800 #: N/A
    e-mail: [email protected]
    Home page: http://www.madisonsfoundation.org
  • March of Dimes Birth Defects Foundation
    1275 Mamaroneck Avenue
    White Plains NY 10605
    Phone #: 914-428-7100
    800 #: 888-663-4637
    e-mail: [email protected]
    Home page: http://www.marchofdimes.com
  • National Hydrocephalus Foundation
    12413 Centralia
    Lakewood CA 90715-1623
    Phone #: 562-924-6666
    800 #: 888-857-3434
    e-mail: [email protected]
    Home page: http://www.nhfonline.org
  • National Institute of Neurological Disorders and Stroke (NINDS)
    31 Center Drive
    Bethesda MD 20892-2540
    Phone #: 301-496-5751
    800 #: 800-352-9424
    e-mail: [email protected]
    Home page: http://www.ninds.nih.gov/
  • National Organization of Disorders of the Corpus Callosum
    PMB 363 18032-C Lemon Drive
    Yorba Linda CA 92886
    Phone #: 714-747-0063
    800 #: N/A
    e-mail: [email protected]
    Home page: http://www.nodcc.org
  • The Arc (a national organization on mental retardation)
    1010 Wayne Ave
    Silver Spring MD 20910
    Phone #: 301-565-3842
    800 #: 800-433-5255
    e-mail: [email protected]
    Home page: http://www.thearc.org/

For a Complete Report

This is an abstract of a report from the National Organization for Rare Disorders, Inc. ? (NORD). A copy of the complete report can be obtained for a small fee by visiting the NORD website. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational treatments (if available), and references from medical literature. For a full-text version of this topic, see http://www.rarediseases.org/search/rdblist.html