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Syndrome reference sheet
Generated 12 Oct 2026
Neurology · Neurology / Movement disorders (ataxias); Immunology Ataxia-telangiectasia
Also known as: A-T; Louis-Bar syndrome
Autosomal recessive progressive ataxia with telangiectasia and immunodeficiency.
- Medical specialty
- Neurology
- Subspecialty
- Neurology / Movement disorders (ataxias); Immunology
- Sex & age distribution
- Male: affected; Female: affected equally; Children: yes, onset in early childhood
- Gene(s) involved
- ATM
Etiology & mechanism
Loss of ATM kinase impairs DNA damage response.
Gene(s) involved (1)
ATM
Symptoms & signs (7)
elevated afpimmunodeficiencymalignancyoculomotor apraxiaprogressive ataxiasinopulmonary infectionstelangiectasia