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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
SyndromeScope — educational reference. Content is model-generated and not clinically verified; always confirm against OMIM, Orphanet and GeneReviews before clinical use.