Morbidity and mortality from ataxia-telangiectasia are associated with ATM genotype.
J Allergy Clin Immunol
; 128(2): 382-9.e1, 2011 Aug.
Article
em En
| MEDLINE
| ID: mdl-21665257
ABSTRACT
BACKGROUND:
Ataxia-telangiectasia (A-T) is a rare genetic disease caused by germline biallelic mutations in the ataxia-telangiectasia mutated gene (ATM) that result in partial or complete loss of ATM expression or activity. The course of the disease is characterized by neurologic manifestations, infections, and cancers.OBJECTIVE:
We studied A-T progression and investigated whether manifestations were associated with the ATM genotype.METHODS:
We performed a retrospective cohort study in France of 240 patients with A-T born from 1954 to 2005 and analyzed ATM mutations in 184 patients, along with neurologic manifestations, infections, and cancers.RESULTS:
Among patients with A-T, the Kaplan-Meier 20-year survival rate was 53.4%; the prognosis for these patients has not changed since 1954. Life expectancy was lower among patients with mutations in ATM that caused total loss of expression or function of the gene product (null mutations) compared with that seen in patients with hypomorphic mutations because of earlier onset of cancer (mainly hematologic malignancies). Cancer (hazard ratio, 2.7; 95% CI, 1.6-4.5) and respiratory tract infections (hazard ratio, 2.3; 95% CI, 1.4-3.8) were independently associated with mortality. Cancer (hazard ratio, 5.8; 95% CI, 2.9-11.6) was a major risk factor for mortality among patients with null mutations, whereas respiratory tract infections (hazard ratio, 4.1; 95% CI, 1.8-9.1) were the leading cause of death among patients with hypomorphic mutations.CONCLUSION:
Morbidity and mortality among patients with A-T are associated with ATM genotype. This information could improve our prognostic ability and lead to adapted therapeutic strategies.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Ataxia Telangiectasia
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Proteínas Serina-Treonina Quinases
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Proteínas de Ciclo Celular
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Proteínas Supressoras de Tumor
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Proteínas de Ligação a DNA
Tipo de estudo:
Etiology_studies
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Incidence_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Adolescent
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Adult
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Child
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Child, preschool
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Female
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Humans
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Infant
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Male
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Newborn
País/Região como assunto:
Europa
Idioma:
En
Revista:
J Allergy Clin Immunol
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
França