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Pediatr Neurol. 2006 May;34(5):372-5.

The incidence of Rett syndrome in France.

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1
University Paris 5, Cochin Institute, INSERM U567, Centre National de la Recherche Scientifique/Unitré Mixte de Reserche 8104, Paris, France. bienvenu@cochin.inserm.fr

Abstract

Since the description of Rett syndrome, only a handful of epidemiologic studies based only on clinical investigation have been reported. Mutations in the MECP2 gene are associated with Rett syndrome and French laboratories have organized a clinical and molecular network to investigate the incidence of Rett syndrome in France including the results of molecular investigations. The present study, based on a large cohort of 424 patients with Rett syndrome, found that the incidence of this disease with a MECP2 mutation varied between 0.43 to 0.71 per 10,000 females. The total population of females aged 4-15 years in November 2004 in France was estimated to be 4,337,627. The data presented here indicate a prevalence of Rett syndrome of 0.558 per 10,000 females aged 4-15 years in France. The incidence of Rett syndrome is in accordance with other European epidemiologic studies based on clinical examination. Given that this is a minimum incidence because complete inventory was not possible, this study of patients with Rett syndrome reinforces the fact that the great majority of patients with Rett syndrome have a MECP2 mutation.

[Indexed for MEDLINE]

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