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NEUROLOGY 2005;65:636-638
© 2005 American Academy of Neurology
Brief Communications

Evidence of reduced frequency of spinal muscular atrophy type I in the Cuban population

T. Zaldívar, MD, Y. Montejo, MsC, A. M. Acevedo, R. Guerra, J. Vargas, MD, N. Garofalo, MD, R. Alvarez, MD, M. A. Alvarez, PhD and O. Hardiman, MD, FRCPI

From the Cuban Institute of Neurology and Neurosurgery (A.M. Acevedo, R. Guerra, and Drs. Zaldívar, Montejo, Vargas, Garofalo, and M.A. Alvarez); Havana; Paediatrics Hospital "Centro Habana" Cuba (Dr. R. Alvarez), Havana, Cuba; and Department of Neurology (Dr. Hardiman), Beaumont Hospital and Royal College of Surgeons, Dublin, Ireland.

The authors reviewed all cases of type I spinal muscular atrophy (SMA) in Cuba over a 6-year period. The incidence of SMA type I was 3.53 per 100,000 livebirths. When the population was classified according to self-reported ethnicity, the incidence was eight per 100,000 for whites; 0.89 per 100,000 for blacks, and 0.96 per 100,000 for those of mixed ethnicity. Type 1 SMA may occur less frequently in individuals of African ancestry.

Disclosure: The authors report no conflicts of interest.

Received February 7, 2005. Accepted in final form May 5, 2005.

Address correspondence and reprint request to Dr. Tatiana Zaldívar Vaillant, Neurogenetics Department, Institute of Neurology and Neurosurgery, 29 & D, Vedado, Havana City, Cuba 10400; e-mail: tzv{at}infomed.sld.cu




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