New approaches in molecular diagnosis and population carrier screening for spinal muscular atrophy.

Abstract excerpt

Autosomal recessive spinal muscular atrophy, the leading genetic cause of infant death, is due to loss of functional SMN1 genes, mainly as a result of homozygous deletions. Carrier frequency in the general population varies widely from 1/50 to 1/125 and has significant counseling implications. In a cohort of 210 patients with spinal muscular atrophy confirmed at the molecular level, 91.9% had a homozygous...

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