Article
Six unaffected livebirths following preimplantation diagnosis for spinal muscular atrophy
1 Oct 2001
Abstract excerpt
Spinal muscular atrophy (SMA) is a severe neurodegenerative autosomal recessive disorder, second only in frequency to cystic fibrosis. In its most severe form, SMA type I (Werdnig-Hoffman), death invariably ensues before age 2 years from respiratory failure or infection. Around 98% of clinical cases of SMA are caused by the homozygous absence of a region of exons 7 and 8 of the telomeric copy of the SMN gene...
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