SMA screening system using dried blood spots on filter paper: application of COP-PCR to the SMN1 deletion test.

Abstract excerpt

BACKGROUND: Spinal muscular atrophy (SMA) is a common neuromuscular disorder caused by mutations in SMN1. More than 95% of SMA patients carry homozygous SMN1 deletions. Thus, the SMN1 deletion test should be performed initially as part of the diagnostic process. However, SMN2, a highly homologous gene, hampers detection of SMN1 deletion. To differentiate between SMN1 and SMN2, many analysis methods have been...

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