p.Val19Glyfs*21 and p.Leu228* variants in the survival of motor neuron 1 trigger nonsense-mediated mRNA decay causing the SMN1 PTC+ transcripts degradation.

Abstract excerpt

Spinal Muscular Atrophy (SMA) results from loss-of-function mutations in the survival of motor neuron 1 (SMN1) gene. Our previous research showed that 40% of variants were nonsense or frameshift variants and SMN1 mRNA levels in the patients carrying these variants were significantly decreased. Here we selected one rare variant (p.Val19Glyfs*21) and one common variant (p.Leu228*) to explore the degradation...

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