Spinal muscular atrophy (SMA) is an autosomal recessive motor neuron disease caused by biallelic inactivation of the survival motor neuron 1 (SMN1) gene. With a prevalence of ~1 in 11,000… Click to show full abstract
Spinal muscular atrophy (SMA) is an autosomal recessive motor neuron disease caused by biallelic inactivation of the survival motor neuron 1 (SMN1) gene. With a prevalence of ~1 in 11,000 live births (carrier frequency of ~1:50), SMA is one of the most common severe childhood‐onset diseases; therefore, current guidelines recommend pan‐ethnic carrier screening for SMA before or during pregnancy.
               
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