Genetic heterozygosity and pseudodeficiency in the Pompe disease newborn screening pilot program.

Abstract excerpt

Pompe disease is an autosomal recessive lysosomal storage disorder (LSD) caused by deficiency of lysosomal acid alpha-glucosidase (GAA) activity. This is the first LSD in which newborn screening has been shown to improve clinical outcomes. Newborn screening also identified multiple rare gene variants in this population. Among 132,538 newborns screened, 107 babies (1 in 1239) who had low dried blood spot GAA...

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