Variants of SLC18A3 leading to congenital myasthenic syndrome in two children with varying presentations.

Abstract excerpt

This report describes the variation in presentation of two unrelated patients found to have a rare form of presynaptic congenital myasthenic syndrome. Both patients presented with hypotonia, ptosis, poor weight gain and apneic episodes. Through whole exome sequencing, our patients were found to have the same likely pathogenic biallelic variants in W315X and I200N of SLC18A3, encoding vesicular acetylcholine...

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