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Mendeliome v0.7128 VWA1 Alison Yeung Marked gene: VWA1 as ready
Mendeliome v0.7128 VWA1 Alison Yeung Gene: vwa1 has been classified as Green List (High Evidence).
Mendeliome v0.7128 VWA1 Alison Yeung Classified gene: VWA1 as Green List (high evidence)
Mendeliome v0.7128 VWA1 Alison Yeung Gene: vwa1 has been classified as Green List (High Evidence).
Mendeliome v0.7127 VWA1 Melanie Marty gene: VWA1 was added
gene: VWA1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: VWA1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: VWA1 were set to 33459760; 33693694; 33559681
Phenotypes for gene: VWA1 were set to Hereditary motor neuropathy
Review for gene: VWA1 was set to GREEN
Added comment: Six different truncating variants identified in 15 affected individuals from six families (biallelic inheritance). Disease manifested in childhood or adulthood with proximal and distal muscle weakness predominantly of the lower limbs. Myopathological and neurophysiological findings were indicative of combined neurogenic and myopathic pathology. Early childhood foot deformity was frequent, but no sensory signs were observed.

An additional 17 individuals from 15 families with hereditary motor neuropathy were identified. A 10-bp repeat expansion at the end of exon 1 was observed in 14 families and was homozygous in 10 of them. This mutation, c.62_71dup [p.Gly25Argfs*74], leads to a frameshift that results in a reduction in VWA1 transcript levels via nonsense-mediated decay.
Sources: Literature