Description
The p.Asn139Ser variant in GLA has been reported in at least 5 individuals with Fabry disease phenotype (PMID: 23935525, 27431810, 29982630), and has been identified in 0.038% (31/81916) of European (non-Finnish) chromosomes, including 10 hemizygotes, and 0.019% (3/16009) of European (Finnish) chromosomes, including 1 hemizygote, by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstitute.org; dbSNP rs138886989). This variant has also been reported in ClinVar as likely benign by GeneDx and Invitae and a VUS by Ambry Genetics (ID: 222253). In vitro functional studies provide some evidence that the p.Asn139Ser variant may not impact protein function (PMID: 29982630, 23935525). However, these types of assays may not accurately represent biological function. Computational prediction tools, including splice predictors, and conservation analyses suggest that this variant may not impact the protein, though this information is not predictive enough to rule out pathogenicity. One affected individual with this variant has an alternative molecular basis for disease, suggesting that p.Asn139Ser is not causative for this disease (PMID: 27431810). In summary, although additional studies are required to fully establish its clinical significance, this variant is likely benign. ACMG/AMP Criteria applied: BS1, BP4, BP5, BS3_supporting (Richards 2015).
| # | Sample | Method | Observation |
|---|
| Origin | Affected | Number tested | Tissue | Purpose | Method | Individuals | Allele frequency | Families | Co-occurrences |
|---|
| 1 | germline | unknown | not provided | not provided | not provided | | not provided | not provided | not provided | not provided |
