The ClinGen Evidence Repository is an FDA-recognized human genetic variant database containing expert-curated assertions regarding variants' pathogenicity and supporting evidence summaries. [Disclaimer]

  • See Evidence submitted by expert panel for details.

Variant: NM_000152.5(GAA):c.2152G>A (p.Val718Ile)

CA8815626

281232 (ClinVar)

Gene: GAA
Condition: glycogen storage disease II
Inheritance Mode: Autosomal recessive inheritance
UUID: 518ff8e7-783b-46cd-a6d7-4f30e833f3d5
Approved on: 2020-05-19
Published on: 2020-06-03

HGVS expressions

NM_000152.5:c.2152G>A
NM_000152.5(GAA):c.2152G>A (p.Val718Ile)
NC_000017.11:g.80113329G>A
CM000679.2:g.80113329G>A
NC_000017.10:g.78087128G>A
CM000679.1:g.78087128G>A
NC_000017.9:g.75701723G>A
NG_009822.1:g.16774G>A
ENST00000570803.6:c.2152G>A
ENST00000572080.2:c.*290G>A
ENST00000577106.6:c.2152G>A
ENST00000302262.8:c.2152G>A
ENST00000302262.7:c.2152G>A
ENST00000390015.7:c.2152G>A
ENST00000572080.1:c.571G>A
NM_000152.3:c.2152G>A
NM_001079803.1:c.2152G>A
NM_001079804.1:c.2152G>A
NM_000152.4:c.2152G>A
NM_001079803.2:c.2152G>A
NM_001079804.2:c.2152G>A
NM_001079803.3:c.2152G>A
NM_001079804.3:c.2152G>A
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Uncertain Significance

Met criteria codes 3
BP4 PM2 BS3

Evidence Links 1

Expert Panel

Criteria Specification Information

Criteria Specifications for this VCEP
Evidence submitted by expert panel
Lysosomal Diseases VCEP
This variant, c.2152G>A (p.Val718Ile), has a highest continental population minor allele frequency in gnomAD v2.1.1 of 0.00011 in the South Asian population, meeting PM2. When expressed in COS-7 cells, this variant results in 127% GAA activity, and the protein is normally synthesized and/or processed (PMID 22644586), meeting the ClinGen LSD VCEP’s specifications for BS3. However, the finding of normal activity in in vitro assays might not truly reflect the biological activity in vivo. The score for the REVEL in silico predictor is 0.193, meeting BP4. The variant has been reported in an individual with either suspected Pompe disease or a known carrier, but further details are not available (PMID 22644586). There is a ClinVar entry for this variant (Variation ID: 281232, 1 star review status) with 3 submitters classifying the variant as likely benign and 3 submitters classifying the variant as uncertain significance. In summary, this variant meets the criteria to be classified as variant of uncertain significance for Pompe disease. ACMG/AMP criteria met, based on the specification of the ClinGen LSD VCEP: PM2, BS3, BP4.
Met criteria codes
BP4
REVEL score = 0.193, which is lower than the LSD VCEP threshold for BP4 (<0.5), and therefore meets this criterion.
PM2
The highest continental population minor allele frequency in gnomAD v2.1.1 is 0.00011 (South Asian) which is lower than the ClinGen LSD VCEP threshold (<0.001) for PM2, meeting this criterion.
BS3
This variant results in 127% GAA activity (and is normally synthesized and/or processed) when expressed in COS-7 cells, and was classified as Class F ("nonpathogenic") by Kroos et al, 2008 (PMID 18425781), meeting the ClinGen LSD VCEP criteria for BS3.

Curation History
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