Evidence Repository - Clinical Genome Resources

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

Variant: NM_000350.3(ABCA4):c.1317G>A (p.Trp439Ter)

CA226882

99043 (ClinVar)

Gene: ABCA4 (HGNC:24)

Condition: ABCA4-related retinopathy (MONDO:0800406)

Inheritance Mode: Autosomal recessive inheritance

UUID: 5ac7c81a-3537-4d63-ad82-e9d685fbb7d5

Approved on: 2026-08-25

Published on: 2026-08-25

HGVS expressions

NM_000350.3:c.1317G>A

NM_000350.3(ABCA4):c.1317G>A (p.Trp439Ter)

NC_000001.11:g.94078629C>T

CM000663.2:g.94078629C>T

NC_000001.10:g.94544185C>T

CM000663.1:g.94544185C>T

NC_000001.9:g.94316773C>T

NG_009073.1:g.47521G>A

ENST00000370225.4:c.1317G>A

ENST00000649773.1:c.1317G>A

ENST00000370225.3:c.1317G>A

NM_000350.2:c.1317G>A

Pathogenic

PVS1 PM2_Supporting PS4

Evidence Links 0

Expert Panel

ABCA4 VCEP

Criteria Specification Information

Criteria Specification: ClinGen ABCA4 Expert Panel Specifications to the ACMG/AMP Variant Interpretation Guidelines for ABCA4 Version 1.0

Criteria Specification Approval History

Criteria Specifications for this VCEP

Evidence submitted by expert panel

ABCA4 VCEP

The NM_000350.3(ABCA4):c.1317G>A; p.Trp439Ter variant in ABCA4 is a nonsense variant predicted to cause a premature stop codon in biologically relevant exon 10 of 50 leading to nonsense mediated decay in a gene in which loss-of-function is an established disease mechanism (PVS1). The total minor allele frequency in gnomAD v4.1.1 is 0.00002601 (37/1422478 alleles), which is lower than the ClinGen ABCA4 VCEP’s threshold (<0.0001) for PM2_Supporting. The prevalence of the variant in affected individuals is significantly increased compared with the prevalence in controls with an OR of 101.5 and CI of 24.08 to 923.23, which is above the ABCA4 VCEP threshold of ≥5 where the CI does not contain 1 (PS4; PMID: 35120629). In summary, this variant meets the criteria to be classified as pathogenic for ABCA4-related retinopathy based on the ACMG/AMP criteria applied, as specified by the ClinGen ABCA4 VCEP (Specification Version 1): PVS1, PS4, PM2_Supporting.

PVS1

This is a nonsense variant located in exon 10 out of 50, and introduces a premature stop codon between codons 1-2255 (PVS1)

PM2_Supporting

The total minor allele frequency in gnomAD v4.1.1 is 0.000026 (37/1422478 alleles), which is lower than the ClinGen ABCA4 VCEP’s threshold for PM2_Supporting (<0.0001), meeting this criterion (PM2_Supporting).

PS4

The prevalence of the variant in affected individuals is significantly increased compared with the prevalence in controls. The OR is 101.5 and the CI is 24.08 to 923.23, which is above the ABCA4 VCEP threshold of ≥5, where the CI does not contain 1 (PS4; PMID: 35120629).

Curation History

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