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_000330.4(RS1):c.520del (p.Arg174fs)

CA10603553

279886 (ClinVar)

Gene: RS1 (HGNC:6247)

Condition: X-linked retinoschisis (MONDO:0010725)

Inheritance Mode: X-linked inheritance (recessive (HP:0001419))

UUID: 3b0a1f6f-76c6-4f11-9191-a3d163ef9fc5

Approved on: 2025-05-19

Published on: 2025-05-20

HGVS expressions

NM_000330.4(RS1):c.520del (p.Arg174fs)

NM_000330.4:c.520del

NC_000023.11:g.18644433del

CM000685.2:g.18644433del

NC_000023.10:g.18662553del

CM000685.1:g.18662553del

NC_000023.9:g.18572474del

NG_008475.1:g.223829del

NG_008659.3:g.38017del

ENST00000379984.4:c.520del

ENST00000379984.3:c.520del

ENST00000379989.6:c.2714-1574del

ENST00000379996.7:c.2714-1574del

ENST00000476595.1:n.1011del

NM_000330.3:c.520del

NM_001037343.1:c.2714-1574del

NM_003159.2:c.2714-1574del

NM_001037343.2:c.2714-1574del

NM_003159.3:c.2714-1574del

Pathogenic

PVS1 PS4_Supporting PM2_Supporting

Evidence Links 0

Expert Panel

X-linked Inherited Retinal Disease VCEP

Criteria Specification Information

Criteria Specification: ClinGen X-linked Inherited Retinal Disease Expert Panel Specifications to the ACMG/AMP Variant Interpretation Guidelines for RS1 Version 1.0.0

Criteria Specification Approval History

Criteria Specifications for this VCEP

Evidence submitted by expert panel

X-linked Inherited Retinal Disease VCEP

The NM_000330.4(RS1):c.520del variant is a frameshift variant due to 1 nucleotide deletion introducing a premature stop codon and causing a truncated protein. This variant is absent from hemizygous individuals in gnomAD v4.1.0 (PM2_Supporting). This is a frameshift variant that introduces a premature stop codon between amino acids 1-223 that is predicted to either trigger nonsense-mediated decay or to disrupt a critical C-terminal region required for proper multimerization of RS1 (PVS1, PMID: 19849666). This variant has been reported in at least 2 apparently unrelated probands meeting the PS4 requirement of a male diagnosed with X-linked retinoschisis (PMIDs: 30551202, 17852193, PS4_Supporting). In summary, this variant is classified as pathogenic for X-linked retinoschisis based on the ClinGen X-linked Inherited Retinal Disease Expert Panel Specifications to the ACMG/AMP Variant Interpretation Guidelines for RS1 Version 1.0.0: PM2_supporting, PVS1, and PS4_supporting (date of approval 01/24/2025).

PVS1

This is a frameshift variant that introduces a premature stop codon between amino acids 1-223 that is predicted to either trigger nonsense-mediated decay or to disrupt a critical C-terminal region required for proper multimerization of RS1 (PVS1, PMID: 19849666).

PS4_Supporting

This variant has been reported in at least 2 apparently unrelated probands meeting the PS4 requirement of a male diagnosed with XLRS (PMIDs: 30551202, 17852193, PS4_Supporting).

PM2_Supporting

This variant is absent from hemizygous individuals in gnomAD v4.1.0 (PM2_Supporting).

Curation History

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