rs140522180
Variant summary
Our verdict is Pathogenic. The variant received 14 ACMG points: 14P and 0B. PM2PP3_StrongPP5_Very_Strong
The NM_000400.4(ERCC2):c.1802G>T(p.Arg601Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000558 in 1,613,290 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R601W) has been classified as Uncertain significance.
Frequency
Consequence
NM_000400.4 missense
Scores
Clinical Significance
Conservation
Publications
- cerebrooculofacioskeletal syndrome 2Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
- trichothiodystrophy 1, photosensitiveInheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Illumina, Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp
- xeroderma pigmentosum group DInheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Laboratory for Molecular Medicine, ClinGen, Labcorp Genetics (formerly Invitae), G2P
- sarcomaInheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp
- COFS syndromeInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- trichothiodystrophyInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- xeroderma pigmentosumInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- xeroderma pigmentosum-Cockayne syndrome complexInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Pathogenic. The variant received 14 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| ERCC2 | NM_000400.4 | c.1802G>T | p.Arg601Leu | missense_variant | Exon 19 of 23 | ENST00000391945.10 | NP_000391.1 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| ERCC2 | ENST00000391945.10 | c.1802G>T | p.Arg601Leu | missense_variant | Exon 19 of 23 | 1 | NM_000400.4 | ENSP00000375809.4 |
Frequencies
GnomAD3 genomes AF: 0.00000658 AC: 1AN: 152002Hom.: 0 Cov.: 30 show subpopulations
GnomAD2 exomes AF: 0.0000199 AC: 5AN: 250910 AF XY: 0.0000147 show subpopulations
GnomAD4 exome AF: 0.00000547 AC: 8AN: 1461288Hom.: 0 Cov.: 33 AF XY: 0.00000275 AC XY: 2AN XY: 726950 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00000658 AC: 1AN: 152002Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0AN XY: 74222 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Xeroderma pigmentosum Pathogenic:1
Variant summary: ERCC2 c.1802G>T (p.Arg601Leu) results in a non-conservative amino acid change located in the ATP-dependent helicase, C terminal domain (IPR006555) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 2e-05 in 250910 control chromosomes (gnomAD). c.1802G>T has been reported in the literature as a biallelic genotype in individuals affected with Xeroderma Pigmentosum (e.g. Taylor_1997, Schafer_2013, Sugaya_2021). These data indicate that the variant is likely to be associated with disease. At least two publications report experimental evidence evaluating an impact of the variant on nucletodide excision repair (NER) in fibroblasts from homozygous patients and found that it results in a reduction in NER activity to at least 70% of normal (e.g. Schafer_2013, Sugaya_2021). The following publications have been ascertained in the context of this evaluation (PMID: 23800062, 25431422, 32974964, 9238033). No submitters have cited clinical-significance assessments for this variant to ClinVar after 2014. Based on the evidence outlined above, the variant was classified as likely pathogenic. -
Xeroderma pigmentosum, group D;C1853102:Cerebrooculofacioskeletal syndrome 2;C1866504:Trichothiodystrophy 1, photosensitive Pathogenic:1
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Cerebrooculofacioskeletal syndrome 2 Pathogenic:1
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not provided Pathogenic:1
This sequence change replaces arginine, which is basic and polar, with leucine, which is neutral and non-polar, at codon 601 of the ERCC2 protein (p.Arg601Leu). This variant is present in population databases (rs140522180, gnomAD 0.01%). This missense change has been observed in individual(s) with xeroderma pigmentosum (PMID: 3341805, 9238033, 23800062, 32974964). ClinVar contains an entry for this variant (Variation ID: 2573404). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt ERCC2 protein function with a positive predictive value of 80%. Experimental studies have shown that this missense change affects ERCC2 function (PMID: 25431422, 32974964). For these reasons, this variant has been classified as Pathogenic. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at