NM_000124.4(ERCC6):c.1996C>T (p.Arg666Cys) AND not provided

Germline classification:: Conflicting classifications of pathogenicity (9 submissions)
Last evaluated:: Jan 21, 2025
Review status:: criteria provided, conflicting classifications

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV000724215.41

Allele description [Variation Report for NM_000124.4(ERCC6):c.1996C>T (p.Arg666Cys)]

NM_000124.4(ERCC6):c.1996C>T (p.Arg666Cys)

Gene:

ERCC6:ERCC excision repair 6, chromatin remodeling factor [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

10q11.23

Genomic location:

Preferred name:

NM_000124.4(ERCC6):c.1996C>T (p.Arg666Cys)

HGVS:

NC_000010.11:g.49482860G>A
NG_009442.1:g.61242C>T
NM_000124.4:c.1996C>TMANE SELECT
NM_001346440.2:c.1996C>T
NP_000115.1:p.Arg666Cys
NP_001333369.1:p.Arg666Cys
LRG_465t1:c.1996C>T
LRG_465:g.61242C>T
NC_000010.10:g.50690906G>A
NM_000124.2:c.1996C>T
NM_000124.3:c.1996C>T
p.Arg666Cys

Protein change:

R666C

Links:

dbSNP: rs61760163

NCBI 1000 Genomes Browser:

rs61760163

Molecular consequence:

NM_000124.4:c.1996C>T - missense variant - [Sequence Ontology: SO:0001583]
NM_001346440.2:c.1996C>T - missense variant - [Sequence Ontology: SO:0001583]

Observations:

Condition(s)

Synonyms:: none provided; RECLASSIFIED - ADRA2C POLYMORPHISM; RECLASSIFIED - ADRB1 POLYMORPHISM
Identifiers:: MedGen: C3661900

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000224776	Eurofins Ntd Llc (ga)	criteria provided, single submitter (EGL ClinVar v180209 classification definitions)	Uncertain significance (Apr 17, 2018)	germline	clinical testing	Citation Link,
SCV000572239	GeneDx	criteria provided, single submitter (GeneDx Variant Classification Process June 2021)	Uncertain significance (Jun 11, 2024)	germline	clinical testing	Citation Link,
SCV001012455	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Likely benign (Jan 21, 2025)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV001548968	Department of Pathology and Laboratory Medicine, Sinai Health System - The Canadian Open Genetics Repository (COGR) See additional submitters Franklin by Genoox	no assertion criteria provided	Uncertain significance	unknown	clinical testing
SCV001714949	Mayo Clinic Laboratories, Mayo Clinic	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (Mar 16, 2022)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV001798593	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC) - VKGL Data-share Consensus	no assertion criteria provided	Uncertain significance	germline	clinical testing
SCV001963573	Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen - VKGL Data-share Consensus	no assertion criteria provided	Uncertain significance	germline	clinical testing
SCV001964569	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center - VKGL Data-share Consensus See additional submitters Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	no assertion criteria provided	Uncertain significance	germline	clinical testing
SCV004127663	CeGaT Center for Human Genetics Tuebingen	criteria provided, single submitter (CeGaT Center For Human Genetics Tuebingen Variant Classification Criteria Version 2)	Benign (Jan 1, 2025)	germline	clinical testing	Citation Link

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	8	not provided	not provided	not provided	not provided	clinical testing
not provided	unknown	yes	not provided	not provided	not provided	not provided	not provided	clinical testing
not provided	germline	yes	7	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group, Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9..

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.

Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL; ACMG Laboratory Quality Assurance Committee.

Genet Med. 2015 May;17(5):405-24. doi: 10.1038/gim.2015.30. Epub 2015 Mar 5.

PubMed [citation]

PMID:: 25741868
PMCID:: PMC4544753

Details of each submission

From Eurofins Ntd Llc (ga), SCV000224776.6

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	5	not provided	not provided	clinical testing	not provided

#	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		5	not provided	not provided	not provided

From GeneDx, SCV000572239.5

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

Description

Observed in individuals with colorectal or other cancer (PMID: 28051113, 28050010, 29602769); Reported previously as a likely pathogenic variant in patients with primary ovarian insufficiency (PMID: 36099812); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 29784668, 28051113, 29602769, 28050010, 30653986, 34513715, 36099812)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Labcorp Genetics (formerly Invitae), Labcorp, SCV001012455.7

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

#	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

From Department of Pathology and Laboratory Medicine, Sinai Health System - The Canadian Open Genetics Repository (COGR), SCV001548968.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

Description

The ERCC6 p.Arg666Cys variant was identified in the literature in 1 of 28 proband chromosomes (frequency: 0.036) from individuals with a positive history of cancer (proband had colon cancer) (Castellanos_2017_PMID:28051113). The variant was identified in dbSNP (ID: rs61760163), LOVD 3.0 and ClinVar (classified as likely benign by Invitae and Illumina, and as uncertain significance by Claritas Genomics, Genetic Services Laboratory University of Chicago, Fulgent Genetics, EGL Genetic Diagnostics and GeneDx). The variant was identified in control databases in 498 of 282720 chromosomes (1 homozygous) at a frequency of 0.001761 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Database March 6, 2019, v2.1.1). The variant was observed in the following populations: Latino in 103 of 35438 chromosomes (freq: 0.002906), Other in 20 of 7220 chromosomes (freq: 0.00277), European (non-Finnish) in 318 of 129064 chromosomes (freq: 0.002464), Ashkenazi Jewish in 22 of 10368 chromosomes (freq: 0.002122), African in 16 of 24964 chromosomes (freq: 0.000641), European (Finnish) in 16 of 25116 chromosomes (freq: 0.000637) and South Asian in 3 of 30614 chromosomes (freq: 0.000098), but was not observed in the East Asian population. The p.Arg666 residue is conserved in mammals but not in more distantly related organisms, and four out of five computational analyses (PolyPhen-2, SIFT, AlignGVGD, BLOSUM, MutationTaster) suggest that the variant may impact the protein; however, this information is not predictive enough to assume pathogenicity. The variant occurs outside of the splicing consensus sequence and in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer) do not predict a difference in splicing. In summary, based on the above information the clinical significance of this variant cannot be determined with certainty at this time. This variant is classified as a variant of uncertain significance.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	unknown	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Mayo Clinic Laboratories, Mayo Clinic, SCV001714949.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	3	not provided	not provided	clinical testing	PubMed (1)

#	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		3	not provided	not provided	not provided

From Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC) - VKGL Data-share Consensus, SCV001798593.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen - VKGL Data-share Consensus, SCV001963573.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center - VKGL Data-share Consensus, SCV001964569.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From CeGaT Center for Human Genetics Tuebingen, SCV004127663.13

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	7	not provided	not provided	clinical testing	not provided

Description

ERCC6: PP3, BS1, BS2

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		7	not provided	not provided	not provided

Last Updated: Apr 20, 2025

Relating variation to medicine