NM_000124.4:c.2800C>A

Variant names:

• chr10-49472938-G-T
• rs1554875536
• NM_000124.4:c.2800C>A

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PM2 PP3_Moderate PP5_Very_Strong

The NM_000124.4(ERCC6):​c.2800C>A​(p.Pro934Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: ERCC6 NM_000124.4 missense
• Clinical Significance: Likely pathogenic criteria provided, multiple submitters, no conflicts P:3
• Conservation: PhyloP100: 10.0
• Publications: 1 publications found

Genes affected

ERCC6 (HGNC:3438): (ERCC excision repair 6, chromatin remodeling factor) This gene encodes a DNA-binding protein that is important in transcription-coupled excision repair. The encoded protein has ATP-stimulated ATPase activity, interacts with several transcription and excision repair proteins, and may promote complex formation at DNA repair sites. Mutations in this gene are associated with Cockayne syndrome type B and cerebrooculofacioskeletal syndrome 1. Alternative splicing occurs between a splice site from exon 5 of this gene to the 3' splice site upstream of the open reading frame (ORF) of the adjacent gene, piggyback-derived-3 (GeneID:267004), which activates the alternative polyadenylation site downstream of the piggyback-derived-3 ORF. The resulting transcripts encode a fusion protein that shares sequence with the product of each individual gene. [provided by RefSeq, Mar 2016]

ERCC6 Gene-Disease associations (from GenCC):

• Cockayne spectrum with or without cerebrooculofacioskeletal syndrome

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• Cockayne syndrome type 2

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Myriad Women’s Health, Orphanet, Genomics England PanelApp, PanelApp Australia, Labcorp Genetics (formerly Invitae)
• UV-sensitive syndrome 1

  Inheritance: AR Classification: STRONG Submitted by: Genomics England PanelApp
• COFS syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• UV-sensitive syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• premature ovarian failure 11

  Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ENSG00000235939 (HGNC:):

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.919
• PP5: Variant 10-49472938-G-T is Pathogenic according to our data. Variant chr10-49472938-G-T is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 496904.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ERCC6	NM_000124.4	c.2800C>A	p.Pro934Thr	missense_variant	Exon 15 of 21	ENST00000355832.10	NP_000115.1
ERCC6	NM_001346440.2	c.2800C>A	p.Pro934Thr	missense_variant	Exon 15 of 21		NP_001333369.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ERCC6	ENST00000355832.10	c.2800C>A	p.Pro934Thr	missense_variant	Exon 15 of 21	1	NM_000124.4	ENSP00000348089.5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 33

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Pathogenic:1

Oct 27, 2016

Eurofins Ntd Llc (ga)

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Cockayne syndrome type 2 Pathogenic:1

-

3billion

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The variant is not observed in the gnomAD v2.1.1 dataset. In silico tool predictions suggest damaging effect of the variant on gene or gene product (REVEL: 0.75). Same nucleotide change resulting in same amino acid change has been previously reported to be associated with ERCC6 related disorder (ClinVar ID: VCV000496904 / PMID: 26749132). Therefore, this variant is classified as Likely pathogenic according to the recommendation of ACMG/AMP guideline. -

Cockayne syndrome Pathogenic:1

May 21, 2025

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: ERCC6 c.2800C>A (p.Pro934Thr) results in a non-conservative amino acid change in the encoded protein sequence. Algorithms developed to predict the effect of missense changes on protein structure and function all suggest that this variant is likely to be disruptive. The variant was absent in 251210 control chromosomes. c.2800C>A has been observed in individual(s) affected with Cockayne Syndrome and related conditions (Wilson_2016, Martin-Saavedra_2021). These data indicate that the variant is likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 34052969, 26749132). ClinVar contains an entry for this variant (Variation ID: 496904). Based on the evidence outlined above, the variant was classified as likely pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.93
BayesDel_addAF	Pathogenic	0.42	D
BayesDel_noAF	Pathogenic	0.36
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.59	D
Eigen	Uncertain	0.43
Eigen_PC	Uncertain	0.26
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.96	D
M_CAP	Pathogenic	0.29	D
MetaRNN	Pathogenic	0.92	D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Pathogenic	3.3	M
PhyloP100		10
PrimateAI	Pathogenic	0.82	D
PROVEAN	Pathogenic	-7.6	D
REVEL	Pathogenic	0.75
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.91
MutPred		0.60		Loss of stability (P = 0.1103);
MVP		0.79
MPC		0.55
ClinPred		0.99	D
GERP RS		3.9
Varity_R		0.74
gMVP		0.89
Mutation Taster		=16/84	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1554875536; hg19: chr10-50680984;