Genetic Variant ERCC2:c.-519C>T (chr19-45370684-G-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The ENST00000391941.6(ERCC2):c.-519C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000146 in 684,316 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000015 ( 0 hom. )

Consequence

ERCC2
ENST00000391941.6 5_prime_UTR_premature_start_codon_gain

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.0260

Publications

36 publications found

Variant links:

Genes affected

ERCC2 (HGNC:3434): (ERCC excision repair 2, TFIIH core complex helicase subunit) The nucleotide excision repair pathway is a mechanism to repair damage to DNA. The protein encoded by this gene is involved in transcription-coupled nucleotide excision repair and is an integral member of the basal transcription factor BTF2/TFIIH complex. The gene product has ATP-dependent DNA helicase activity and belongs to the RAD3/XPD subfamily of helicases. Defects in this gene can result in three different disorders, the cancer-prone syndrome xeroderma pigmentosum complementation group D, trichothiodystrophy, and Cockayne syndrome. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2008]

ERCC2 Gene-Disease associations (from GenCC):

cerebrooculofacioskeletal syndrome 2
Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
trichothiodystrophy 1, photosensitive
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Illumina, Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp
xeroderma pigmentosum group D
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Laboratory for Molecular Medicine, ClinGen, Labcorp Genetics (formerly Invitae), G2P
sarcoma
Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp
COFS syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
trichothiodystrophy
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
xeroderma pigmentosum
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
xeroderma pigmentosum-Cockayne syndrome complex
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ERCC2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.74).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ERCC2	NM_000400.4 link	c.-144C>T		upstream_gene_variant		ENST00000391945.10	NP_000391.1	P18074-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ERCC2	ENST00000391945.10 link	c.-144C>T		upstream_gene_variant		1	NM_000400.4	ENSP00000375809.4		P18074-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000146

AC:

AN:

684316

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

357216

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

18008

American (AMR)

AF:

0.0000304

AC:

AN:

32926

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

20032

East Asian (EAS)

AF:

0.00

AC:

AN:

31946

South Asian (SAS)

AF:

0.00

AC:

AN:

64474

European-Finnish (FIN)

AF:

0.00

AC:

AN:

33012

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4126

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

445496

Other (OTH)

AF:

0.00

AC:

AN:

34296

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

651

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.74

CADD

Benign

4.4

(source)

DANN

Benign

0.88

PhyloP100

0.026

PromoterAI

0.023

Neutral

(source)

Splicing

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over