ENST00000391944.8:c.2202G>T

Variant names:

• chr19-45352197-C-A
• rs3916881
• ENST00000391944.8:c.2202G>T
• ERCC2 p.Ala734Ala

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2 BP4_Strong BP6_Moderate BP7

The ENST00000391944.8(ERCC2):​c.2202G>T​(p.Ala734Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. A734A) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ERCC2 ENST00000391944.8 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -2.82
• Publications: 0 publications found

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: Genomics England PanelApp, G2P, Illumina, Labcorp Genetics (formerly Invitae)
• xeroderma pigmentosum group D

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, G2P, Genomics England PanelApp, Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae)
• 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

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).
• BP6: Variant 19-45352197-C-A is Benign according to our data. Variant chr19-45352197-C-A is described in ClinVar as Likely_benign. ClinVar VariationId is 2753131.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=-2.82 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000391944.8. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ERCC2	NM_000400.4	MANE Select	c.2190+12G>T		intron	N/A	NP_000391.1	P18074-1
	ERCC2	NM_001440355.1		c.2118+12G>T		intron	N/A	NP_001427284.1
	ERCC2	NM_001440356.1		c.2112+12G>T		intron	N/A	NP_001427285.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ERCC2	ENST00000391944.8	TSL:1	c.2202G>T	p.Ala734Ala	synonymous	Exon 22 of 22	ENSP00000375808.4	E7EVE9
	ERCC2	ENST00000391945.10	TSL:1 MANE Select	c.2190+12G>T		intron	N/A	ENSP00000375809.4	P18074-1
	ERCC2	ENST00000891927.1		c.2286+12G>T		intron	N/A	ENSP00000561986.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	0.22
DANN	Benign	0.79
PhyloP100		-2.8

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs3916881;

hg19: chr19-45855455;