rs939461

Variant names:

• chr19-43564423-A-C
• rs939461
• NM_006297.3:c.145-3403T>G

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_006297.3(XRCC1):​c.145-3403T>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.103 in 152,104 control chromosomes in the GnomAD database, including 959 homozygotes. 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: 𝑓 0.10 (959 hom., cov: 32)
• Consequence: XRCC1 NM_006297.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0330
• Publications: 14 publications found

Genes affected

XRCC1 (HGNC:12828): (X-ray repair cross complementing 1) The protein encoded by this gene is involved in the efficient repair of DNA single-strand breaks formed by exposure to ionizing radiation and alkylating agents. This protein interacts with DNA ligase III, polymerase beta and poly (ADP-ribose) polymerase to participate in the base excision repair pathway. It may play a role in DNA processing during meiogenesis and recombination in germ cells. A rare microsatellite polymorphism in this gene is associated with cancer in patients of varying radiosensitivity. [provided by RefSeq, Jul 2008]

XRCC1 Gene-Disease associations (from GenCC):

• head and neck cancer

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
• spinocerebellar ataxia, autosomal recessive 26

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

ENSG00000268361 (HGNC:):

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BA1: GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.15 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
XRCC1	NM_006297.3	c.145-3403T>G		intron_variant	Intron 2 of 16	ENST00000262887.10	NP_006288.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
XRCC1	ENST00000262887.10	c.145-3403T>G		intron_variant	Intron 2 of 16	1	NM_006297.3	ENSP00000262887.5
ENSG00000268361	ENST00000594374.1	c.169-3403T>G		intron_variant	Intron 1 of 2	3		ENSP00000472698.1

Frequencies

GnomAD3 genomes AF: 0.103 AC: 15617 AN: 151988 Hom.: 955 Cov.: 32

Gnomad AFR AF: 0.117

Gnomad AMI AF: 0.00769

Gnomad AMR AF: 0.155

Gnomad ASJ AF: 0.0876

Gnomad EAS AF: 0.111

Gnomad SAS AF: 0.0472

Gnomad FIN AF: 0.115

Gnomad MID AF: 0.0981

Gnomad NFE AF: 0.0862

Gnomad OTH AF: 0.0989

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.103 AC: 15620 AN: 152104 Hom.: 959 Cov.: 32 AF XY: 0.104 AC XY: 7753 AN XY: 74338

African (AFR) AF: 0.116 AC: 4828 AN: 41498

American (AMR) AF: 0.156 AC: 2373 AN: 15254

Ashkenazi Jewish (ASJ) AF: 0.0876 AC: 304 AN: 3470

East Asian (EAS) AF: 0.111 AC: 575 AN: 5170

South Asian (SAS) AF: 0.0469 AC: 226 AN: 4822

European-Finnish (FIN) AF: 0.115 AC: 1212 AN: 10564

Middle Eastern (MID) AF: 0.0925 AC: 27 AN: 292

European-Non Finnish (NFE) AF: 0.0862 AC: 5861 AN: 68010

Other (OTH) AF: 0.0979 AC: 207 AN: 2114

Alfa AF: 0.0942 Hom.: 1299

Bravo AF: 0.109

Asia WGS AF: 0.0910 AC: 314 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	1.8
DANN	Benign	0.74
PhyloP100		-0.033
Mutation Taster		=100/0	polymorphism (auto)

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: rs939461; hg19: chr19-44068575;