chr19-43552174-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_006297.3(XRCC1):c.925C>T(p.Pro309Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000209 in 1,614,098 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (no stars).

Frequency

Genomes: 𝑓 0.0011 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

XRCC1
NM_006297.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1B:1

Conservation

PhyloP100: -0.178

Publications

8 publications found

Variant links:

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)

XRCC1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.004176408).

BP6

Variant 19-43552174-G-A is Benign according to our data. Variant chr19-43552174-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 3053358.Status of the report is no_assertion_criteria_provided, 0 stars.

BS2

High AC in GnomAd4 at 171 AD,Unknown gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
XRCC1	NM_006297.3 link	c.925C>T	p.Pro309Ser	missense_variant	Exon 9 of 17	ENST00000262887.10	NP_006288.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
XRCC1	ENST00000262887.10 link	c.925C>T	p.Pro309Ser	missense_variant	Exon 9 of 17	1	NM_006297.3	ENSP00000262887.5

Frequencies

GnomAD3 genomes

AF:

0.00107

AC:

163

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00384

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000957

GnomAD2 exomes

AF:

0.000306

AC:

AN:

251304

AF XY:

0.000221

show subpopulations

Gnomad AFR exome

AF:

0.00381

Gnomad AMR exome

AF:

0.000318

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.000489

GnomAD4 exome

AF:

0.000114

AC:

167

AN:

1461812

Hom.:

Cov.:

AF XY:

0.000106

AC XY:

AN XY:

727220

show subpopulations

African (AFR)

AF:

0.00379

AC:

127

AN:

33480

American (AMR)

AF:

0.000313

AC:

AN:

44712

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53400

Middle Eastern (MID)

AF:

0.000520

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111974

Other (OTH)

AF:

0.000331

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.477

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00112

AC:

171

AN:

152286

Hom.:

Cov.:

AF XY:

0.00124

AC XY:

AN XY:

74458

show subpopulations

African (AFR)

AF:

0.00402

AC:

167

AN:

41560

American (AMR)

AF:

0.0000653

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68004

Other (OTH)

AF:

0.000947

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000612

Hom.:

Bravo

AF:

0.00132

ESP6500AA

AF:

0.00635

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000354

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 16, 2025

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

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: XRCC1 c.925C>T (p.Pro309Ser) 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 are either unavailable or do not agree on the potential impact of this missense change. The variant allele was found at a frequency of 0.00031 in 251304 control chromosomes. This frequency is not significantly higher than estimated for a pathogenic variant in XRCC1 causing Spinocerebellar Ataxia, Autosomal Recessive 26, allowing no conclusion about variant significance. To our knowledge, no occurrence of c.925C>T in individuals affected with Spinocerebellar Ataxia, Autosomal Recessive 26 and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 3053358). Based on the evidence outlined above, the variant was classified as uncertain significance.

XRCC1-related disorder

Benign:1

Apr 24, 2023

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications).

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.073

BayesDel_addAF

Benign

-0.64

BayesDel_noAF

Benign

-0.69

CADD

Benign

(source)

DANN

Benign

0.50

DEOGEN2

Benign

0.0

.;T

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.11

LIST_S2

Benign

0.0

.;T

M_CAP

Benign

0.0036

MetaRNN

Benign

0.0042

T;T

MetaSVM

Benign

-0.91

MutationAssessor

Benign

0.0

.;.

PhyloP100

-0.18

PrimateAI

Benign

0.39

PROVEAN

Benign

-0.31

N;N

REVEL

Benign

0.018

Sift

Benign

0.40

T;T

Sift4G

Benign

0.49

T;T

Vest4

0.085

ClinPred

0.00089

GERP RS

-1.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

gMVP

0.39

Mutation Taster

=96/4

polymorphism

(source)

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over