Genetic Variant XRCC1:c.*50_*51insACACACACACACACACACACACACACACACACACACACACACACACACACAC (chr19-43543341-C-CGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGT) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_006297.3(XRCC1):c.*50_*51insACACACACACACACACACACACACACACACACACACACACACACACACACAC variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. It is difficult to determine the true allele frequency of this variant because it is of type INS_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 0)

Exomes 𝑓: 0.0000011 ( 0 hom. )

Consequence

XRCC1
NM_006297.3 3_prime_UTR

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.110

Publications

0 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:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006297.3. 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
	XRCC1	NM_006297.3	MANE Select	c.50_51insACACACACACACACACACACACACACACACACACACACACACACACACACAC		3_prime_UTR	Exon 17 of 17	NP_006288.2	P18887

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
XRCC1	ENST00000262887.10	TSL:1 MANE Select	c.50_51insACACACACACACACACACACACACACACACACACACACACACACACACACAC	3_prime_UTR	Exon 17 of 17	ENSP00000262887.5	P18887
XRCC1	ENST00000953258.1		c.50_51insACACACACACACACACACACACACACACACACACACACACACACACACACAC	3_prime_UTR	Exon 17 of 17	ENSP00000623317.1
XRCC1	ENST00000865401.1		c.50_51insACACACACACACACACACACACACACACACACACACACACACACACACACAC	3_prime_UTR	Exon 17 of 17	ENSP00000535460.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000110

AC:

AN:

905250

Hom.:

Cov.:

AF XY:

0.00000215

AC XY:

AN XY:

465798

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0000479

AC:

AN:

20884

American (AMR)

AF:

0.00

AC:

AN:

37628

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

20522

East Asian (EAS)

AF:

0.00

AC:

AN:

35914

South Asian (SAS)

AF:

0.00

AC:

AN:

70440

European-Finnish (FIN)

AF:

0.00

AC:

AN:

39768

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3906

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

634842

Other (OTH)

AF:

0.00

AC:

AN:

41346

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.275

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

0.11

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over