chr7-152649213-C-A

Variant names:

• chr7-152649213-C-A
• rs776959023
• NM_005431.2:c.272G>T

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_005431.2(XRCC2):​c.272G>T​(p.Arg91Leu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R91Q) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: XRCC2 NM_005431.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.41
• Publications: 3 publications found

Genes affected

XRCC2 (HGNC:12829): (X-ray repair cross complementing 2) This gene encodes a member of the RecA/Rad51-related protein family that participates in homologous recombination to maintain chromosome stability and repair DNA damage. This gene is involved in the repair of DNA double-strand breaks by homologous recombination and it functionally complements Chinese hamster irs1, a repair-deficient mutant that exhibits hypersensitivity to a number of different DNA-damaging agents. [provided by RefSeq, Jul 2008]

XRCC2 Gene-Disease associations (from GenCC):

• Fanconi anemia complementation group U

  Inheritance: AR Classification: MODERATE, LIMITED Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Ambry Genetics
• male infertility with azoospermia or oligozoospermia due to single gene mutation

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Fanconi anemia

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• premature ovarian failure 17

  Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)
• spermatogenic failure 50

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

  Inheritance: AD Classification: NO_KNOWN Submitted by: Ambry Genetics
• familial ovarian cancer

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
• hereditary breast carcinoma

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ENSG00000298894 (HGNC:):

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.977

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005431.2. 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
	XRCC2	NM_005431.2	MANE Select	c.272G>T	p.Arg91Leu	missense	Exon 3 of 3	NP_005422.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	XRCC2	ENST00000359321.2	TSL:1 MANE Select	c.272G>T	p.Arg91Leu	missense	Exon 3 of 3	ENSP00000352271.1
	XRCC2	ENST00000495707.1	TSL:1	n.294G>T		non_coding_transcript_exon	Exon 3 of 3
	XRCC2	ENST00000698506.1		c.104G>T	p.Arg35Leu	missense	Exon 2 of 2	ENSP00000513758.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Hereditary cancer-predisposing syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.88
BayesDel_addAF	Pathogenic	0.31	D
BayesDel_noAF	Pathogenic	0.20
CADD	Uncertain	26
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.51	D
Eigen	Uncertain	0.68
Eigen_PC	Uncertain	0.55
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.94	D
M_CAP	Benign	0.043	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Uncertain	-0.070	T
MutationAssessor	Pathogenic	3.6	H
PhyloP100		6.4
PrimateAI	Benign	0.41	T
PROVEAN	Pathogenic	-6.1	D
REVEL	Uncertain	0.52
Sift	Uncertain	0.0030	D
Sift4G	Uncertain	0.0070	D
Polyphen		1.0	D
Vest4		0.90
MutPred		0.87		Gain of catalytic residue at V93 (P = 0.1167)
MVP		0.54
MPC		0.29
ClinPred		0.99	D
GERP RS		5.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.73
gMVP		0.80
Mutation Taster		=26/74	disease causing

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: rs776959023; hg19: chr7-152346298; COSMIC: COSV63770109;