XRCC2 (X-ray repair cross complementing 2)

2018-04-01   Paul R Andreassen , Helmut Hanenberg 




XRCC2 is one of five somatic RAD51 paralogs, all of which have Walker A and B ATPase motifs. Each of the paralogs, including XRCC2, has a function in DNA double-strand break repair by homologous recombination (HR). However, their individual roles are not as well understood as that of RAD51 itself. The XRCC2 protein forms a complex (BCDX2) with three other RAD51 paralogs, RAD51B, RAD51C and RAD51D. It is believed that the BCDX2 complex mediates HR downstream of BRCA2 but upstream of RAD51, as XRCC2 is involved in the assembly of RAD51 into DNA damage foci. XRCC2 can bind DNA and, along with RAD51D, can promote homologous pairing in vitro. Consistent with its role in HR, XRCC2-deficient cells have increased levels of spontaneous chromosome instability, and exhibit hypersensitivity to DNA interstrand crosslinking agents such as mitomycin C and cisplatin as well as ionizing radiation, alkylating agents and aldehydes. XRCC2 also functions in promoting DNA replication and chromosome segregation. Biallelic mutation of XRCC2 (FANCU) causes the FA-U subtype of FA, while heterozygosity for deleterious mutations in XRCC2 may be associated with an increased breast cancer risk. XRCC2 appears to function downstream in the FA pathway, since it is not required for FANCD2 monoubiquitination, which is the central step in the FA pathway. Clinically, the only known FA-U patient in the world exhibits severe congenital abnormalities, but had not developed, by seven years of age, the bone marrow failure and cancer that are often seen in patients from other FA complementation groups.



In a screen for X-ray sensitive cellular mutants in Chinese hamster ovary (CHO) cells, the irs1 clone, which was thought to be deficient in a novel DNA repair gene, was obtained (Jones et al., 1987). Two groups subsequently mapped the region containing the defective gene to 7q36.1 in humans based on somatic cell hybrids capable of complementing the hypersensitivity of irs1 cells to the DNA interstrand crosslinking agent mitomycin C (MMC) (Jones et al., 1995; Thacker et al., 1995). The human cDNA was subsequently identified as a novel gene with considerable homology on the protein level to the RAD51 recombinase (Liu et al., 1998). The single protein coding human mRNA transcript (XRCC2-201), with a length of 3067 bp, has three coding exons (for a protein of 280 a.a.) arranged as shown below:
Atlas Image
Exon structure of the human XRCC2 gene. Exons are delineated by a vertical black line. For each exon, coding sequence is shown in grey, while non-coding sequence in exons 1 and 3 is displayed in white.


The human XRCC2 gene locus is 29.66 kb in length.


The single full-length transcript for human XRCC2 is 3,067 bp and there are no additional confirmed protein coding variants known (http://www.ensembl.org/Homo_sapiens/Gene/Summary?db=core;g=ENSG00000196584;r=7:152644779-152676165).



The five somatic mammalian RAD51 paralogs, RAD51B, RAD51C, RAD51D, XRCC2 and XRCC3, form two prominent paralog-only protein complexes. These are the RAD51B-RAD51C-RAD51D-XRCC2 ( BCDX2) and RAD51C-XRCC3 ( CX3) complexes (Liu et al., 2002; Masson et al., 2001). RAD51C, which like XRCC2 is a FA protein, is the only member of both complexes. As demonstrated using a yeast 2-hybrid assay, XRCC2 directly binds RAD51D within the BCDX2 complex (Schild et al., 2000). Further, experiments with purified proteins expressed in insect cells indicate that RAD51D bridges RAD51C and XRCC2 together (Schild et al., 2000). The RNF138 E3 ubiquitin ligase appears to regulate the interaction of RAD51D with XRCC2 by ubiquitinating RAD51D and promoting ubiquitin-mediated degradation of this RAD51 paralog (Yard et al., 2016). XRCC2 itself regulates the abundance of the BCDX2 complex, since the RAD51B, RAD51C and RAD51D proteins display decreased stability in the absence of XRCC2 (Park et al., 2016).
Other proteins, including RAD51 (Rodrigue et al., 2006) and HELQ, directly interact with the assembled BCDX2 complex (Adelman et al., 2013; Takata et al., 2013). It has also been reported that the BLM helicase interacts with the RAD51D-XRCC2 complex via direct binding to RAD51D (Braybrooke et al., 2003).
XRCC2 is essential for normal development in mice, as disruption of the Xrcc2 gene results in embryonic lethality ranging from mid-gestation to birth (Deans et al., 2000).


While each of the five somatic RAD51 paralogs in humans has a somewhat similar size as RAD51, the paralogs show relatively low homology to RAD51. Specifically, the human XRCC2 protein has a size of 34 kD while human RAD51 has a molecular mass of 37 kD; human XRCC2 is 20% identical to human RAD51 at the amino acid level (Liu et al., 1998). Still, each of the RAD51 paralogs, including XRCC2, shares Walker A and Walker B ATPase motifs with RAD51. The Walker A and Walker B motifs in human XRCC2 are present at a.a. 48-55 and 145-149, respectively (Miller et al., 2004), as shown below. No other functional domains have been identified in XRCC2.
Atlas Image
Known functional domains present in XRCC2: the Walker A and B ATPase motifs are diagramed in black.


According to the Human Protein Atlas (online), XRCC2 mRNA is expressed in cell lines representing a variety of tissue types, including the brain, skin, myeloid and lymphoid compartments, lung, breast and kidney.
The transcription factors MYC and ZNF281 bind to the XRCC2 promoter (Luoto et al., 2010; Pieraccioli et al., 2016). Further, it has been demonstrated that ZNF281 positively regulates XRCC2 expression (Pieraccioli et al., 2016). Additionally, EZH2, a subunit of the PRC2 transcriptional repressor complex, may have a role in downregulating XRCC2 expression, as increased expression of EZH2 in breast cancer cells is associated with epigenetic repression of XRCC2 and other RAD51 paralogs (Zeidler and Kleer, 2006).


Consistent with its role in DNA repair, XRCC2 is a nuclear protein (ORegan et al., 2001). When assayed by immunofluorescence microscopy and chromatin immunoprecipitation, XRCC2 localizes to engineered DNA double-strand breaks (DSBs) in nuclei (Rodrigue et al., 2006). RAD51C also colocalizes with γ-H2AX in nuclear foci induced by etoposide (Rodrigue et al., 2006). Aside of its nuclear localization, XRCC2 also localizes to centrosomes within the cytoplasm (Cappelli et al., 2011).


Each of the five somatic RAD51 paralogs, including XRCC2, is required for DNA repair by homologous recombination (HR) (Johnson et al., 1999; Takata et al., 2001). However, the role of XRCC2 and other RAD51 paralogs in promoting HR is less well understood than that of RAD51, which is the main mammalian recombinase. Still, molecular details concerning the role of XRCC2 in HR are emerging. For example, XRCC2 and other RAD51 paralogs appear to act upstream of RAD51 and regulate its assembly into nuclear foci (Chun et al., 2013; Park et al., 2016; Patel et al., 2017; Takata et al., 2001). Further, purified XRCC2 can stimulate the ATPase activity of RAD51, thereby promoting the stability of the RAD51 oligomer and enhancing RAD51-dependent strand exchange during HR (Shim et al., 2004). While it is currently unclear whether this function of XRCC2 occurs within the context of the BCDX2 complex, the presence of XRCC2 favors short-tract gene conversion over long-tract gene conversion (Nagaraju et al., 2009). Interestingly, work in Arabidopsis thaliana has demonstrated the existence of a RAD51-independent single-strand annealing (SSA) mechanism involving XRCC2, RAD51B and RAD51D (Serra et al., 2013); like HR, SSA is also a homology-dependent form of DNA repair. XRCC2 could also play a more direct role in HR than what is described above, since purified XRCC2 and RAD51D can stimulate homologous pairing of single-strand DNA with double-strand DNA in vitro (Kurumizaka et al., 2002).
Additional data suggests that XRCC2 functions in HR in the context of the previously mentioned BCDX2 protein complex. The fact that the BCDX2 complex binds Holliday junctions in vitro (Yokoyama et al., 2004) supports this possibility. BRCA2, which also regulates the assembly of RAD51 foci, appears to be epistatic with the BCDX2 complex in mediating HR (Chun et al., 2013).
The BCDX2 complex also binds to replication forks in vitro (Yokoyama et al., 2004). In support of a function in rescuing stalled or collapsed replication forks, XRCC2-deficient cells display compromised replication fork dynamics (Daboussi et al., 2008). This is consistent with the fact that HR is known to function in promoting the stability and rescue of arrested replication forks (Kolinjivadi et al., 2017).
As a mediator of HR, XRCC2 also suppresses spontaneous chromosome abnormalities including breaks, deletions and translocations (Cui et al., 1999; Takata et al., 2001). Also, related to its function in HR, XRCC2-deficient cells are hypersensitive to a variety of DNA damaging agents that directly or indirectly yield DNA double-strand breaks, including ionizing radiation, DNA interstrand crosslinking agents such as mitomycin C (MMC) and cisplatin, aldehydes, tirapazamine and temozolomide (Evans et al., 2008; Jones et al., 1987; Park et al., 2016; Roos et al., 2009; Zheng et al., 2012). Another function of XRCC2 that is potentially related to HR is in promoting accurate chromosome segregation and preventing mitotic catastrophe (Cappelli et al., 2011; Daboussi et al., 2005; Griffin et al., 2000). However, it has been reported that XRCC2 localizes to centrosomes and it is possible that polyploidy or aneuploidy observed in XRCC2-deficient cells is associated with supernumerary centrosomes rather than a DNA repair defect (Cappelli et al., 2011; Daboussi et al., 2005; Griffin et al., 2000).
Associated with its function in HR, XRCC2 also plays an essential role in promoting normal development (Deans et al., 2000). This includes a function in promoting normal lymphocyte development (Caddle et al., 2008). Also, XRCC2 promotes survival of proliferating neural precursors in vivo (Orii et al., 2006).


Based on HomoloGene (NCBI), the following are homologs of the human XRCC2 gene (NP_005422.1, 280 a.a.):
Chimpanzee (Pan troglodytes) XP_001140134.1, 280 a.a.
Rhesus monkey (Macaca mulatta) XP_001108141.1, 280 a.a.
Dog (Canis lupus familiaris) XP_532771.3, 279 a.a.
Cattle (Bos taurus) NP_001095824.1, 280 a.a.
Mouse (Mus musculus) NP_065595.2, 278 a.a.
Rat (Rattus norvegicus) NP_001102685.1, 278 a.a.
Chicken (Gallus gallus) XP_418543.3, 278 a.a.
Tropical Clawed Frog (Xenopus tropicalis) XP_002932541.2, 282 a.a.



Generally, germ-line alterations in XRCC2 are quite rare. In the largest study to date, of 13,087 breast cancer and 5,488 control cases from the UK, a total of 11 truncating and 32 rare missense variants were found (Decker et al., 2017). A recent study functionally characterized breast cancer-associated variants and found that each of the truncating or frameshift variants displayed compromised activity, while most of the missense variants tested displayed a minor change or no change in activity (Hilbers et al., 2016). Notably, a bi-allelic germ-line nonsense mutation in XRCC2 c.643C>T encoding p.R215X is causative for the U complementation group of Fanconi anemia, FA-U (Park et al., 2016; Shamseldin et al., 2012).
XRCC2 was initially published as a low-risk breast cancer susceptibility gene, similar to other late FA genes such as BRCA1, BRCA2, PALB2 and RAD51C (Park et al., 2012). However, subsequent studies could not confirm these findings and also presented data that the initial missense classification based on bioinformatic prediction tools was not correct (see below -> Breast Cancer) (Decker et al., 2017; Hilbers et al., 2012; Pelttari et al., 2015).


Increased levels of the PRC2 subunit, EZH2, leads to epigenetic repression of XRCC2 in breast cancer cells (Zeidler and Kleer, 2006). Additionally, miR-7 interacts with XRCC2 mRNA in colorectal cancer cells; overexpression of miR-7 reduces XRCC2 promoter activity (Xu et al., 2014). Interestingly, XRCC2 promoter activity seems to be highly up-regulated in nearly all types of cancers (Chen et al., 2018).

Implicated in

Entity name
Fanconi Anemia (FA)
Germ-line bi-allelic and heterozygous mutations of XRCC2 (FANCU) are associated with different outcomes. Bi-allelic inactivating mutation of XRCC2 results in the FA-U subtype, while heterozygous inheritance of pathogenic XRCC2 mutations might increase the lifetime risk of germ-line mutation carriers for developing breast cancer.
Using whole exome sequencing, bi-allelic mutations in RAD51C were found in a 2.5 year old boy born to healthy Saudi first cousins with a spectrum of severe congenital anomalies suggestive of FA. These included microcephaly, facial palsy, a lack of thumbs, short stature and an ectopic left kidney (Shamseldin et al., 2012). Importantly, bi-allelic loss-of-function mutations were detected in two other genes, MTBP and RGS3, in addition to XRCC2 (Shamseldin et al., 2012). The authors scrutinized these genes with bi-allelic mutations, since this inheritance pattern is typical of FA. XRCC2 emerged as a candidate FA gene, in part because another RAD51 paralog, RAD51C, had previously been identified as a FA gene (Vaz et al., 2010). However, as loss-of-function mutations were present in other genes, XRCC2 could not be reliably established as causative for the clinical phenotype in this initial study. A subsequent study demonstrated that XRCC2 (FANCU) is indeed the 20th FA gene based on the correction, following expression of XRCC2, of cellular phenotypes that are characteristic of FA cells (Park et al., 2016). These phenotypes included complementation of cellular hypersensitivity to MMC, correction of MMC-induced chromosome aberrations (total aberrations including breaks, gaps, radial and ring chromosomes, and number of radial chromosomes specifically), and MMC-induced cell cycle accumulation in G2-M (Park et al., 2016). However, the patient had normal blood counts and had not displayed cancer through age 7 (Park et al., 2016; Shamseldin et al., 2012).
To date, 22 FA or FA-like genes have been identified (Nepal et al., 2017). FA genes are autosomal recessive tumor suppressor genes, except for the X-linked FANCB and the autosomal dominant RAD51 (FANCR). The monoubiquitination of the FANCD2/ FANCI protein dimer is the central step in the FA pathway. FANC -A, -B, -C -E, -F, CC: TXT: -G ID: 295>, -L, -M, UBE2T (FANC-T) are early (or upstream) FA genes, since loss of function mutations in any of these genes results in defective monoubiquitination of FANCD2/I (Mamrak et al., 2017; Nepal et al., 2017). Late/downstream FA genes, which are associated with normal monoubiquitination of FANCD2 and FANCI when mutated include: BRCA2 (FANCD1), BRIP1 (FANCJ), PALB2 (FANCN), RAD51C (FANCO), RAD51 (FANCR), BRCA1 (FANCS), XRCC2 (FANCU), MAD2L2 (FANCV/polTheta) and RFWD3 (FANCW). Typical of late/downstream FA genes, FA-U cells display defective assembly of RAD51 foci in response to DNA damage (Park et al., 2016).
The vast majority of FA patients have bi-allelic mutations in the upstream FA genes, notably FANCA, FANCC and FANCG, and display clinical features characteristic of FA. These include progressive bone marrow failure around 7.6 years of age, a variety of congenital anomalies, and a predisposition to acute myeloid leukemia as well as various solid tumors that occur in the second and third decade of life (Kutler et al., 2003). Microcephaly, short stature, skin pigmentation defects, hypogonadism, and radial ray anomalies, many of which were observed in the single FA-U patient identified until present, are among the congenital anomalies that are often observed. Endocrine abnormalities are also seen in a significant number of FA patients (Rose et al., 2012).
Certain other FA complementation groups such as FA-O, defined by RAD51C (FANCO) mutations, and FA-R, defined by heterozygous dominant-negative RAD51 (FANCR) mutation, have been designated atypical FA (or FA-like) because of the absence of bone marrow failure and no increased incidences of cancer (Park et al., 2016). However, bone marrow failure and cancer are not always observed for every patient in each FA complementation group and the single FA-U patient identified so far has not reached the age at which these features are frequently observed (Kutler et al., 2003). Therefore it is not yet clear whether or not patients with germ-line bi-allelic defects in XRCC2 represent atypical FA.
Entity name
Breast Cancer
In a collaborative exome-sequencing study involving patients from the Netherlands, Spain and Australia, Park et al. identified 6 out of 1308 patients with early-onset breast cancer as having likely deleterious mutations in XRCC2, while none of the 1,120 controls carried such a mutation. Two of the six mutations were frameshift mutations (p.Arg17* and p.Cys217*) and 4 of the 6 were missense alterations with single a.a. exchanges that were predicted by three algorithms to be associated with a loss-of-function (Park et al., 2012). As the frequency at which these variants occurred in breast cancer patients, as compared to controls, was statistically significant, XRCC2 was identified by the authors as a low frequency breast cancer susceptibility gene.
However, no other study so far has confirmed mutation of XRCC2 as a significant cause of inherited breast cancer (Hilbers et al., 2016; Hilbers et al., 2012; Pelttari et al., 2015). For example, Hilbers et al. analysed the coding region of 3548 non-BRCA1/2 familial breast cancer cases and 1435 healthy controls (Hilbers et al., 2012). In the patient group, they detected only one patient with a protein truncation mutation and 20 patients with missense alterations, as compared to nine controls with missense variants. Importantly, in 2016, Hilbers et al. functionally analyzed all nonsynonymous coding variants from the two major studies published in 2012 (Hilbers et al., 2012; Park et al., 2012). Out of 24 missense alterations, only four variants had a reduced functional activity with 50-75% rescue in two out of three assays (Hilbers et al., 2016).
Finally, Decker et al. sequenced the XRCC2 coding region of 13,087 breast cancer patients and 5488 healthy controls from the UK (Decker et al., 2017). Only 13 carriers of truncating XRCC2 variants were found, nine in breast cancer patients and four in controls. There were also no statistical differences for 32 rare missense variants between the patient and control groups. Thus these authors concluded that truncating/loss-of-function mutations in XRCC2 are not associated with an increased risk of breast cancer (Decker et al., 2017), and therefore germ-line mutation of XRCC2 is not a major cause of inherited breast cancer (Decker et al., 2017; Hilbers et al., 2012).
Because XRCC2 has an important role in HR, it is likely that tumors with loss-of-function of XRCC2 may be particularly responsive to poly (ADP-ribose) polymerase (PARP) inhibitors. In support of this possibility, FA cells from the FANCU complementation group, which have biallelic mutation of XRCC2, have increased sensitivity to the PARP inhibitor olaparib, as compared to complemented cells (Park et al., 2016). Thus, identification of breast cancer patients, and perhaps other cancer patients, with deleterious somatic variants of XRCC2 may be a basis for such personalized treatments.


Pubmed IDLast YearTitleAuthors
240053292013HELQ promotes RAD51 paralogue-dependent repair to avert germ cell loss and tumorigenesis.Adelman CA et al
129753632003Functional interaction between the Bloom's syndrome helicase and the RAD51 paralog, RAD51L3 (RAD51D).Braybrooke JP et al
182120672008Homologous recombination is necessary for normal lymphocyte development.Caddle LB et al
212767912011Homologous recombination proteins are associated with centrosomes and are required for mitotic stability.Cappelli E et al
295492482018Use of the XRCC2 promoter for in vivo cancer diagnosis and therapy.Chen Y et al
231499362013Rad51 paralog complexes BCDX2 and CX3 act at different stages in the BRCA1-BRCA2-dependent homologous recombination pathway.Chun J et al
104225361999The XRCC2 and XRCC3 repair genes are required for chromosome stability in mammalian cells.Cui X et al
180896502008A homologous recombination defect affects replication-fork progression in mammalian cells.Daboussi F et al
111182022000Xrcc2 is required for genetic stability, embryonic neurogenesis and viability in mice.Deans B et al
287790022017Rare, protein-truncating variants in ATM, CHEK2 and PALB2, but not XRCC2, are associated with increased breast cancer risks.Decker B et al
181723182008Homologous recombination is the principal pathway for the repair of DNA damage induced by tirapazamine in mammalian cells.Evans JW et al
110256692000Mammalian recombination-repair genes XRCC2 and XRCC3 promote correct chromosome segregation.Griffin CS et al
272334702016Functional Analysis of Missense Variants in the Putative Breast Cancer Susceptibility Gene XRCC2.Hilbers FS et al
105176411999Mammalian XRCC2 promotes the repair of DNA double-strand breaks by homologous recombination.Johnson RD et al
31068011987Isolation and cross-sensitivity of X-ray-sensitive mutants of V79-4 hamster cells.Jones NJ et al
76076921995Assignment of the XRCC2 human DNA repair gene to chromosome 7q36 by complementation analysis.Jones NJ et al
280792552017Moonlighting at replication forks - a new life for homologous recombination proteins BRCA1, BRCA2 and RAD51.Kolinjivadi AM et al
118347242002Homologous pairing and ring and filament structure formation activities of the human Xrcc2*Rad51D complex.Kurumizaka H et al
123935162003A 20-year perspective on the International Fanconi Anemia Registry (IFAR).Kutler DI et al
96609621998XRCC2 and XRCC3, new human Rad51-family members, promote chromosome stability and protect against DNA cross-links and other damages.Liu N et al
118421132002Involvement of Rad51C in two distinct protein complexes of Rad51 paralogs in human cells.Liu N et al
209404012010Tumor cell kill by c-MYC depletion: role of MYC-regulated genes that control DNA double-strand break repair.Luoto KR et al
277607102017Recent discoveries in the molecular pathogenesis of the inherited bone marrow failure syndrome Fanconi anemia.Mamrak NE et al
117516352001Identification and purification of two distinct complexes containing the five RAD51 paralogs.Masson JY et al
147043542004Domain mapping of the Rad51 paralog protein complexes.Miller KA et al
194707542009XRCC2 and XRCC3 regulate the balance between short- and long-tract gene conversions between sister chromatids.Nagaraju G et al
291984402017Fanconi Anemia Signaling and Cancer.Nepal M et al
113013372001XRCC2 is a nuclear RAD51-like protein required for damage-dependent RAD51 focus formation without the need for ATP binding.O'Regan P et al
167779612006Selective utilization of nonhomologous end-joining and homologous recombination DNA repair pathways during nervous system development.Orii KE et al
224642512012Rare mutations in XRCC2 increase the risk of breast cancer.Park DJ et al
272082052016Complementation of hypersensitivity to DNA interstrand crosslinking agents demonstrates that XRCC2 is a Fanconi anaemia gene.Park JY et al
289121252017BLM helicase regulates DNA repair by counteracting RAD51 loading at DNA double-strand break sites.Patel DS et al
259186782015RAD51, XRCC3, and XRCC2 mutation screening in Finnish breast cancer families.Pelttari LM et al
263000062016ZNF281 contributes to the DNA damage response by controlling the expression of XRCC2 and XRCC4.Pieraccioli M et al
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188405492009Brca2/Xrcc2 dependent HR, but not NHEJ, is required for protection against O(6)-methylguanine triggered apoptosis, DSBs and chromosomal aberrations by a process leading to SCEs.Roos WP et al
107498672000Evidence for simultaneous protein interactions between human Rad51 paralogs.Schild D et al
242780372013Roles of XRCC2, RAD51B and RAD51D in RAD51-independent SSA recombination.Serra H et al
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151236512004hXRCC2 enhances ADP/ATP processing and strand exchange by hRAD51.Shim KS et al
240055652013Human DNA helicase HELQ participates in DNA interstrand crosslink tolerance with ATR and RAD51 paralogs.Takata K et al
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271618662016RNF138 interacts with RAD51D and is required for DNA interstrand crosslink repair and maintaining chromosome integrity.Yard BD et al
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Other Information

Locus ID:

NCBI: 7516
MIM: 600375
HGNC: 12829
Ensembl: ENSG00000196584


dbSNP: 7516
ClinVar: 7516
TCGA: ENSG00000196584


Gene IDTranscript IDUniprot

Expression (GTEx)



PathwaySourceExternal ID
Homologous recombinationKEGGko03440
Homologous recombinationKEGGhsa03440
DNA Double-Strand Break RepairREACTOMER-HSA-5693532
Homology Directed RepairREACTOMER-HSA-5693538
HDR through Homologous Recombination (HR) or Single Strand Annealing (SSA)REACTOMER-HSA-5693567
HDR through Homologous Recombination (HRR)REACTOMER-HSA-5685942
Homologous DNA Pairing and Strand ExchangeREACTOMER-HSA-5693579
Presynaptic phase of homologous DNA pairing and strand exchangeREACTOMER-HSA-5693616
Resolution of D-Loop StructuresREACTOMER-HSA-5693537
Resolution of D-loop Structures through Holliday Junction IntermediatesREACTOMER-HSA-5693568
Resolution of D-loop Structures through Synthesis-Dependent Strand Annealing (SDSA)REACTOMER-HSA-5693554


Pubmed IDYearTitleCitations
161952372006Polymorphisms of DNA repair genes and risk of non-small cell lung cancer.112
170187852006Commonly studied single-nucleotide polymorphisms and breast cancer: results from the Breast Cancer Association Consortium.83
120239822002Variants in DNA double-strand break repair genes and breast cancer susceptibility.74
224642512012Rare mutations in XRCC2 increase the risk of breast cancer.73
166090222006Polymorphisms in genes of nucleotide and base excision repair: risk and prognosis of colorectal cancer.71
191163882009A field synopsis on low-penetrance variants in DNA repair genes and cancer susceptibility.63
164851362006Polymorphisms in DNA double-strand break repair genes and risk of breast cancer: two population-based studies in USA and Poland, and meta-analyses.53
189907482008International Lung Cancer Consortium: pooled analysis of sequence variants in DNA repair and cell cycle pathways.48
201503662010DNA repair gene polymorphisms and risk of adult meningioma, glioma, and acoustic neuroma.46
272082052016Complementation of hypersensitivity to DNA interstrand crosslinking agents demonstrates that XRCC2 is a Fanconi anaemia gene.40


Paul R Andreassen ; Helmut Hanenberg

XRCC2 (X-ray repair cross complementing 2)

Atlas Genet Cytogenet Oncol Haematol. 2018-04-01

Online version: http://atlasgeneticsoncology.org/gene/334/xrcc2-(x-ray-repair-cross-complementing-2)