BRCA2

Breast cancer 2, early onset

PDB rendering based on 1n0w.
Available structures
PDB Ortholog search: PDBe, RCSB
Identifiers
Symbols BRCA2 ; BRCC2; BROVCA2; FACD; FAD; FAD1; FANCD; FANCD1; GLM3; PNCA2; XRCC11
External IDs OMIM: 600185 MGI: 109337 HomoloGene: 41 GeneCards: BRCA2 Gene
RNA expression pattern
More reference expression data
Orthologs
Species Human Mouse
Entrez 675 12190
Ensembl ENSG00000139618 ENSMUSG00000041147
UniProt P51587 P97929
RefSeq (mRNA) NM_000059 NM_001081001
RefSeq (protein) NP_000050 NP_001074470
Location (UCSC) Chr 13:
32.32 – 32.4 Mb		 Chr 5:
150.52 – 150.57 Mb
PubMed search
BRCA2 repeat

crystal structure of a rad51-brca2 brc repeat complex
Identifiers
Symbol BRCA2
Pfam PF00634
InterPro IPR002093
SCOP 1n0w
SUPERFAMILY 1n0w
BRCA-2 helical

structure of a brca2-dss1 complex
Identifiers
Symbol BRCA-2_helical
Pfam PF09169
InterPro IPR015252
SCOP 1iyj
SUPERFAMILY 1iyj
BRCA2, oligonucleotide/oligosaccharide-binding, domain 1

structure of a brca2-dss1 complex
Identifiers
Symbol BRCA-2_OB1
Pfam PF09103
InterPro IPR015187
SCOP 1iyj
SUPERFAMILY 1iyj
BRCA2, oligonucleotide/oligosaccharide-binding, domain 3

structure of a brca2-dss1 complex
Identifiers
Symbol BRCA-2_OB3
Pfam PF09104
InterPro IPR015188
SCOP 1iyj
SUPERFAMILY 1iyj
Tower domain

structure of a brca2-dss1 complex
Identifiers
Symbol Tower
Pfam PF09121
InterPro IPR015205
SCOP 1mje
SUPERFAMILY 1mje

BRCA2 and BRCA2 (/ˌbrækəˈtuː/[1]) are a human gene and its protein product, respectively. The official symbol (BRCA2, italic for the gene, nonitalic for the protein) and the official name (breast cancer 2) are maintained by the HGNC. One alternative symbol, FANCD1, recognizes its association with the FANC protein complex. Orthologs, styled Brca2 and Brca2, are common in other mammal species.[2] BRCA2 is a human tumor suppressor gene[3][4] (specifically, a caretaker gene), found in all humans; its protein, also called by the synonym breast cancer type 2 susceptibility protein, is responsible for repairing DNA.[5]

BRCA2 and BRCA1 are normally expressed in the cells of breast and other tissue, where they help repair damaged DNA or destroy cells if DNA cannot be repaired. They are involved in the repair of chromosomal damage with an important role in the error-free repair of DNA double strand breaks.[6][7] If BRCA1 or BRCA2 itself is damaged by a BRCA mutation, damaged DNA is not repaired properly, and this increases the risk for breast cancer.[8][9] Thus, although the terms "breast cancer susceptibility gene" and "breast cancer susceptibility protein" (used frequently both in and outside the medical literature) sound as if they describe a proto-oncogene or oncogene, BRCA1 and BRCA2 are "normal"; it is their mutation that is abnormal.

The BRCA2 gene is located on the long (q) arm of chromosome 13 at position 12.3 (13q12.3).[10] The human reference BRCA 2 gene contains 28 exons, and the cDNA has 10,254 base pairs[11] coding for a protein of 3418 amino acids.[12][13]

The gene was first cloned by scientists at Myriad Genetics, Endo Recherche, Inc., HSC Research & Development Limited Partnership, and the University of Pennsylvania.[14]

Methods to diagnose the likelihood of a patient with mutations in BRCA1 and BRCA2 getting cancer were covered by patents owned or controlled by Myriad Genetics.[15][16] Myriad's business model of exclusively offering the diagnostic test led from Myriad being a startup in 1994 to being a publicly traded company with 1200 employees and about $500M in annual revenue in 2012;[17] it also led to controversy over high prices and the inability to get second opinions from other diagnostic labs, which in turn led to the landmark Association for Molecular Pathology v. Myriad Genetics lawsuit.[18]

Function

Although the structures of the BRCA1 and BRCA2 genes are very different, at least some functions are interrelated. The proteins made by both genes are essential for repairing damaged DNA. BRCA2 binds the single strand DNA and directly interacts with the recombinase RAD51 to stimulate strand invasion a vital step of homologous recombination. The localization of RAD51 to the DNA double-strand break requires the formation of BRCA1-PALB2-BRCA2 complex. PALB2 (Partner and localizer of BRCA2)[19] can function synergistically with a BRCA2 chimera (termed piccolo, or piBRCA2) to further promote strand invasion.[20] These breaks can be caused by natural and medical radiation or other environmental exposures, but also occur when chromosomes exchange genetic material during a special type of cell division that creates sperm and eggs (meiosis). Double strand breaks are also generated during repair of DNA cross links. By repairing DNA, these proteins play a role in maintaining the stability of the human genome and prevent dangerous gene rearrangements that can lead to hematologic and other cancers.

Like BRCA1, BRCA2 probably regulates the activity of other genes and plays a critical role in embryo development.

Clinical significance

Further information: BRCA mutation

Certain variations of the BRCA2 gene increase risks for breast cancer as part of a hereditary breast-ovarian cancer syndrome. Researchers have identified hundreds of mutations in the BRCA2 gene, many of which cause an increased risk of cancer. BRCA2 mutations are usually insertions or deletions of a small number of DNA base pairs in the gene. As a result of these mutations, the protein product of the BRCA2 gene is abnormal and does not function properly. Researchers believe that the defective BRCA2 protein is unable to help fix mutations that occur in other genes. As a result, mutations build up and can cause cells to divide in an uncontrolled way and form a tumor.

People who have two mutated copies of the BRCA2 gene have one type of Fanconi anemia. This condition is caused by extremely reduced levels of the BRCA2 protein in cells, which allows the accumulation of damaged DNA. Patients with Fanconi anemia are prone to several types of leukemia (a type of blood cell cancer); solid tumors, particularly of the head, neck, skin, and reproductive organs; and bone marrow suppression (reduced blood cell production that leads to anemia). Women having inherited a defective BRCA1 or BRCA2 gene have risks for breast and ovarian cancer that are so high and seem so selective that many mutation carriers choose to have prophylactic surgery. There has been much conjecture to explain such apparently striking tissue specificity. Major determinants of where BRCA1 and BRCA2 associated hereditary cancers occur are related to tissue specificity of the cancer pathogen, the agent that causes chronic inflammation or the carcinogen. The target tissue may have receptors for the pathogen, become selectively exposed to carcinogens and an infectious process. An innate genomic deficit impairs normal responses and exacerbates the susceptibility to disease in organ targets. This theory also fits data for several tumor suppressors beyond BRCA1 or BRCA2. A major advantage of this model is that it suggests there are some options in addition to prophylactic surgery.[21]

In addition to breast cancer in men and women, mutations in BRCA2 also lead to an increased risk of ovarian, Fallopian tube, prostate, and pancreatic cancers, as well as malignant melanoma. In some studies, mutations in the central part of the gene have been associated with a higher risk of ovarian cancer and a lower risk of prostate cancer than mutations in other parts of the gene. Several other types of cancer have also been seen in certain families with BRCA2 mutations.

In general, strongly inherited gene mutations (including mutations in BRCA2) account for only 5-10% of breast cancer cases; the specific risk of getting breast or other cancer for anyone carrying a BRCA2 mutation depends on many factors.[22]

History

The BRCA2 gene was discovered in 1994 by Professor Michael Stratton along with 39 coauthor scientists[23] (Institute of Cancer Research, UK).[10][24] Scientists from several institutions, including the Wellcome Trust Sanger Institute (Hinxton, Cambs, UK) collaborated with Stratton to isolate the gene.

In honour of this discovery and collaboration, the Wellcome Trust participated in the construction of a cycle and foot path between the Addenbrooke's Hospital site in Cambridge and the nearby village of Great Shelford in 2005. The path by Cambridgeshire County Council and Sustrans is decorated with 10,257 stripes of 4 colours representing the nucleotide sequence of BRCA2 (green representing adenine, blue representing cytosine, yellow representing guanine, and red representing thymine).[25] It makes up part of National Cycle Route 11, and can be seen from trains running between Cambridge and London.
The start of the cycle path

The start of the cycle path

Germ line BRCA2 mutations and founder effect

All germ line BRCA2 mutations identified to date have been inherited, suggesting the possibility of a large “founder” effect in which a certain mutation is common to a well-defined population group and can theoretically be traced back to a common ancestor. Given the complexity of mutation screening for BRCA2, these common mutations may simplify the methods required for mutation screening in certain populations. Analysis of mutations that occur with high frequency also permits the study of their clinical expression.[26] A striking example of a founder mutation is found in Iceland, where a single BRCA2 (999del5) mutation accounts for virtually all breast/ovarian cancer families.[27][28] This frame-shift mutation leads to a highly truncated protein product. In a large study examining hundreds of cancer and control individuals, this 999del5 mutation was found in 0.6% of the general population. Of note, while 72% of patients who were found to be carriers had a moderate or strong family history of breast cancer, 28% had little or no family history of the disease. This strongly suggests the presence of modifying genes that affect the phenotypic expression of this mutation, or possibly the interaction of the BRCA2 mutation with environmental factors. Additional examples of founder mutations in BRCA2 are given in the table below.

This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries.
Population or subgroup BRCA2 mutation(s)[26][29] Reference(s)
Ashkenazi Jewish 6174delT [30]
Dutch 5579insA [31]
Finns 8555T>G, 999del5, IVS23-2A>G [32][33]
French Canadians 8765delAG, 3398delAAAAG [34][35][36]
Hungarians 9326insA [37]
Icelandics 999del5 [27][28]
Italians 8765delAG [38]
Northern Irish 6503delTT [39]
Pakistanis 3337C>T [40]
Scottish 6503delTT [39]
Slovenians IVS16-2A>G [41]
Spanish 3034delAAAC(codon936), 9254del5 [42]
Swedish 4486delG [43]

Interactions

BRCA2 has been shown to interact with

Domain architecture

BRCA2 contains a number of 39 amino acid repeats that are critical for binding to RAD51 (a key protein in DNA recombinational repair) and resistance to methyl methanesulphonate treatment.[60][67][68][76]

The BRCA2 helical domain adopts a helical structure, consisting of a four-helix cluster core (alpha 1, alpha 8, alpha 9, alpha 10) and two successive beta-hairpins (beta 1 to beta 4). An approximately 50-amino acid segment that contains four short helices (alpha 2 to alpha 4), meanders around the surface of the core structure. In BRCA2, the alpha 9 and alpha 10 helices pack with the BRCA2 OB1 domain through van der Waals contacts involving hydrophobic and aromatic residues, and also through side-chain and backbone hydrogen bonds. This domain binds the 70-amino acid DSS1 (deleted in split-hand/split foot syndrome) protein, which was originally identified as one of three genes that map to a 1.5-Mb locus deleted in an inherited developmental malformation syndrome.[74]

The BRCA OB1 domain assumes an OB fold, which consists of a highly curved five-stranded beta-sheet that closes on itself to form a beta-barrel. OB1 has a shallow groove formed by one face of the curved sheet and is demarcated by two loops, one between beta 1 and beta 2 and another between beta 4 and beta 5, which allows for weak single strand DNA binding. The domain also binds the 70-amino acid DSS1 (deleted in split-hand/split foot syndrome) protein.[74]

The BRCA OB3 domain assumes an OB fold, which consists of a highly curved five-stranded beta-sheet that closes on itself to form a beta-barrel. OB3 has a pronounced groove formed by one face of the curved sheet and is demarcated by two loops, one between beta 1 and beta 2 and another between beta 4 and beta 5, which allows for strong ssDNA binding.[74]

The Tower domain adopts a secondary structure consisting of a pair of long, antiparallel alpha-helices (the stem) that support a three-helix bundle (3HB) at their end. The 3HB contains a helix-turn-helix motif and is similar to the DNA binding domains of the bacterial site-specific recombinases, and of eukaryotic Myb and homeodomain transcription factors. The Tower domain has an important role in the tumour suppressor function of BRCA2, and is essential for appropriate binding of BRCA2 to DNA.[74]

Patents, enforcement, litigation, and controversy

A patent application for the isolated BRCA1 gene and cancer-cancer promoting mutations, as well as methods to diagnose the likelihood of getting breast cancer, was filed by the University of Utah, National Institute of Environmental Health Sciences (NIEHS) and Myriad Genetics in 1994;[15] over the next year, Myriad, in collaboration with other investigators, isolated and sequenced the BRCA2 gene and identified relevant mutations, and the first BRCA2 patent was filed in the U.S. by Myriad and the other institutions in 1995.[14] Myriad is the exclusive licensee of these patents and has enforced them in the US against clinical diagnostic labs.[18] This business model led from Myriad being a startup in 1994 to being a publicly traded company with 1200 employees and about $500M in annual revenue in 2012;[17] it also led to controversy over high prices and the inability to get second opinions from other diagnostic labs, which in turn led to the landmark Association for Molecular Pathology v. Myriad Genetics lawsuit.[18][77] The patents begin to expire in 2014.

According to an article published in the journal, Genetic Medicine, in 2010,[78] "The patent story outside the United States is more complicated.... For example, patents have been obtained but the patents are being ignored by provincial health systems in Canada. In Australia and the UK, Myriad’s licensee permitted use by health systems, but announced a change of plans in August 2008. ... Only a single mutation has been patented in Myriad’s lone European-wide patent, although some patents remain under review of an opposition proceeding. In effect, the United States is the only jurisdiction where Myriad’s strong patent position has conferred sole-provide status."[78][79] Peter Meldrum, CEO of Myriad Genetics, has acknowledged that Myriad has "other competitive advantages that may make such [patent] enforcement unnecessary" in Europe.[80]

Legal decisions surrounding the BRCA1 and BRCA2 patents will affect the field of genetic testing in general.[81] In June 2013, in Association for Molecular Pathology v. Myriad Genetics (No. 12-398), the US Supreme Court unanimously ruled that, "A naturally occurring DNA segment is a product of nature and not patent eligible merely because it has been isolated," invalidating Myriad's patents on the BRCA1 and BRCA2 genes. However, the Court also held that manipulation of a gene to create something not found in nature could still be eligible for patent protection.[82] The Federal Court of Australia came to the opposite conclusion, upholding the validity of an Australian Myriad Genetics patent over the BRCA1 gene in February 2013,[83] but this decision is being appealed and the appeal will include consideration of the US Supreme Court ruling.[84]

See also

References

  1. ↑ Hamel PJ (2007-05-29). "BRCA1 and BRCA2: No Longer the Only Troublesome Genes Out There". HealthCentral. Retrieved 2010-07-02.
  2. ↑ "OrthoMaM phylogenetic marker: BRCA2 coding sequence".
  3. ↑ Duncan JA, Reeves JR, Cooke TG (October 1998). "BRCA1 and BRCA2 proteins: roles in health and disease". Molecular pathology : MP 51 (5): 237–47. doi:10.1136/mp.51.5.237. PMC 395646. PMID 10193517.
  4. ↑ Yoshida K, Miki Y (November 2004). "Role of BRCA1 and BRCA2 as regulators of DNA repair, transcription, and cell cycle in response to DNA damage". Cancer science 95 (11): 866–71. doi:10.1111/j.1349-7006.2004.tb02195.x. PMID 15546503.
  5. ↑ Check W (2006-09-01). "BRCA: What we know now". College of American Pathologists. Retrieved 2010-08-23.
  6. ↑ Friedenson B (August 2007). "The BRCA1/2 pathway prevents hematologic cancers in addition to breast and ovarian cancers.". BMC Cancer 7: 152–162. doi:10.1186/1471-2407-7-152. PMC 1959234. PMID 17683622.
  7. ↑ Friedenson B (2008-06-08). "Breast cancer genes protect against some leukemias and lymphomas" (video). SciVee.
  8. ↑ "Breast and Ovarian Cancer Genetic Screening". Palo Alto Medical Foundation. Archived from the original on 4 October 2008. Retrieved 2008-10-11.
  9. ↑ Friedenson B (2007). "The BRCA1/2 pathway prevents hematologic cancers in addition to breast and ovarian cancers". BMC Cancer 7: 152. doi:10.1186/1471-2407-7-152. PMC 1959234. PMID 17683622.
  10. 1 2 Wooster R, Neuhausen SL, Mangion J, Quirk Y, Ford D, Collins N, Nguyen K, Seal S, Tran T, Averill D (September 1994). "Localization of a breast cancer susceptibility gene, BRCA2, to chromosome 13q12-13". Science 265 (5181): 2088–90. doi:10.1126/science.8091231. PMID 8091231.
  11. ↑ "BRCA2 breast cancer 2, early onset [Homo sapiens]". EntrezGene. National Center for Biotechnology Information, U.S. National Library of Medicine.
  12. ↑ "Breast cancer type 2 susceptibility protein - Homo sapiens (Human)". P51587. UniProt.
  13. ↑ Williams-Jones B (2002). Genetic testing for sale: Implications of commercial brca testing in Canada (Ph.D.). The University of British Columbia.
  14. 1 2 US patent 5837492, Tavtigian SV, Kamb A, Simard J, Couch F, Rommens JM, Weber BL, "Chromosome 13-linked breast cancer susceptibility gene", issued 1998-11-17, assigned to Myriad Genetics, Inc., Endo Recherche, Inc., HSC Research & Development Limited Partnership, Trustees of the University of Pennsylvania
  15. 1 2 US patent 5747282, Skolnick HS, Goldgar DE, Miki Y, Swenson J, Kamb A, Harshman KD, Shattuck-Eidens DM, Tavtigian SV, Wiseman RW, Futreal PA, "7Q-linked breast and ovarian cancer susceptibility gene", issued 1998-05-05, assigned to Myriad Genetics, Inc., The United States of America as represented by the Secretary of Health and Human Services, and University of Utah Research Foundation
  16. ↑ US patent 5837492, Tavtigian SV, Kamb A, Simard J, Couch F, Rommens JM, Weber BL, "Chromosome 13-linked breast cancer susceptibility gene", issued 1998-11-17, assigned to Myriad Genetics, Inc., Endo Recherche, Inc., HSC Research & Development Limited Partnership, Trustees of the University of Pennsylvania
  17. 1 2 Myriad Investor Page—see "Myriad at a glance" accessed October 2012
  18. 1 2 3 Schwartz J (2009-05-12). "Cancer Patients Challenge the Patenting of a Gene". Health. New York Times.
  19. 1 2 Xia B, Sheng Q, Nakanishi K, Ohashi A, Wu J, Christ N, Liu X, Jasin M, Couch FJ, Livingston DM (June 2006). "Control of BRCA2 cellular and clinical functions by a nuclear partner, PALB2". Mol. Cell 22 (6): 719–29. doi:10.1016/j.molcel.2006.05.022. PMID 16793542.
  20. ↑ Buisson R, Dion-Côté AM, Coulombe Y, Launay H, Cai H, Stasiak AZ, Stasiak A, Xia B, Masson JY (2010). "Cooperation of breast cancer proteins PALB2 and piccolo BRCA2 in stimulating homologous recombination.". Nature Structural & Molecular Biology 17 (10): 1247–54. doi:10.1038/nsmb.1915. PMID 20871615.
  21. ↑ Levin B, Lech D, Friedenson B (2012). "Evidence that BRCA1- or BRCA2-associated cancers are not inevitable". Molecular Medicine 18: 1327–37. doi:10.2119/molmed.2012.00280. PMC 3521784. PMID 22972572.
  22. ↑ "High-Penetrance Breast and/or Ovarian Cancer Susceptibility Genes". National Cancer Institute. Retrieved 7 December 2012.
  23. ↑ Strattot, M. (1995). "Identification of the breast cancer susceptibility gene BRCA2". Nature 378 (21): 789–791. doi:10.1038/378789a0. PMID 11902570.
  24. ↑ High-Impact Science: Tracking down the BRCA genes (Part 2) - Cancer Research UK science blog, 2012
  25. ↑ Route information board
  26. 1 2 Lacroix M, Leclercq G (2005). "The "portrait" of hereditary breast cancer". Breast Cancer Research and Treatment 89 (3): 297–304. doi:10.1007/s10549-004-2172-4. PMID 15754129.
  27. 1 2 Thorlacius S, Olafsdottir G, Tryggvadottir L, Neuhausen S, Jonasson JG, Tavtigian SV, Tulinius H, Ogmundsdottir HM, Eyfjörd JE (1996). "A single BRCA2 mutation in male and female breast cancer families from Iceland with varied cancer phenotypes". Nature Genetics 13 (1): 117–119. doi:10.1038/ng0596-117. PMID 8673089.
  28. 1 2 Thorlacius S, Sigurdsson S, Bjarnadottir H, Olafsdottir G, Jonasson JG, Tryggvadottir L, Tulinius H, Eyfjörd JE (1997). "Study of a single BRCA2 mutation with high carrier frequency in a small population". American Journal of Human Genetics 60 (5): 1079–1085. PMC 1712443. PMID 9150155.
  29. ↑ den Dunnen JT, Antonarakis SE (2000). "Mutation nomenclature extensions and suggestions to describe complex mutations: a discussion.". Human Mutation 15 (1): 7–12. doi:10.1002/(SICI)1098-1004(200001)15:1<7::AID-HUMU4>3.0.CO;2-N. PMID 10612815.
  30. ↑ Neuhausen S, Gilewski T, Norton L, Tran T, McGuire P, Swensen J, Hampel H, Borgen P, Brown K, Skolnick M, Shattuck-Eidens D, Jhanwar S, Goldgar D, Offit K (1996). "Recurrent BRCA2 6174delT mutations in Ashkenazi Jewish women affected by breast cancer". Nature Genetics 13 (1): 126–128. doi:10.1038/ng0596-126. PMID 8673092.
  31. ↑ Verhoog LC, van den Ouweland AM, Berns E, van Veghel-Plandsoen MM, van Staveren IL, Wagner A, Bartels CC, Tilanus-Linthorst MM, Devilee P, Seynaeve C, Halley DJ, Niermeijer MF, Klijn JG, Meijers-Heijboer H (2001). "Large regional differences in the frequency of distinct BRCA1/BRCA2 mutations in 517 Dutch breast and/or ovarian cancer families". European Journal of Cancer 37 (16): 2082–2090. doi:10.1016/S0959-8049(01)00244-1. PMID 11597388.
  32. ↑ Huusko P, Pääkkönen K, Launonen V, Pöyhönen M, Blanco G, Kauppila A, Puistola U, Kiviniemi H, Kujala M, Leisti J, Winqvist R (1998). "Evidence of founder mutations in Finnish BRCA1 and BRCA2 families". American Journal of Human Genetics 62 (6): 1544–1548. doi:10.1086/301880. PMC 1377159. PMID 9585608.
  33. ↑ Pääkkönen K, Sauramo S, Sarantaus L, Vahteristo P, Hartikainen A, Vehmanen P, Ignatius J, Ollikainen V, Kääriäinen H, Vauramo E, Nevanlinna H, Krahe R, Holli K, Kere J (2001). "Involvement of BRCA1 and BRCA2 in breast cancer in a western Finnish sub-population". Genetic Epidemiology 20 (2): 239–246. doi:10.1002/1098-2272(200102)20:2<239::AID-GEPI6>3.0.CO;2-Y. PMID 11180449.
  34. ↑ Tonin PN, Mes-Masson AM, Narod SA, Ghadirian P, Provencher D (1999). "Founder BRCA1 and BRCA2 mutations in French Canadian ovarian cancer cases unselected for family history". Clinical Genetics 55 (5): 318–324. doi:10.1034/j.1399-0004.1999.550504.x. PMID 10422801.
  35. ↑ Oros KK, Leblanc G, Arcand SL, Shen Z, Perret C, Mes-Masson AM, Foulkes WD, Ghadirian P, Provencher D, Tonin PN (2006). "Haplotype analysis suggests common founders in carriers of recurrent BRCA2 mutation, 3398delAAAAG, in French Canadian hereditary breast and/ovarian cancer families". BMC Medical Genetics 7 (23). doi:10.1186/1471-2350-7-23. PMID 16539696.
  36. ↑ Tonin PN (2006). "The limited spectrum of pathogenic BRCA1 and BRCA2 mutations in the French Canadian breast and breast-ovarian cancer families, a founder population of Quebec, Canada". Bull Cancer 93 (9): 841–846. PMID 16980226.
  37. ↑ Van Der Looij M, Szabo C, Besznyak I, Liszka G, Csokay B, Pulay T, Toth J, Devilee P, King MC, Olah E (2000). "Prevalence of founder BRCA1 and BRCA2 mutations among breast and ovarian cancer patients in Hungary". International Journal of Cancer 86 (5): 737–740. doi:10.1002/(SICI)1097-0215(20000601)86:5<737::AID-IJC21>3.0.CO;2-1. PMID 10797299.
  38. ↑ Pisano M, Cossu A, Persico I, Palmieri G, Angius A, Casu G, Palomba G, Sarobba MG, Rocca PC, Dedola MF, Olmeo N, Pasca A, Budroni M, Marras V, Pisano A, Farris A, Massarelli G, Pirastu M, Tanda F (2000). "Identification of a founder BRCA2 mutation in Sardinia". British Journal of Cancer 82 (3): 553–559. doi:10.1054/bjoc.1999.0963. PMC 2363305. PMID 10682665.
  39. 1 2 Scottish/Northern Irish BRCAI/BRCA2 Consortium (2003). "BRCA1 and BRCA2 mutations in Scotland and Northern Ireland". British Journal of Cancer 88 (8): 1256–1262. doi:10.1038/sj.bjc.6600840. PMC 2747571. PMID 12698193.
  40. ↑ Liede A, Malik IA, Aziz Z, Rios Pd Pde L, Kwan E, Narod SA (2002). "Contribution of BRCA1 and BRCA2 mutations to breast and ovarian cancer in Pakistan". American Journal of Human Genetics 71 (3): 595–606. doi:10.1086/342506. PMC 379195. PMID 12181777.
  41. ↑ Krajc M, De Grève J, Goelen G, Teugels E (2002). "BRCA2 founder mutation in Slovenian breast cancer families". European Journal of Human Genetics 10 (12): 879–882. doi:10.1038/sj.ejhg.5200886. PMID 12461697.
  42. ↑ Osorio A, Barroso A, Martínez B, Cebrián A, San Román JM, Lobo F, Robledo M, Benítez J (1998). "Molecular analysis of the BRCA2 gene in 16 breast/ovarian cancer Spanish families". Clinical Genetics 54 (7): 142–147. doi:10.1054/bjoc.1999.1089. PMC 2374482. PMID 10755399.
  43. ↑ Neuhausen SL (2000). "Founder populations and their uses for breast cancer genetics". Cancer Research 2 (2): 77–81. doi:10.1186/bcr36. PMC 139426. PMID 11250694.
  44. 1 2 3 4 5 6 Dong Y, Hakimi MA, Chen X, Kumaraswamy E, Cooch NS, Godwin AK, Shiekhattar R (November 2003). "Regulation of BRCC, a holoenzyme complex containing BRCA1 and BRCA2, by a signalosome-like subunit and its role in DNA repair". Mol. Cell 12 (5): 1087–99. doi:10.1016/S1097-2765(03)00424-6. PMID 14636569.
  45. ↑ Ryser S, Dizin E, Jefford CE, Delaval B, Gagos S, Christodoulidou A, Krause KH, Birnbaum D, Irminger-Finger I (February 2009). "Distinct roles of BARD1 isoforms in mitosis: full-length BARD1 mediates Aurora B degradation, cancer-associated BARD1beta scaffolds Aurora B and BRCA2". Cancer Res. 69 (3): 1125–34. doi:10.1158/0008-5472.CAN-08-2134. PMID 19176389.
  46. 1 2 Liu J, Yuan Y, Huan J, Shen Z (January 2001). "Inhibition of breast and brain cancer cell growth by BCCIPalpha, an evolutionarily conserved nuclear protein that interacts with BRCA2". Oncogene 20 (3): 336–45. doi:10.1038/sj.onc.1204098. PMID 11313963.
  47. 1 2 Sarkisian CJ, Master SR, Huber LJ, Ha SI, Chodosh LA (October 2001). "Analysis of murine Brca2 reveals conservation of protein-protein interactions but differences in nuclear localization signals". J. Biol. Chem. 276 (40): 37640–8. doi:10.1074/jbc.M106281200. PMID 11477095.
  48. 1 2 Chen J, Silver DP, Walpita D, Cantor SB, Gazdar AF, Tomlinson G, Couch FJ, Weber BL, Ashley T, Livingston DM, Scully R (September 1998). "Stable interaction between the products of the BRCA1 and BRCA2 tumor suppressor genes in mitotic and meiotic cells". Mol. Cell 2 (3): 317–28. doi:10.1016/S1097-2765(00)80276-2. PMID 9774970.
  49. ↑ Reuter TY, Medhurst AL, Waisfisz Q, Zhi Y, Herterich S, Hoehn H, Gross HJ, Joenje H, Hoatlin ME, Mathew CG, Huber PA (October 2003). "Yeast two-hybrid screens imply involvement of Fanconi anemia proteins in transcription regulation, cell signaling, oxidative metabolism, and cellular transport". Exp. Cell Res. 289 (2): 211–21. doi:10.1016/S0014-4827(03)00261-1. PMID 14499622.
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