The DOI matches its Crossref record; 39 of the 41 references it cites were found in a registry or an index.
Promoter Hypermethylation and BRCA1 Inactivation in Sporadic Breast and Ovarian Tumors
Abstract
BACKGROUND: Inherited mutations in the BRCA1 gene may be responsible for almost half of inherited breast carcinomas. However, somatic (acquired) mutations in BRCA1 have not been reported, despite frequent loss of heterozygosity (LOH or loss of one copy of the gene) at the BRCA1 locus and loss of BRCA1 protein in tumors. To address whether BRCA1 may be inactivated by pathways other than mutations in sporadic tumors, we analyzed the role of hypermethylation of the gene's promoter region. METHODS: Methylation patterns in the BRCA1 promoter were assessed in breast cancer cell lines, xenografts, and 215 primary breast and ovarian carcinomas by methylation-specific polymerase chain reaction (PCR). BRCA1 RNA expression was determined in cell lines and seven xenografts by reverse transcription-PCR. P values are two-sided. RESULTS: The BRCA1 promoter was found to be unmethylated in all normal tissues and cancer cell lines tested. However, BRCA1 promoter hypermethylation was present in two breast cancer xenografts, both of which had loss of the BRCA1 transcript. BRCA1 promoter hypermethylation was present in 11 (13%) of 84 unselected primary breast carcinomas. BRCA1 methylation was strikingly associated with the medullary (67% methylated; P =.0002 versus ductal) and mucinous (55% methylated; P =.0033 versus ductal) subtypes, which are overrepresented in BRCA1 families. In a second series of 66 ductal breast tumors informative for LOH, nine (20%) of 45 tumors with LOH had BRCA1 hypermethylation, while one (5%) of 21 without LOH was methylated (P =.15). In ovarian neoplasms, BRCA1 methylation was found only in tumors with LOH, four (31%) of 13 versus none of 18 without LOH (P =.02). The BRCA1 promoter was unmethylated in other tumor types. CONCLUSION: Silencing of the BRCA1 gene by promoter hypermethylation occurs in primary breast and ovarian carcinomas, especially in the presence of LOH and in specific histopathologic subgroups. These findings support a role for this tumor suppressor gene in sporadic breast and ovarian tumorigenesis.
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“Given that changes in BRCA1 promoter status contribute to sporadic tumors [64,65], mutations outside the reading frame or changes in promoter methylation status could alter FANCJ expression and contribute to tumorigenesis.”
From Hereditary Breast Cancer and the BRCA1-Associated FANCJ/BACH1/BRIP1 (2011) · cites this paper as [65]
In the citing paper
“Given that changes in BRCA1 promoter status contribute to sporadic tumors [64,65], mutations outside the reading frame or changes in promoter methylation status could alter FANCJ expression and contribute to tumorigenesis.”
From Hereditary Breast Cancer and the BRCA1-Associated FANCJ/BACH1/BRIP1 (2011) · cites this paper as [65]
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Hereditary Breast Cancer: Clinical, Pathological and Molecular Characteristics
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“BRCA1 loss of expression also occurs commonly in sporadic breast cancers, secondary to epigenetic changes, and is often observed in triple-negative or basallike tumors.(80,87-94) As a consequence, loss of BRCA1 protein function may also be a critical driver in both sporadic and familial breast cancers.”
BackgroundMethylation profiles of sporadic ovarian tumors and nonmalignant ovaries from high-risk women.
Rathi, A., Virmani, A. K., Schorge, J. O., Elias, K. J., Maruyama, R., Minna, J. D., Mok, S. C., Girard, L., Fishman, D. A., & Gazdar, A. F. (2002) · PubMed · Cited by 118
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Targeted Therapeutic Strategies for Triple-Negative Breast Cancer
Li, Y., Zhan, Z., Yin, X., Fu, S., & Deng, X. (2021) · Frontiers in Oncology · doi:10.3389/fonc.2021.731535 · Cited by 118
“Tumor suppressor genes, such as BRCA1, could be inhibited in tumors by promoter hypermethylation, which may be an important mechanism of primary breast cancer progression (87, 88).”
BackgroundBRCA1 methylation: a significant role in tumour development?
Catteau, A., & Morris, J. R. (2002) · Seminars in Cancer Biology · doi:10.1016/s1044-579x(02)00056-1 · Cited by 121
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“The DNA regions studied were promoters (BRCA1, CD44, ESR1, GSTM2, GSTP1, MAGEA1, MSI1, NFE2L3, RASSF1A, RUNX3, SIX3 and TFF1), far-upstream regions (EN1, PAX3, PITX2, and SGK1), introns (APC, EGFR, LHX2, RFX1 and SOX9) and the LINE-1 and satellite 2 DNA repeats.”
InfluentialTargeting homologous recombination repair defects in cancer
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“BRCA1 methylation has also been found to be more strongly associated with the uncommon ( 5%) medullary and mucinous subtypes of breast cancer (27), which some studies report are more frequent in AA cancers (30).”
BackgroundNon-coding RNAs, epigenetics, and cancer: tying it all together
Ferreira, H. J., & Esteller, M. (2018) · Cancer and Metastasis Reviews · doi:10.1007/s10555-017-9715-8 · Cited by 116
Self-citationNOTCH1 activation compensates BRCA1 deficiency and promotes triple-negative breast cancer formation
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Characteristic promoter hypermethylation signatures in male germ cell tumors.
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“Nevertheless, our findings do mirror earlier preclinical studies using breast cancer models, which similar to our study did not find BRCA1/2 methylation in a panel of 21 established breast cancer cell lines (35).”
ResultWang, C.-J., Horiuchi, A., Imai, T., Ohira, S., Itoh, K., Nikaido, T., Katsuyama, Y., & Konishi, I. (2004) · The Journal of Pathology · doi:10.1002/path.1507 · Cited by 112
“Since there is a consensus that somatic mutation of BRCA1 is extremely rare in sporadic ovarian carcinomas [5–7], silencing of gene expression is considered to be due to the combination of allelic loss with methylation or by biallelic methylation [12,14].”
BackgroundMethodHypermethylation in Histologically Distinct Classes of Breast Cancer
Bae, Y. K., Brown, A. L., Garrett, E., Bornman, D. M., Fackler, M. J., Sukumar, S. V., Herman, J. G., & Gabrielson, E. W. (2004) · Clinical Cancer Research · doi:10.1158/1078-0432.ccr-04-0667 · Cited by 112
“This finding corroborates previous observations of high frequencies of BRCA1 methylation in mucinous cancers made with a smaller number of cases (2), and collectively, these data suggest that BRCA1 methylation is characteristic of mucinous breast cancer.”
ResultMirza, S., Sharma, G., Prasad, C. P., Parshad, R., Srivastava, A., Gupta, S. D., & Ralhan, R. (2007) · Life Sciences · doi:10.1016/j.lfs.2007.05.012 · Cited by 113
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“In a fraction of these tumors, this low BRCA1 expression could be due to aberrant methylation of the promoter, which has been reported to occur in 11% to 14% of breast cancer cases (31, 46, 47).”
BackgroundWillers, H., Taghian, A. G., Luo, C., Treszezamsky, A. D., Sgroi, D. C., & Powell, S. N. (2009) · Molecular Cancer Research · doi:10.1158/1541-7786.mcr-09-0149 · Cited by 110
“13), but reduced BRCA1 expression has been reported in a subset of these cancers, particularly in patients with triple-negative tumors (14-17).”
BackgroundHereditary Breast Cancer and the BRCA1-Associated FANCJ/BACH1/BRIP1
Cantor, S. B., & Guillemette, S. (2011) · Future Oncology · doi:10.2217/fon.10.191 · Cited by 106
“Given that changes in BRCA1 promoter status contribute to sporadic tumors [64,65], mutations outside the reading frame or changes in promoter methylation status could alter FANCJ expression and contribute to tumorigenesis.”
The translational challenges of precision oncology
Pich, O., Bailey, C., Watkins, T. B. K., Zaccaria, S., Jamal‐Hanjani, M., & Swanton, C. (2022) · Cancer Cell · doi:10.1016/j.ccell.2022.04.002 · Cited by 116
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“The same buffer used for the multiplex PCR was used for all MS-PCR reactions.(34) CpGenome - Universal Methylated DNA (Intergen Company, Purchase, NY) was used as the methylated control after NaHSO3 conversion.”
MethodEpigenetic regulation of DNA repair genes and implications for tumor therapy
Christmann, M., & Kaina, B. (2017) · Mutation Research/Reviews in Mutation Research · doi:10.1016/j.mrrev.2017.10.001 · Cited by 110
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“Promoter methylation leads to decreased expression of BRCA1, MLH1, and FANCF protein in a subset of ovarian carcinomas [18-23].”
MethodEpigenetic mechanisms and the hallmarks of cancer: an intimate affair.
Darwiche, N. (2020) · PubMed Central · Cited by 105
Goldberg, M. S., Xing, D., Ren, Y., Oršulić, S., Bhatia, S. N., & Sharp, P. A. (2010) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1016538108 · Cited by 107
“Though not detected in normal tissue, aberrant methylation of the BRCA1 promoter and silencing of expression are found in 11– 14% of breast cancers and 5–31% of ovarian cancers (6, 27).”
BackgroundAberrant Promoter Methylation in Human DAB2 Interactive Protein ( hDAB2IP ) Gene in Breast Cancer
Dote, H., Toyooka, S., Tsukuda, K., Yano, M., Ouchida, M., Doihara, H., Suzuki, M., Chen, H., Hsieh, J., Gazdar, A. F., et al. (2004) · Clinical Cancer Research · doi:10.1158/1078-0432.ccr-03-0236 · Cited by 106
Estrogens, BRCA1, and breast cancer.
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Epigenetic Modifications in Breast Cancer and Their Role in Personalized Medicine
Stefánsson, Ó. A., & Esteller, M. (2013) · American Journal Of Pathology · doi:10.1016/j.ajpath.2013.04.033 · Cited by 111
“In these cases, the second hit is thought to be acquired genomic deletions of the wild-type and unmethylated allele.(14,57) With respect to the phenotype, it has been demonstrated that primary breast cancer cells with BRCA1 gene defects, caused by either inherited mutations or acquired promoter methylation, tend to be…”
Self-citationMolecular Pathways: Targeting PARP in Cancer Treatment
Do, K. T., & Chen, A. P. (2012) · Clinical Cancer Research · doi:10.1158/1078-0432.ccr-12-0163 · Cited by 111
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DNA hypermethylation in breast cancer and its association with clinicopathological features
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Overview of Cancer Epigenetics
Jones, P. A. (2005) · Seminars in Hematology · doi:10.1053/j.seminhematol.2005.05.001 · Cited by 105
Endoplasmic Reticulum Stress, Genome Damage, and Cancer
Dicks, N., Gutierrez, K., Michalak, M., Bordignon, V., & Agellon, L. B. (2015) · Frontiers in Oncology · doi:10.3389/fonc.2015.00011 · Cited by 106
Ataxia-Telangiectasia-Mutated ( ATM ) Gene in Head and Neck Squamous Cell Carcinoma
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The role of aberrant DNA methylation in cancer initiation and clinical impacts
Geissler, F., Nesic, K., Kondrashova, O., Dobrovic, A., Swisher, E. M., Scott, C. L., & Wakefield, M. J. (2024) · Therapeutic Advances in Medical Oncology · doi:10.1177/17588359231220511 · Cited by 112
“122 In cancer, tumour suppressor epimutations appear to rely on methylation of a single allele followed by inactivation of the wild-type allele, consistent with Knudson’s two-hit model of tumour formation for tumour suppressor mutations 123,124 (Figure 2).”
BackgroundMYC Is Amplified in BRCA1 -Associated Breast Cancers
Grushko, T. A., Dignam, J. J., Das, S., Blackwood, A. M., Perou, C. M., Ridderstråle, K., Anderson, K. N., Wei, M.-J., Adams, A. J., Hagos, F., et al. (2004) · Clinical Cancer Research · doi:10.1158/1078-0432.ccr-0976-03 · Cited by 103
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“Methylation process may cause a downregulation of the protein leading to gene dysfunction [5–12].”
BackgroundResultSiRNA and epigenetic aberrations in ovarian cancer
Mirzaei, H., Yazdi, F., Salehi, R., & Mirzaei, H. R. (2016) · Journal of Cancer Research and Therapeutics · doi:10.4103/0973-1482.153661 · Cited by 101
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“Instead, studies have linked inactivation of BRCA1 by promoter hypermethylation as a common event in sporadic breast and ovarian cancer [49, 50].”
BackgroundInfluentialA tumor suppressor role for C/EBPα in solid tumors: more than fat and blood
Lourenço, A. R., & Coffer, P. J. (2017) · Oncogene · doi:10.1038/onc.2017.151 · Cited by 101
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“However, a loss of function of BRCA genes has been evidenced in sporadic BCs due to epigenetic mechanisms such as hypermethylation in their promoter region.(99,100) Of note, BRCA deficiency can impair the capacity of cancer cells to repair DNA crosslinks caused by chemotherapy such as platinium-derivatives.”
BackgroundSubtypes of familial breast tumours revealed by expression and copy number profiling
kConFab Investigators, Waddell, N., Arnold, J., Cocciardi, S., da Silva, L., Marsh, A., Riley, J., Johnstone, C. N., Orloff, M., Assie, G., et al. (2010) · Breast Cancer Research and Treatment · doi:10.1007/s10549-009-0653-1 · Cited by 99
“Methylation of the BRCA1 promoter has been reported in up to onethird of breast tumours [12, 13, 16, 27, 90], but methylation of BRCA1 is not necessarily associated with tumour subtype [55].”
BackgroundMoutinho, C., Martínez‐Cardús, A., Santos, C., Navarro-Perez, V., Martinez‐Balibrea, E., Musulén, E., Carmona, F. J., Bianchi, A. S., Cassingena, A., Siena, S., et al. (2013) · JNCI Journal of the National Cancer Institute · doi:10.1093/jnci/djt322 · Cited by 103
Self-citationDormant hypermethylated tumour suppressor genes: questions and answers
Esteller, M. (2005) · The Journal of Pathology · doi:10.1002/path.1707 · Cited by 97
“Finally, in the case of BRCA1, its hypermethylation-associated inactivation [25] produces the same profound disruption of expression profiles as do the BRCA1 germline mutations [26].”
BackgroundSelf-citationHeterogenic Loss of the Wild-Type BRCA Allele in Human Breast Tumorigenesis
King, T. A., Li, W., Brogi, E., Yee, C. J., Gemignani, M. L., Olvera, N., Levine, D. A., Norton, L., Robson, M. E., Offit, K., et al. (2007) · Annals of Surgical Oncology · doi:10.1245/s10434-007-9372-1 · Cited by 99
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“For example, the VHL gene is inactivated by hypermethylation in a subset of clear cell renal cancers (2), p16 hypermethylation associated with loss of expression is a common feature of many solid tumor types (3, 4), the mismatch repair gene hMLH1 can also be inactivated by hypermethylation (5) and BRCA1 hypermethylati…”
BackgroundInfluentialMicroRNA epigenetic alterations in human cancer: One step forward in diagnosis and treatment
Yang, N., Coukos, G., & Zhang, L. (2007) · International Journal of Cancer · doi:10.1002/ijc.23325 · Cited by 96
Dagdemir, A., Durif, J., Ngollo, M., Bignon, Y., & Bernard-Gallon, D. J. (2013) · Epigenomics · doi:10.2217/epi.12.74 · Cited by 97
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“Among the 33 high grade serous carcinomas, 9 cases carry mutations in BRCA1 (8 germline and 1 somatic), 3 have mutations in BRCA2 (2 germline and 1 somatic), 10 show BRCA1 epigenetic loss (promoter methylation and decreased expression), while 11 cases show no demonstrable BRCA1 or BRCA2 loss (no mutation in BRCA1/BRCA…”
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DNA Damage, DNA Repair and Cancer
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Hartsough, M. T., Clare, S. E., Mair, M., ELKAHLOUN, A. G., Sgroi, D. C., Osborne, C. K., Clark, G. M., & Steeg, P. S. (2001) · PubMed · Cited by 93
BRCA1 Interaction with Human Papillomavirus Oncoproteins
Zhang, Y., Fan, S., Meng, Q., Ma, Y., Katiyar, P., Schlegel, R., & Rosen, E. M. (2005) · Journal of Biological Chemistry · doi:10.1074/jbc.m505124200 · Cited by 93
BRCAness: Finding the Achilles Heel in Ovarian Cancer
Rigakos, G., & Razis, E. D. (2012) · The Oncologist · doi:10.1634/theoncologist.2012-0028 · Cited by 93
“The BRCA1 promoter aberrant methylation in cytosine residues of CpG dinucleotides has been shown to lead to decreased BRCA1 expression in 5%– 30% of ovarian tumors, resulting in BRCAness [13–15, 23].”
BackgroundEpigenetic Inactivation of TMS1/ASC in Ovarian Cancer
Terasawa, K., Sagae, S., Toyota, M., Tsukada, K., Ogi, K., Satoh, A., Mita, H., Imai, K., Tokino, T., & Kudo, R. (2004) · Clinical Cancer Research · doi:10.1158/1078-0432.ccr-0932-03 · Cited by 92
“In ovarian cancer, aberrant methylation of such cancer-associated genes as p16INK4A (11), RASSFIA (12), BRCA1 (13), and hMLH1 (14) has been reported.”
BackgroundEmergence of the Noncoding Cancer Genome: A Target of Genetic and Epigenetic Alterations
Zhou, S., Treloar, A. E., & Lupien, M. (2016) · Cancer Discovery · doi:10.1158/2159-8290.cd-16-0745 · Cited by 89
Meng, X., Duan, C., Pang, H., Chen, Q., Han, B. R., Zha, C., Dinislam, M., Wu, P., Li, Z., Zhao, S., et al. (2019) · EBioMedicine · doi:10.1016/j.ebiom.2019.01.067 · Cited by 93
“, FANCF, BRCA1) throughmethylation of the promoter region could down-regulate their expression levels [56-58].”
BackgroundZiogas, D. E., & Roukos, D. H. (2009) · Annals of Surgical Oncology · doi:10.1245/s10434-009-0436-2 · Cited by 92
“Hypermethylation of the CpG island was a mechanism of inactivation of the tumor-suppressor gene RCA1.”
BackgroundInfluentialPampalakis, G., Prosnikli, E., Agalioti, T., Vlahou, A., Zoumpourlis, V. C., & Sotiropoulou, G. (2009) · Cancer Research · doi:10.1158/0008-5472.can-08-1976 · Cited by 90
Xu, Y., Diao, L., Chen, Y., Liu, Y., Wang, C. Y., Ouyang, T., Li, J., Wang, T., Fan, Z., Fan, T., et al. (2013) · Annals of Oncology · doi:10.1093/annonc/mdt011 · Cited by 89
“The primers for detection of the methylated BRCA1 CpG islands were 50-tcgtggtaacggaaaagcgc-30 (sense) and 50aaatctcaacgaactcacgccg-30 (antisense) [13].”
BackgroundEpigenetics in Cancer: A Hematological Perspective
Stahl, M. F., Kohrman, N., Gore, S. D., Kim, T. K., Zeidan, A. M., & Prébet, T. (2016) · PLoS Genetics · doi:10.1371/journal.pgen.1006193 · Cited by 92
Nesic, K., Kondrashova, O., Hurley, R. M., McGehee, C. D., Vandenberg, C. J., Ho, G., Lieschke, E., Dall, G., Bound, N. T., Shield‐Artin, K., et al. (2021) · Cancer Research · doi:10.1158/0008-5472.can-21-0774 · Cited by 90
“Biallelic inactivation of BRCA1 achieved by methylation of one allele and somatic loss of the other is an accepted mechanism of functional BRCA1 loss in BRCA1 methylated breast and ovarian tumors (38), and our data now support the relevance of this mechanism for meRAD51C.”
Altered expression of the septin gene, SEPT9 , in ovarian neoplasia
Burrows, J. F., Chanduloy, S., McIlhatton, M. A., Nagar, H., Yeates, K., Donaghy, P. G., Price, J., Godwin, A. K., Johnston, P. G., & Russell, S. H. (2003) · The Journal of Pathology · doi:10.1002/path.1484 · Cited by 90
“Our observation of a beta/zeta transcript switch in tumours and the increasing evidence of a role for epigenetic mechanisms in tumourigenesis [14] prompted us to investigate the possibility that methylation may be involved in the transcriptional regulation of SEPT9 splice variants.”
BackgroundEpigenetic Silencing of the Tumor Suppressor Cystatin M Occurs during Breast Cancer Progression
Ai, L., Kim, W.-J., Kim, T., Fields, C. R., Massoll, N. A., Robertson, K. D., & Brown, K. D. (2006) · Cancer Research · doi:10.1158/0008-5472.can-06-0576 · Cited by 90
Basal-like Breast Carcinoma: From Expression Profiling to Routine Practice
Rakha, E. A., & Reis-Filho, J. S. (2009) · Archives of Pathology & Laboratory Medicine · doi:10.5858/133.6.860 · Cited by 90
Lewandowska, J., & Bartoszek, A. (2011) · Mutagenesis · doi:10.1093/mutage/ger019 · Cited by 93
Liu, C., Srihari, S., Cao, K. L., Chenevix‐Trench, G., Simpson, P. T., Ragan, M. A., & Khanna, K. K. (2014) · Nucleic Acids Research · doi:10.1093/nar/gku284 · Cited by 91
Mukherjee, S., Dasgupta, S., Mishra, P. K., & Chaudhury, K. (2021) · Environmental Science and Pollution Research · doi:10.1007/s11356-021-16056-x · Cited by 96
“BRCA1 hypermethylation is common in breast and ovarian cancers (Esteller et al. 2000).”
BackgroundEpigenetics of Cancer Progression
Vucic, E. A., Brown, C. J., & Lam, W. L. (2008) · Pharmacogenomics · doi:10.2217/14622416.9.2.215 · Cited by 89
Tumor Markers and Their Diagnostic Significance in Ovarian Cancer
Matsas, A., Stefanoudakis, D., Troupis, T. G., Kontzoglou, K., Eleftheriades, M. I., Christopoulos, P., Panoskaltsis, T., Stamoula, Ε., & Iliopoulos, D. (2023) · Life · doi:10.3390/life13081689 · Cited by 88
“The occurrence of promoter hypermethylation escalates as the disease progresses [102,103].”
BackgroundEpigenetic regulation in cancer therapy: From mechanisms to clinical advances
Tao, L., Zhou, Y., Luo, Y., Qiu, J., Xiao, Y., Zou, J., Zhang, Y., Liu, X., Yang, X., Gou, K., et al. (2024) · MedComm – Oncology · doi:10.1002/mog2.59 · Cited by 95
Epigenetic alterations in gastric carcinogenesis
Choi, I., & Wu, T. (2005) · Cell Research · doi:10.1038/sj.cr.7290293 · Cited by 88
The Fanconi anemia (FA) pathway confers glioma resistance to DNA alkylating agents
Chen, C. C., Taniguchi, T., & D’Andrea, A. D. (2007) · Journal of Molecular Medicine · doi:10.1007/s00109-006-0153-2 · Cited by 87
“To date, the correlation between TMZ/BCNU resistance and cellular repair/damage response pathways (MGMT, MMR, base excision repair, CHK1) remains imperfect and variable between studies [46, 49, 52, 61, 62].”
BackgroundEpigenetic biomarkers in epithelial ovarian cancer
Gloss, B., & Samimi, G. (2012) · Cancer Letters · doi:10.1016/j.canlet.2011.12.036 · Cited by 86
Association of BRCA1 promoter methylation with sporadic breast cancers: Evidence from 40 studies
Zhang, L., & Long, X. (2015) · Scientific Reports · doi:10.1038/srep17869 · Cited by 90
BRCA1 in hormonal carcinogenesis: basic and clinical research
Rosen, E. M., Fan, S., & Isaacs, C. J. (2005) · Endocrine Related Cancer · doi:10.1677/erc.1.00972 · Cited by 86
“Decreased BRCA1 expression may be due to hypermethylation of the BRCA1 promoter on CpG islands and/or loss of one of the BRCA1 alleles (Rice et al. 1998, Esteller et al. 2000, Staff et al. 2003).”
Aberrant methylation of TMS1 in small cell, non small cell lung cancer and breast cancer
Virmani, A. K., Rathi, A., Sugio, K., Sathyanarayana, U. G., Toyooka, S., Kischel, F. C., Tonk, V. S., Padar, A., Takahashi, T., Roth, J. A., et al. (2003) · International Journal of Cancer · doi:10.1002/ijc.11206 · Cited by 86
The Third-Generation Sequencing Challenge: Novel Insights for the Omic Sciences
Scarano, C., Veneruso, I., Simone, R. R. D., Bonito, G. D., Secondino, A., & D’Argenio, V. (2024) · Biomolecules · doi:10.3390/biom14050568 · Cited by 90
“Promoter hypermethylation, instead, causes the silencing of many tumor-suppressor genes and is another mechanism involved in carcinogenesis [66].”
BackgroundBRCA1 mutations drive oxidative stress and glycolysis in the tumor microenvironment
Martinez‐Outschoorn, U., Balliet, R. M., Lin, Z., Whitaker‐Menezes, D., Birbe, R., Bombonati, A., Pavlides, S., Lamb, R., Sneddon, S., Howell, A., et al. (2012) · Cell Cycle · doi:10.4161/cc.22776 · Cited by 89
Wei, M., Xu, J., Dignam, J. J., Nanda, R., Sveen, L., Fackenthal, J. D., Grushko, T. A., & Olopade, O. I. (2007) · Breast Cancer Research and Treatment · doi:10.1007/s10549-007-9766-6 · Cited by 83
“Interestingly, BRCA1-mutated tumors and BRCA1 promoter-methylated tumors also have an excess of medullary subtype [24].”
BackgroundSharma, G., Mirza, S., Parshad, R., Srivastava, A., Gupta, S. D., Pandya, P., & Ralhan, R. (2010) · Life Sciences · doi:10.1016/j.lfs.2010.05.001 · Cited by 84
“Primers and PCR conditions used for methylation-specific PCR (MSP) of BRCA1, GSTP1 and MGMT are from published studies and have been standardized in our laboratory (Esteller et al. 2000; Gonzalgo et al. 2003; Qi et al. 2005).”
MethodPierozan, P., Cattani, D., & Karlsson, O. (2020) · Archives of Toxicology · doi:10.1007/s00204-020-02848-6 · Cited by 87
Lee, H.-K., Lee, S.-Y., Jeong, D., & Kim, S. J. (2017) · Journal of Ginseng Research · doi:10.1016/j.jgr.2017.05.003 · Cited by 83
Genomic instability and the selection of treatments for cancer
Martin, S. A., Hewish, M., Lord, C. J., & Ashworth, A. (2009) · The Journal of Pathology · doi:10.1002/path.2631 · Cited by 80
“BRCA1 hypermethylation has been observed in a number of sporadic breast and ovarian cancers [44–46].”
Background
Metadata
- Authors
- Esteller, M.
- Affiliations
- Roswell Park Comprehensive Cancer Center (US)
- Corresponding author
- Esteller, M.
- ORCID
- Esteller, M.
- Venue
- Journal of the National Cancer Institute
- Publisher
- Oxford University Press (OUP)
- Published
- 2000-04-05
- Volume
- 92
- Issue
- 7
- Pages
- 564-569
- ISSN
- 0027-8874 (ISSN-L)
- 1460-2105
- OpenAlex
- W2160234594
- Cited by
- 1,233
- References
- 41
- Citations by year
- 2026: 20 · 2025: 33 · 2024: 37 · 2023: 46 · 2022: 49 · 2021: 40 · 2020: 53 · 2019: 43 · 2018: 60 · 2017: 48 · 2016: 52 · 2015: 69 · 2014: 56 · 2013: 57 · 2012: 69
- FWCI
- 22.63
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- JNCI Journal of the National Cancer Institute (publishedVersion)
- PubMed (publishedVersion)
- EUR Research Repository (Erasmus University Rotterdam) (publishedVersion)
- EUR Research Repository (Erasmus University Rotterdam) (submittedVersion)
- Funders
- National Cancer Institute (R01CA043318, CA 43318)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › BRCA gene mutations in cancer
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
- Health Sciences › Medicine › Pathology and Forensic Medicine › Breast Lesions and Carcinomas
- Keywords
- BRCA1 promoter hypermethylation, sporadic breast cancer, ovarian cancer, loss of heterozygosity, gene silencing, tumor suppressor, medullary breast carcinoma, mucinous breast carcinoma, histological subtypes, epigenetic silencing, breast cancer xenografts
- MeSH terms
- Breast Neoplasms, Female, Humans, Methylation, Ovarian Neoplasms, Promoter Regions, Genetic, RNA, RNA, Neoplasm, Transplantation, Heterologous, Tumor Cells, Cultured, Gene Expression Regulation, Neoplastic, Carcinoma, Ductal, Breast, Genes, BRCA1, Loss of Heterozygosity, Reverse Transcriptase Polymerase Chain Reaction
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