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Heyer EE, Blackburn J. Sequencing Strategies for Fusion Gene Detection. Bioessays 2020; 42:e2000016. [DOI: 10.1002/bies.202000016] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/11/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Erin E. Heyer
- The Kinghorn Cancer CentreGarvan Institute of Medical Research 384 Victoria Street Darlinghurst NSW 2010 Australia
| | - James Blackburn
- The Kinghorn Cancer CentreGarvan Institute of Medical Research 384 Victoria Street Darlinghurst NSW 2010 Australia
- Faculty of Medicine, St. Vincent's Clinical SchoolUNSW, St Vincent's Hospital Victoria Street Darlinghurst NSW 2010 Australia
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2
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Targeting Notch3 in Hepatocellular Carcinoma: Molecular Mechanisms and Therapeutic Perspectives. Int J Mol Sci 2016; 18:ijms18010056. [PMID: 28036048 PMCID: PMC5297691 DOI: 10.3390/ijms18010056] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 12/12/2016] [Accepted: 12/16/2016] [Indexed: 12/15/2022] Open
Abstract
The Notch signaling pathway is a very conserved system that controls embryonic cell fate decisions and the maintenance of adult stem cells through cell to cell communication. Accumulating evidence support the relevance of Notch signaling in different human diseases and it is one of the most commonly activated signaling pathways in cancer. This review focuses mainly on the role of Notch3 signaling in hepatocellular carcinoma and its potential therapeutic applications against this malignancy. In this regard, the crosstalk between Notch and p53 may play an important role.
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Daga A, Ansari A, Rawal R, Umrania V. Characterization of chromosomal translocation breakpoint sequences in solid tumours: "an in silico analysis". Open Med Inform J 2015; 9:1-8. [PMID: 25972994 PMCID: PMC4421838 DOI: 10.2174/1874431101509010001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 02/19/2015] [Accepted: 02/28/2015] [Indexed: 01/07/2023] Open
Abstract
Chromosomal translocations that results in formation and activation of fusion oncogenes are observed in numerous solid malignancies since years back. Expression of fusion kinases in these cancers drives the initiation & progression that ultimately leads to tumour development and thus comes out to be clinically imperative in terms of diagnosis and treatment of cancer. Nonetheless, molecular mechanisms beneath these translocations remained unexplored consequently limiting our knowledge of carcinogenesis and hence is the current field where further research is required. The issue of prime focus is the precision with which the chromosomes breaks and reunites within genome. Characterization of Genomic sequences located at Breakpoint region may direct us towards the thorough understanding of mechanism leading to chromosomal rearrangement. A unique computational multi-parametric analysis was performed for characterization of genomic sequence within and around breakpoint region. This study turns out to be novel as it reveals the occurrence of Segmental Duplications flanking the breakpoints of all translocation. Breakpoint Islands were also investigated for the presence of other intricate genomic architecture and various physico-chemical parameters. Our study particularly highlights the probable role of SDs and specific genomic features in precise chromosomal breakage. Additionally, it pinpoints the potential features that may be significant for double-strand breaks leading to chromosomal rearrangements.
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Affiliation(s)
- Aditi Daga
- Department of Microbiology, MVM Science College, Saurashtra University, Rajkot, Gujarat, India
| | - Afzal Ansari
- BIT Virtual Institute of Bioinformatics (GCRI Node), GSBTM, Gandhinagar, Gujarat, India
| | - Rakesh Rawal
- Department of Cancer Biology, The Gujarat Cancer & Research Institute, Ahmedabad, Gujarat, India
| | - Valentina Umrania
- Department of Microbiology, MVM Science College, Saurashtra University, Rajkot, Gujarat, India
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Jividen K, Li H. Chimeric RNAs generated by intergenic splicing in normal and cancer cells. Genes Chromosomes Cancer 2014; 53:963-71. [PMID: 25131334 DOI: 10.1002/gcc.22207] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Accepted: 07/16/2014] [Indexed: 12/30/2022] Open
Abstract
A hallmark of many neoplasias is chromosomal rearrangement, an event that commonly results in the fusion of two separate genes. The RNA and protein resulting from these gene fusions often play critical roles in cancer development, maintenance, and progression. Traditionally, these fusion products are thought to be produced solely due to DNA level changes and are therefore considered unique to cancer. Recent advances in microarray and deep-sequencing have revealed many more fusion transcripts. Surprisingly, some are without detectable rearrangement at the DNA level. Reports have demonstrated that at least some of these chimeric RNAs are generated via intergenic splicing. In this review, we highlight three examples of these noncanonical chimeric transcripts that are formed by trans-splicing or cis-splicing of adjacent genes and summarize the knowledge we have regarding these noncanonical fusions. We discuss the implications of the chimeric RNAs in both cancer and normal physiology, as some of these fusion transcripts are found in normal, noncancerous cells with sequences identical to those generated by canonical chromosomal translocation found in cancer cells. Finally, we present methods that are currently being used to discover additional chimeric RNAs.
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Affiliation(s)
- Kasey Jividen
- Department of Pathology, University of Virginia, Charlottesville, VA
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Jeck WR, Parker J, Carson CC, Shields JM, Sambade MJ, Peters EC, Burd CE, Thomas NE, Chiang DY, Liu W, Eberhard DA, Ollila D, Grilley-Olson J, Moschos S, Neil Hayes D, Sharpless NE. Targeted next generation sequencing identifies clinically actionable mutations in patients with melanoma. Pigment Cell Melanoma Res 2014; 27:653-63. [PMID: 24628946 PMCID: PMC4121659 DOI: 10.1111/pcmr.12238] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Revised: 01/08/2014] [Indexed: 12/30/2022]
Abstract
Somatic sequencing of cancers has produced new insight into tumorigenesis, tumor heterogeneity, and disease progression, but the vast majority of genetic events identified are of indeterminate clinical significance. Here, we describe a NextGen sequencing approach to fully analyzing 248 genes, including all those of known clinical significance in melanoma. This strategy features solution capture of DNA followed by multiplexed, high-throughput sequencing and was evaluated in 31 melanoma cell lines and 18 tumor tissues from patients with metastatic melanoma. Mutations in melanoma cell lines correlated with their sensitivity to corresponding small molecule inhibitors, confirming, for example, lapatinib sensitivity in ERBB4 mutant lines and identifying a novel activating mutation of BRAF. The latter event would not have been identified by clinical sequencing and was associated with responsiveness to a BRAF kinase inhibitor. This approach identified focal copy number changes of PTEN not found by standard methods, such as comparative genomic hybridization (CGH). Actionable mutations were found in 89% of the tumor tissues analyzed, 56% of which would not be identified by standard-of-care approaches. This work shows that targeted sequencing is an attractive approach for clinical use in melanoma.
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Affiliation(s)
- William R Jeck
- Department of Genetics, University of North Carolina School of Medicine, Chapel Hill, NC, USA
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Fusion FISH imaging: single-molecule detection of gene fusion transcripts in situ. PLoS One 2014; 9:e93488. [PMID: 24675777 PMCID: PMC3968151 DOI: 10.1371/journal.pone.0093488] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2013] [Accepted: 03/06/2014] [Indexed: 11/24/2022] Open
Abstract
Double-stranded DNA breaks occur on a regular basis in the human genome as a consequence of genotoxic stress and errors during replication. Usually these breaks are rapidly and faithfully repaired, but occasionally different chromosomes, or different regions of the same chromosome, are fused to each other. Some of these aberrant chromosomal translocations yield functional recombinant genes, which have been implicated as the cause of a number of lymphomas, leukemias, sarcomas, and solid tumors. Reliable methods are needed for the in situ detection of the transcripts encoded by these recombinant genes. We have developed just such a method, utilizing single-molecule fluorescence in situ hybridization (sm-FISH), in which approximately 50 short fluorescent probes bind to adjacent sites on the same mRNA molecule, rendering each target mRNA molecule visible as a diffraction-limited spot in a fluorescence microscope. Utilizing this method, gene fusion transcripts are detected with two differently colored probe sets, each specific for one of the two recombinant segments of a target mRNA; enabling the fusion transcripts to be seen in the microscope as distinct spots that fluoresce in both colors. We demonstrate this method by detecting the BCR-ABL fusion transcripts that occur in chronic myeloid leukemia cells, and by detecting the EWSR1-FLI1 fusion transcripts that occur in Ewing's sarcoma cells. This technology should pave the way for accurate in situ typing of many cancers that are associated with, or caused by, fusion transcripts.
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Weigelt B, Reis-Filho JS. Epistatic interactions and drug response. J Pathol 2014; 232:255-63. [PMID: 24105606 DOI: 10.1002/path.4265] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 09/10/2013] [Accepted: 09/11/2013] [Indexed: 02/06/2023]
Abstract
The advent of massively parallel sequencing has allowed for an unprecedented genetic characterization of cancers, which has revealed not only the complexity of cancer genomes, but also the fact that tumours from the same anatomical site or even of the same histological and/or molecular subtype display distinct constellations of somatic genetic aberrations. Epistatic interactions (ie the interplay between genetic aberrations) are likely to play pivotal roles not only in terms of tumourigenesis and disease progression, but also in response to therapeutic interventions. In this review, we discuss the challenges posed by the complexity of tumour genomes and epistatic interactions, and approaches for harnessing the wealth of genetic information on human cancers for the implementation of precision medicine.
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Affiliation(s)
- Britta Weigelt
- Department of Pathology, Memorial Sloan-Kettering Cancer Center, New York, NY, 10065, USA
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Identification of the transforming STRN-ALK fusion as a potential therapeutic target in the aggressive forms of thyroid cancer. Proc Natl Acad Sci U S A 2014; 111:4233-8. [PMID: 24613930 DOI: 10.1073/pnas.1321937111] [Citation(s) in RCA: 188] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Thyroid cancer is a common endocrine malignancy that encompasses well-differentiated as well as dedifferentiated cancer types. The latter tumors have high mortality and lack effective therapies. Using a paired-end RNA-sequencing approach, we report the discovery of rearrangements involving the anaplastic lymphoma kinase (ALK) gene in thyroid cancer. The most common of these involves a fusion between ALK and the striatin (STRN) gene, which is the result of a complex rearrangement involving the short arm of chromosome 2. STRN-ALK leads to constitutive activation of ALK kinase via dimerization mediated by the coiled-coil domain of STRN and to a kinase-dependent, thyroid-stimulating hormone-independent proliferation of thyroid cells. Moreover, expression of STRN-ALK transforms cells in vitro and induces tumor formation in nude mice. The kinase activity of STRN-ALK and the ALK-induced cell growth can be blocked by the ALK inhibitors crizotinib and TAE684. In addition to well-differentiated papillary cancer, STRN-ALK was found with a higher prevalence in poorly differentiated and anaplastic thyroid cancers, and it did not overlap with other known driver mutations in these tumors. Our data demonstrate that STRN-ALK fusion occurs in a subset of patients with highly aggressive types of thyroid cancer and provide initial evidence suggesting that it may represent a therapeutic target for these patients.
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Frattini V, Trifonov V, Chan JM, Castano A, Lia M, Abate F, Keir ST, Ji AX, Zoppoli P, Niola F, Danussi C, Dolgalev I, Porrati P, Pellegatta S, Heguy A, Gupta G, Pisapia DJ, Canoll P, Bruce JN, McLendon RE, Yan H, Aldape K, Finocchiaro G, Mikkelsen T, Privé GG, Bigner DD, Lasorella A, Rabadan R, Iavarone A. The integrated landscape of driver genomic alterations in glioblastoma. Nat Genet 2013; 45:1141-9. [PMID: 23917401 PMCID: PMC3799953 DOI: 10.1038/ng.2734] [Citation(s) in RCA: 412] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Accepted: 07/29/2013] [Indexed: 12/12/2022]
Abstract
Glioblastoma is one of the most challenging forms of cancer to treat. Here we describe a computational platform that integrates the analysis of copy number variations and somatic mutations and unravels the landscape of in-frame gene fusions in glioblastoma. We found mutations with loss of heterozygosity in LZTR1, encoding an adaptor of CUL3-containing E3 ligase complexes. Mutations and deletions disrupt LZTR1 function, which restrains the self renewal and growth of glioma spheres that retain stem cell features. Loss-of-function mutations in CTNND2 target a neural-specific gene and are associated with the transformation of glioma cells along the very aggressive mesenchymal phenotype. We also report recurrent translocations that fuse the coding sequence of EGFR to several partners, with EGFR-SEPT14 being the most frequent functional gene fusion in human glioblastoma. EGFR-SEPT14 fusions activate STAT3 signaling and confer mitogen independence and sensitivity to EGFR inhibition. These results provide insights into the pathogenesis of glioblastoma and highlight new targets for therapeutic intervention.
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Affiliation(s)
- Veronique Frattini
- 1] Institute for Cancer Genetics, Columbia University Medical Center, New York, New York, USA. [2]
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Gene fusions associated with recurrent amplicons represent a class of passenger aberrations in breast cancer. Neoplasia 2013; 14:702-8. [PMID: 22952423 DOI: 10.1593/neo.12914] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Revised: 07/09/2012] [Accepted: 07/10/2012] [Indexed: 02/03/2023] Open
Abstract
Application of high-throughput transcriptome sequencing has spurred highly sensitive detection and discovery of gene fusions in cancer, but distinguishing potentially oncogenic fusions from random, "passenger" aberrations has proven challenging. Here we examine a distinctive group of gene fusions that involve genes present in the loci of chromosomal amplifications--a class of oncogenic aberrations that are widely prevalent in breast cancers. Integrative analysis of a panel of 14 breast cancer cell lines comparing gene fusions discovered by high-throughput transcriptome sequencing and genome-wide copy number aberrations assessed by array comparative genomic hybridization, led to the identification of 77 gene fusions, of which more than 60% were localized to amplicons including 17q12, 17q23, 20q13, chr8q, and others. Many of these fusions appeared to be recurrent or involved highly expressed oncogenic drivers, frequently fused with multiple different partners, but sometimes displaying loss of functional domains. As illustrative examples of the "amplicon-associated" gene fusions, we examined here a recurrent gene fusion involving the mediator of mammalian target of rapamycin signaling, RPS6KB1 kinase in BT-474, and the therapeutically important receptor tyrosine kinase EGFR in MDA-MB-468 breast cancer cell line. These gene fusions comprise a minor allelic fraction relative to the highly expressed full-length transcripts and encode chimera lacking the kinase domains, which do not impart dependence on the respective cells. Our study suggests that amplicon-associated gene fusions in breast cancer primarily represent a by-product of chromosomal amplifications, which constitutes a subset of passenger aberrations and should be factored accordingly during prioritization of gene fusion candidates.
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Kumar-Sinha C, Kalyana-Sundaram S, Chinnaiyan AM. SLC45A3-ELK4 chimera in prostate cancer: spotlight on cis-splicing. Cancer Discov 2012; 2:582-5. [PMID: 22787087 DOI: 10.1158/2159-8290.cd-12-0212] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Using a series of detailed experiments, Zhang and colleagues establish that the prostate cancer RNA chimera SLC45A3-ELK4 is generated by cis-splicing between the 2 adjacent genes and does not involve DNA rearrangements or trans-splicing. The chimera expression is induced by androgen treatment likely by overcoming the read-through block imposed by the intergenic CCCTC insulators bound by CCCTC-binding factor repressor protein. The chimeric transcript, but not wild-type ELK4, is shown to augment prostate cancer cell proliferation.
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Affiliation(s)
- Chandan Kumar-Sinha
- Michigan Center for Translational Pathology, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA
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Spivey TL, De Giorgi V, Zhao Y, Bedognetti D, Pos Z, Liu Q, Tomei S, Ascierto ML, Uccellini L, Reinboth J, Chouchane L, Stroncek DF, Wang E, Marincola FM. The stable traits of melanoma genetics: an alternate approach to target discovery. BMC Genomics 2012; 13:156. [PMID: 22537248 PMCID: PMC3362771 DOI: 10.1186/1471-2164-13-156] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Accepted: 04/26/2012] [Indexed: 12/18/2022] Open
Abstract
Background The weight that gene copy number plays in transcription remains controversial; although in specific cases gene expression correlates with copy number, the relationship cannot be inferred at the global level. We hypothesized that genes steadily expressed by 15 melanoma cell lines (CMs) and their parental tissues (TMs) should be critical for oncogenesis and their expression most frequently influenced by their respective copy number. Results Functional interpretation of 3,030 transcripts concordantly expressed (Pearson's correlation coefficient p-value < 0.05) by CMs and TMs confirmed an enrichment of functions crucial to oncogenesis. Among them, 968 were expressed according to the transcriptional efficiency predicted by copy number analysis (Pearson's correlation coefficient p-value < 0.05). We named these genes, "genomic delegates" as they represent at the transcriptional level the genetic footprint of individual cancers. We then tested whether the genes could categorize 112 melanoma metastases. Two divergent phenotypes were observed: one with prevalent expression of cancer testis antigens, enhanced cyclin activity, WNT signaling, and a Th17 immune phenotype (Class A). This phenotype expressed, therefore, transcripts previously associated to more aggressive cancer. The second class (B) prevalently expressed genes associated with melanoma signaling including MITF, melanoma differentiation antigens, and displayed a Th1 immune phenotype associated with better prognosis and likelihood to respond to immunotherapy. An intermediate third class (C) was further identified. The three phenotypes were confirmed by unsupervised principal component analysis. Conclusions This study suggests that clinically relevant phenotypes of melanoma can be retraced to stable oncogenic properties of cancer cells linked to their genetic back bone, and offers a roadmap for uncovering novel targets for tailored anti-cancer therapy.
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Affiliation(s)
- Tara L Spivey
- Infectious Disease and Immunogenetics Section (IDIS), Department of Transfusion Medicine, Clinical Center and trans-NIH Center for Human Immunology (CHI), National Institutes of Health, Bethesda, MD 20892, USA
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Arneson N, Moreno J, Iakovlev V, Ghazani A, Warren K, McCready D, Jurisica I, Done SJ. Comparison of whole genome amplification methods for analysis of DNA extracted from microdissected early breast lesions in formalin-fixed paraffin-embedded tissue. ISRN ONCOLOGY 2012; 2012:710692. [PMID: 22530150 PMCID: PMC3317021 DOI: 10.5402/2012/710692] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Accepted: 11/09/2011] [Indexed: 12/03/2022]
Abstract
To understand cancer progression, it is desirable to study the earliest stages of its development, which are often microscopic lesions. Array comparative genomic hybridization (aCGH) is a valuable high-throughput molecular approach for discovering DNA copy number changes; however, it requires a relatively large amount of DNA, which is difficult to obtain from microdissected lesions. Whole genome amplification (WGA) methods were developed to increase DNA quantity; however their reproducibility, fidelity, and suitability for formalin-fixed paraffin-embedded (FFPE) samples are questioned. Using aCGH analysis, we compared two widely used approaches for WGA: single cell comparative genomic hybridization protocol (SCOMP) and degenerate oligonucleotide primed PCR (DOP-PCR). Cancer cell line and microdissected FFPE breast cancer DNA samples were amplified by the two WGA methods and subjected to aCGH. The genomic profiles of amplified DNA were compared with those of non-amplified controls by four analytic methods and validated by quantitative PCR (Q-PCR). We found that SCOMP-amplified samples had close similarity to non-amplified controls with concordance rates close to those of reference tests, while DOP-amplified samples had a statistically significant amount of changes. SCOMP is able to amplify small amounts of DNA extracted from FFPE samples and provides quality of aCGH data similar to non-amplified samples.
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Affiliation(s)
- Nona Arneson
- Division of Applied Molecular Oncology, Ontario Cancer Institute, Princess Margaret Hospital, Toronto, ON, Canada M5G 2M9
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Salagierski M, Schalken JA. Molecular diagnosis of prostate cancer: PCA3 and TMPRSS2:ERG gene fusion. J Urol 2012; 187:795-801. [PMID: 22245323 DOI: 10.1016/j.juro.2011.10.133] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Indexed: 01/24/2023]
Abstract
PURPOSE Widespread prostate specific antigen screening together with the increase in the number of biopsy cores has led to increased prostate cancer incidence. Standard diagnostic tools still cannot unequivocally predict prostate cancer progression, which often results in a significant overtreatment rate. We present recent findings on PCA3 and TMPRSS:ERG fusion, and describe their clinical implications and performance. MATERIALS AND METHODS The PubMed® database was searched for reports on PCA3 (130 articles), TMPRSS:ERG and ETS fusion (180 publications) since 1999. RESULTS In recent years advances in genetics and biotechnology have stimulated the development of noninvasive tests to detect prostate cancer. Serum and urine molecular biomarkers have been identified, of which PCA3 has already been introduced clinically. The identification of prostate cancer specific genomic aberrations, ie TMPRSS2:ERG gene fusion, might improve diagnosis and affect prostate cancer treatment. CONCLUSIONS Although several recently developed markers are promising, often showing increased specificity for prostate cancer detection compared to that of prostate specific antigen, their clinical application is limited. The only 2 true prostate cancer specific biomarkers identified to date remain PCA3 and TMPRSS2:ERG gene fusion.
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Affiliation(s)
- Maciej Salagierski
- Department of Urology, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
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Yuan Y, Ferguson LR. Nutrigenetics and Prostate Cancer: 2011 and Beyond. JOURNAL OF NUTRIGENETICS AND NUTRIGENOMICS 2011; 4:121-36. [DOI: 10.1159/000327902] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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