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Guan P, Wong SF, Lim JQ, Ng CCY, Soong PL, Sim CQX, Ong CK, Rajasegaran V, Myint SS, Lee JY, Tan HK, Iyer NG, Soo KC, Teh BT, Tay ABG. Mutational Signatures in Mandibular Ameloblastoma Correlate with Smoking. J Dent Res 2019; 98:652-658. [PMID: 30917298 DOI: 10.1177/0022034519837248] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Ameloblastoma is a rare tumor of odontogenic epithelium, the low incidence rate of which precludes statistical determination of its molecular characterizations. Despite recent genomic and transcriptomic profiling, the etiology of ameloblastomas remains poorly understood. Risk factors of ameloblastoma development are also largely unknown. Whole exome sequencing was performed on 11 mandibular ameloblastoma samples. We identified 2 convergent mutational signatures in ameloblastoma: 1) a signature found in multiple types of lung cancers with probable etiology of tobacco carcinogens (COSMIC signature 4) and 2) a signature present in gingivobuccal oral squamous cell carcinoma and correlated with tobacco-chewing habits (COSMIC signature 29). These mutational signatures highlight tobacco usage or related mutagens as one possible risk factor of ameloblastoma, since the association of BRAF mutations and smoking was demonstrated in multiple studies. In addition to BRAF hotspot mutations (V600E), we observed clear inter- and intratumor heterogeneities. Interestingly, prior to BRAF mutation, important genes regulating odontogenesis mutated (e.g., corepressor BCOR), possibly playing important roles in tumorigenesis. Furthermore, recurrent mutations in the CDC73 gene, the germline mutations of which predispose patients to the development of jaw tumors, were found in 2 patients, which may lead to recurrence if not targeted by therapeutic drugs. Our unbiased profiling of coding regions of ameloblastoma genomes provides insights to the possible etiology of mandibular ameloblastoma and highlights potential disease risk factors for screening and prevention, especially for Asian patients. Because of the limited sample size and incomplete habitual, dietary, and occupational data, a causal link between tobacco usage and ameloblastoma still requires further investigations.
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Affiliation(s)
- P Guan
- 1 Integrated Biostatistics and Bioinformatics Programme, Duke-NUS Medical School, Singapore.,2 Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore.,3 Centre for Computational Biology, Duke-NUS Medical School, Singapore
| | - S F Wong
- 2 Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore
| | - J Q Lim
- 2 Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore.,4 Lymphoma Genomic Translational Research Laboratory, National Cancer Centre Singapore, Singapore
| | - C C Y Ng
- 2 Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore
| | - P L Soong
- 5 Department of Oral and Maxillofacial Surgery, National Dental Centre Singapore, Singapore
| | - C Q X Sim
- 5 Department of Oral and Maxillofacial Surgery, National Dental Centre Singapore, Singapore
| | - C K Ong
- 4 Lymphoma Genomic Translational Research Laboratory, National Cancer Centre Singapore, Singapore
| | - V Rajasegaran
- 2 Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore
| | - S S Myint
- 2 Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore
| | - J Y Lee
- 2 Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore
| | - H K Tan
- 6 Division of Surgical Oncology, National Cancer Centre Singapore, Singapore
| | - N G Iyer
- 6 Division of Surgical Oncology, National Cancer Centre Singapore, Singapore
| | - K C Soo
- 6 Division of Surgical Oncology, National Cancer Centre Singapore, Singapore
| | - B T Teh
- 2 Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore.,7 Cancer Science Institute of Singapore, National University of Singapore, Singapore.,8 Institute of Molecular and Cell Biology, Singapore.,9 Cancer and Stem Cell Biology Programme, Duke-NUS Medical School, Singapore.,10 SingHealth/Duke-NUS Institute of Precision Medicine, National Heart Centre Singapore, Singapore
| | - A B G Tay
- 5 Department of Oral and Maxillofacial Surgery, National Dental Centre Singapore, Singapore
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2
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Nairismägi ML, Gerritsen ME, Li ZM, Wijaya GC, Chia BKH, Laurensia Y, Lim JQ, Yeoh KW, Yao XS, Pang WL, Bisconte A, Hill RJ, Bradshaw JM, Huang D, Song TLL, Ng CCY, Rajasegaran V, Tang T, Tang QQ, Xia XJ, Kang TB, Teh BT, Lim ST, Ong CK, Tan J. Oncogenic activation of JAK3-STAT signaling confers clinical sensitivity to PRN371, a novel selective and potent JAK3 inhibitor, in natural killer/T-cell lymphoma. Leukemia 2018; 32:1147-1156. [PMID: 29434279 PMCID: PMC5940653 DOI: 10.1038/s41375-017-0004-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 11/17/2017] [Accepted: 12/04/2017] [Indexed: 02/06/2023]
Abstract
Aberrant activation of the JAK3-STAT signaling pathway is a characteristic feature of many hematological malignancies. In particular, hyperactivity of this cascade has been observed in natural killer/T-cell lymphoma (NKTL) cases. Although the first-in-class JAK3 inhibitor tofacitinib blocks JAK3 activity in NKTL both in vitro and in vivo, its clinical utilization in cancer therapy has been limited by the pan-JAK inhibition activity. To improve the therapeutic efficacy of JAK3 inhibition in NKTL, we have developed a highly selective and durable JAK3 inhibitor PRN371 that potently inhibits JAK3 activity over the other JAK family members JAK1, JAK2, and TYK2. PRN371 effectively suppresses NKTL cell proliferation and induces apoptosis through abrogation of the JAK3-STAT signaling. Moreover, the activity of PRN371 has a more durable inhibition on JAK3 compared to tofacitinib in vitro, leading to significant tumor growth inhibition in a NKTL xenograft model harboring JAK3 activating mutation. These findings provide a novel therapeutic approach for the treatment of NKTL.
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Affiliation(s)
- M -L Nairismägi
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | | | - Z M Li
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - G C Wijaya
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - B K H Chia
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - Y Laurensia
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - J Q Lim
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - K W Yeoh
- Department of Radiation Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - X S Yao
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - W L Pang
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - A Bisconte
- Principia Biopharma, South San Francisco, CA, USA
| | - R J Hill
- Principia Biopharma, South San Francisco, CA, USA
| | - J M Bradshaw
- Principia Biopharma, South San Francisco, CA, USA
| | - D Huang
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - T L L Song
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - C C Y Ng
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - V Rajasegaran
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - T Tang
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - Q Q Tang
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - X J Xia
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - T B Kang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - B T Teh
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore.,Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - S T Lim
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore.,Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore.,Office of Education, Duke-NUS Graduate Medical School, Singapore, Singapore
| | - C K Ong
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore. .,Genome Institute of Singapore, A*STAR, Singapore, Singapore.
| | - J Tan
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore. .,State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, China.
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3
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Vis DJ, Lewin J, Liao RG, Mao M, Andre F, Ward RL, Calvo F, Teh BT, Camargo AA, Knoppers BM, Sawyers CL, Wessels LFA, Lawler M, Siu LL, Voest E. Towards a global cancer knowledge network: dissecting the current international cancer genomic sequencing landscape. Ann Oncol 2017; 28:1145-1151. [PMID: 28453708 PMCID: PMC5406763 DOI: 10.1093/annonc/mdx037] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND While next generation sequencing has enhanced our understanding of the biological basis of malignancy, current knowledge on global practices for sequencing cancer samples is limited. To address this deficiency, we developed a survey to provide a snapshot of current sequencing activities globally, identify barriers to data sharing and use this information to develop sustainable solutions for the cancer research community. METHODS A multi-item survey was conducted assessing demographics, clinical data collection, genomic platforms, privacy/ethics concerns, funding sources and data sharing barriers for sequencing initiatives globally. Additionally, respondents were asked as to provide the primary intent of their initiative (clinical diagnostic, research or combination). RESULTS Of 107 initiatives invited to participate, 59 responded (response rate = 55%). Whole exome sequencing (P = 0.03) and whole genome sequencing (P = 0.01) were utilized less frequently in clinical diagnostic than in research initiatives. Procedures to identify cancer-specific variants were heterogeneous, with bioinformatics pipelines employing different mutation calling/variant annotation algorithms. Measurement of treatment efficacy varied amongst initiatives, with time on treatment (57%) and RECIST (53%) being the most common; however, other parameters were also employed. Whilst 72% of initiatives indicated data sharing, its scope varied, with a number of restrictions in place (e.g. transfer of raw data). The largest perceived barriers to data harmonization were the lack of financial support (P < 0.01) and bioinformatics concerns (e.g. lack of interoperability) (P = 0.02). Capturing clinical data was more likely to be perceived as a barrier to data sharing by larger initiatives than by smaller initiatives (P = 0.01). CONCLUSIONS These results identify the main barriers, as perceived by the cancer sequencing community, to effective sharing of cancer genomic and clinical data. They highlight the need for greater harmonization of technical, ethical and data capture processes in cancer sample sequencing worldwide, in order to support effective and responsible data sharing for the benefit of patients.
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Affiliation(s)
- D. J. Vis
- Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - J. Lewin
- Princess Margaret Cancer Centre, Toronto, Canada
| | - R. G. Liao
- Global Alliance for Genomics and Health, Broad Institute, Cambridge, USA
| | - M. Mao
- Yonsei Cancer Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - F. Andre
- INSERM U981, Université Paris Sud, Institut Gustave Roussy, Villejuif, France
| | - R. L. Ward
- Research, University of Queensland, Brisbane, Australia
| | - F. Calvo
- Cancer Core Europe, Gustave Roussy, Villejuif, France
| | | | | | - B. M. Knoppers
- Centre of Genomics and Policy, McGill University, Montreal, Canada
| | - C. L. Sawyers
- Memorial Sloan Kettering Cancer Centre, New York, USA
| | - L. F. A. Wessels
- Netherlands Cancer Institute, Amsterdam, The Netherlands
- Department of Bioinformatics & Statistics, Delft University of Technology, Delft, The Netherlands
| | - M. Lawler
- Centre for Cancer Research and Cell Biology, Queen’s University Belfast, Belfast, UK
| | - L. L. Siu
- Princess Margaret Cancer Centre, Toronto, Canada
| | - E. Voest
- Netherlands Cancer Institute, Amsterdam, The Netherlands
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4
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Walls GV, Stevenson M, Lines KE, Newey PJ, Reed AAC, Bowl MR, Jeyabalan J, Harding B, Bradley KJ, Manek S, Chen J, Wang P, Williams BO, Teh BT, Thakker RV. Mice deleted for cell division cycle 73 gene develop parathyroid and uterine tumours: model for the hyperparathyroidism-jaw tumour syndrome. Oncogene 2017; 36:4025-4036. [PMID: 28288139 PMCID: PMC5472200 DOI: 10.1038/onc.2017.43] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 12/22/2016] [Accepted: 01/24/2017] [Indexed: 02/06/2023]
Abstract
The hyperparathyroidism-jaw tumour (HPT-JT) syndrome is an autosomal dominant disorder characterized by occurrence of parathyroid tumours, often atypical adenomas and carcinomas, ossifying jaw fibromas, renal tumours and uterine benign and malignant neoplasms. HPT-JT is caused by mutations of the cell division cycle 73 (CDC73) gene, located on chromosome 1q31.2 and encodes a 531 amino acid protein, parafibromin. To facilitate in vivo studies of Cdc73 in tumourigenesis we generated conventional (Cdc73+/-) and conditional parathyroid-specific (Cdc73+/L/PTH-Cre and Cdc73L/L/PTH-Cre) mouse models. Mice were aged to 18-21 months and studied for survival, tumour development and proliferation, and serum biochemistry, and compared to age-matched wild-type (Cdc73+/+ and Cdc73+/+/PTH-Cre) littermates. Survival of Cdc73+/- mice, when compared to Cdc73+/+ mice was reduced (Cdc73+/-=80%; Cdc73+/+=90% at 18 months of age, P<0.05). Cdc73+/-, Cdc73+/L/PTH-Cre and Cdc73L/L/PTH-Cre mice developed parathyroid tumours, which had nuclear pleomorphism, fibrous septation and increased galectin-3 expression, consistent with atypical parathyroid adenomas, from 9 months of age. Parathyroid tumours in Cdc73+/-, Cdc73+/L/PTH-Cre and Cdc73L/L/PTH-Cre mice had significantly increased proliferation, with rates >fourfold higher than that in parathyroid glands of wild-type littermates (P<0.0001). Cdc73+/-, Cdc73+/L/PTH-Cre and Cdc73L/L/PTH-Cre mice had higher mean serum calcium concentrations than wild-type littermates, and Cdc73+/- mice also had increased mean serum parathyroid hormone (PTH) concentrations. Parathyroid tumour development, and elevations in serum calcium and PTH, were similar in males and females. Cdc73+/- mice did not develop bone or renal tumours but female Cdc73+/- mice, at 18 months of age, had uterine neoplasms comprising squamous metaplasia, adenofibroma and adenomyoma. Uterine neoplasms, myometria and jaw bones of Cdc73+/- mice had increased proliferation rates that were 2-fold higher than in Cdc73+/+ mice (P<0.05). Thus, our studies, which have established mouse models for parathyroid tumours and uterine neoplasms that develop in the HPT-JT syndrome, provide in vivo models for future studies of these tumours.
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Affiliation(s)
- G V Walls
- Academic Endocrine Unit, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), Radcliffe Department of Medicine, University of Oxford, Churchill Hospital, Oxford, UK
| | - M Stevenson
- Academic Endocrine Unit, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), Radcliffe Department of Medicine, University of Oxford, Churchill Hospital, Oxford, UK
| | - K E Lines
- Academic Endocrine Unit, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), Radcliffe Department of Medicine, University of Oxford, Churchill Hospital, Oxford, UK
| | - P J Newey
- Academic Endocrine Unit, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), Radcliffe Department of Medicine, University of Oxford, Churchill Hospital, Oxford, UK
| | - A A C Reed
- Academic Endocrine Unit, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), Radcliffe Department of Medicine, University of Oxford, Churchill Hospital, Oxford, UK
| | - M R Bowl
- Academic Endocrine Unit, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), Radcliffe Department of Medicine, University of Oxford, Churchill Hospital, Oxford, UK
| | - J Jeyabalan
- Academic Endocrine Unit, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), Radcliffe Department of Medicine, University of Oxford, Churchill Hospital, Oxford, UK
| | - B Harding
- Academic Endocrine Unit, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), Radcliffe Department of Medicine, University of Oxford, Churchill Hospital, Oxford, UK
| | - K J Bradley
- Academic Endocrine Unit, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), Radcliffe Department of Medicine, University of Oxford, Churchill Hospital, Oxford, UK
| | - S Manek
- Department of Pathology, John Radcliffe Hospital, Headley Way, Oxford, UK
| | - J Chen
- Laboratory of Cancer Genetics, Van Andel Research Institute, Grand Rapids, MI, USA
| | - P Wang
- Laboratory of Cancer Genetics, Van Andel Research Institute, Grand Rapids, MI, USA
| | - B O Williams
- Center for Cancer and Cell Biology, Van Andel Research Institute, Grand Rapids, MI, USA
| | - B T Teh
- Laboratory of Cancer Genetics, Van Andel Research Institute, Grand Rapids, MI, USA
| | - R V Thakker
- Academic Endocrine Unit, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), Radcliffe Department of Medicine, University of Oxford, Churchill Hospital, Oxford, UK
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5
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Nairismägi ML, Tan J, Lim JQ, Nagarajan S, Ng CCY, Rajasegaran V, Huang D, Lim WK, Laurensia Y, Wijaya GC, Li ZM, Cutcutache I, Pang WL, Thangaraju S, Ha J, Khoo LP, Chin ST, Dey S, Poore G, Tan LHC, Koh HKM, Sabai K, Rao HL, Chuah KL, Ho YH, Ng SB, Chuang SS, Zhang F, Liu YH, Pongpruttipan T, Ko YH, Cheah PL, Karim N, Chng WJ, Tang T, Tao M, Tay K, Farid M, Quek R, Rozen SG, Tan P, Teh BT, Lim ST, Tan SY, Ong CK. JAK-STAT and G-protein-coupled receptor signaling pathways are frequently altered in epitheliotropic intestinal T-cell lymphoma. Leukemia 2016; 30:1311-9. [PMID: 26854024 PMCID: PMC4895162 DOI: 10.1038/leu.2016.13] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 01/07/2016] [Accepted: 01/18/2016] [Indexed: 12/11/2022]
Abstract
Epitheliotropic intestinal T-cell lymphoma (EITL, also known as type II enteropathy-associated T-cell lymphoma) is an aggressive intestinal disease with poor prognosis and its molecular alterations have not been comprehensively characterized. We aimed to identify actionable easy-to-screen alterations that would allow better diagnostics and/or treatment of this deadly disease. By performing whole-exome sequencing of four EITL tumor-normal pairs, followed by amplicon deep sequencing of 42 tumor samples, frequent alterations of the JAK-STAT and G-protein-coupled receptor (GPCR) signaling pathways were discovered in a large portion of samples. Specifically, STAT5B was mutated in a remarkable 63% of cases, JAK3 in 35% and GNAI2 in 24%, with the majority occurring at known activating hotspots in key functional domains. Moreover, STAT5B locus carried copy-neutral loss of heterozygosity resulting in the duplication of the mutant copy, suggesting the importance of mutant STAT5B dosage for the development of EITL. Dysregulation of the JAK-STAT and GPCR pathways was also supported by gene expression profiling and further verified in patient tumor samples. In vitro overexpression of GNAI2 mutants led to the upregulation of pERK1/2, a member of MEK-ERK pathway. Notably, inhibitors of both JAK-STAT and MEK-ERK pathways effectively reduced viability of patient-derived primary EITL cells, indicating potential therapeutic strategies for this neoplasm with no effective treatment currently available.
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Affiliation(s)
- M-L Nairismägi
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - J Tan
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore.,Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - J Q Lim
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - S Nagarajan
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - C C Y Ng
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - V Rajasegaran
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - D Huang
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - W K Lim
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - Y Laurensia
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - G C Wijaya
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - Z M Li
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - I Cutcutache
- Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore.,Centre for Computational Biology, Duke-NUS Medical School, Singapore, Singapore
| | - W L Pang
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - S Thangaraju
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - J Ha
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - L P Khoo
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - S T Chin
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - S Dey
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - G Poore
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - L H C Tan
- Department of Pathology, Singapore General Hospital, Singapore, Singapore
| | - H K M Koh
- Advanced Molecular Pathology Laboratory, Singapore Health Services, Singapore, Singapore
| | - K Sabai
- Advanced Molecular Pathology Laboratory, Singapore Health Services, Singapore, Singapore
| | - H-L Rao
- Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - K L Chuah
- Department of Pathology, Tan Tock Seng Hospital, Singapore, Singapore
| | - Y-H Ho
- Department of Pathology, Tan Tock Seng Hospital, Singapore, Singapore
| | - S-B Ng
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore.,Department of Pathology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Department of Pathology, National University Hospital, National University Health System, Singapore, Singapore
| | - S-S Chuang
- Department of Pathology, Chi Mei Medical Center, Tainan, Taiwan.,Department of Pathology, Taipei Medical University and National Taiwan University, Taipei, Taiwan
| | - F Zhang
- Department of Pathology, Guangdong General Hospital, Guangzhou, China
| | - Y-H Liu
- Department of Pathology, Guangdong General Hospital, Guangzhou, China
| | - T Pongpruttipan
- Department of Pathology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Y H Ko
- Department of Pathology, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - P-L Cheah
- Department of Pathology, University of Malaya, Kuala Lumpur, Malaysia
| | - N Karim
- Department of Pathology, Hospital Raja Permaisuri Bainun, Ipoh, Malaysia
| | - W-J Chng
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore.,Department of Haematology-Oncology, National University Hospital, National University Health System, Singapore, Singapore
| | - T Tang
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - M Tao
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - K Tay
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - M Farid
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - R Quek
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - S G Rozen
- Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore.,Centre for Computational Biology, Duke-NUS Medical School, Singapore, Singapore
| | - P Tan
- Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore.,Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore.,Genome Institute of Singapore, A*STAR, Singapore, Singapore
| | - B T Teh
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore.,Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore.,Institute of Molecular and Cell Biology, A*STAR, Singapore, Singapore
| | - S T Lim
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore.,Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore.,Office of Education, Duke-NUS Medical School, Singapore, Singapore
| | - S-Y Tan
- Department of Pathology, Singapore General Hospital, Singapore, Singapore.,Department of Pathology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Department of Pathology, National University Hospital, National University Health System, Singapore, Singapore.,Department of Pathology, Guangdong General Hospital, Guangzhou, China.,Department of Pathology, University of Malaya, Kuala Lumpur, Malaysia.,Institute of Molecular and Cell Biology, A*STAR, Singapore, Singapore
| | - C K Ong
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
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6
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Kongpetch S, Puapairoj A, Ong CK, Senggunprai L, Prawan A, Kukongviriyapan U, Chan-On W, Siew EY, Khuntikeo N, Teh BT, Kukongviriyapan V. Haem oxygenase 1 expression is associated with prognosis in cholangiocarcinoma patients and with drug sensitivity in xenografted mice. Cell Prolif 2016; 49:90-101. [PMID: 26726846 DOI: 10.1111/cpr.12228] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Accepted: 08/21/2015] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE Haem oxygenase-1 (HO-1) plays important roles in cytoprotection and tumour growth. Cholangiocarcinoma (CCA) is a deadly malignancy with very poor prognosis. The role of HO-1 in tumour progression in CCA up to now has been relatively unexplored, thus, its possible therapeutic implications in CCA have been investigated here. MATERIALS AND METHODS HO-1 expression in tumour tissues from 50 CCA patients was determined by immunohistochemical analysis and its association with survival time was evaluated using the Kaplan-Meier method. Its role in CCA cells in vitro was evaluated by transwell and wound healing assays and suppression of HO-1 expression by siRNA. Effects of HO-1 inhibition on gemicitabine (GEM)-mediated tumour suppression was evaluated in nude mice xenografted with CCA cells. RESULTS HO-1 expression was inversely associated with median overall survival time. Hazard ratio of patients with high HO-1 expression was 2.42 (95% CI: 1.16-5.08) with reference to low expression and HO-1 knock-down expression inhibited transwell cell migration. Suppression of HO-1 by Zn-protoporphyrin (ZnPP) enhanced cytotoxicity to GEM in CCA cells, validated in CCA xenografts. Treatment with GEM and ZnPP almost completely arrested tumour growth, whereas treatment with only a single reagent, retarded it. Tumour inhibition was associated with reduction in expression of Ki-67 and microvascular density, and enhanced p53 and p21 immunohistochemical staining. CONCLUSION High HO-1 expression was associated with poor prognosis of CCA. Synergistic role of HO-1 inhibition in chemotherapy of CCA is a promising insight for treatment of this tumour and warrants further investigation.
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Affiliation(s)
- S Kongpetch
- Department of Pharmacology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Liver Fluke and Cholangiocarcinoma Research Center, Khon Kaen University, Khon Kaen, Thailand
| | - A Puapairoj
- Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - C K Ong
- Laboratory of Cancer Epigenome, National Cancer Centre of Singapore, Singapore.,Division of Cancer and Stem Cell Biology, Duke-National University of Singapore Graduate Medical School, Singapore
| | - L Senggunprai
- Department of Pharmacology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Liver Fluke and Cholangiocarcinoma Research Center, Khon Kaen University, Khon Kaen, Thailand
| | - A Prawan
- Department of Pharmacology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Liver Fluke and Cholangiocarcinoma Research Center, Khon Kaen University, Khon Kaen, Thailand
| | - U Kukongviriyapan
- Department of Physiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - W Chan-On
- Laboratory of Cancer Epigenome, National Cancer Centre of Singapore, Singapore
| | - E Y Siew
- Laboratory of Cancer Epigenome, National Cancer Centre of Singapore, Singapore.,Division of Cancer and Stem Cell Biology, Duke-National University of Singapore Graduate Medical School, Singapore
| | - N Khuntikeo
- Liver Fluke and Cholangiocarcinoma Research Center, Khon Kaen University, Khon Kaen, Thailand.,Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - B T Teh
- Laboratory of Cancer Epigenome, National Cancer Centre of Singapore, Singapore.,Division of Cancer and Stem Cell Biology, Duke-National University of Singapore Graduate Medical School, Singapore.,Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - V Kukongviriyapan
- Department of Pharmacology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Liver Fluke and Cholangiocarcinoma Research Center, Khon Kaen University, Khon Kaen, Thailand
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7
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Ho TH, Park IY, Zhao H, Tong P, Champion MD, Yan H, Monzon FA, Hoang A, Tamboli P, Parker AS, Joseph RW, Qiao W, Dykema K, Tannir NM, Castle EP, Nunez-Nateras R, Teh BT, Wang J, Walker CL, Hung MC, Jonasch E. High-resolution profiling of histone h3 lysine 36 trimethylation in metastatic renal cell carcinoma. Oncogene 2015; 35:1565-74. [PMID: 26073078 PMCID: PMC4679725 DOI: 10.1038/onc.2015.221] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 03/01/2015] [Accepted: 03/06/2015] [Indexed: 02/07/2023]
Abstract
Mutations in SETD2, a histone H3 lysine trimethyltransferase, have been identified in clear cell renal cell carcinoma (ccRCC); however it is unclear if loss of SETD2 function alters the genomic distribution of histone 3 lysine 36 trimethylation (H3K36me3) in ccRCC. Furthermore, published epigenomic profiles are not specific to H3K36me3 or metastatic tumors. To determine if progressive SETD2 and H3K36me3 dysregulation occurs in metastatic tumors, H3K36me3, SETD2 copy number (CN) or SETD2 mRNA abundance was assessed in two independent cohorts: metastatic ccRCC (n=71) and the Cancer Genome Atlas Kidney Renal Clear Cell Carcinoma data set (n=413). Although SETD2 CN loss occurs with high frequency (>90%), H3K36me3 is not significantly impacted by monoallelic loss of SETD2. H3K36me3-positive nuclei were reduced an average of ~20% in primary ccRCC (90% positive nuclei in uninvolved vs 70% positive nuclei in ccRCC) and reduced by ~60% in metastases (90% positive in uninvolved kidney vs 30% positive in metastases) (P<0.001). To define a kidney-specific H3K36me3 profile, we generated genome-wide H3K36me3 profiles from four cytoreductive nephrectomies and SETD2 isogenic renal cell carcinoma (RCC) cell lines using chromatin immunoprecipitation coupled with high-throughput DNA sequencing and RNA sequencing. SETD2 loss of methyltransferase activity leads to regional alterations of H3K36me3 associated with aberrant RNA splicing in a SETD2 mutant RCC and SETD2 knockout cell line. These data suggest that during progression of ccRCC, a decline in H3K36me3 is observed in distant metastases, and regional H3K36me3 alterations influence alternative splicing in ccRCC.
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Affiliation(s)
- T H Ho
- Division of Hematology and Medical Oncology, Mayo Clinic, Scottsdale, AZ, USA.,Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA
| | - I Y Park
- Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, TX, USA
| | - H Zhao
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - P Tong
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - M D Champion
- Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA.,Department of Biomedical Statistics and Informatics, Mayo Clinic, Scottsdale, AZ, USA
| | - H Yan
- Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA.,Department of Biomedical Statistics and Informatics, Rochester, MN, USA
| | - F A Monzon
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX, USA
| | - A Hoang
- Department of Genitourinary Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - P Tamboli
- Department of Pathology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - A S Parker
- Department of Health Sciences Research, Mayo Clinic, Jacksonville, FL, USA
| | - R W Joseph
- Division of Hematology and Medical Oncology, Mayo Clinic, Jacksonville, FL, USA
| | - W Qiao
- Division of Quantitative Sciences, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - K Dykema
- Center for Cancer Genomics and Computational Biology, Van Andel Institute, Grand Rapids, MI, USA
| | - N M Tannir
- Department of Genitourinary Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - E P Castle
- Department of Urology, Mayo Clinic, Scottsdale, AZ, USA
| | | | - B T Teh
- Center for Cancer Genomics and Computational Biology, Van Andel Institute, Grand Rapids, MI, USA
| | - J Wang
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - C L Walker
- Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, TX, USA
| | - M-C Hung
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Center for Molecular Medicine and Graduate Institute of Cancer Biology, China Medical University, Taichung, Taiwan
| | - E Jonasch
- Department of Genitourinary Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
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8
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Poon SL, Pang ST, McPherson JR, Yu W, Huang KK, Guan P, Weng WH, Siew EY, Liu Y, Heng HL, Chong SC, Gan A, Tay ST, Lim WK, Cutcutache I, Huang D, Ler LD, Nairismagi ML, Lee MH, Chang YH, Yu KJ, Chan-on W, Li BK, Yuan YF, Qian CN, Ng KF, Wu CF, Hsu CL, Bunte RM, Stratton MR, Futreal PA, Sung WK, Chuang CK, Ong CK, Rozen SG, Tan P, Teh BT. Genome-Wide Mutational Signatures of Aristolochic Acid and Its Application as a Screening Tool. Sci Transl Med 2013; 5:197ra101. [DOI: 10.1126/scitranslmed.3006086] [Citation(s) in RCA: 202] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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9
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Chusorn P, Namwat N, Loilome W, Techasen A, Pairojkul C, Khuntikeo N, Dechakhamphu A, Talabnin C, Chan-On W, Ong CK, Teh BT, Yongvanit P. Overexpression of microRNA-21 regulating PDCD4 during tumorigenesis of liver fluke-associated cholangiocarcinoma contributes to tumor growth and metastasis. Tumour Biol 2013; 34:1579-88. [PMID: 23417858 DOI: 10.1007/s13277-013-0688-0] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2012] [Accepted: 02/03/2013] [Indexed: 12/17/2022] Open
Abstract
MicroRNA, an endogenous noncoding RNA modulating gene expression, is a key molecule that by its dysregulation plays roles in inflammatory-driven carcinogenesis. This study aimed to investigate the role of oncomiR miR-21 and its target, the programmed cell death 4 (PDCD4) in tumor growth and metastasis of the liver fluke Opisthorchis viverrini-associated cholangiocarcinoma (CCA). The expression levels of miR-21 and PDCD4 were analyzed using the TaqMan miRNA expression assay and immunohistochemistry in liver tissues of both O. viverrini plus N-nitrosodimethylamine (NDMA)-treated hamsters and human CCA samples (n=23 cases). The functional assay for miR-21 was performed in CCA cell lines by the anti-miR-21 and pre-miR-21 transfection procedures. The peak of miR-21 levels were reached at 2 (hyperplastic lesions) and 6 (CCA) months of the O. viverrini plus NDMA-induced group and had a reverse response with its target PDCD4 proteins. In human CCA, miR-21 was overexpressed in tumor tissues when compared with nontumor tissues (P=0.0034) and had a negative correlation with PDCD4 protein (P=0.026). It was also found that high expression of miR-21 was significantly correlated with shorter survival (P<0.05) and lymph node metastasis (P=0.037) of CCA patients. Transient transfection of pre-miR-21 reduced the PDCD4 level and resulted in an increase of M213 CCA cell growth and wound-induced migration ability. These results indicated that miR-21 plays a role in the carcinogenesis and metastasis of O. viverrini-associated CCA by suppressing the function of PDCD4. Modulation of aberrantly expressed miR-21 may be a useful strategy to inhibit tumor cell phenotypes or improve response to chemotherapy.
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Affiliation(s)
- P Chusorn
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
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10
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Doroshow J, Liu ET, Pellini M, Miller V, Palmer G, Averbuch S, Green G, Novotny J, Paoletti P, Patel K, Hoos A, Gaynor R, Melemed S, Reinhard C, Teh BT, Hong WK, Kim E, Herbst R, Papadimitrakopoulou V, Gold K, Wistuba I, Lee J, Lippman S, Jackson JR, Zitvogel L, Meisel C, Workman P, Dalton WS, Botwood N, Davis BJ, Batist G, Assouline S, Camlioglu E, Tetu B, Spatz A, Diaz Z, Aguilar-Mahecha A, Basik M, Rodon J, Dienstmann R, Cortes J, Saura C, Aura C, Hernandez-Losa J, Vivancos A, Joan J, del Campo J, Felip E, Seoane J, Tabernero JT, Friend SH, Tsimberidou AM, Hong DS, Wheler JJ, Ye Y, Fu S, Piha-Paul SA, Naing A, Falchook GS, Janku F, Luthra R, Wen S, Kurzrock R, Naley M, Johnson P, Schuerer K, Lopes M, Hood LE, Yarden Y, Quackenbush J. Lectures. Ann Oncol 2012. [DOI: 10.1093/annonc/mds160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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11
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Teh BT, Varela I, Tarpey P, Raine K, Huang D, Ong CK, Furge KA, Campbell PJ, Stratton MR, Futreal PA. Identification of mutations of the SWI/SNF complex gene PBRM1 by exome sequencing in renal carcinoma. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.4571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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12
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Albiges L, Couturier J, Allory Y, Camparo P, Sibony M, Vieillefond A, Teh BT, Escudier BJ, Molinie V. Parafibromin as a new immunohistochemistry staining to improve pathologic diagnosis of renal oncocytoma: Analysis of 225 renal tumors. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.7_suppl.408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
408 Background: Chromophobe renal cell carcinoma (chRCC) and renal oncocytoma (Onc) are two distinct but closely related entities with strong morphologic and genetic similarities. While chRCC is a malignant tumor, Onc is usually considered as a benign entity. Recently, gene expression profiling applied on chRCC and Onc identified new potential markers that may effectively discriminate the 2 pathologic entities, including parafibromin. This work aims at evaluating the diagnostic value of Parafibromin (Pf) immuno staining on a large number of renal tumor samples. Methods: Sixty-three renal clear cell carcinoma (ccRCC), 47 papillary (Pap), 40 chRCC, and 75 Onc were immunostained for parafibromin antibody (1/200; Santacruz Biotechnology), on a tissue micro array. Results: Parafibromin was positive in 38.6% of Onc, vs 5% of chRCC (p < 0.001), with a 95% specificity, and the positive predictive value observed for parafibromin was 94%. For other tumor types, a positive staining for parafibromin was observed in 7.9% and 8.5% in ccRCC and Pap respectively. Conclusions: Parafibromin is a recently identified protein which seems to be specific for oncocytoma, and highly discriminant for other histologic renal cell tumor subtypes, especially for chromophobe. IHC may help to optimize therapeutics strategy for small renal mass and avoid surgical resection of benign lesions in some patients.Validation of this staining on renal tumor biopsies is on going.The value of the combination of this new immunostaining associated with the three standard IHC staining (CK7, CD117, E Cad) will be provided at the meeting. [Table: see text] No significant financial relationships to disclose.
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Affiliation(s)
- L. Albiges
- Medical Oncology Department, Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Hopital Henry Mondor, Creteil, France; Hopital Foch, Suresnes, France; Hopital Tenon, Paris, France; Hopital Cochin, Paris, France; Van Andel Research Institute, Grand Rapids, MI; Hospital Saint Joseph, Paris, France
| | - J. Couturier
- Medical Oncology Department, Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Hopital Henry Mondor, Creteil, France; Hopital Foch, Suresnes, France; Hopital Tenon, Paris, France; Hopital Cochin, Paris, France; Van Andel Research Institute, Grand Rapids, MI; Hospital Saint Joseph, Paris, France
| | - Y. Allory
- Medical Oncology Department, Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Hopital Henry Mondor, Creteil, France; Hopital Foch, Suresnes, France; Hopital Tenon, Paris, France; Hopital Cochin, Paris, France; Van Andel Research Institute, Grand Rapids, MI; Hospital Saint Joseph, Paris, France
| | - P. Camparo
- Medical Oncology Department, Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Hopital Henry Mondor, Creteil, France; Hopital Foch, Suresnes, France; Hopital Tenon, Paris, France; Hopital Cochin, Paris, France; Van Andel Research Institute, Grand Rapids, MI; Hospital Saint Joseph, Paris, France
| | - M. Sibony
- Medical Oncology Department, Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Hopital Henry Mondor, Creteil, France; Hopital Foch, Suresnes, France; Hopital Tenon, Paris, France; Hopital Cochin, Paris, France; Van Andel Research Institute, Grand Rapids, MI; Hospital Saint Joseph, Paris, France
| | - A. Vieillefond
- Medical Oncology Department, Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Hopital Henry Mondor, Creteil, France; Hopital Foch, Suresnes, France; Hopital Tenon, Paris, France; Hopital Cochin, Paris, France; Van Andel Research Institute, Grand Rapids, MI; Hospital Saint Joseph, Paris, France
| | - B. T. Teh
- Medical Oncology Department, Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Hopital Henry Mondor, Creteil, France; Hopital Foch, Suresnes, France; Hopital Tenon, Paris, France; Hopital Cochin, Paris, France; Van Andel Research Institute, Grand Rapids, MI; Hospital Saint Joseph, Paris, France
| | - B. J. Escudier
- Medical Oncology Department, Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Hopital Henry Mondor, Creteil, France; Hopital Foch, Suresnes, France; Hopital Tenon, Paris, France; Hopital Cochin, Paris, France; Van Andel Research Institute, Grand Rapids, MI; Hospital Saint Joseph, Paris, France
| | - V. Molinie
- Medical Oncology Department, Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Hopital Henry Mondor, Creteil, France; Hopital Foch, Suresnes, France; Hopital Tenon, Paris, France; Hopital Cochin, Paris, France; Van Andel Research Institute, Grand Rapids, MI; Hospital Saint Joseph, Paris, France
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13
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Teh BT, Huang D, Ding Y, Zhou M, Rini BI, Petillo D, Qian C, Kahnoski RJ, Futreal P, Furge KA. The mechanism of action and resistance of sunitinib in RCC. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e13606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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14
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Khoo SK, Pendek R, Nickolov R, Luccio-Camelo DC, Newton TL, Massie A, Petillo D, Menon J, Cameron D, Teh BT, Chan SP. Genome-wide scan identifies novel modifier loci of acromegalic phenotypes for isolated familial somatotropinoma. Endocr Relat Cancer 2009; 16:1057-63. [PMID: 19443539 DOI: 10.1677/erc-08-0287] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Isolated familial somatotropinoma (IFS) accounts for 18% of familial isolated pituitary adenoma (FIPA) cases. Recently, germline mutations of the aryl hydrocarbon receptor-interacting protein gene (AIP) have been found in families with pituitary adenoma predisposition, FIPA, and IFS. In this study, we investigate the AIP mutation status and perform a genome-wide scan to search for the modifier regions of acromegalic phenotypes in an IFS family of 31 aborigines from Borneo. Complete endocrine diagnosis and data could not be collected due to logistical and cultural reasons. AIP mutation screening was carried out by direct sequencing and the genome-wide scan was performed using 400 microsatellites. Non-parametric linkage analysis was performed to obtain the logarithm of odds (LOD) scores. A novel AIP frameshift mutation in exon 4 (c.500delC) (p.P167HfsX3) was identified in all members with acromegalic features, as well as in 15 members without acromegalic features, revealing incomplete penetrance of AIP. The data showed that patients with the same mutation may express acromegalic features of differing severity, suggesting the existence of modifier genes. The highest LOD score of 2.2 was obtained near D19S571 (19q13.41). We also found weak linkages on chromosomes 3q28, 8q12.1, and 21q22.13, with LOD scores of 1.1, 1.8, and 1.4 respectively. Our results show the first genome-wide scan that identifies novel modifier loci for acromegalic phenotypes in an IFS family. Identification of modifier loci may provide further insight into the disease mechanism and explain the clinical variability observed in its patients.
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Affiliation(s)
- S K Khoo
- Laboratory of Cancer Genetics, Van Andel Research Institute, Grand Rapids, Michigan 49503, USA.
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15
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Dotzenrath C, Goretzki PE, Farnebo F, Teh BT, Weber G, Röher HD, Larsson C. Molecular genetics of primary and secondary hyperparathyroidism. Exp Clin Endocrinol Diabetes 2009; 104 Suppl 4:105-7. [PMID: 8981014 DOI: 10.1055/s-0029-1211714] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Hyperparathyroidism (HPT) can be caused by solitary parathyroid adenomas and carcinomas, and primary and secondary multiglandular parathyroid disease. Primary HPT is also a feature of several hereditary diseases e.g. multiple endocrine neoplasia type 1 and type 2A (MEN1 and 2A), familial hypocalciuric hyperparathyroidism (FHH), the HPT-jaw tumor syndrome (HPT-JT), and familial isolated HPT. Summarizing data from the literature and our own observations, various genetic abnormalities are observed in the pathogenesis of HPT. These include chromosomal deletions of the MEN1 locus on 11q in sporadic and MEN1 associated primary HPT, of RB1 on 13q in carcinomas, and of the FHH gene located on 3q in sporadic primary and secondary HPT. Genetic material is also lost from chromosomes 1p, 6q, 15q and X suggesting loss of yet unidentified tumor suppressor genes in these regions. In addition the HRPT2 gene on 1q, as well as the proto-oncogenes RET on 10q and PRAD1 on 11q are associated with a subset of parathyroid tumors.
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Affiliation(s)
- C Dotzenrath
- Department of Surgery, Heinrich-Heine University, Düsseldorf, Germany
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16
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Haven CJ, van Puijenbroek M, Tan MH, Teh BT, Fleuren GJ, van Wezel T, Morreau H. Identification of MEN1 and HRPT2 somatic mutations in paraffin-embedded (sporadic) parathyroid carcinomas. Clin Endocrinol (Oxf) 2007; 67:370-6. [PMID: 17555500 DOI: 10.1111/j.1365-2265.2007.02894.x] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
OBJECTIVE Parathyroid carcinoma remains difficult to diagnose. Recently, it has been shown that mutations in the HRPT2 gene (encoding parafibromin) are associated with the development of parathyroid carcinoma. Although MEN1 is not typically thought to be involved in carcinoma formation, parathyroid carcinoma may be an extremely rare feature of the multiple endocrine neoplasia type 1 (MEN1) syndrome. We recently concluded that loss of heterozygosity (LOH) of the MEN1 gene is present in a relatively large number of parathyroid carcinomas, often in combination with LOH at the HRPT2 locus. The aim of this study was to evaluate the role of MEN1 and HRPT2 mutations in sporadic parathyroid tumours fulfilling histological criteria for malignancy. PATIENTS AND DESIGN Formalin-fixed, paraffin-embedded (FFPE) parathyroid carcinoma tissue from 28 cases identified in the period 1985-2000 in the Netherlands was studied. HRPT2 (27/28 cases) and MEN1 (23/28 cases) were analysed by direct sequencing. RESULTS Somatic MEN1 mutations were found in three of 23 (13%) sporadic parathyroid carcinoma cases; these consisted of one missense and two frameshift mutations. One of the latter two cases displayed lymph-node and lung metastases during follow-up. Six HRPT2 mutations were found in 4/27 cases (15%): five were truncating mutations and one was a missense mutation. Consistent with previously published reports, we found double mutations (2x) and germline mutations (2x) in apparently sporadic parathyroid carcinomas. CONCLUSIONS These results suggest that not only HRPT2 but also MEN1 mutations may play a role in sporadic parathyroid cancer formation.
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Affiliation(s)
- C J Haven
- Department of Pathology, Leiden University Medical Centre, The Netherlands
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17
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Abstract
5013 Background: Protein kinases are frequently mutated in human cancer and inhibitors of mutant protein kinases have proven to be effective anticancer drugs. In addition, expression levels of these protein kinases have also been associated with drug efficacy allowing prediction of drug response. Renal Cell Carcinoma (RCC) constitutes approximately 3% of all cancer incidence and deaths. Methods: We screened the coding sequences of 518 protein kinases (approximately 1.3 mb of DNA per sample) for somatic mutations in 69 kindey tumors of different subtypes. We also studied the expression of these kinases in 400 kidney tumors of different subtypes and prognosis by gene expression profiling using the Affymetrix HG-U133 Plus 2.0 GeneChip platform. The bioinformatic analysis is focused on the 518 protein kinases. Results: We identified 22 mutations (16 missense, 3 silent, 1 nonsense, 1 frameshift and 1 in-frame) in 16 samples. In expression profiling, we detected differential expression of protein kinases between different subtypes and between good- and poor- prognosis subgroups. Conclusions: This is the most comprehensive kinome profile in RCC known to date. The mutant protein kinases may play a role in the tumorigenesis of a subset of kidney cancer. These, together with over-expressed protein kinases, may serve as potential therapeutic targets and bio-markers for diagnosis, prognosis and drug response prediction. Other gene families may also be involved in RCC. No significant financial relationships to disclose.
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Affiliation(s)
- B. T. Teh
- Van Andel Research Institute, Grand Rapids, MI
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18
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Yang XJ, Takahashi M, Schafernak KT, Tretiakova MS, Sugimura J, Vogelzang NJ, Teh BT. Does 'granular cell' renal cell carcinoma exist? Molecular and histological reclassification. Histopathology 2007; 50:678-80. [PMID: 17394511 DOI: 10.1111/j.1365-2559.2007.02626.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Furge KA, Tan MH, Dykema K, Kort E, Stadler W, Yao X, Zhou M, Teh BT. Identification of deregulated oncogenic pathways in renal cell carcinoma: an integrated oncogenomic approach based on gene expression profiling. Oncogene 2007; 26:1346-50. [PMID: 17322920 DOI: 10.1038/sj.onc.1210256] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In this age of targeted therapy, identification of molecular pathways that are deregulated in cancer will not only elucidate underlying tumorigenic mechanisms, but may also help to determine the classes of drugs that are used for treatment. In kidney cancer, a spectrum of histological subtypes exists that are characterized both by distinct molecular signatures and increasingly by distinct molecular pathways that are deregulated in each subtype. For example, the VHL/hypoxia pathway is well-known to be deregulated in clear cell renal cell carcinoma (RCC) whereas in papillary RCC activation of the HGF/Met pathway has been implicated. Additional molecular pathways, many not yet identified, may also be involved in the development of the different histologic subtypes. Moreover, differences in pathway activation may reflect differences in tumor progression and response to treatment. In this article, we describe an oncogenomic approach, based on integrative analysis of gene expression profiling data. In this approach, gene expression data is used to identify both cytogenetic abnormalities and molecular pathways that are deregulated in RCC. Ideally, predicted pathway abnormalities can be linked to predicted cytogenetic abnormalities to identify likely candidate genes. Although further cellular and functional studies are warranted to validate the computational models, development of such models in RCC have the potential to open up new avenues of molecular research and may have significant diagnostic and therapeutic implications.
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Affiliation(s)
- K A Furge
- Laboratory of Computational Biology, Van Andel Research Institute, 333 Bostwick Avenue N.E., Grand Rapids, MI 49503, USA.
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20
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Affiliation(s)
- N S Duesbery
- Laboratory of Cancer and Developmental Cell Biology, Van Andel Research Institute, 333 Boostwick Avenue N.E., Grand Rapids, MI 49503, USA.
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21
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Gad S, Lefèvre SH, Khoo SK, Giraud S, Vieillefond A, Vasiliu V, Ferlicot S, Molinié V, Denoux Y, Thiounn N, Chrétien Y, Méjean A, Zerbib M, Benoît G, Hervé JM, Allègre G, Bressac-de Paillerets B, Teh BT, Richard S. Mutations in BHD and TP53 genes, but not in HNF1beta gene, in a large series of sporadic chromophobe renal cell carcinoma. Br J Cancer 2006; 96:336-40. [PMID: 17133269 PMCID: PMC2360004 DOI: 10.1038/sj.bjc.6603492] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BHD, TP53, and HNF1β on chromosome 17 were studied in 92 cases of renal cell carcinoma (46 chromophobe, 19 clear cell, 18 oncocytoma, and nine papillary). Six, thirteen, and zero cases had, respectively BHD, TP53, and HNF1β mutations, (84% mutations involved chromophobe), suggesting a role for BHD and TP53 in chromophobe subtype.
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Affiliation(s)
- S Gad
- Génétique Oncologique EPHE, CNRS FRE-2939, Institut de Cancérologie Gustave Roussy, 94800 Villejuif, France
- Faculté de Médecine Paris-Sud, 94270 Le Kremlin-Bicêtre, France
| | - S H Lefèvre
- Génétique Oncologique EPHE, CNRS FRE-2939, Institut de Cancérologie Gustave Roussy, 94800 Villejuif, France
- Faculté de Médecine Paris-Sud, 94270 Le Kremlin-Bicêtre, France
| | - S K Khoo
- Laboratory of Cancer Genetics, Van Andel Research Institute, Grand Rapids, MI 49503, USA
| | - S Giraud
- Laboratoire de Génétique, Hôpital Herriot, 69003 Lyon, France
| | - A Vieillefond
- Laboratoire d'Anatomie Pathologique, Hôpital Cochin, AP-HP, 75014 Paris, France
| | - V Vasiliu
- Laboratoire d'Anatomie Pathologique, Hôpital Necker, AP-HP, 75015 Paris, France
| | - S Ferlicot
- Laboratoire d'Anatomie Pathologique, Hôpital de Bicêtre, AP-HP, 94270 Le Kremlin-Bicêtre, France
| | - V Molinié
- Laboratoire d'Anatomie Pathologique, Hôpital Foch, 92150 Suresnes, France
| | - Y Denoux
- Laboratoire d'Anatomie Pathologique, Hôpital Foch, 92150 Suresnes, France
| | - N Thiounn
- Service d'Urologie, Hôpital Necker, AP-HP, 75015 Paris, France
| | - Y Chrétien
- Service d'Urologie, Hôpital Necker, AP-HP, 75015 Paris, France
| | - A Méjean
- Service d'Urologie, Hôpital Necker, AP-HP, 75015 Paris, France
| | - M Zerbib
- Service d'Urologie, Hôpital Cochin, AP-HP, 75014 Paris, France
| | - G Benoît
- Consultation d'Oncogénétique Spécialisée, Service d'Urologie, Hôpital de Bicêtre, AP-HP, 94270 Le Kremlin-Bicêtre, France
| | - J M Hervé
- Service d'Urologie, Hôpital Foch, 92150 Suresnes, France
| | - G Allègre
- Génétique Oncologique EPHE, CNRS FRE-2939, Institut de Cancérologie Gustave Roussy, 94800 Villejuif, France
- Faculté de Médecine Paris-Sud, 94270 Le Kremlin-Bicêtre, France
| | | | - B T Teh
- Laboratory of Cancer Genetics, Van Andel Research Institute, Grand Rapids, MI 49503, USA
| | - S Richard
- Génétique Oncologique EPHE, CNRS FRE-2939, Institut de Cancérologie Gustave Roussy, 94800 Villejuif, France
- Faculté de Médecine Paris-Sud, 94270 Le Kremlin-Bicêtre, France
- Consultation d'Oncogénétique Spécialisée, Service d'Urologie, Hôpital de Bicêtre, AP-HP, 94270 Le Kremlin-Bicêtre, France
- Génétique Oncologique EPHE, Faculté de Médecine Paris-Sud, 63 rue Gabriel Péri, 94270 Le Kremlin-Bicêtre, France. E-mail:
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22
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Warner JV, Nyholt DR, Busfield F, Epstein M, Burgess J, Stranks S, Hill P, Perry-Keene D, Learoyd D, Robinson B, Teh BT, Prins JB, Cardinal JW. Familial isolated hyperparathyroidism is linked to a 1.7 Mb region on chromosome 2p13.3-14. J Med Genet 2006; 43:e12. [PMID: 16525030 PMCID: PMC2563254 DOI: 10.1136/jmg.2005.035766] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Familial isolated hyperparathyroidism (FIHP) is an autosomal dominantly inherited form of primary hyperparathyroidism. Although comprising only about 1% of cases of primary hyperparathyroidism, identification and functional analysis of a causative gene for FIHP is likely to advance our understanding of parathyroid physiology and pathophysiology. METHODS A genome-wide screen of DNA from seven pedigrees with FIHP was undertaken in order to identify a region of genetic linkage with the disorder. RESULTS Multipoint linkage analysis identified a region of suggestive linkage (LOD score 2.68) on chromosome 2. Fine mapping with the addition of three other families revealed significant linkage adjacent to D2S2368 (maximum multipoint LOD score 3.43). Recombination events defined a 1.7 Mb region of linkage between D2S2368 and D2S358 in nine pedigrees. Sequencing of the two most likely candidate genes in this region, however, did not identify a gene for FIHP. CONCLUSIONS We conclude that a causative gene for FIHP lies within this interval on chromosome 2. This is a major step towards eventual precise identification of a gene for FIHP, likely to be a key component in the genetic regulation of calcium homeostasis.
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Teh BT, Yang XJ, Tan M, Kim HL, Stadler W, Vogelzang NG, Amato R, Figlin R, Belldegrun A, Rogers CG. Gene expression profiling identifies two distinct papillary renal cell carcinoma (RCC) subgroups of contrasting prognosis. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.4503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
4503 Background: Despite the moderate incidence of papillary renal cell carcinoma (PRCC), there is a disproportionately limited understanding of its underlying genetic programs. There is no effective therapy for metastatic PRCC, and patients are often excluded from kidney cancer trials. A morphological classification of PRCC into Type 1 and Type 2 tumors has been recently proposed, but its biological relevance remains uncertain. Methods: We studied the gene expression profiles of 34 cases of PRCC using Affymetrix HGU133 Plus 2.0 arrays (54,675 probe sets) using both unsupervised and supervised analysis. Comparative genomic microarray analysis (CGMA) was used to infer cytogenetic aberrations, and pathways were ranked with a curated database. Expression of selected genes was validated by immunohistochemistry in 34 samples, with 15 independent tumors. Results: We identified two highly distinct molecular PRCC subclasses with morphologic correlation. The first class, with excellent survival, corresponded to three histological subtypes: Type 1, low-grade Type 2 and mixed Type 1/low-grade Type 2 tumors. The second class, with poor survival, corresponded to high-grade Type 2 tumors (n = 11). Dysregulation of G1/S and G2/M checkpoint genes were found in Class 1 and Class 2 tumors respectively, alongside characteristic chromosomal aberrations. We identified a 7-transcript predictor that classified samples on cross-validation with 97% accuracy. Immunohistochemistry confirmed high expression of cytokeratin 7 in Class 1 tumors, and of topoisomerase IIα in Class 2 tumors. Conclusions: We report two molecular subclasses of PRCC, which are biologically and clinically distinct, which may be readily distinguished in a clinical setting. This may also have therapeutic implications. No significant financial relationships to disclose.
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Affiliation(s)
- B. T. Teh
- Van Andel Research Institute, Grand Rapids, MI; Feinberg School of Medicine, Chicago, IL; Alexandra Hospital, Singapore, Singapore; UCLA, Los Angeles, CA; University of Chicago, Chicago, IL; Baylor College of Medicine, Houston, TX; University of California, Los Angeles, CA; Johns Hopkins University, Baltimore, MD
| | - X. J. Yang
- Van Andel Research Institute, Grand Rapids, MI; Feinberg School of Medicine, Chicago, IL; Alexandra Hospital, Singapore, Singapore; UCLA, Los Angeles, CA; University of Chicago, Chicago, IL; Baylor College of Medicine, Houston, TX; University of California, Los Angeles, CA; Johns Hopkins University, Baltimore, MD
| | - M. Tan
- Van Andel Research Institute, Grand Rapids, MI; Feinberg School of Medicine, Chicago, IL; Alexandra Hospital, Singapore, Singapore; UCLA, Los Angeles, CA; University of Chicago, Chicago, IL; Baylor College of Medicine, Houston, TX; University of California, Los Angeles, CA; Johns Hopkins University, Baltimore, MD
| | - H. L. Kim
- Van Andel Research Institute, Grand Rapids, MI; Feinberg School of Medicine, Chicago, IL; Alexandra Hospital, Singapore, Singapore; UCLA, Los Angeles, CA; University of Chicago, Chicago, IL; Baylor College of Medicine, Houston, TX; University of California, Los Angeles, CA; Johns Hopkins University, Baltimore, MD
| | - W. Stadler
- Van Andel Research Institute, Grand Rapids, MI; Feinberg School of Medicine, Chicago, IL; Alexandra Hospital, Singapore, Singapore; UCLA, Los Angeles, CA; University of Chicago, Chicago, IL; Baylor College of Medicine, Houston, TX; University of California, Los Angeles, CA; Johns Hopkins University, Baltimore, MD
| | - N. G. Vogelzang
- Van Andel Research Institute, Grand Rapids, MI; Feinberg School of Medicine, Chicago, IL; Alexandra Hospital, Singapore, Singapore; UCLA, Los Angeles, CA; University of Chicago, Chicago, IL; Baylor College of Medicine, Houston, TX; University of California, Los Angeles, CA; Johns Hopkins University, Baltimore, MD
| | - R. Amato
- Van Andel Research Institute, Grand Rapids, MI; Feinberg School of Medicine, Chicago, IL; Alexandra Hospital, Singapore, Singapore; UCLA, Los Angeles, CA; University of Chicago, Chicago, IL; Baylor College of Medicine, Houston, TX; University of California, Los Angeles, CA; Johns Hopkins University, Baltimore, MD
| | - R. Figlin
- Van Andel Research Institute, Grand Rapids, MI; Feinberg School of Medicine, Chicago, IL; Alexandra Hospital, Singapore, Singapore; UCLA, Los Angeles, CA; University of Chicago, Chicago, IL; Baylor College of Medicine, Houston, TX; University of California, Los Angeles, CA; Johns Hopkins University, Baltimore, MD
| | - A. Belldegrun
- Van Andel Research Institute, Grand Rapids, MI; Feinberg School of Medicine, Chicago, IL; Alexandra Hospital, Singapore, Singapore; UCLA, Los Angeles, CA; University of Chicago, Chicago, IL; Baylor College of Medicine, Houston, TX; University of California, Los Angeles, CA; Johns Hopkins University, Baltimore, MD
| | - C. G. Rogers
- Van Andel Research Institute, Grand Rapids, MI; Feinberg School of Medicine, Chicago, IL; Alexandra Hospital, Singapore, Singapore; UCLA, Los Angeles, CA; University of Chicago, Chicago, IL; Baylor College of Medicine, Houston, TX; University of California, Los Angeles, CA; Johns Hopkins University, Baltimore, MD
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24
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Takahashi M, Yang XJ, McWhinney S, Sano N, Eng C, Kagawa S, Teh BT, Kanayama HO. cDNA microarray analysis assists in diagnosis of malignant intrarenal pheochromocytoma originally masquerading as a renal cell carcinoma. J Med Genet 2006; 42:e48. [PMID: 16061554 PMCID: PMC1736113 DOI: 10.1136/jmg.2005.031708] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Intrarenal pheochromocytoma (paraganglioma) is a very rare tumour. Its diagnosis is often difficult to establish because of its rarity and its histological similarity to renal cell carcinoma (RCC). Recently, we examined the molecular signatures of different subtypes of kidney tumours by using cDNA microarray. The signature pattern for one tumour, which was originally diagnosed as granular cell RCC, was clearly distinct from that of any other subtype of kidney tumour, and led us to re-evaluate the case. Haematoxylin and eosin staining revealed histological features suggestive of pheochromocytoma, and immunohistochemical studies showed positive staining for neuroendocrine markers but not for keratin. A germline missense mutation, D119E, in the familial paraganglioma related gene succinate dehydrogenase subunit D (SDHD), was subsequently identified. The treatment modality was revised and radiotherapy was given, to which the patient responded, leading to a reduction in tumour size of 25% within the first month. To our knowledge, this is the first report of an intrarenal pheochromocytoma that was diagnosed with the assistance of cDNA microarray analysis.
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Abstract
Thymic carcinoid is a rare multiple endocrine neoplasia type 1 (MEN1)-associated tumour that is a major cause of death in MEN1 patients. Here, we describe a previously unreported MEN1 family in which two siblings presented with malignant thymic carcinoids. All six siblings share a novel nonsense mutation Q395X on exon 8 of the MEN1 gene. The index patient developed a thymic carcinoid despite an earlier prophylactic transcervical thymectomy, and one other sibling had an incidental malignant thymic carcinoid discovered following prophylactic thymectomy, both cases demonstrating the weakness and strength of this surgical approach. We then review the spectrum of germline MEN1 mutations associated with thymic carcinoids to evaluate the possibility of a genotype-phenotype correlation. In the 22 separate MEN1 families with thymic carcinoids, all but two (91%) have mutations coding for a truncated protein. There is clearly a high prevalence of truncating mutations in MEN1-related thymic carcinoids although when compared with the prevalence of truncating mutations in all reported MEN1 mutations, it is not statistically significant (P = 0.39). Further studies are warranted to evaluate pathways of tumorigenesis of thymic carcinoids with regard to loss of function of menin.
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Affiliation(s)
- L C Lim
- Department of Medicine, Alexandra Hospital, Singapore
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26
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Cardinal JW, Bergman L, Hayward N, Sweet A, Warner J, Marks L, Learoyd D, Dwight T, Robinson B, Epstein M, Smith M, Teh BT, Cameron DP, Prins JB. A report of a national mutation testing service for the MEN1 gene: clinical presentations and implications for mutation testing. J Med Genet 2006; 42:69-74. [PMID: 15635078 PMCID: PMC1735899 DOI: 10.1136/jmg.2003.017319] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
INTRODUCTION Mutation testing for the MEN1 gene is a useful method to diagnose and predict individuals who either have or will develop multiple endocrine neoplasia type 1 (MEN 1). Clinical selection criteria to identify patients who should be tested are needed, as mutation analysis is costly and time consuming. This study is a report of an Australian national mutation testing service for the MEN1 gene from referred patients with classical MEN 1 and various MEN 1-like conditions. RESULTS All 55 MEN1 mutation positive patients had a family history of hyperparathyroidism, had hyperparathyroidism with one other MEN1 related tumour, or had hyperparathyroidism with multiglandular hyperplasia at a young age. We found 42 separate mutations and six recurring mutations from unrelated families, and evidence for a founder effect in five families with the same mutation. DISCUSSION Our results indicate that mutations in genes other than MEN1 may cause familial isolated hyperparathyroidism and familial isolated pituitary tumours. CONCLUSIONS We therefore suggest that routine germline MEN1 mutation testing of all cases of "classical" MEN1, familial hyperparathyroidism, and sporadic hyperparathyroidism with one other MEN1 related condition is justified by national testing services. We do not recommend routine sequencing of the promoter region between nucleotides 1234 and 1758 (Genbank accession no. U93237) as we could not detect any sequence variations within this region in any familial or sporadic cases of MEN1 related conditions lacking a MEN1 mutation. We also suggest that testing be considered for patients <30 years old with sporadic hyperparathyroidism and multigland hyperplasia.
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Affiliation(s)
- J W Cardinal
- Department of Diabetes and Endocrinology, Princess Alexandra Hospital, Ipswich Rd, Woolloongabba, Brisbane 4102, Australia.
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27
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Abstract
In contrast to primary hyperparathyroidism, parathyroid carcinoma is a rare disease. In patients with hyperparathyroidism jaw tumor (HPT-JT) syndrome, caused by germline mutations in HRPT2, the development of parathyroid carcinoma is estimated to be 10-15%. This review summarizes the clinical and molecular genetic data of about 100 patients in the literature and three of our own cases. Unfortunately, osteofibromas, which might enable timely diagnosis of HPT-JT syndrome, occur in only about 30% of patients; about 80% have uniglandular disease. Based on the current data, a general recommendation to perform prophylactic parathyroidectomy cannot be given. However, thorough screening of patients at risk is mandatory. Of note in patients thought to have sporadic parathyroid carcinoma, germline HRPT2 mutations are found in up to 20%. Hence, any patient with parathyroid carcinoma should undergo HRPT2 mutation analysis.
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Affiliation(s)
- O Gimm
- Klinik für Allgemein-, Viszeral- und Gefässchirurgie, Martin-Luther-Universität Halle-Wittenberg.
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28
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Affiliation(s)
- M.-H. Tan
- Van Andel Research Institute, Grand Rapids, MI
| | - B. T. Teh
- Van Andel Research Institute, Grand Rapids, MI
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29
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Abstract
Hyperparathyroidism-jaw tumor (HPT-JT) syndrome is a familial multi-tumor syndrome resulting from inactivating mutations in the HRPT2 tumor suppressor gene, which encodes a protein product named parafibromin. Here, we will review recent advances in genetic and protein studies on parafibromin, and examine its biological functions.
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Affiliation(s)
- P F Wang
- Laboratory of Cancer Genetics, Van Andel Research Institute, 333 Bostwick Avenue NE, Grand Rapids, MI 49503, USA
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30
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Abstract
Hyperparathyroidism-jaw tumor (HPT-JT) syndrome is a familial multi-tumor syndrome resulting from mutations in the HRPT2 tumor suppressor gene, which encodes a protein product named parafibromin. We review current knowledge of the renal manifestations of the HPT-JT syndrome, and examine recent advances in understanding the biological function of parafibromin.
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Affiliation(s)
- M H Tan
- Laboratory of Cancer Genetics, Van Andel Research Institute, Grand Rapids, MI 49503, USA
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31
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Warner J, Epstein M, Sweet A, Singh D, Burgess J, Stranks S, Hill P, Perry-Keene D, Learoyd D, Robinson B, Birdsey P, Mackenzie E, Teh BT, Prins JB, Cardinal J. Genetic testing in familial isolated hyperparathyroidism: unexpected results and their implications. J Med Genet 2004; 41:155-60. [PMID: 14985373 PMCID: PMC1735699 DOI: 10.1136/jmg.2003.016725] [Citation(s) in RCA: 131] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Familial hyperparathyroidism is not uncommon in clinical endocrine practice. It encompasses a spectrum of disorders including multiple endocrine neoplasia types 1 (MEN1) and 2A, hyperparathyroidism-jaw tumour syndrome (HPT-JT), familial hypocalciuric hypercalcaemia (FHH), and familial isolated hyperparathyroidism (FIHP). Distinguishing among the five syndromes is often difficult but has profound implications for the management of patient and family. The availability of specific genetic testing for four of the syndromes has improved diagnostic accuracy and simplified family monitoring in many cases but its current cost and limited accessibility require rationalisation of its use. No gene has yet been associated exclusively with FIHP. FIHP phenotypes have been associated with mutant MEN1 and calcium-sensing receptor (CASR) genotypes and, very recently, with mutation in the newly identified HRPT2 gene. The relative proportions of these are not yet clear. We report results of MEN1, CASR, and HRPT2 genotyping of 22 unrelated subjects with FIHP phenotypes. We found 5 (23%) with MEN1 mutations, four (18%) with CASR mutations, and none with an HRPT2 mutation. All those with mutations had multiglandular hyperparathyroidism. Of the subjects with CASR mutations, none were of the typical FHH phenotype. These findings strongly favour a recommendation for MEN1 and CASR genotyping of patients with multiglandular FIHP, irrespective of urinary calcium excretion. However, it appears that HRPT2 genotyping should be reserved for cases in which other features of the HPT-JT phenotype have occurred in the kindred. Also apparent is the need for further investigation to identify additional genes associated with FIHP.
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Affiliation(s)
- J Warner
- Department of Diabetes and Endocrinology, Princess Alexandra Hospital, Ipswich Rd, Woolloongabba 4102, Qld, Australia
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Schoumans J, Anderlid BM, Blennow E, Teh BT, Nordenskjöld M. The performance of CGH array for the detection of cryptic constitutional chromosome imbalances. J Med Genet 2004; 41:198-202. [PMID: 14985382 PMCID: PMC1735686 DOI: 10.1136/jmg.2003.013920] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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33
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Villablanca A, Calender A, Forsberg L, Höög A, Cheng JD, Petillo D, Bauters C, Kahnoski K, Ebeling T, Salmela P, Richardson AL, Delbridge L, Meyrier A, Proye C, Carpten JD, Teh BT, Robinson BG, Larsson C. Germline and de novo mutations in the HRPT2 tumour suppressor gene in familial isolated hyperparathyroidism (FIHP). J Med Genet 2004; 41:e32. [PMID: 14985403 PMCID: PMC1735713 DOI: 10.1136/jmg.2003.012369] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- A Villablanca
- Department of Molecular Medicine, Karolinska Hospital, Stockholm, Sweden.
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Gray SG, Qian CN, Furge K, Guo X, Teh BT. Microarray profiling of the effects of histone deacetylase inhibitors on gene expression in cancer cell lines. Int J Oncol 2004; 24:773-95. [PMID: 15010814 DOI: 10.3892/ijo.24.4.773] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Chromatin is a highly dynamic environment playing critical roles in the regulation of gene expression. Modifications to the proteins which make up the nucleosome core have been shown to have profound regulatory effects on gene expression. Of these, the best known modification is acetylation of the histone tails. Two enzymes regulate these processes, histone deacetylases and histone acetyltransferases. Both have been shown to have dysregulated functions in certain tumors. Several classes of histone deacetylase inhibitors have been isolated and are currently undergoing evaluation as potential therapeutic modalities in the treatment of cancer. In this study we examined the effects of three such inhibitors on general gene expression in three tumor cell lines derived from three separate tumor types using microarray gene profiling. Our results show that the patterns of alterations which emerge are similar for each cell type.
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Affiliation(s)
- S G Gray
- Laboratory for Cancer Genetics, Van Andel Research Institute, Grand Rapids, MI 49503, USA
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35
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Abstract
Epidemiological studies over the past several decades have consistently supported the concept that a proportion of breast cancers develop as the result of an inherited familial predisposition. However, until recently our understanding and knowledge of the underlying genetic processes involved have been limited. Current advances in molecular biology have shown that hereditary breast cancer may arise as the result of mutations of several specific gene loci including BRCA1, BRCA2, ATM gene, PTEN and p53. Several other less frequently occurring predisposition genes such as the androgen receptor gene (AR), the HNPCC genes and the oestrogen receptor gene may also be involved, but to a lesser extent. It is estimated that approximately 5-10% of all breast cancers involve one of these inherited predisposition genes, with BRCA1 and BRCA2 accounting for up to 90% of this group. Mutation analysis is complex in nature and is presently in a developmental and evolving phase, for which reason genetic testing should be offered on a selective basis and through genetic counselling clinics. This report reviews the current knowledge and roles of the various predisposition genes and discusses the management implications for both affected and nonaffected members of breast cancer families. Comprehensive and informative counselling is critical for women with an inherited predisposition to breast cancer and this has led to the evolution of familial cancer clinics involving a multi-disciplinary specialist team approach. Familial cancer clinics can provide individuals with information about their risk of developing breast cancer and offer advice regarding the various management options presently available.
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Affiliation(s)
- I C Bennett
- Department of Surgery, Princess Alexandra Hospital, Brisbane and University of Queensland, Herston, Brisbane, Australia
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36
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Teh BT, Howell VM, Haven CJ, Kahnoski K, Khoo SK, Petillo D, Chen J, Fleuren GJ, Robinson BG, Delbridge LW, Philips J, Nelson AE, Krause U, Hammje K, Dralle H, Hoang-Vu C, Gimm O, Marsh DJ, Morreau H. Human gene mutations. Gene symbol: HRPT2. Disease: Hyperparathyroidism Jaw-tumor syndrome. Hum Genet 2004; 114:222. [PMID: 15046094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- B T Teh
- Laboratory of Cancer Genetics, Van Andel Research Institute, 333 Bostwick NE, Grand Rapids, MI 49503, USA.
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Teh BT, Howell VM, Haven CJ, Kahnoski K, Khoo SK, Petillo D, Chen J, Fleuren GJ, Robinson BG, Delbridge LW, Philips J, Nelson AE, Krause U, Hammje K, Dralle H, Hoang-Vu C, Gimm O, Marsh DJ, Morreau H. Human gene mutations. Gene symbol: HRPT2. Disease: Hyperparathyroidism Jaw-tumor syndrome. Hum Genet 2004; 114:221. [PMID: 15046050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- B T Teh
- Laboratory of Cancer Genetics, Van Andel Research Institute, 333 Bostwick NE, Grand Rapids, MI 49503, USA.
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Teh BT, Howell VM, Haven CJ, Kahnoski K, Khoo SK, Petillo D, Chen J, Fleuren GJ, Robinson BG, Delbridge LW, Philips J, Nelson AE, Krause U, Hammje K, Dralle H, Hoang-Vu C, Gimm O, Marsh DJ, Morreau H. Human gene mutations. Gene symbol: HRPT2. Disease: Hyperparathyroidism Jaw-tumor syndrome. Hum Genet 2004; 114:224. [PMID: 15046109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- B T Teh
- Laboratory of Cancer Genetics, Van Andel Research Institute, 333 Bostwick NE, Grand Rapids, MI 49503, USA.
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Teh BT, Howell VM, Haven CJ, Kahnoski K, Khoo SK, Petillo D, Chen J, Fleuren GJ, Robinson BG, Delbridge LW, Philips J, Nelson AE, Krause U, Hammje K, Dralle H, Hoang-Vu C, Gimm O, Marsh DJ, Morreau H. Human gene mutations. Gene symbol: HRPT2. Disease: Hyperparathyroidism Jaw-tumor syndrome. Hum Genet 2004; 114:223. [PMID: 15046105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- B T Teh
- Laboratory of Cancer Genetics, Van Andel Research Institute, 333 Bostwick NE, Grand Rapids, MI 49503, USA.
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Teh BT, Howell VM, Haven CJ, Kahnoski K, Khoo SK, Petillo D, Chen J, Fleuren GJ, Robinson BG, Delbridge LW, Philips J, Nelson AE, Krause U, Hammje K, Dralle H, Hoang-Vu C, Gimm O, Marsh DJ, Morreau H. Human gene mutations. Gene symbol: HRPT2. Disease: Hyperparathyroidism Jaw-tumor syndrome. Hum Genet 2004; 114:223. [PMID: 15046102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- B T Teh
- Laboratory of Cancer Genetics, Van Andel Research Institute, 333 Bostwick NE, Grand Rapids, MI 49503, USA.
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Teh BT, Howell VM, Haven CJ, Kahnoski K, Khoo SK, Petillo D, Chen J, Fleuren GJ, Robinson BG, Delbridge LW, Philips J, Nelson AE, Krause U, Hammje K, Dralle H, Hoang-Vu C, Gimm O, Marsh DJ, Morreau H. Human gene mutations. Gene symbol: HRPT2. Disease: Hyperparathyroidism Jaw-tumor syndrome. Hum Genet 2004; 114:223. [PMID: 15046107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- B T Teh
- Laboratory of Cancer Genetics, Van Andel Research Institute, 333 Bostwick NE, Grand Rapids, MI 49503, USA.
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Teh BT, Howell VM, Haven CJ, Kahnoski K, Khoo SK, Petillo D, Chen J, Fleuren GJ, Robinson BG, Delbridge LW, Philips J, Nelson AE, Krause U, Hammje K, Dralle H, Hoang-Vu C, Gimm O, Marsh DJ, Morreau H. Human gene mutations. Gene symbol: HRPT2. Disease: Hyperparathyroidism Jaw-tumor syndrome. Hum Genet 2004; 114:222. [PMID: 15046098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- B T Teh
- Laboratory of Cancer Genetics, Van Andel Research Institute, 333 Bostwick NE, Grand Rapids, MI 49503, USA.
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Abstract
A 27-yr-old lady with a past history of prolonged ventilation presented with worsening respiratory distress caused by tracheal stenosis. She required urgent tracheal resection and reconstruction. Because of the risk of an acute respiratory obstruction, spinal anaesthesia was used to establish cardiopulmonary bypass by cannulating the femoral artery and femoral vein. Adequate gas exchange was possible with full flow rate. Thoracotomy was then carried out to mobilize the left main bronchus. After successfully securing an airway by intubation of the left main bronchus, cardiopulmonary bypass was discontinued and tracheal resection and anastomosis was done under conventional one lung anaesthesia.
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Affiliation(s)
- C L Chiu
- Department of Anaesthesia, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Howell VM, Haven CJ, Kahnoski K, Khoo SK, Petillo D, Chen J, Fleuren GJ, Robinson BG, Delbridge LW, Philips J, Nelson AE, Krause U, Hammje K, Dralle H, Hoang-Vu C, Gimm O, Marsh DJ, Morreau H, Teh BT. HRPT2 mutations are associated with malignancy in sporadic parathyroid tumours. J Med Genet 2003; 40:657-63. [PMID: 12960210 PMCID: PMC1735580 DOI: 10.1136/jmg.40.9.657] [Citation(s) in RCA: 284] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND Hyperparathyroidism is a common endocrinopathy characterised by the formation of parathyroid tumours. In this study, we determine the role of the recently identified gene, HRPT2, in parathyroid tumorigenesis. METHODS Mutation analysis of HRPT2 was undertaken in 60 parathyroid tumours: five HPT-JT, three FIHP, three MEN 1, one MEN 2A, 25 sporadic adenomas, 17 hyperplastic glands, two lithium associated tumours, and four sporadic carcinomas. Loss of heterozygosity at 1q24-32 was performed on a subset of these tumours. RESULTS HRPT2 somatic mutations were detected in four of four sporadic parathyroid carcinoma samples, and germline mutations were found in five of five HPT-JT parathyroid tumours (two families) and two parathyroid tumours from one FIHP family. One HPT-JT tumour with germline mutation also harboured a somatic mutation. In total, seven novel and one previously reported mutation were identified. "Two-hits" (double mutations or one mutation and loss of heterozygosity at 1q24-32) affecting HRPT2 were found in two sporadic carcinomas, two HPT-JT-related and two FIHP related tumours. CONCLUSIONS The results in this study support the role of HRPT2 as a tumour suppressor gene in sporadic parathyroid carcinoma, and provide further evidence for HRPT2 as the causative gene in HPT-JT, and a subset of FIHP. In light of the strong association between mutations of HRPT2 and sporadic parathyroid carcinoma demonstrated in this study, it is hypothesised that HRPT2 mutation is an early event that may lead to parathyroid malignancy and suggest intragenic mutation of HRPT2 as a marker of malignant potential in both familial and sporadic parathyroid tumours.
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Affiliation(s)
- V M Howell
- Laboratory of Cancer Genetics, Van Andel Research Institute, 333 Bostwick NE, Grand Rapids, Michigan 49503, USA
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Kahnoski K, Khoo SK, Nassif NT, Chen J, Lobo GP, Segelov E, Teh BT. Alterations of the Birt-Hogg-Dubé gene (BHD) in sporadic colorectal tumours. J Med Genet 2003; 40:511-5. [PMID: 12843323 PMCID: PMC1735520 DOI: 10.1136/jmg.40.7.511] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Tso AWK, Rong R, Lo CY, Tan KCB, Tiu SC, Wat NMS, Xu JY, Villablanca A, Larsson C, Teh BT, Lam KSL. Multiple endocrine neoplasia type 1 (MEN1): genetic and clinical analysis in the Southern Chinese. Clin Endocrinol (Oxf) 2003; 59:129-35. [PMID: 12807514 DOI: 10.1046/j.1365-2265.2003.01812.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE Multiple endocrine neoplasia type 1 (MEN1) is characterized by a triad of neoplasia affecting the parathyroid glands, enteropancreatic endocrine tissue and the anterior pituitary gland. DESIGN In order to define the prevalence of MEN1 germ-line mutations in Southern Chinese patients with MEN1 syndrome, we performed direct sequencing of the entire open reading frame of the MEN1 gene for 12 index patients and their first-degree relatives. RESULTS Six patients had familial MEN1 syndrome and six had apparently sporadic disease. Nine different germ-line mutations at the MEN1 gene were identified, including three novel mutations [248-249delTT in exon 2, K559X(AAG --> TAG) in exon 10 and IVS 2nt + 2(G --> T) in intron 2]. All patients with familial MEN1 syndrome were heterozygous carriers of a germ-line mutation and MEN1-related disorders were only evident in their first-degree relatives who also carried the mutation. All patients with an enteropancreatic lesion were mutation carriers and the absence of mutation in three apparently sporadic MEN1 patients with only hyperparathyroidism and pituitary microadenoma might represent the presence of MEN1 phenocopy. CONCLUSIONS The finding of MEN1 germ-line mutation in all patients with familial MEN1 syndrome suggests that genetic screening should be useful in our population to identify affected individuals within a kindred and allow early detection of MEN1-related tumours.
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Affiliation(s)
- A W K Tso
- Department of Medicine, University of Hong Kong, and Department of Medicine, Queen Elizabeth Hospital, Hong Kong
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Abstract
Amongst hyperparathyroidism-related syndromes, hyperparathyroidism-jaw tumour syndrome is one of the least common and relatively unknown but its clinical and genetic aspects are not less interesting or important. With the recent identification of its genes, we can now better characterize the disease, both clinically and genetically, which will certainly impact the field of endocrinology and oncology. In this article, we review the clinico-pathological features and genetic basis of this syndrome with the hope that it will create awareness and interest in this disease amongst clinicians and basic scientists.
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Affiliation(s)
- J D Chen
- Laboratory of Cancer Genetics, Van Andel Research Institute, Grand Rapids, MI 49503, USA
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48
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Affiliation(s)
- B T Teh
- Laboratory of Cancer Genetics, Van Andel Research Institute, Grand Rapids, MI 49503, USA.
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49
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Abstract
Multiple endocrine neoplasia type 1 is an autosomal dominant cancer syndrome affecting primarily parathyroid, enteropancreatic endocrine and pituitary tissues. The inactivating germline and somatic mutations spread throughout the gene and the accompanying loss of the second allele in tumours show that the MEN1 gene is a tumour suppressor. The MEN1-encoded protein, menin, is a novel nuclear protein. Menin binds and alters JunD-, NF-kappaB-, Smad3-mediated transcriptional activation. The mouse Men1 knockout model mimicks the human MEN1 condition contributing to the understanding of tumorigenesis in MEN1.
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Affiliation(s)
- S C Chandrasekharappa
- Genome Technology Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
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Gray SG, Iglesias AH, Teh BT, Dangond F. Modulation of splicing events in histone deacetylase 3 by various extracellular and signal transduction pathways. Gene Expr 2003; 11:13-21. [PMID: 12691522 PMCID: PMC5991154 DOI: 10.3727/000000003783992342] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/16/2002] [Indexed: 11/24/2022]
Abstract
Within the context of the chromatin environment histone deacetylases are important transcriptional regulators. Three classes of human histone deacetylases have currently been identified on the basis of their similarity to yeast proteins. The class I enzymes contain four members: HDACs 1-3 and HDAC8. Of these, HDAC3 is known to generate transcript variants with altered amino-terminal regions. Here we describe the identification of a novel splice variant of HDAC3, in which exon 3 is alternatively spliced from the messenger RNA transcript. We show that this human HDAC3 splice transcript is upregulated by treatments with histone deacetylase inhibitors. We also demonstrate evidence of splicing events in murine HDAC3 as a response to various signals, including switching between splice transcript isoforms following treatments with kinase inhibitors or by osmotic shock. In contrast, such switching events were not observed in human cells. These results indicate that differential pathways in mouse and human may control the regulation of HDAC3, and that splice variants may play important roles in responding to exogenous stimuli that act via signal transduction pathways.
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Affiliation(s)
- S. G. Gray
- *Van Andel Research Institute, Laboratory for Cancer Research, 333 Bostwick NE, Grand Rapids, MI 49503
| | - A. H. Iglesias
- †Laboratory of Transcriptional and Immune Regulation, Center for Neurologic Diseases, Brigham and Women’s Hospital Laboratories, 65 Landsdowne Street, Cambridge, MA 02139
| | - B. T. Teh
- *Van Andel Research Institute, Laboratory for Cancer Research, 333 Bostwick NE, Grand Rapids, MI 49503
| | - F. Dangond
- †Laboratory of Transcriptional and Immune Regulation, Center for Neurologic Diseases, Brigham and Women’s Hospital Laboratories, 65 Landsdowne Street, Cambridge, MA 02139
- Address correspondence to F. Dangond, Laboratory of Transcriptional and Immune Regulation, Center for Neurologic Diseases, Brigham and Women’s Hospital Laboratories, 65 Landsdowne Street, 3rd Floor, Cambridge, MA 02139. Tel: (617) 768-8591; Fax: (617) 768-8595; E-mail:
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