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Rüchel N, Jepsen VH, Hein D, Fischer U, Borkhardt A, Gössling KL. In Utero Development and Immunosurveillance of B Cell Acute Lymphoblastic Leukemia. Curr Treat Options Oncol 2022. [PMID: 35294722 DOI: 10.1007/s11864-022-00963-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2022] [Indexed: 11/06/2022]
Abstract
Acute lymphoblastic leukemia (ALL) is the most frequent type of pediatric cancer with a peak incidence at 2–5 years of age. ALL frequently begins in utero with the emergence of clinically silent, preleukemic cells. Underlying leukemia-predisposing germline and acquired somatic mutations define distinct ALL subtypes that vary dramatically in treatment outcomes. In addition to genetic predisposition, a second hit, which usually occurs postnatally, is required for development of overt leukemia in most ALL subtypes. An untrained, dysregulated immune response, possibly due to an abnormal response to infection, may be an important co-factor triggering the onset of leukemia. Furthermore, the involvement of natural killer (NK) cells and T helper (Th) cells in controlling the preleukemic cells has been discussed. Identifying the cell of origin of the preleukemia-initiating event might give additional insights into potential options for prevention. Modulation of the immune system to achieve prolonged immunosurveillance of the preleukemic clone that eventually dies out in later years might present a future directive. Herein, we review the concepts of prenatal origin as well as potential preventive approaches to pediatric B cell precursor (BCP) ALL.
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2
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Chen D, Camponeschi A, Nordlund J, Marincevic‐Zuniga Y, Abrahamsson J, Lönnerholm G, Fogelstrand L, Mårtensson I. RAG1 co-expression signature identifies ETV6-RUNX1-like B-cell precursor acute lymphoblastic leukemia in children. Cancer Med 2021; 10:3997-4003. [PMID: 33987955 PMCID: PMC8209579 DOI: 10.1002/cam4.3928] [Citation(s) in RCA: 0] [Impact Index Per Article: 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] [Received: 10/27/2020] [Revised: 03/15/2021] [Accepted: 04/06/2021] [Indexed: 12/05/2022] Open
Abstract
B-cell precursor acute lymphoblastic leukemia (BCP-ALL) can be classified into subtypes according to the genetic aberrations they display. For instance, the translocation t(12;21)(p13;q22), representing the ETV6-RUNX1 fusion gene (ER), is present in a quarter of BCP-ALL cases. However, around 10% of the cases lack classifying chromosomal abnormalities (B-other). In pediatric ER BCP-ALL, rearrangement mediated by RAG (recombination-activating genes) has been proposed as the predominant driver of oncogenic rearrangement. Herein we analyzed almost 1600 pediatric BCP-ALL samples to determine which subtypes express RAG. We demonstrate that RAG1 mRNA levels are especially high in the ETV6-RUNX1 (ER) subtype and in a subset of B-other samples. We also define 31 genes that are co-expressed with RAG1 (RAG1-signature) in the ER subtype, a signature that also identifies this subset of B-other samples. Moreover, this subset also shares leukemia and pro-B gene expression signatures as well as high levels of the ETV6 target genes (BIRC7, WBP1L, CLIC5, ANGPTL2) with the ER subtype, indicating that these B-other cases are the recently identified ER-like subtype. We validated our results in a cohort where ER-like has been defined, which confirmed expression of the RAG1-signature in this recently described subtype. Taken together, our results demonstrate that the RAG1-signature identifies the ER-like subtype. As there are no definitive genetic markers to identify this novel subtype, the RAG1-signature represents a means to screen for this leukemia in children.
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Affiliation(s)
- Dongfeng Chen
- Institute of Life SciencesJiangsu UniversityZhenjiangChina
- Department of Rheumatology and Inflammation ResearchInstitute of MedicineSahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Alessandro Camponeschi
- Department of Rheumatology and Inflammation ResearchInstitute of MedicineSahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Jessica Nordlund
- Department of Medical SciencesMolecular Medicine and Science for Life LaboratoryUppsala UniversityUppsalaSweden
| | - Yanara Marincevic‐Zuniga
- Department of Medical SciencesMolecular Medicine and Science for Life LaboratoryUppsala UniversityUppsalaSweden
| | - Jonas Abrahamsson
- Department of PediatricsInstitute of Clinical SciencesSahlgrenska University HospitalGothenburgSweden
| | - Gudmar Lönnerholm
- Department of Women and Children’s HealthUppsala UniversityUppsalaSweden
| | - Linda Fogelstrand
- Department of Clinical ChemistrySahlgrenska University HospitalGothenburgSweden
- Department of Clinical Chemistry and Transfusion MedicineUniversity of GothenburgGothenburgSweden
| | - Inga‐Lill Mårtensson
- Department of Rheumatology and Inflammation ResearchInstitute of MedicineSahlgrenska AcademyUniversity of GothenburgGothenburgSweden
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3
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Lee JW, Kim S, Jang PS, Chung NG, Cho B. Differing Outcomes of Patients with High Hyperdiploidy and ETV6-RUNX1 Rearrangement in Korean Pediatric Precursor B Cell Acute Lymphoblastic Leukemia. Cancer Res Treat 2020; 53:567-575. [PMID: 33070555 PMCID: PMC8053883 DOI: 10.4143/crt.2020.507] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 10/08/2020] [Indexed: 11/21/2022] Open
Abstract
Purpose: Recent cooperative trials in pediatric acute lymphoblastic leukemia (ALL) report long-term event-free survival (EFS) of greater than 80%. In this study, we analyzed the outcome and prognostic factors for patients with precursor B cell ALL (n=405) diagnosed during a 10-year period (2005–2015) at our institution. Materials and Methods All patients were treated with a uniform institutional regimen based on four risk groups, except for steroid type; patients diagnosed up till 2008 receiving dexamethasone, while subsequent patients received prednisolone. None of the patients received cranial irradiation in first complete remission. Results The 10-year EFS and overall survival was 76.3%±2.3% and 85.1%±1.9%. Ten-year cumulative incidence of relapse, any central nervous system (CNS) relapse and isolated CNS relapse was 20.8%±2.2%, 3.7%±1.1%, and 2.5%±0.9%, respectively. A comparison of established, good prognosis genetic abnormalities showed that patients with high hyperdiploidy had significantly better EFS than those with ETV6-RUNX1 rearrangement (10-year EFS of 91.2%±3.0% vs. 79.5%±4.4%, p=0.033). For the overall cohort, male sex, infant ALL, initial CNS involvement, and Philadelphia chromosome (+) ALL were significant factors for lower EFS in multivariate study, while high hyperdiploidy conferred favorable outcome. For high and very high risk patients (n=231), high hyperdiploidy was the only significant factor for EFS in multivariate study. Conclusion Regarding good prognosis genetic abnormalities, patients with high hyperdiploidy had significantly better outcome than ETV6-RUNX1(+) patients. High hyperdiploidy was a major, favorable prognostic factor in the overall patient group, as well as the subgroup of patients with higher risk.
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Affiliation(s)
- Jae Wook Lee
- Division of Hematology and Oncology, Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seongkoo Kim
- Division of Hematology and Oncology, Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Pil-Sang Jang
- Division of Hematology and Oncology, Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Nack-Gyun Chung
- Division of Hematology and Oncology, Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Bin Cho
- Division of Hematology and Oncology, Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea
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4
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Kimura S, Mullighan CG. Molecular markers in ALL: Clinical implications. Best Pract Res Clin Haematol 2020; 33:101193. [PMID: 33038982 DOI: 10.1016/j.beha.2020.101193] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/28/2020] [Accepted: 05/27/2020] [Indexed: 12/11/2022]
Abstract
Acute lymphoblastic leukemia (ALL) is the most common childhood cancer and remains a main cause of death in children despite recent improvements in cure rates. In the past decade, development of massively parallel sequencing has enabled large scale genome profiling studies of ALL, which not only led to identification of new subtypes in both B-cell precursor ALL (BCP-ALL) and T-cell ALL (T-ALL), but has also identified potential new therapeutic approaches to target vulnerabilities of many subtypes. Several of these approaches have been validated in preclinical models and are now being formally evaluated in prospective clinical trials. In this review, we provide an overview of the recent advances in our knowledge of genomic bases of BCP-ALL, T-ALL, and relapsed ALL, and discuss their clinical implications.
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Affiliation(s)
- Shunsuke Kimura
- Department of Pathology, Hematological Malignancies Program, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 342, Memphis, 38105, TN, USA
| | - Charles G Mullighan
- Department of Pathology, Hematological Malignancies Program, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 342, Memphis, 38105, TN, USA.
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5
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Beneforti L, Dander E, Bresolin S, Bueno C, Acunzo D, Bertagna M, Ford A, Gentner B, Kronnie GT, Vergani P, Menéndez P, Biondi A, D'Amico G, Palmi C, Cazzaniga G. Pro-inflammatory cytokines favor the emergence of ETV6-RUNX1-positive pre-leukemic cells in a model of mesenchymal niche. Br J Haematol 2020; 190:262-273. [PMID: 32118299 DOI: 10.1111/bjh.16523] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 12/19/2019] [Accepted: 01/13/2020] [Indexed: 12/31/2022]
Abstract
ETV6-RUNX1 (E/R) fusion gene, arising in utero from translocation t(12;21)(p13:q22), is the most frequent alteration in childhood acute lymphoblastic leukemia (ALL). However, E/R is insufficient to cause overt leukemia since it generates a clinically silent pre-leukemic clone which persists in the bone marrow but fails to out-compete normal progenitors. Conversely, pre-leukemic cells show increased susceptibility to transformation following additional genetic insults. Infections/inflammation are the most accredited triggers for mutations accumulation and leukemic transformation in E/R+ pre-leukemic cells. However, precisely how E/R and inflammation interact in promoting leukemia is still poorly understood. Here we demonstrate that IL6/TNFα/ILβ pro-inflammatory cytokines cooperate with BM-MSC in promoting the emergence of E/R+ Ba/F3 over their normal counterparts by differentially affecting their proliferation and survival. Moreover, IL6/TNFα/ILβ-stimulated BM-MSC strongly attract E/R+ Ba/F3 in a CXCR2-dependent manner. Interestingly, E/R-expressing human CD34+ IL7R+ progenitors, a putative population for leukemia initiation during development, were preserved in the presence of BM-MSC and IL6/TNFα/ILβ compared to their normal counterparts. Finally, the extent of DNA damage increases within the inflamed niche in both control and E/R-expressing Ba/F3, potentially leading to transformation in the apoptosis-resistant pre-leukemic clone. Overall, our data provide new mechanistic insights into childhood ALL pathogenesis.
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Affiliation(s)
- Linda Beneforti
- Centro Ricerca Tettamanti, University of Milano-Bicocca, MBBM Foundation, Monza, Italy
| | - Erica Dander
- Centro Ricerca Tettamanti, University of Milano-Bicocca, MBBM Foundation, Monza, Italy
| | - Silvia Bresolin
- Dipartimento della Salute della Donna e del Bambino, University of Padua, Padua, Italy
| | - Clara Bueno
- Department of Biomedicine, School of Medicine, Josep Carreras Leukemia Research Institute, University of Barcelona, Barcelona, Spain
| | - Denise Acunzo
- Centro Ricerca Tettamanti, University of Milano-Bicocca, MBBM Foundation, Monza, Italy
| | - Mayla Bertagna
- Centro Ricerca Tettamanti, University of Milano-Bicocca, MBBM Foundation, Monza, Italy
| | - Anthony Ford
- Centre for Evolution and Cancer, The Institute of Cancer Research, London, UK
| | - Bernhard Gentner
- San Raffaele Telethon Institute for Gene Therapy (SR-TIGET), IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Geertruy Te Kronnie
- Dipartimento della Salute della Donna e del Bambino, University of Padua, Padua, Italy
| | | | - Pablo Menéndez
- Department of Biomedicine, School of Medicine, Josep Carreras Leukemia Research Institute, University of Barcelona, Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Cáncer (CIBER-ONC), ISCIII, Barcelona, Spain
| | - Andrea Biondi
- Centro Ricerca Tettamanti, University of Milano-Bicocca, MBBM Foundation, Monza, Italy.,Clinica Pediatrica, MBBM Foundation, University of Milano-Bicocca, Monza, Italy
| | - Giovanna D'Amico
- Centro Ricerca Tettamanti, University of Milano-Bicocca, MBBM Foundation, Monza, Italy
| | - Chiara Palmi
- Centro Ricerca Tettamanti, University of Milano-Bicocca, MBBM Foundation, Monza, Italy
| | - Giovanni Cazzaniga
- Centro Ricerca Tettamanti, University of Milano-Bicocca, MBBM Foundation, Monza, Italy
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Abstract
Despite high cure rates in children, acute lymphoblastic leukemia (ALL) remains a leading cause of cancer death in the young, and the likelihood of treatment failure increases with age. With the exception of tyrosine kinase inhibitors, there have been few advances in repurposing or developing new therapeutic approaches tailored to vulnerabilities of ALL subtypes or individual cases. Large-scale genome profiling studies conducted over the last decade promise to improve ALL outcomes by refining risk stratification and modulation of therapeutic intensity, and by identifying new targets and pathways for immunotherapy. Many of these approaches have been validated in preclinical models and now merit testing in clinical trials. This review discusses the advances in our understanding of the genomic taxonomy and ontogeny of B-progenitor ALL, with an emphasis on those discoveries of clinical importance.
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7
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Blunck CB, Terra-Granado E, Noronha EP, Wajnberg G, Passetti F, Pombo-de-Oliveira MS, Emerenciano M. CD9 predicts ETV6-RUNX1 in childhood B-cell precursor acute lymphoblastic leukemia. Hematol Transfus Cell Ther 2019; 41:205-211. [PMID: 31085145 PMCID: PMC6732401 DOI: 10.1016/j.htct.2018.11.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 11/07/2018] [Accepted: 11/21/2018] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION The ETV6-RUNX1 is a fusion gene associated with a good outcome in B-cell precursor lymphoblastic leukemia. OBJECTIVE This study aimed to re-evaluate the CD9 cellular expression by flow cytometry (FC) as a possible tool to predict the presence of ETV6-RUNX1. METHOD Childhood B-cell precursor lymphoblastic leukemia cases were included (n=186). The percentage of CD9-labeled cells and the median fluorescence intensity ratio were used for correlation with the molecular tests. Receiver Operating Characteristic curves were performed to determine the likelihood of the CD9 expression predicting ETV6-RUNX1. RESULTS The ETV6-RUNX1 was found in 44/186 (23.6%) cases. Data analysis revealed that the best cutoff for CD9 percentage was 64%, with an accuracy of 0.84, whereas the best cutoff for CD9 median fluorescence intensity ratio was 12.52, with an accuracy of 0.80. A strong association was observed between the level of CD9 expression and the presence of ETV6-RUNX1. CONCLUSION These data confirm that the CD9 expression could be used for risk stratification in clinical practice.
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Affiliation(s)
| | | | - Elda P Noronha
- Instituto Nacional de Câncer (INCA), Rio de Janeiro, RJ, Brazil
| | - Gabriel Wajnberg
- Instituto Nacional de Câncer (INCA), Rio de Janeiro, RJ, Brazil; Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil; Atlantic Cancer Research Institute, Moncton, Canada
| | - Fábio Passetti
- Instituto Nacional de Câncer (INCA), Rio de Janeiro, RJ, Brazil; Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
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8
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Abstract
B cell leukaemia is one of the most frequent malignancies in the paediatric population, but also affects a significant proportion of adults in developed countries. The majority of infant and paediatric cases initiate the process of leukaemogenesis during foetal development (in utero) through the formation of a chromosomal translocation or the acquisition/deletion of genetic material (hyperdiploidy or hypodiploidy, respectively). This first genetic insult is the major determinant for the prognosis and therapeutic outcome of patients. B cell leukaemia in adults displays similar molecular features as its paediatric counterpart. However, since this disease is highly represented in the infant and paediatric population, this review will focus on this demographic group and summarise the biological, clinical and epidemiological knowledge on B cell acute lymphoblastic leukaemia of four well characterised subtypes: t(4;11) MLL-AF4, t(12;21) ETV6-RUNX1, t(1;19) E2A-PBX1 and t(9;22) BCR-ABL1.
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Affiliation(s)
- Camille Malouf
- MRC Centre for Regenerative Medicine, The University of Edinburgh, 5 Little France Drive, Edinburgh, EH16 4UU UK
| | - Katrin Ottersbach
- MRC Centre for Regenerative Medicine, The University of Edinburgh, 5 Little France Drive, Edinburgh, EH16 4UU UK
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9
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Böiers C, Richardson SE, Laycock E, Zriwil A, Turati VA, Brown J, Wray JP, Wang D, James C, Herrero J, Sitnicka E, Karlsson S, Smith AJH, Jacobsen SEW, Enver T. A Human IPS Model Implicates Embryonic B-Myeloid Fate Restriction as Developmental Susceptibility to B Acute Lymphoblastic Leukemia-Associated ETV6-RUNX1. Dev Cell 2017; 44:362-377.e7. [PMID: 29290585 PMCID: PMC5807056 DOI: 10.1016/j.devcel.2017.12.005] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 08/04/2017] [Accepted: 12/01/2017] [Indexed: 12/15/2022]
Abstract
ETV6-RUNX1 is associated with childhood acute B-lymphoblastic leukemia (cALL) functioning as a first-hit mutation that initiates a clinically silent pre-leukemia in utero. Because lineage commitment hierarchies differ between embryo and adult, and the impact of oncogenes is cell-context dependent, we hypothesized that the childhood affiliation of ETV6-RUNX1 cALL reflects its origins in a progenitor unique to embryonic life. We characterize the first emerging B cells in first-trimester human embryos, identifying a developmentally restricted CD19-IL-7R+ progenitor compartment, which transitions from a myeloid to lymphoid program during ontogeny. This developmental series is recapitulated in differentiating human pluripotent stem cells (hPSCs), thereby providing a model for the initiation of cALL. Genome-engineered hPSCs expressing ETV6-RUNX1 from the endogenous ETV6 locus show expansion of the CD19-IL-7R+ compartment, show a partial block in B lineage commitment, and produce proB cells with aberrant myeloid gene expression signatures and potential: features (collectively) consistent with a pre-leukemic state.
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Affiliation(s)
- Charlotta Böiers
- Department of Cancer Biology, UCL Cancer Institute, UCL, London, UK; Lund Stem Cell Center, Lund University, Lund, Sweden
| | | | - Emma Laycock
- Department of Cancer Biology, UCL Cancer Institute, UCL, London, UK
| | - Alya Zriwil
- Lund Stem Cell Center, Lund University, Lund, Sweden
| | | | - John Brown
- Department of Cancer Biology, UCL Cancer Institute, UCL, London, UK
| | - Jason P Wray
- Department of Cancer Biology, UCL Cancer Institute, UCL, London, UK
| | - Dapeng Wang
- Department of Cancer Biology, UCL Cancer Institute, UCL, London, UK
| | - Chela James
- Department of Cancer Biology, UCL Cancer Institute, UCL, London, UK
| | - Javier Herrero
- Department of Cancer Biology, UCL Cancer Institute, UCL, London, UK
| | - Ewa Sitnicka
- Lund Stem Cell Center, Lund University, Lund, Sweden
| | | | - Andrew J H Smith
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, UK; MRC Molecular Haematology Unit, University of Oxford, Oxford, UK
| | - Sten Erik W Jacobsen
- MRC Molecular Haematology Unit, University of Oxford, Oxford, UK; Departments of Cell and Molecular Biology and Medicine Huddinge, Center for Hematology and Regenerative Medicine, Karolinska Institutet, Stockholm, Sweden; Haematopoietic Stem Cell Laboratory, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK; Karolinska University Hospital, Stockholm, Sweden
| | - Tariq Enver
- Department of Cancer Biology, UCL Cancer Institute, UCL, London, UK; Lund Stem Cell Center, Lund University, Lund, Sweden.
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10
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Pettit T, Cole N, Leung W, Ballantine K, Macfarlane S. Analysis of common cytogenetic abnormalities in New Zealand pediatric ALL shows ethnically diverse carriage of ETV6-RUNX1, without a corresponding difference in survival. Pediatr Blood Cancer 2017; 64. [PMID: 28598545 DOI: 10.1002/pbc.26676] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Revised: 05/15/2017] [Accepted: 05/16/2017] [Indexed: 01/21/2023]
Abstract
BACKGROUND The frequency of common cytogenetic abnormalities in pediatric acute lymphoblastic leukemia (ALL) is known to vary by geographic location and ethnic origin. This study aimed to determine the frequency of hypodiploidy, ETV6-RUNX1, BCR-ABL1, and MLL rearrangement within New Zealand's pediatric ALL population and to assess whether the frequency of these ALL prognostic markers varies according to ethnicity. PROCEDURE The New Zealand Children's Cancer Registry provided information for all registered pediatric ALL patients that were diagnosed between 2000 and 2009, with medical records available for 246 patients. Each patient's medical record was reviewed to determine the frequency of hypodiploidy, ETV6-RUNX1, BCR-ABL1, MLL rearrangement, and cell lineage. Chi-square tests for independence were undertaken to compare the frequencies of cytogenetic abnormalities according to prioritized ethnicity. RESULTS The frequency of cytogenetic ALL abnormalities in the New Zealand pediatric population were consistent with international reference values. A low frequency of ETV6-RUNX1 was evident for Maori pediatric ALL patients (5.4%, P = 0.018), when compared to Pacific peoples (21.1%) and non-Maori/non-Pacific peoples (27.4%). This has not impacted on outcome, however, with equivalent 5-year overall survival being observed in Maori (89.4%) compared to Pacific peoples (92.0%) and non-Maori/non-Pacific peoples (90.2%). CONCLUSIONS A lower frequency of the favorable prognostic marker ETV6-RUNX1 was observed in Maori pediatric ALL patients. This did not translate into poorer survival. Future research into biological and nonbiological prognostic factors in this patient population may assist in explaining this finding.
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Affiliation(s)
- Tristan Pettit
- Children's Haematology Oncology Centre, Christchurch Hospital, Christchurch, New Zealand
| | - Nyree Cole
- Starship Blood and Cancer Centre, Starship Children's Hospital, Auckland, New Zealand
| | - Wingchi Leung
- Starship Blood and Cancer Centre, Starship Children's Hospital, Auckland, New Zealand
| | - Kirsten Ballantine
- Children's Haematology Oncology Centre, Christchurch Hospital, Christchurch, New Zealand.,National Child Cancer Network NZ, Auckland, New Zealand
| | - Scott Macfarlane
- Starship Blood and Cancer Centre, Starship Children's Hospital, Auckland, New Zealand.,National Child Cancer Network NZ, Auckland, New Zealand
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12
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Fernando TR, Contreras JR, Zampini M, Rodriguez-Malave NI, Alberti MO, Anguiano J, Tran TM, Palanichamy JK, Gajeton J, Ung NM, Aros CJ, Waters EV, Casero D, Basso G, Pigazzi M, Rao DS. The lncRNA CASC15 regulates SOX4 expression in RUNX1-rearranged acute leukemia. Mol Cancer 2017; 16:126. [PMID: 28724437 PMCID: PMC5517805 DOI: 10.1186/s12943-017-0692-x] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 07/03/2017] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) play a variety of cellular roles, including regulation of transcription and translation, leading to alterations in gene expression. Some lncRNAs modulate the expression of chromosomally adjacent genes. Here, we assess the roles of the lncRNA CASC15 in regulation of a chromosomally nearby gene, SOX4, and its function in RUNX1/AML translocated leukemia. RESULTS CASC15 is a conserved lncRNA that was upregulated in pediatric B-acute lymphoblastic leukemia (B-ALL) with t (12; 21) as well as pediatric acute myeloid leukemia (AML) with t (8; 21), both of which are associated with relatively better prognosis. Enforced expression of CASC15 led to a myeloid bias in development, and overall, decreased engraftment and colony formation. At the cellular level, CASC15 regulated cellular survival, proliferation, and the expression of its chromosomally adjacent gene, SOX4. Differentially regulated genes following CASC15 knockdown were enriched for predicted transcriptional targets of the Yin and Yang-1 (YY1) transcription factor. Interestingly, we found that CASC15 enhances YY1-mediated regulation of the SOX4 promoter. CONCLUSIONS Our findings represent the first characterization of this CASC15 in RUNX1-translocated leukemia, and point towards a mechanistic basis for its action.
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Affiliation(s)
- Thilini R Fernando
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, USA.,Present Address: Cedars-Sinai Medical Center, 8700 Beverly Blvd, Los Angeles, CA, 90048, USA
| | - Jorge R Contreras
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, USA.,Cellular and Molecular Pathology Ph.D. Program, UCLA, Los Angeles, USA
| | - Matteo Zampini
- Women and Child Health Department- Hematology-Oncology laboratory, University of Padova, Padova, Italy
| | - Norma I Rodriguez-Malave
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, USA.,Cellular and Molecular Pathology Ph.D. Program, UCLA, Los Angeles, USA.,Present Address: Cedars-Sinai Medical Center, 8700 Beverly Blvd, Los Angeles, CA, 90048, USA
| | - Michael O Alberti
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, USA.,Present Address: Department of Pathology & Immunology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Jaime Anguiano
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, USA.,Present Address: University of San Francisco, 2130 Fulton St, San Francisco, CA, 94117, USA
| | - Tiffany M Tran
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, USA.,Molecular, Cellular and Integrative Physiology Ph.D. program, UCLA, Los Angeles, USA
| | - Jayanth K Palanichamy
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, USA.,Present Address: All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - Jasmine Gajeton
- Microbiology, Immunology and Molecular Genetics Program, UCLA, Los Angeles, USA.,Present Address: Department of Molecular Cardiology Lerner Research Institute, 9500 Euclid Avenue. Cleveland, Cleveland, OH, 44195, USA
| | - Nolan M Ung
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, USA
| | - Cody J Aros
- Medical Scientist Training Program, David Geffen School of Medicine, UCLA, Los Angeles, USA
| | - Ella V Waters
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, USA.,Present Address: Department of Molecular and Cell Biology, UC Berkeley, Berkeley, USA
| | - David Casero
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, USA
| | - Giuseppe Basso
- Women and Child Health Department- Hematology-Oncology laboratory, University of Padova, Padova, Italy
| | - Martina Pigazzi
- Women and Child Health Department- Hematology-Oncology laboratory, University of Padova, Padova, Italy
| | - Dinesh S Rao
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, USA. .,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, USA. .,Broad Stem Cell Research Center, UCLA, 650 Charles E. Young Drive, Factor 12-272, Los Angeles, CA, 90095, USA.
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13
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Abstract
Acute leukaemia is the major subtype of paediatric cancer with a cumulative risk of 1 in 2000 for children up to the age of 15 years. Childhood acute lymphoblastic leukaemia (ALL) is a biologically and clinically diverse disease with distinctive subtypes; multiple chromosomal translocations exist within the subtypes and each carries its own prognostic relevance. The most common chromosome translocation observed is the t(12;21) that results in an in-frame fusion between the first five exons of ETV6 (TEL) and almost the entire coding region of RUNX1 (AML1).The natural history of childhood ALL is almost entirely clinically silent and is well advanced at the point of diagnosis. It has, however, been possible to backtrack this process through molecular analysis of appropriate clinical samples: (i) leukaemic clones in monozygotic twins that are either concordant or discordant for ALL; (ii) archived neonatal blood spots or Guthrie cards from individuals who later developed leukaemia; and (iii) stored, viable cord blood cells.Here, we outline our studies on the aetiology and pathology of childhood ALL that provide molecular evidence for a monoclonal, prenatal origin of ETV6-RUNX1+ leukaemia in monozygotic identical twins. We provide mechanistic support for the concept that altered patterns of infection during early childhood can deliver the necessary promotional drive for the progression of ETV6-RUNX1+ pre-leukaemic cells into a postnatal overt leukaemia.
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Affiliation(s)
- Anthony M Ford
- Centre for Evolution and Cancer, The Institute of Cancer Research, London, SM2 5NG, UK.
| | - Mel Greaves
- Centre for Evolution and Cancer, The Institute of Cancer Research, London, SM2 5NG, UK
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14
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Grönroos T, Teppo S, Mehtonen J, Laukkanen S, Liuksiala T, Nykter M, Heinäniemi M, Lohi O. Overexpression of PTP4A3 in ETV6-RUNX1 acute lymphoblastic leukemia. Leuk Res 2017; 54:1-6. [PMID: 28063378 DOI: 10.1016/j.leukres.2016.12.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 10/25/2016] [Accepted: 12/18/2016] [Indexed: 11/21/2022]
Abstract
Cell signalling, which is often derailed in cancer, is a network of multiple interconnected pathways with numerous feedback mechanisms. Dynamics of cell signalling is intimately regulated by addition and removal of phosphate groups by kinases and phosphatases. We examined expression of members of the PTP4A family of phosphatases across acute leukemias. While expression of PTP4A1 and PTP4A2 remained relatively unchanged across diseases, PTP4A3 showed marked overexpression in ETV6-RUNX1 and BCR-ABL1 subtypes of precursor B cell acute lymphoblastic leukemia. We show that PTP4A3 is regulated by the ETV6-RUNX1 fusion, but noticed no marked impact on cell viability either after PTP4A3 silencing or treatment with a PTP4A3 inhibitor. Regulation of PTP4A3 expression is altered in specific subgroups of acute leukemias and this is likely brought about by expression of the aberrant fusion genes.
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15
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Alm SJ, Engvall C, Asp J, Palmqvist L, Abrahamsson J, Fogelstrand L. Minimal residual disease monitoring in childhood B lymphoblastic leukemia with t(12;21)(p13;q22); ETV6-RUNX1: concordant results using quantitation of fusion transcript and flow cytometry. Int J Lab Hematol 2016; 39:121-128. [PMID: 28004528 DOI: 10.1111/ijlh.12593] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 09/10/2016] [Indexed: 02/02/2023]
Abstract
INTRODUCTION The translocation t(12;21)(p13;q22) resulting in the fusion gene ETV6-RUNX1, is the most frequent gene fusion in childhood B lymphoblastic leukemia. In the Nordic Society of Paediatric Haematology and Oncology ALL-2008 treatment protocol, treatment stratification in B-lineage ALL is based on results of minimal residual disease (MRD) analysis with fluorescence-activated cell sorting (FACS). In this study, we determined whether RT-qPCR of the ETV6-RUNX1 fusion transcript can be a reliable alternative for MRD analysis. METHODS Seventy-eight bone marrow samples from 29 children at diagnosis and day 15, 29, and 78 during treatment were analyzed for MRD with FACS and with quantitative reverse transcription polymerase chain reaction (RT-qPCR). Fusion transcript MRD was defined as the ETV6-RUNX1/GUSB ratio at the follow-up time point (day 15/29/78) divided with the ETV6-RUNX1/GUSB ratio at diagnosis (%). RESULTS MRD analysis with FACS and with RT-qPCR of ETV6-RUNX1 fusion transcript showed strong correlation. All cases showed concordant results at the treatment stratifying time points day 29 and day 78, when comparing the two methods with a cutoff set to 0.1%. CONCLUSION RT-qPCR is a valuable addition and could also be an alternative to FACS in cases where FACS is not achievable for MRD analysis.
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Affiliation(s)
- S J Alm
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - C Engvall
- Ryhov County Hospital, Jonkoping, Sweden
| | - J Asp
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Chemistry, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - L Palmqvist
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Chemistry, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - J Abrahamsson
- Department of Pediatrics, The Queen Silvia Children's Hospital, Gothenburg, Sweden
| | - L Fogelstrand
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Chemistry, Sahlgrenska University Hospital, Gothenburg, Sweden
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16
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Kjeldsen E. Characterization of a novel acquired der(1)del(1)(p13p31)t(1;15)(q42;q15) in a high risk t(12;21)-positive acute lymphoblastic leukemia. Gene 2016; 595:39-48. [PMID: 27664585 DOI: 10.1016/j.gene.2016.09.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 09/15/2016] [Accepted: 09/20/2016] [Indexed: 11/30/2022]
Abstract
The t(12;21)(p13;q22) with ETV6-RUNX1 fusion occurs in 25% of cases of B-cell precursor acute lymphoblastic leukemia (BCP-ALL); and is generally associated with favorable prognosis. However, 15-20% of the t(12;21)-positive cases are associated with high-risk disease due to for example slow early responses to therapy. It is well-known that development of overt leukemia in t(12;21)-positive ALL requires secondary chromosomal aberrations although the full spectrum of these cytogenetic alterations is yet unsettled, and also, how they may be associated with disease outcome. This report describes the case of an adolescent male with t(12;21)-positive ALL who displayed a G-banded karyotype initially interpreted as del(1)(p22p13) and del(15)(q15). The patient was treated according to NOPHO standard risk protocol at diagnosis, but had minimal residual disease (MRD) at 6,4% on day 29 as determined by flow cytometric immunophenotyping. Because of MRD level>0.1% he was then assigned as a high risk patient and received intensified chemotherapy accordingly. Further molecular cytogenetic studies and oligo-based aCGH (oaCGH) analysis characterized the acquired complex structural rearrangements on chromosomes 1 and 15, which can be described as der(1)del(1)(p13.1p31.1)t(1;15)(q42;q15) with concurrent deletions at 1q31.2-q31.3, 1q42.12-q43, and 15q15.1-q15.3. The unbalanced complex rearrangements have not been described previously. Extended locus-specific FISH analyses showed that the three deletions were on the same chromosome 1 homologue that was involved in the t(1;15), and that the deletion on chromosome 15 also was on the same chromosome 15 homologue as involved in the t(1;15). Together these findings show the great importance of the combined usage of molecular cytogenetic analyses and oaCGH analysis to enhance characterization of apparently simple G-banded karyotypes, and to provide a more complete spectrum of secondary chromosomal aberrations in high risk t(12;21)-positive BCP-ALLs.
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Affiliation(s)
- Eigil Kjeldsen
- Hemodiagnostic Laboratory, Cancer Cytogenetics Section, Department of Hematology, Aarhus University Hospital, Tage-Hansens Gade 2, DK-8000 Aarhus C, Denmark.
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17
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Kjeldsen E. Oligo-based aCGH analysis reveals cryptic unbalanced der(6)t(X;6) in pediatric t(12;21)-positive acute lymphoblastic leukemia. Exp Mol Pathol 2016; 101:38-43. [PMID: 27215399 DOI: 10.1016/j.yexmp.2016.05.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 05/18/2016] [Accepted: 05/18/2016] [Indexed: 11/23/2022]
Abstract
Secondary chromosomal aberrations are necessary for development of overt leukemia in t(12;21)/ETV6-RUNX1-positive acute lymphoblastic leukemia (ALL). Conventional cytogenetic analysis supplemented with locus-specific FISH analyses is gold standard to detect important clonal aberrations in this disease group. However, adequate chromosome banding analysis may often be hampered by poor chromosome morphology and banding patterns in pediatric ALL cases, which may hinder identification of possible clinical important additional chromosomal aberrations. We used oligo-based high-resolution aCGH (oaCGH) analysis as an adjunct tool to enhance conventional cytogenetic analysis in pediatric acute B-cell lymphoblastic leukemia in a prospective single center study during a 4-year period (2012-2015). In a consecutive series of 45 pediatric B-ALLs, we identified eight patients with t(12;21)/ETV6-RUNX1 fusion by FISH analysis. In three of the patients, oaCGH analysis revealed concurrent Xq duplication and 6q deletion, which was cryptic by G-banded analysis. FISH analyses with whole chromosome painting probes confirmed the imbalances and showed an unbalanced translocation der(6)t(X;6) in all three patients. A search in the literature revealed two additional pediatric patients with cryptic der(6)t(X;6) in t(12;21)-positive ALLs. No common break points on Xq or 6q could be determined between the five patients. This study highlights the importance of oaCGH analysis as an adjunct cytogenetic tool to detect cryptic chromosomal aberrations. Further, the study adds to understanding the full spectrum of secondary chromosomal aberrations in the very common t(12;21)-positive pediatric ALL disease group. We suggest that the unbalanced der(6)t(X;6), which is cryptic to conventional cytogenetics, is a non-random secondary event in this disease group. It might be that the specific combination of concurrent Xq duplication and 6q-deletion results in gain of possible oncogenes on Xq and loss of possible tumor suppressor genes on 6q that are important for the leukemic propagation of t(12;21)-positive hematopoietic cells in a subset of ALLs.
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18
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Jin Y, Wang X, Hu S, Tang J, Li B, Chai Y. Determination of ETV6-RUNX1 genomic breakpoint by next-generation sequencing. Cancer Med 2015; 5:337-51. [PMID: 26711002 PMCID: PMC4735785 DOI: 10.1002/cam4.579] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 09/20/2015] [Accepted: 10/09/2015] [Indexed: 01/11/2023] Open
Abstract
The t(12;21)(p13;q22) ETV6-RUNX1 gene fusion is one of the most common chromosomal translocation in childhood acute lymphoblastic leukemia (ALL). It is associated with favorable prognosis. The identification of the genomic sequence of the breakpoint flanking regions of the ETV6-RUNX1 translocation should be the best strategy to monitor minimal residual disease (MRD) in patients with ETV6-RUNX1-positive ALL. In this study, the ETV6-RUNX1 translocation was sequenced by next-generation sequencing (NGS) in 26 patients with ETV6-RUNX1-positive ALL and re-sequenced by using the Sanger method. Interestingly, the three-way translocation, including ETV6-RUNX1, was detected in five patients. Four of them relapsed during or after therapy, while 21 patients without the three-way translocation were still in remission (P < 0.0001). The three-way translocation pattern was identical between the diagnosis and relapse samples in three patients, excluding one patient (SCMC-001245). The relapse samples retained the translocation of ETV6-RUNX1 relative to the three-way translocation t(8;12;21) at diagnosis, suggesting that the three-way translocation might be an important risk factor for relapse in patients with ETV6-RUNX1-positive ALL and should be further studied.
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Affiliation(s)
- Yanliang Jin
- Department of Hematology and Oncology, Soochow University Affiliated to Children's Hospital, Jiangsu, 215003, China
| | - Xingwei Wang
- Department of Hematology and Oncology, Shanghai Children's Medical Center, Key laboratory of Pediatric Hematology and Oncology Ministry of Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
| | - Shaoyan Hu
- Department of Hematology and Oncology, Soochow University Affiliated to Children's Hospital, Jiangsu, 215003, China
| | - Jingyan Tang
- Department of Hematology and Oncology, Shanghai Children's Medical Center, Key laboratory of Pediatric Hematology and Oncology Ministry of Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
| | - Benshang Li
- Department of Hematology and Oncology, Shanghai Children's Medical Center, Key laboratory of Pediatric Hematology and Oncology Ministry of Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
| | - Yihuan Chai
- Department of Hematology and Oncology, Soochow University Affiliated to Children's Hospital, Jiangsu, 215003, China
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19
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Linka Y, Ginzel S, Borkhardt A, Landgraf P. Identification of TEL-AML1 ( ETV6-RUNX1) associated DNA and its impact on mRNA and protein output using ChIP, mRNA expression arrays and SILAC. Genom Data 2015; 2:85-8. [PMID: 26484077 PMCID: PMC4536161 DOI: 10.1016/j.gdata.2014.05.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 05/15/2014] [Accepted: 05/16/2014] [Indexed: 11/30/2022]
Abstract
The contribution of the most common reciprocal translocation in childhood B-cell precursor leukemia t(12;21)(p13;q22) to leukemia development is still under debate. Direct as well as secondary indirect effects of the TEL-AML1 fusion protein are commonly recorded by using cell lines and patient samples, often bearing the TEL-AML1 fusion protein for decades. To identify direct targets of the fusion protein a short-term induction of TEL-AML1 is needed. We here describe in detail the experimental procedure, quality controls and contents of the ChIP, mRNA expression and SILAC datasets associated with the study published by Linka and colleagues in the Blood Cancer Journal [1] utilizing a short term induction of TEL-AML1 in an inducible precursor B-cell line model.
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Affiliation(s)
- Yvonne Linka
- Heinrich-Heine-University Düsseldorf, Medical Faculty, Clinic for Pediatric Oncology, Hematology and Clinical Immunology, Duesseldorf, Germany
| | - Sebastian Ginzel
- Heinrich-Heine-University Düsseldorf, Medical Faculty, Clinic for Pediatric Oncology, Hematology and Clinical Immunology, Duesseldorf, Germany ; Department of Computer Science, Bonn-Rhine-Sieg University of Applied Sciences, St. Augustin, Germany
| | - Arndt Borkhardt
- Heinrich-Heine-University Düsseldorf, Medical Faculty, Clinic for Pediatric Oncology, Hematology and Clinical Immunology, Duesseldorf, Germany
| | - Pablo Landgraf
- Heinrich-Heine-University Düsseldorf, Medical Faculty, Clinic for Pediatric Oncology, Hematology and Clinical Immunology, Duesseldorf, Germany
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20
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Knez VM, Carstens BJ, Swisshelm KL, McGranahan AN, Liang X. Heterogeneity of Abnormal RUNX1 Leading to Clinicopathologic Variations in Childhood B-Lymphoblastic Leukemia. Am J Clin Pathol 2015; 144:305-14. [PMID: 26185316 DOI: 10.1309/ajcpvy5e5ommybfj] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 12/27/2022] Open
Abstract
OBJECTIVES Abnormalities of the RUNX1 gene in childhood B-acute lymphoblastic leukemia (B-ALL) are manifested by ETV6-RUNX1 or RUNX1 amplification. A detailed comparison between the two regarding clinicopathologic features with genetic analysis has not been performed previously. This parallel study assessed how different RUNX1 abnormalities affect the clinicopathology of B-ALL. METHODS We compared clinicopathologic factors, including age, sex, WBC count, cerebrospinal fluid (CSF) involvement, immunophenotype, and blast proliferation rate between B-ALL with RUNX1 amplification (10 cases) and B-ALL with ETV6-RUNX1 translocation (67 cases) in childhood B-ALL. RESULTS CD7 was often expressed in RUNX1 amplification but not in ETV6-RUNX1 (44% vs 0%, P = .0001) and appeared to correlate with CSF involvement in the former group (3/4 [75%]). CD13 was often detected in ETV6-RUNX1 with additional RUNX1 gain (38%) with an even higher frequency in double ETV6-RUNX1 translocation (77%), but was not detected in RUNX1 amplification (0%, P < .05). Children with RUNX1 amplification were older and more often CSF positive, while those with ETV6-RUNX1 were younger, more frequently had hyperleukocytosis, and had higher blast proliferation rates. CONCLUSIONS RUNX1 copy numbers seem to be proportional to the age of B-ALL onset and the frequency of CSF involvement, while RUNX1 amplification vs translocation causes aberrant expression of CD7 and CD13, respectively.
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Affiliation(s)
- Virginia M. Knez
- Department of Pathology, University of Colorado School of Medicine, Aurora
| | - Billie J. Carstens
- Department of Pathology, University of Colorado School of Medicine, Aurora
- Colorado Genetics Laboratory, University of Colorado School of Medicine, Aurora
| | - Karen L. Swisshelm
- Department of Pathology, University of Colorado School of Medicine, Aurora
- Colorado Genetics Laboratory, University of Colorado School of Medicine, Aurora
| | | | - Xiayuan Liang
- Department of Pathology, University of Colorado School of Medicine, Aurora
- Department of Pathology, Children’s Hospital Colorado, Aurora
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21
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Baughn LB, Biegel JA, South ST, Smolarek TA, Volkert S, Carroll AJ, Heerema NA, Rabin KR, Zweidler-McKay PA, Loh M, Hirsch B. Integration of cytogenomic data for furthering the characterization of pediatric B-cell acute lymphoblastic leukemia: a multi-institution, multi-platform microarray study. Cancer Genet 2014; 208:1-18. [PMID: 25678190 DOI: 10.1016/j.cancergen.2014.11.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 11/03/2014] [Accepted: 11/10/2014] [Indexed: 11/16/2022]
Abstract
It is well documented that among subgroups of B-cell acute lymphoblastic leukemia (B-ALL), the genetic profile of the leukemic blasts has significant impact on prognosis and stratification for therapy. Recent studies have documented the power of microarrays to screen genome-wide for copy number aberrations (CNAs) and regions of copy number-neutral loss of heterozygosity (CNLOH) that are not detectable by G-banding or fluorescence in situ hybridization (FISH). These studies have involved application of a single array platform for the respective cases. The present investigation demonstrates the feasibility and usefulness of integrating array results from multiple laboratories (ARUP, The Children's Hospital of Philadelphia, Cincinnati Children's Hospital Medical Center, and University of Minnesota Medical Center) that utilize different array platforms (Affymetrix, Agilent, or Illumina) in their respective clinical settings. A total of 65 patients enrolled on the Children's Oncology Group (COG) study AALL08B1 were identified for study, as cytogenetic and FISH studies had also been performed on these patients, with a central review of those results available for comparison. Microarray data were first analyzed by the individual laboratories with their respective software systems; raw data files were then centrally validated using NEXUS software. The results demonstrated the added value of integrating multi-platform data with cytogenetic and FISH data and highlight novel findings identified by array including the co-occurrence of low and high risk abnormalities not previously reported to coexist within a clone, novel regions of chromosomal amplification, clones characterized by numerous whole chromosome LOH that do not meet criteria for doubling of a near-haploid, and characterization of array profiles associated with an IKZF1 deletion. Each of these findings raises questions that are clinically relevant to risk stratification.
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Affiliation(s)
- Linda B Baughn
- Department of Laboratory Medicine and Pathology and Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - Jaclyn A Biegel
- Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Sarah T South
- ARUP Laboratories, Department of Pathology, University of Utah, Salt Lake City, UT, USA
| | - Teresa A Smolarek
- Division of Human Genetics, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Suzanne Volkert
- Department of Laboratory Medicine and Pathology and Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - Andrew J Carroll
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Nyla A Heerema
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Karen R Rabin
- Department of Pediatrics, Texas Children's Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | | | - Mignon Loh
- Department of Pediatrics, Benioff Children's Hospital and the Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA, USA
| | - Betsy Hirsch
- Department of Laboratory Medicine and Pathology and Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA.
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22
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Pombo-de-Oliveira MS, Emerenciano M, Winn APFF, Costa I, Mansur MB, Ford AM. Concordant B-cell precursor acute lymphoblastic leukemia in non-twinned siblings. Blood Cells Mol Dis 2014; 54:110-5. [PMID: 25150625 DOI: 10.1016/j.bcmd.2014.07.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 07/21/2014] [Indexed: 10/24/2022]
Abstract
Associating the risk of childhood acute lymphoblastic leukemia (ALL) with genetic predisposition is still a challenge. Here, we discuss two non-twinned sibs (girl and boy) diagnosed with B-cell precursor (BCP-ALL) and ETV6-RUNX1. BCP-ALL clinical onset occurred 10months apart from each diagnosis. One child is alive in complete continuous remission, whereas, the other relapsed and evolved to death with resistance to ALL treatment. Despite the fact that BCP-ALL with ETV6-RUNX1 usually results in a very good prognosis, the sibs experienced divergent outcomes; a remarkable difference in one child that presented a more aggressive disease was higher leukocytosis associated with IKZF1 deletion. The familial history of cancer and genetic susceptibility was explored. The sibs were absolutely identical in all 17 loci of genes tested; GSTM1, GSTT1, NQO1, TP53, and TP63 were wild-type, whereas at least one copy of the variant allele for IKZF1, ARID5B, PTPRJ and CEBPE was present. The familial pattern of ETV6 was tested by the 12p microsatellite analysis and demonstrated that deletions occurred in one child but not the other, while heterozygous patterns were found in the parents. Altogether, our data suggest that genetic predisposition aligned with chance haa an additive effect in BCP-ALL outcome.
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Affiliation(s)
- Maria S Pombo-de-Oliveira
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Cancer, Rio de Janeiro, Brazil.
| | - Mariana Emerenciano
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Cancer, Rio de Janeiro, Brazil
| | | | - Imaruí Costa
- Pediatric Hematology-Oncology Service, Hospital Joana de Gusmão, Florianópolis, Santa Catarina, Brazil
| | - Marcela B Mansur
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Cancer, Rio de Janeiro, Brazil; Centre for Evolution and Cancer, The Institute of Cancer Research, London, United Kingdom
| | - Anthony M Ford
- Centre for Evolution and Cancer, The Institute of Cancer Research, London, United Kingdom
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