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Lee SH, Ashcraft E, Yang W, Roberts KG, Gocho Y, Rowland L, Inaba H, Karol SE, Jeha S, Crews KR, Mullighan CG, Relling MV, Evans WE, Cheng C, Yang JJ, Pui CH. Prognostic and Pharmacotypic Heterogeneity of Hyperdiploidy in Childhood ALL. J Clin Oncol 2023; 41:5422-5432. [PMID: 37729596 PMCID: PMC10852380 DOI: 10.1200/jco.23.00880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/29/2023] [Accepted: 07/26/2023] [Indexed: 09/22/2023] Open
Abstract
PURPOSE High hyperdiploidy, the largest and favorable subtype of childhood ALL, exhibits significant biological and prognostic heterogeneity. However, factors contributing to the varied treatment response and the optimal definition of hyperdiploidy remain uncertain. METHODS We analyzed outcomes of patients treated on two consecutive frontline ALL protocols, using six different definitions of hyperdiploidy: chromosome number 51-67 (Chr51-67); DNA index (DI; DI1.16-1.6); United Kingdom ALL study group low-risk hyperdiploid, either trisomy of chromosomes 17 and 18 or +17 or +18 in the absence of +5 and +20; single trisomy of chromosome 18; double trisomy of chromosomes 4 and 10; and triple trisomy (TT) of chromosomes 4, 10, and 17. Additionally, we characterized ALL ex vivo pharmacotypes across eight main cytotoxic drugs. RESULTS Among 1,096 patients analyzed, 915 had B-ALL and 634 had pharmacotyping performed. In univariate analysis, TT emerged as the most favorable criterion for event-free survival (EFS; 10-year EFS, 97.3% v 86.8%; P = .0003) and cumulative incidence of relapse (CIR; 10-year CIR, 1.4% v 8.8%; P = .002) compared with the remaining B-ALL. In multivariable analysis, accounting for patient numbers using the akaike information criterion (AIC), DI1.16-1.6 was the most favorable criterion, exhibiting the best AIC for both EFS (hazard ratio [HR], 0.45; 95% CI, 0.23 to 0.88) and CIR (HR, 0.45; 95% CI, 0.21 to 0.99). Hyperdiploidy and subgroups with favorable prognoses exhibited notable sensitivities to asparaginase and mercaptopurine. Specifically, asparaginase sensitivity was associated with trisomy of chromosomes 16 and 17, whereas mercaptopurine sensitivity was linked to gains of chromosomes 14 and 17. CONCLUSION Among different definitions of hyperdiploid ALL, DI is optimal based on independent prognostic impact and also the large proportion of low-risk patients identified. Hyperdiploid ALL exhibited particular sensitivities to asparaginase and mercaptopurine, with chromosome-specific associations.
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Affiliation(s)
- Shawn H.R. Lee
- Department of Pharmacy and Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, TN
- Department of Pediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Khoo Teck Puat-National University Children's Medical Institute, National University Health System, Singapore, Singapore
| | - Emily Ashcraft
- Department of Biostatistics, St Jude Children's Research Hospital, Memphis, TN
| | - Wenjian Yang
- Department of Pharmacy and Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, TN
| | - Kathryn G. Roberts
- Department of Pathology, St Jude Children's Research Hospital, Memphis, TN
| | - Yoshihiro Gocho
- Department of Pharmacy and Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, TN
| | - Lauren Rowland
- Department of Pharmacy and Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, TN
| | - Hiroto Inaba
- Department of Oncology, St Jude Children's Research Hospital, Memphis, TN
| | - Seth E. Karol
- Department of Oncology, St Jude Children's Research Hospital, Memphis, TN
| | - Sima Jeha
- Department of Oncology, St Jude Children's Research Hospital, Memphis, TN
| | - Kristine R. Crews
- Department of Pharmacy and Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, TN
| | | | - Mary V. Relling
- Department of Pharmacy and Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, TN
| | - William E. Evans
- Department of Pharmacy and Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, TN
| | - Cheng Cheng
- Department of Biostatistics, St Jude Children's Research Hospital, Memphis, TN
| | - Jun J. Yang
- Department of Pharmacy and Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, TN
- Department of Oncology, St Jude Children's Research Hospital, Memphis, TN
| | - Ching-Hon Pui
- Department of Pathology, St Jude Children's Research Hospital, Memphis, TN
- Department of Oncology, St Jude Children's Research Hospital, Memphis, TN
- Department of Global Pediatric Medicine, St Jude Children's Research Hospital, Memphis, TN
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2
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Paulsson K. Chromosomal Gains as a Favorable Prognostic Factor in Pediatric ALL. J Clin Oncol 2023; 41:5433-5436. [PMID: 37820292 DOI: 10.1200/jco.23.01760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 08/21/2023] [Indexed: 10/13/2023] Open
Affiliation(s)
- Kajsa Paulsson
- Department of Laboratory Medicine, Division of Clinical Genetics, Lund University, Lund, Sweden
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3
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Bedics G, Egyed B, Kotmayer L, Benard-Slagter A, de Groot K, Bekő A, Hegyi LL, Bátai B, Krizsán S, Kriván G, Erdélyi DJ, Müller J, Haltrich I, Kajtár B, Pajor L, Vojcek Á, Ottóffy G, Ujfalusi A, Szegedi I, Tiszlavicz LG, Bartyik K, Csanádi K, Péter G, Simon R, Hauser P, Kelemen Á, Sebestyén E, Jakab Z, Matolcsy A, Kiss C, Kovács G, Savola S, Bödör C, Alpár D. PersonALL: a genetic scoring guide for personalized risk assessment in pediatric B-cell precursor acute lymphoblastic leukemia. Br J Cancer 2023; 129:455-465. [PMID: 37340093 PMCID: PMC10403542 DOI: 10.1038/s41416-023-02309-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 05/08/2023] [Accepted: 06/05/2023] [Indexed: 06/22/2023] Open
Abstract
BACKGROUND Recurrent genetic lesions provide basis for risk assessment in pediatric acute lymphoblastic leukemia (ALL). However, current prognostic classifiers rely on a limited number of predefined sets of alterations. METHODS Disease-relevant copy number aberrations (CNAs) were screened genome-wide in 260 children with B-cell precursor ALL. Results were integrated with cytogenetic data to improve risk assessment. RESULTS CNAs were detected in 93.8% (n = 244) of the patients. First, cytogenetic profiles were combined with IKZF1 status (IKZF1normal, IKZF1del and IKZF1plus) and three prognostic subgroups were distinguished with significantly different 5-year event-free survival (EFS) rates, IKAROS-low (n = 215): 86.3%, IKAROS-medium (n = 27): 57.4% and IKAROS-high (n = 18): 37.5%. Second, contribution of genetic aberrations to the clinical outcome was assessed and an aberration-specific score was assigned to each prognostically relevant alteration. By aggregating the scores of aberrations emerging in individual patients, personalized cumulative values were calculated and used for defining four prognostic subgroups with distinct clinical outcomes. Two favorable subgroups included 60% of patients (n = 157) with a 5-year EFS of 96.3% (excellent risk, n = 105) and 87.2% (good risk, n = 52), respectively; while 40% of patients (n = 103) showed high (n = 74) or ultra-poor (n = 29) risk profile (5-year EFS: 67.4% and 39.0%, respectively). CONCLUSIONS PersonALL, our conceptually novel prognostic classifier considers all combinations of co-segregating genetic alterations, providing a highly personalized patient stratification.
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Affiliation(s)
- Gábor Bedics
- HCEMM-SE Molecular Oncohematology Research Group, Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Bálint Egyed
- HCEMM-SE Molecular Oncohematology Research Group, Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
- Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Lili Kotmayer
- HCEMM-SE Molecular Oncohematology Research Group, Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | | | | | - Anna Bekő
- HCEMM-SE Molecular Oncohematology Research Group, Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Lajos László Hegyi
- HCEMM-SE Molecular Oncohematology Research Group, Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Bence Bátai
- HCEMM-SE Molecular Oncohematology Research Group, Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Szilvia Krizsán
- HCEMM-SE Molecular Oncohematology Research Group, Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Gergely Kriván
- Central Hospital of Southern Pest - National Institute of Hematology and Infectious Diseases, Budapest, Hungary
| | - Dániel J Erdélyi
- Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Judit Müller
- Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Irén Haltrich
- Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Béla Kajtár
- Department of Pathology, University of Pécs Medical School, Pécs, Hungary
| | - László Pajor
- Department of Pathology, University of Pécs Medical School, Pécs, Hungary
| | - Ágnes Vojcek
- Department of Pediatrics, University of Pécs Medical School, Pécs, Hungary
| | - Gábor Ottóffy
- Department of Pediatrics, University of Pécs Medical School, Pécs, Hungary
| | - Anikó Ujfalusi
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - István Szegedi
- Division of Pediatric Hematology-Oncology, Institute of Pediatrics, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Lilla Györgyi Tiszlavicz
- Department of Paediatrics and Paediatric Health Care Center, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Katalin Bartyik
- Department of Paediatrics and Paediatric Health Care Center, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Krisztina Csanádi
- Hemato-Oncology Unit, Heim Pál Children's Hospital, Budapest, Hungary
| | - György Péter
- Hemato-Oncology Unit, Heim Pál Children's Hospital, Budapest, Hungary
| | - Réka Simon
- Hemato-Oncology and Stem Cell Transplantation Unit, Velkey László Children's Health Center, Miskolc, Hungary
| | - Péter Hauser
- Hemato-Oncology and Stem Cell Transplantation Unit, Velkey László Children's Health Center, Miskolc, Hungary
| | - Ágnes Kelemen
- Hemato-Oncology and Stem Cell Transplantation Unit, Velkey László Children's Health Center, Miskolc, Hungary
| | - Endre Sebestyén
- HCEMM-SE Molecular Oncohematology Research Group, Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Zsuzsanna Jakab
- Hungarian Childhood Cancer Registry, Hungarian Pediatric Oncology Network, Budapest, Hungary
| | - András Matolcsy
- HCEMM-SE Molecular Oncohematology Research Group, Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
- Department of Laboratory Medicine, Karolinska Institute, Solna, Sweden
| | - Csongor Kiss
- Division of Pediatric Hematology-Oncology, Institute of Pediatrics, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Gábor Kovács
- Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | | | - Csaba Bödör
- HCEMM-SE Molecular Oncohematology Research Group, Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Donát Alpár
- HCEMM-SE Molecular Oncohematology Research Group, Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary.
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Panuciak K, Nowicka E, Mastalerczyk A, Zawitkowska J, Niedźwiecki M, Lejman M. Overview on Aneuploidy in Childhood B-Cell Acute Lymphoblastic Leukemia. Int J Mol Sci 2023; 24:ijms24108764. [PMID: 37240110 DOI: 10.3390/ijms24108764] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/04/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
Recent years have brought significant progress in the treatment of B-cell acute lymphoblastic leukemia (ALL). This was influenced by both the improved schemes of conventionally used therapy, as well as the development of new forms of treatment. As a consequence, 5-year survival rates have increased and now exceed 90% in pediatric patients. For this reason, it would seem that everything has already been explored in the context of ALL. However, delving into its pathogenesis at the molecular level shows that there are many variations that still need to be analyzed in more detail. One of them is aneuploidy, which is among the most common genetic changes in B-cell ALL. It includes both hyperdiploidy and hypodiploidy. Knowledge of the genetic background is important already at the time of diagnosis, because the first of these forms of aneuploidy is characterized by a good prognosis, in contrast to the second, which is in favor of an unfavorable course. In our work, we will focus on summarizing the current state of knowledge on aneuploidy, along with an indication of all the consequences that may be correlated with it in the context of the treatment of patients with B-cell ALL.
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Affiliation(s)
- Kinga Panuciak
- Student Scientific Society, Independent Laboratory of Genetic Diagnostics, Medical University of Lublin, 20-093 Lublin, Poland
| | - Emilia Nowicka
- Student Scientific Society, Independent Laboratory of Genetic Diagnostics, Medical University of Lublin, 20-093 Lublin, Poland
| | - Angelika Mastalerczyk
- Student Scientific Society, Independent Laboratory of Genetic Diagnostics, Medical University of Lublin, 20-093 Lublin, Poland
| | - Joanna Zawitkowska
- Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, Gębali 6, 20-093 Lublin, Poland
| | - Maciej Niedźwiecki
- Department of Pediatrics, Hematology and Oncology, Medical University of Gdansk, Debinki 7, 80-211 Gdansk, Poland
| | - Monika Lejman
- Independent Laboratory of Genetic Diagnostics, Medical University of Lublin, 20-093 Lublin, Poland
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5
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[Clinical features and prognosis of high hyperdiploid childhood acute lymphoblastic leukemia: a multicenter retrospective analysis in Fujian Province, China]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2023; 25:38-45. [PMID: 36655662 PMCID: PMC9893819 DOI: 10.7499/j.issn.1008-8830.2208126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
OBJECTIVES To study the clinical features and prognosis of high hyperdiploid (HHD) childhood acute lymphoblastic leukemia (ALL). METHODS A retrospective analysis was performed on the medical data of 1 414 children who were newly diagnosed with ALL and were admitted to five hospitals in Fujian Province of China from April 2011 to December 2020. According to karyotype, they were divided into two groups: HHD (n=172) and non-HHD (n=1 242). The clinical features and treatment outcome were compared between the two groups, and the factors influencing the prognosis were further explored. RESULTS Among the 1 414 children with ALL, 172 (12.16%) had HHD. Compared with the non-HHD group, the HHD group had significantly lower proportions of children with risk factors for poor prognosis at diagnosis (age of onset ≥10 years or <1 year, white blood cell count ≥50×109/L, and T-cell phenotype) or positive fusion genes (TEL-AML1, BCR-ABL1, E2A-PBX1, and MLL gene rearrangement) (P<0.05). The HHD group had a significantly higher proportion of children with minimal residual disease (MRD) <0.01% at the end of induction chemotherapy (P<0.05). The 10-year event-free survival (EFS) rate and overall survival (OS) rate in the HHD group were significantly higher than those in the non-HHD group (P<0.05). The univariate analysis showed that the number of chromosomes of 58-66, trisomy of chromosome 10, trisomy of chromosome 17, bone marrow MRD <1% on day 15 or 19 of induction chemotherapy, and bone marrow MRD <0.01% on day 33 or 46 of induction chemotherapy were associated with a higher EFS rate (P<0.05), and trisomy of chromosome 10 was associated with a higher OS rate (P<0.05). The multivariate Cox analysis showed that trisomy of chromosome 17 was closely associated with a high EFS rate (P<0.05). CONCLUSIONS The ALL children with HHD have few risk factors for poor prognosis at diagnosis and often have good prognosis. The number of chromosomes and trisomy of specific chromosomes are associated with prognosis in these children.
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6
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Zhang L, Habeebu SSM, Li W. Prognostic and Predictive Biomarkers in Precursor B-cell Acute Lymphoblastic Leukemia. Leukemia 2022. [DOI: 10.36255/exon-publications-leukemia-biomarkers-lymphoblastic-leukemia] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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7
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Schubert J, Wu J, Li MM, Cao K. Best Practice for Clinical Somatic Variant Interpretation and Reporting. Clin Lab Med 2022; 42:423-434. [DOI: 10.1016/j.cll.2022.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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8
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Ramos-Muntada M, Trincado JL, Blanco J, Bueno C, Rodríguez-Cortez VC, Bataller A, López-Millán B, Schwab C, Ortega M, Velasco P, Blanco ML, Nomdedeu J, Ramírez-Orellana M, Minguela A, Fuster JL, Cuatrecasas E, Camós M, Ballerini P, Escherich G, Boer J, denBoer M, Hernández-Rivas JM, Calasanz MJ, Cazzaniga G, Harrison CJ, Menéndez P, Molina O. Clonal heterogeneity and rates of specific chromosome gains are risk predictors in childhood high-hyperdiploid B-cell acute lymphoblastic leukemia. Mol Oncol 2022; 16:2899-2919. [PMID: 35726693 PMCID: PMC9394234 DOI: 10.1002/1878-0261.13276] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 04/07/2022] [Accepted: 06/17/2022] [Indexed: 11/10/2022] Open
Abstract
B‐cell acute lymphoblastic leukemia (B‐ALL) is the commonest childhood cancer. High hyperdiploidy (HHD) identifies the most frequent cytogenetic subgroup in childhood B‐ALL. Although hyperdiploidy represents an important prognostic factor in childhood B‐ALL, the specific chromosome gains with prognostic value in HHD‐B‐ALL remain controversial, and the current knowledge about the hierarchy of chromosome gains, clonal heterogeneity and chromosomal instability in HHD‐B‐ALL remains very limited. We applied automated sequential‐iFISH coupled with single‐cell computational modeling to identify the specific chromosomal gains of the eight typically gained chromosomes in a large cohort of 72 primary diagnostic (DX, n = 62) and matched relapse (REL, n = 10) samples from HHD‐B‐ALL patients with either favorable or unfavorable clinical outcome in order to characterize the clonal heterogeneity, specific chromosome gains and clonal evolution. Our data show a high degree of clonal heterogeneity and a hierarchical order of chromosome gains in DX samples of HHD‐B‐ALL. The rates of specific chromosome gains and clonal heterogeneity found in DX samples differ between HHD‐B‐ALL patients with favorable or unfavorable clinical outcome. In fact, our comprehensive analyses at DX using a computationally defined risk predictor revealed low levels of trisomies +18+10 and low levels of clonal heterogeneity as robust relapse risk factors in minimal residual disease (MRD)‐negative childhood HHD‐B‐ALL patients: relapse‐free survival beyond 5 years: 22.1% versus 87.9%, P < 0.0001 and 33.3% versus 80%, P < 0.0001, respectively. Moreover, longitudinal analysis of matched DX‐REL HHD‐B‐ALL samples revealed distinct patterns of clonal evolution at relapse. Our study offers a reliable prognostic sub‐stratification of pediatric MRD‐negative HHD‐B‐ALL patients.
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Affiliation(s)
- Mireia Ramos-Muntada
- Genetics of Male Fertility Group. Cell Biology, Physiology and Immunology Department. Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Juan L Trincado
- Josep Carreras Leukemia Research Institute and Department of Biomedicine, School of Medicine. University of Barcelona, Barcelona, Spain.,CNAG-CRG, Centre for Genomic Regulation (CRG), Barcelona Institute of Science and Technology (BIST), Barcelona, Spain.,Red Española de Terápias Avanzadas (TERAV), ISCIII, Barcelona, Spain
| | - Joan Blanco
- Genetics of Male Fertility Group. Cell Biology, Physiology and Immunology Department. Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Clara Bueno
- Josep Carreras Leukemia Research Institute and Department of Biomedicine, School of Medicine. University of Barcelona, Barcelona, Spain.,Red Española de Terápias Avanzadas (TERAV), ISCIII, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Cáncer (CIBER-ONC), ISCIII, Barcelona, Spain
| | - Virginia C Rodríguez-Cortez
- Josep Carreras Leukemia Research Institute and Department of Biomedicine, School of Medicine. University of Barcelona, Barcelona, Spain.,Red Española de Terápias Avanzadas (TERAV), ISCIII, Barcelona, Spain
| | - Alex Bataller
- Josep Carreras Leukemia Research Institute and Department of Biomedicine, School of Medicine. University of Barcelona, Barcelona, Spain.,Red Española de Terápias Avanzadas (TERAV), ISCIII, Barcelona, Spain.,Hematology department, Hospital Clínic de Barcelona, IDIBAPS, University of Barcelona
| | - Belén López-Millán
- Josep Carreras Leukemia Research Institute and Department of Biomedicine, School of Medicine. University of Barcelona, Barcelona, Spain.,Red Española de Terápias Avanzadas (TERAV), ISCIII, Barcelona, Spain
| | - Claire Schwab
- Wolfson Childhood Cancer Research Centre. Newcastle University, Newcastle Upon Tyne, UK
| | - Margarita Ortega
- Hematology Service, Vall d'Hebrón Hospital Universitari, Experimental Hematology, Vall d'Hebrón Institute of Oncology (VHIO), Barcelona, Spain
| | - Pablo Velasco
- Pediatric Oncology and Hematology Department, Vall d'Hebrón Hospital, Barcelona, Spain
| | - Maria L Blanco
- Hematology Laboratory. Hospital Sant Pau, Barcelona, Spain
| | - Josep Nomdedeu
- Hematology Laboratory. Hospital Sant Pau, Barcelona, Spain
| | | | - Alfredo Minguela
- Immunology Service, Clinic University Hospital Virgen de la Arrixaca and Instituto Murciano de Investigación Biomédica (IMIB), Murcia, Spain
| | - Jose L Fuster
- Pediatric Hematology and Oncology Department. Hospital Clínico Universitario Virgen de la Arrixaca, Instituto Murciano de Investigación Biosanitaria (IMIB), Murcia, Spain
| | - Esther Cuatrecasas
- Hematology Laboratory, Institut de Recerca Hospital Sant Joan de Déu, Barcelona, Spain
| | - Mireia Camós
- Hematology Laboratory, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain.,Leukemia and other pediatric hemopathies. Developmental Tumor Biology Group, Institut de Recerca Hospital Sant Joan de Déu Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
| | - Paola Ballerini
- AP-HP, Service d'Hématologie Pédiatrique, Hôpital A. Trousseau, Paris, France
| | - Gabriele Escherich
- Department of Pediatric Hematology and Oncology, University Medical Center Hamburg, Hamburg, Germany
| | - Judith Boer
- Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands; Oncode Institute, Utrecht, the Netherlands
| | - Monique denBoer
- Department of Pediatric Oncology/Hematology, Erasmus MC - Sophia Children's Hospital, Rotterdam, the Netherlands
| | - Jesús M Hernández-Rivas
- Departamento de Hematología, Hospital Universitario de Salamanca, Salamanca-IBSAL, Salamaca, Spain
| | | | | | - Christine J Harrison
- Wolfson Childhood Cancer Research Centre. Newcastle University, Newcastle Upon Tyne, UK
| | - Pablo Menéndez
- Josep Carreras Leukemia Research Institute and Department of Biomedicine, School of Medicine. University of Barcelona, Barcelona, Spain.,Red Española de Terápias Avanzadas (TERAV), ISCIII, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Cáncer (CIBER-ONC), ISCIII, Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - Oscar Molina
- Josep Carreras Leukemia Research Institute and Department of Biomedicine, School of Medicine. University of Barcelona, Barcelona, Spain.,Red Española de Terápias Avanzadas (TERAV), ISCIII, Barcelona, Spain
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9
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Leahy AB, Devine KJ, Li Y, Liu H, Myers R, DiNofia A, Wray L, Rheingold SR, Callahan C, Baniewicz D, Patino M, Newman H, Hunger SP, Grupp SA, Barrett DM, Maude SL. Impact of high-risk cytogenetics on outcomes for children and young adults receiving CD19-directed CAR T-cell therapy. Blood 2022; 139:2173-2185. [PMID: 34871373 PMCID: PMC8990372 DOI: 10.1182/blood.2021012727] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 11/24/2021] [Indexed: 11/20/2022] Open
Abstract
Chimeric antigen receptor (CAR) T-cell therapy can induce durable remissions of relapsed/refractory B-acute lymphoblastic leukemia (ALL). However, case reports suggested differential outcomes mediated by leukemia cytogenetics. We identified children and young adults with relapsed/refractory CD19+ ALL/lymphoblastic lymphoma treated on 5 CD19-directed CAR T-cell (CTL019 or humanized CART19) clinical trials or with commercial tisagenlecleucel from April 2012 to April 2019. Patients were hierarchically categorized according to leukemia cytogenetics: High-risk lesions were defined as KMT2A (MLL) rearrangements, Philadelphia chromosome (Ph+), Ph-like, hypodiploidy, or TCF3/HLF; favorable as hyperdiploidy or ETV6/RUNX1; and intermediate as iAMP21, IKZF1 deletion, or TCF3/PBX1. Of 231 patients aged 1 to 29, 74 (32%) were categorized as high risk, 28 (12%) as intermediate, 43 (19%) as favorable, and 86 (37%) as uninformative. Overall complete remission rate was 94%, with no difference between strata. There was no difference in relapse-free survival (RFS; P = .8112), with 2-year RFS for the high-risk group of 63% (95% confidence interval [CI], 52-77). There was similarly no difference seen in overall survival (OS) (P = .5488), with 2-year OS for the high-risk group of 70% (95% CI, 60-82). For patients with KMT2A-rearranged infant ALL (n = 13), 2-year RFS was 67% (95% CI, 45-99), and OS was 62% (95% CI, 40-95), with multivariable analysis demonstrating no increased risk of relapse (hazard ratio, 0.70; 95% CI, 0.21-2.90; P = .7040) but a higher proportion of relapses associated with myeloid lineage switch and a 3.6-fold increased risk of all-cause death (95% CI, 1.04-12.75; P = .0434). CTL019/huCART19/tisagenlecleucel are effective at achieving durable remissions across cytogenetic categories. Relapsed/refractory patients with high-risk cytogenetics, including KMT2A-rearranged infant ALL, demonstrated high RFS and OS probabilities at 2 years.
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Affiliation(s)
- Allison Barz Leahy
- Division of Oncology and Cancer Immunotherapy Program, Children's Hospital of Philadelphia, Philadelphia, PA
- Penn Center for Cancer Care Innovation, Perelman Center for Advanced Medicine, University of Pennsylvania, Philadelphia, PA
- Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Kaitlin J Devine
- Division of Oncology and Cancer Immunotherapy Program, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Yimei Li
- Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Biostatistics, Epidemiology, and Informatics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Hongyan Liu
- Department of Biomedical and Health Informatics, Children's Hospital of Philadelphia, Philadelphia, PA; and
| | - Regina Myers
- Division of Oncology and Cancer Immunotherapy Program, Children's Hospital of Philadelphia, Philadelphia, PA
- Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Amanda DiNofia
- Division of Oncology and Cancer Immunotherapy Program, Children's Hospital of Philadelphia, Philadelphia, PA
- Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Lisa Wray
- Division of Oncology and Cancer Immunotherapy Program, Children's Hospital of Philadelphia, Philadelphia, PA
- Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Susan R Rheingold
- Division of Oncology and Cancer Immunotherapy Program, Children's Hospital of Philadelphia, Philadelphia, PA
- Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Colleen Callahan
- Division of Oncology and Cancer Immunotherapy Program, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Diane Baniewicz
- Division of Oncology and Cancer Immunotherapy Program, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Maria Patino
- Division of Oncology and Cancer Immunotherapy Program, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Haley Newman
- Division of Oncology and Cancer Immunotherapy Program, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Stephen P Hunger
- Division of Oncology and Cancer Immunotherapy Program, Children's Hospital of Philadelphia, Philadelphia, PA
- Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Stephan A Grupp
- Division of Oncology and Cancer Immunotherapy Program, Children's Hospital of Philadelphia, Philadelphia, PA
- Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - David M Barrett
- Division of Oncology and Cancer Immunotherapy Program, Children's Hospital of Philadelphia, Philadelphia, PA
- Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Shannon L Maude
- Division of Oncology and Cancer Immunotherapy Program, Children's Hospital of Philadelphia, Philadelphia, PA
- Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
- Center for Cellular Immunotherapies, Perelman School of Medicine, Philadelphia, PA
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10
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Lejman M, Chałupnik A, Chilimoniuk Z, Dobosz M. Genetic Biomarkers and Their Clinical Implications in B-Cell Acute Lymphoblastic Leukemia in Children. Int J Mol Sci 2022; 23:ijms23052755. [PMID: 35269896 PMCID: PMC8911213 DOI: 10.3390/ijms23052755] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/27/2022] [Accepted: 02/28/2022] [Indexed: 02/04/2023] Open
Abstract
Acute lymphoblastic leukemia (ALL) is a heterogeneous group of hematologic malignancies characterized by abnormal proliferation of immature lymphoid cells. It is the most commonly diagnosed childhood cancer with an almost 80% cure rate. Despite favorable survival rates in the pediatric population, a significant number of patients develop resistance to therapy, resulting in poor prognosis. ALL is a heterogeneous disease at the genetic level, but the intensive development of sequencing in the last decade has made it possible to broaden the study of genomic changes. New technologies allow us to detect molecular changes such as point mutations or to characterize epigenetic or proteomic profiles. This process made it possible to identify new subtypes of this disease characterized by constellations of genetic alterations, including chromosome changes, sequence mutations, and DNA copy number alterations. These genetic abnormalities are used as diagnostic, prognostic and predictive biomarkers that play an important role in earlier disease detection, more accurate risk stratification, and treatment. Identification of new ALL biomarkers, and thus a greater understanding of their molecular basis, will lead to better monitoring of the course of the disease. In this article, we provide an overview of the latest information on genomic alterations found in childhood ALL and discuss their impact on patients' clinical outcomes.
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Affiliation(s)
- Monika Lejman
- Laboratory of Genetic Diagnostics, Medical University of Lublin, 20-093 Lublin, Poland
- Correspondence:
| | - Aleksandra Chałupnik
- Student Scientific Society, Laboratory of Genetic Diagnostics, Medical University of Lublin, 20-093 Lublin, Poland; (A.C.); (Z.C.); (M.D.)
| | - Zuzanna Chilimoniuk
- Student Scientific Society, Laboratory of Genetic Diagnostics, Medical University of Lublin, 20-093 Lublin, Poland; (A.C.); (Z.C.); (M.D.)
| | - Maciej Dobosz
- Student Scientific Society, Laboratory of Genetic Diagnostics, Medical University of Lublin, 20-093 Lublin, Poland; (A.C.); (Z.C.); (M.D.)
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11
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Yeung DTO, Osborn MP, White DL. B-cell acute lymphoblastic leukaemia: recent discoveries in molecular pathology, their prognostic significance, and a review of the current classification. Br J Haematol 2021; 197:13-27. [PMID: 34747016 DOI: 10.1111/bjh.17879] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Acute lymphoblastic leukaemia (ALL) remains a leading cause of non-traumatic death in children, and the majority of adults diagnosed will succumb to the disease. Recent advances in molecular biology and bioinformatics have enabled more detailed genomic analysis and a better understanding of the molecular biology of ALL. A number of recurrent genomic drivers have recently been described, which not only aid in diagnosis and prognostication, but also may offer opportunities for specific therapeutic targeting. The present review summarises B-ALL genomic pathology at diagnosis, including lesions detectable using traditional cytogenetic methods as well as those detected only through advanced molecular techniques.
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Affiliation(s)
- David T O Yeung
- Precision Medicine Theme, South Australian Health and Medical Research Institute, Adelaide, Australia.,Faculty of Health and Medical Science, University of Adelaide, Adelaide, South Australia, Australia.,Royal Adelaide Hospital, Adelaide, South Australia, Australia
| | - Michael P Osborn
- Faculty of Health and Medical Science, University of Adelaide, Adelaide, South Australia, Australia.,Royal Adelaide Hospital, Adelaide, South Australia, Australia.,Women's and Children's Hospital, North Adelaide, South Australia, Australia
| | - Deborah L White
- Precision Medicine Theme, South Australian Health and Medical Research Institute, Adelaide, Australia.,Faculty of Health and Medical Science, University of Adelaide, Adelaide, South Australia, Australia.,School of Biological Sciences, University of Adelaide, Adelaide, South Australia, Australia
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12
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Defining low-risk high hyperdiploidy in patients with paediatric acute lymphoblastic leukaemia: a retrospective analysis of data from the UKALL97/99 and UKALL2003 clinical trials. LANCET HAEMATOLOGY 2021; 8:e828-e839. [PMID: 34715050 PMCID: PMC8567211 DOI: 10.1016/s2352-3026(21)00304-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 09/13/2021] [Accepted: 09/13/2021] [Indexed: 12/27/2022]
Abstract
BACKGROUND High hyperdiploidy is the most common genetic subtype of childhood acute lymphoblastic leukaemia and is associated with a good outcome. However, some patients relapse and, given its prevalence, patients with high hyperdiploidy account for a large proportion of all relapses. We aimed to evaluate putative risk factors and determine the optimal pattern of trisomies for predicting outcome. METHODS We used discovery and validation cohorts from consecutive trials-UKALL97/99 (n=456) and UKALL2003 (n=725)-to develop the prognostic profile. UKALL97/99 recruited patients aged 1-18 years between Jan 1, 1997, and June 15, 2002, and UKALL2003 recruited children and young adults aged 1-24 years between Oct 1, 2003, and June 30, 2001, from the UK and Ireland who were newly diagnosed with acute lymphoblastic leukaemia. Cytogenetic and fluorescence in-situ hybridisation testing was performed on pre-treatment bone marrow samples by regional UK National Health Service genetic laboratories or centrally by the Leukaemia Research Cytogenetics Group, and results were reported using established nomenclature and definitions. We examined the prognostic effect of previously proposed genetic and non-genetic risk factors among patients with high hyperdiploid acute lymphoblastic leukaemia treated on UKALL2003. We used Bayesian information criterion, targeted projection pursuit, and multivariate analysis to identify the optimal number of trisomies, and best subset regression and multivariate analysis to identify the optimal combination. Survival analysis considered three endpoints, as follows: event-free survival, defined as time to relapse, second tumour, or death, censored at last contact; relapse rate, defined as time to relapse for those reaching complete remission, censored at death in remission or last contact; and overall survival, defined as time to death, censored at last contact. FINDINGS The median follow-up time for UKALL97/99 was 10·59 years (IQR 9·25-12·06) and 9·40 years (8·00-11·55) for UKALL2003. UKALL97/99 included 208 female patients and 248 male patients, and UKALL2003 included 345 female patients and 380 male patients. We deduced that the trisomic status of four chromosomes provided the optimal information for predicting outcome. The good risk profile comprised karyotypes with +17 and +18 or +17 or +18 in the absence of +5 and +20. All remaining cases were classified in the poor risk profile. The ratio of patients with good risk and poor risk was 82:18 and 80:20 in the discovery and validation cohorts, respectively. In the validation cohort, patients with the high hyperdiploid good risk profile had an improved response to treatment compared with other patients with high hyperdiploidy at 10 years (relapse rate 5% [95% CI 3-7] vs 16% [10-23]; p<0·0001; event-free survival 92% [90-94] vs 81% [73-86]; p<0·0001; and overall survival 96% [94-97] vs 86% [79-91]; p<0·0001). The outcome for high hyperdiploid poor risk patients was similar to that of patients with an intermediate cytogenetic profile. The prognostic effect of the UKALL high hyperdiploid profile was independent of minimal residual disease and the profile outperformed other high hyperdiploid risk profiles. INTERPRETATION Future clinical trials and treatment protocols using high hyperdiploidy as a risk stratification factor should consider modifying the definition beyond chromosome count to incorporate this novel UKALL high hyperdiploid profile. FUNDING Blood Cancer UK.
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13
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The application of RNA sequencing for the diagnosis and genomic classification of pediatric acute lymphoblastic leukemia. Blood Adv 2021; 4:930-942. [PMID: 32150610 DOI: 10.1182/bloodadvances.2019001008] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 02/02/2020] [Indexed: 01/23/2023] Open
Abstract
Acute lymphoblastic leukemia (ALL) is the most common childhood malignancy, and implementation of risk-adapted therapy has been instrumental in the dramatic improvements in clinical outcomes. A key to risk-adapted therapies includes the identification of genomic features of individual tumors, including chromosome number (for hyper- and hypodiploidy) and gene fusions, notably ETV6-RUNX1, TCF3-PBX1, and BCR-ABL1 in B-cell ALL (B-ALL). RNA-sequencing (RNA-seq) of large ALL cohorts has expanded the number of recurrent gene fusions recognized as drivers in ALL, and identification of these new entities will contribute to refining ALL risk stratification. We used RNA-seq on 126 ALL patients from our clinical service to test the utility of including RNA-seq in standard-of-care diagnostic pipelines to detect gene rearrangements and IKZF1 deletions. RNA-seq identified 86% of rearrangements detected by standard-of-care diagnostics. KMT2A (MLL) rearrangements, although usually identified, were the most commonly missed by RNA-seq as a result of low expression. RNA-seq identified rearrangements that were not detected by standard-of-care testing in 9 patients. These were found in patients who were not classifiable using standard molecular assessment. We developed an approach to detect the most common IKZF1 deletion from RNA-seq data and validated this using an RQ-PCR assay. We applied an expression classifier to identify Philadelphia chromosome-like B-ALL patients. T-ALL proved a rich source of novel gene fusions, which have clinical implications or provide insights into disease biology. Our experience shows that RNA-seq can be implemented within an individual clinical service to enhance the current molecular diagnostic risk classification of ALL.
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14
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Reduced-intensity therapy for pediatric lymphoblastic leukemia: impact of residual disease early in remission induction. Blood 2021; 137:20-28. [PMID: 33410896 DOI: 10.1182/blood.2020007977] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 09/02/2020] [Indexed: 12/21/2022] Open
Abstract
Legacy data show that ∼40% of children with acute lymphoblastic leukemia (ALL) were cured with limited antimetabolite-based chemotherapy regimens. However, identifying patients with very-low-risk (VLR) ALL remains imprecise. Patients selected based on a combination of presenting features and a minimal residual disease (MRD) level <0.01% on day 19 of induction therapy had excellent outcomes with low-intensity treatment. We investigated the impact of MRD levels between 0.001% and <0.01% early in remission induction on the outcome of VLR ALL treated with a low-intensity regimen. Between October of 2011 and September of 2015, 200 consecutive patients with B-precursor ALL with favorable clinicopathologic features and MRD levels <0.01%, as assessed by flow cytometry in the bone marrow on day 19 and at the end of induction therapy, received reduced-intensity therapy. The 5-year event-free survival was 89.5% (± 2.2% standard error [SE]), and the overall survival was 95.5% (± 1.5% SE). The 5-year cumulative incidence of relapse (CIR) was 7% (95% confidence interval, 4-11%). MRD levels were between 0.001% and <0.01% on day 19 in 29 patients. These patients had a 5-year CIR that was significantly higher than that of patients with undetectable residual leukemia (17.2% ± 7.2% vs 5.3% ± 1.7%, respectively; P = .02). Our study shows that children with VLR ALL can be treated successfully with decreased-intensity therapy, and it suggests that the classification criteria for VLR can be further refined by using a more sensitive MRD assay.
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15
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Association of aberrant ASNS imprinting with asparaginase sensitivity and chromosomal abnormality in childhood BCP-ALL. Blood 2021; 136:2319-2333. [PMID: 32573712 DOI: 10.1182/blood.2019004090] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 05/18/2020] [Indexed: 02/08/2023] Open
Abstract
Karyotype is an important prognostic factor in childhood B-cell precursor acute lymphoblastic leukemia (BCP-ALL), but the underlying pharmacogenomics remain unknown. Asparaginase is an integral component in current chemotherapy for childhood BCP-ALL. Asparaginase therapy depletes serum asparagine. Normal hematopoietic cells can produce asparagine by asparagine synthetase (ASNS) activity, but ALL cells are unable to synthesize adequate amounts of asparagine. The ASNS gene has a typical CpG island in its promoter. Thus, methylation of the ASNS CpG island could be one of the epigenetic mechanisms for ASNS gene silencing in BCP-ALL. To gain deep insights into the pharmacogenomics of asparaginase therapy, we investigated the association of ASNS methylation status with asparaginase sensitivity. The ASNS CpG island is largely unmethylated in normal hematopoietic cells, but it is allele-specifically methylated in BCP-ALL cells. The ASNS gene is located at 7q21, an evolutionally conserved imprinted gene cluster. ASNS methylation in childhood BCP-ALL is associated with an aberrant methylation of the imprinted gene cluster at 7q21. Aberrant methylation of mouse Asns and a syntenic imprinted gene cluster is also confirmed in leukemic spleen samples from ETV6-RUNX1 knockin mice. In 3 childhood BCP-ALL cohorts, ASNS is highly methylated in BCP-ALL patients with favorable karyotypes but is mostly unmethylated in BCP-ALL patients with poor prognostic karyotypes. Higher ASNS methylation is associated with higher L-asparaginase sensitivity in BCP-ALL through lower ASNS gene and protein expression levels. These observations demonstrate that silencing of the ASNS gene as a result of aberrant imprinting is a pharmacogenetic mechanism for the leukemia-specific activity of asparaginase therapy in BCP-ALL.
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16
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Mattano LA, Devidas M, Maloney KW, Wang C, Friedmann AM, Buckley P, Borowitz MJ, Carroll AJ, Gastier-Foster JM, Heerema NA, Kadan-Lottick NS, Matloub YH, Marshall DT, Stork LC, Loh ML, Raetz EA, Wood BL, Hunger SP, Carroll WL, Winick NJ. Favorable Trisomies and ETV6-RUNX1 Predict Cure in Low-Risk B-Cell Acute Lymphoblastic Leukemia: Results From Children's Oncology Group Trial AALL0331. J Clin Oncol 2021; 39:1540-1552. [PMID: 33739852 DOI: 10.1200/jco.20.02370] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
PURPOSE Children's Oncology Group (COG) AALL0331 tested whether pegaspargase intensification on a low-intensity chemotherapy backbone would improve the continuous complete remission (CCR) rate in a low-risk subset of children with standard-risk B-acute lymphoblastic leukemia (ALL). METHODS AALL0331 enrolled 5,377 patients with National Cancer Institute standard-risk B-ALL (age 1-9 years, WBC < 50,000/μL) between 2005 and 2010. Following a common three-drug induction, a cohort of 1,857 eligible patients participated in the low-risk ALL random assignment. Low-risk criteria included no extramedullary disease, < 5% marrow blasts by day 15, end-induction marrow minimal residual disease < 0.1%, and favorable cytogenetics (ETV6-RUNX1 fusion or simultaneous trisomies of chromosomes 4, 10, and 17). Random assignment was to standard COG low-intensity therapy (including two pegaspargase doses, one each during induction and delayed intensification) with or without four additional pegaspargase doses at 3-week intervals during consolidation and interim maintenance. The study was powered to detect a 4% improvement in 6-year CCR rate from 92% to 96%. RESULTS The 6-year CCR and overall survival (OS) rates for the entire low-risk cohort were 94.7% ± 0.6% and 98.7% ± 0.3%, respectively. The CCR rates were similar between arms (intensified pegaspargase 95.3% ± 0.8% v standard 94.0% ± 0.8%; P = .13) with no difference in OS (98.1% ± 0.5% v 99.2% ± 0.3%; P = .99). Compared to a subset of standard-risk study patients given identical therapy who had the same early response characteristics but did not have favorable or unfavorable cytogenetics, outcomes were significantly superior for low-risk patients (CCR hazard ratio 1.95; P = .0004; OS hazard ratio 5.42; P < .0001). CONCLUSION Standard COG therapy without intensified pegaspargase, which can easily be given as an outpatient with limited toxicity, cures nearly all children with B-ALL identified as low-risk by clinical, early response, and favorable cytogenetic criteria.
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Affiliation(s)
| | - Meenakshi Devidas
- Department of Global Pediatric Medicine, St Jude Children's Research Hospital, Memphis, TN
| | - Kelly W Maloney
- Department of Pediatrics, University of Colorado and Children's Hospital Colorado, Aurora, CO
| | - Cindy Wang
- Department of Biostatistics, Colleges of Medicine, Public Health, and Health Professions, University of Florida, Gainesville, FL
| | - Alison M Friedmann
- Department of Pediatrics, Massachusetts General Hospital Cancer Center, Boston, MA
| | - Patrick Buckley
- Department of Pathology, Duke University Medical Center, Durham, NC
| | | | - Andrew J Carroll
- Department of Genetics, Children's Hospital of Alabama, Birmingham, AL
| | - Julie M Gastier-Foster
- Department of Pathology and Laboratory Medicine, Nationwide Children's Hospital, Ohio State University College of Medicine, Columbus, OH.,Departments of Pathology and Pediatrics, Ohio State University College of Medicine, Columbus, OH
| | - Nyla A Heerema
- Department of Pathology, Wexner Medical Center, Ohio State University, Columbus, OH
| | | | - Yousif H Matloub
- Case Western Reserve University School of Medicine, Cleveland, OH
| | - David T Marshall
- Department of Radiation Oncology, Medical University of South Carolina, Charleston, SC
| | - Linda C Stork
- Department of Pediatrics, Oregon Health and Science University, Portland, OR
| | - Mignon L Loh
- Department of Pediatrics, Benioff Children's Hospital and the Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
| | - Elizabeth A Raetz
- Perlmutter Cancer Center and Department of Pediatrics, NYU Langone Medical Center, New York, NY
| | - Brent L Wood
- Departments of Pathology and Medicine, University of Washington, Seattle, WA
| | - Stephen P Hunger
- Department of Pediatrics and The Center for Childhood Cancer Research, Children's Hospital of Philadelphia and the Perelman School of Medicine at The University of Philadelphia, Philadelphia, PA
| | - William L Carroll
- Perlmutter Cancer Center and Department of Pediatrics, NYU Langone Medical Center, New York, NY
| | - Naomi J Winick
- Department of Pediatrics, UT Southwestern, Simmons Cancer Center, Dallas, TX
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17
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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] [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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18
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Berry NK, Scott RJ, Sutton R, Law T, Trahair TN, Dalla-Pozza L, Ritchie P, Barbaric D, Enjeti AK. Enrichment of atypical hyperdiploidy and IKZF1 deletions detected by SNP-microarray in high-risk Australian AIEOP-BFM B-cell acute lymphoblastic leukaemia cohort. Cancer Genet 2020; 242:8-14. [PMID: 32058318 DOI: 10.1016/j.cancergen.2020.01.051] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 01/11/2020] [Accepted: 01/28/2020] [Indexed: 02/07/2023]
Abstract
Acute lymphoblastic leukaemia (ALL) is the most common childhood malignancy with the majority of patients being classified as B-cell lineage (B-ALL). The sub-classification of B-ALL is based on genomic architecture. Recent studies have demonstrated the capability of SNP-microarrays to detect genomic changes in B-ALL which cannot be observed by conventional cytogenetic methods. In current clinical trials, B-ALL patients at high risk of relapse are mainly identified by adverse cancer genomics and/or poor response to early therapy. To test the hypothesis that inclusion of SNP-microarrays in frontline diagnostics could more efficiently and accurately identify adverse genomic factors than conventional techniques, we evaluated the Australian high-risk B-ALL cohort enrolled on AIEOP-BFM ALL 2009 study (n = 33). SNP-microarray analysis identified additional aberrations in 97% of patients (32/33) compared to conventional techniques. This changed the genomic risk category of 24% (8/33) of patients. Additionally, 27% (9/33) of patients exhibited a 'hyperdiploid' genome, which is generally associated with a good genomic risk and favourable outcomes. An enrichment of IKZF1 deletions was observed with one third of the cohort affected. Our findings suggest the current classification system could be improved and highlights the need to use more sensitive techniques such as SNP-microarray for cytogenomic risk stratification in B-ALL.
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Affiliation(s)
- Nadine K Berry
- Department of Haematology, Calvary Mater Hospital, Newcastle, New South Wales, Australia; School of Biomedical Sciences and Pharmacy, University of Newcastle, New South Wales, Australia; Department of Molecular Medicine, NSW Health Pathology-Hunter, Newcastle, New South Wales, Australia.
| | - Rodney J Scott
- School of Biomedical Sciences and Pharmacy, University of Newcastle, New South Wales, Australia; Department of Molecular Medicine, NSW Health Pathology-Hunter, Newcastle, New South Wales, Australia
| | - Rosemary Sutton
- Children's Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, Randwick, Australia; School of Women's and Children's Health, UNSW Medicine, Randwick, Australia
| | - Tamara Law
- Children's Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, Randwick, Australia
| | - Toby N Trahair
- Children's Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, Randwick, Australia; School of Women's and Children's Health, UNSW Medicine, Randwick, Australia; Kids Cancer Centre, Sydney Children's Hospital, Randwick Australia
| | - Luce Dalla-Pozza
- Cancer Centre for Children, The Children's Hospital at Westmead, Australia
| | - Petra Ritchie
- Women's and Children's Hospital, SA Pathology, University of Adelaide, Adelaide, Australia
| | - Draga Barbaric
- School of Women's and Children's Health, UNSW Medicine, Randwick, Australia; Kids Cancer Centre, Sydney Children's Hospital, Randwick Australia
| | - Anoop K Enjeti
- Department of Haematology, Calvary Mater Hospital, Newcastle, New South Wales, Australia; School of Medicine and Public Health, University Newcastle, New South Wales, Australia; Department of Haematology, NSW Health Pathology-Hunter, Newcastle, New South Wales, Australia
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19
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Lejman M, Zawitkowska J, Styka B, Babicz M, Winnicka D, Zaucha-Prażmo A, Pastorczak A, Taha J, Młynarski W, Kowalczyk JR. Microarray testing as an efficient tool to redefine hyperdiploid paediatric B-cell precursor acute lymphoblastic leukaemia patients. Leuk Res 2019; 83:106163. [PMID: 31202078 DOI: 10.1016/j.leukres.2019.05.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 05/24/2019] [Accepted: 05/25/2019] [Indexed: 11/15/2022]
Abstract
The aim of our study was to characterize genetic alterations in a cohort of paediatric patients with B-cell progenitors (BCP-ALL) and a hyperdiploid karyotype. In our study, we analysed 55 childhood hyperdiploid BCP-ALL patients using single nucleotide polymorphism (SNP) microarray testing. The group consisted mostly of patients with the modal number of chromosomes between 54 and 58 (34 cases). Within this group, Trisomy 4 and Trisomy 10 (30 cases) were the most frequent cases. Additionally, a total of 93 structural abnormalities mainly affecting chromosomes 1, 6, 9, 12, and 17 as well as 68 copy number alterations (CNAs) were identified. The microarray testing revealed a loss of ETV6, IKZF1, CDKN2A/CDKN2B, PAX5, and RB1. Moreover, chromosomal abnormalities resulting in the loss of heterozygosity (LOH) were also observed. Currently, patients with hyperdiploidy constitute a genetically heterogeneous group, and therefore, it is insufficient to rely only on banding cytogenetic analysis for the identification of hyperdiploid karyotype. Microarray testing has been proven an effective and satisfactory tool for the analysis of molecular karyotypes and to redefine the prognostic criteria in hyperdiploid patients.
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Affiliation(s)
- Monika Lejman
- Laboratory of Genetic Diagnostics, Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, Poland
| | - Joanna Zawitkowska
- Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, Poland
| | - Borys Styka
- Laboratory of Genetic Diagnostics, University Children's Hospital, Lublin, Poland
| | - Mariusz Babicz
- Laboratory of Genetic Diagnostics, University Children's Hospital, Lublin, Poland
| | - Dorota Winnicka
- Laboratory of Genetic Diagnostics, Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, Poland
| | - Agnieszka Zaucha-Prażmo
- Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, Poland
| | - Agata Pastorczak
- Department of Pediatric, Oncology, Hematology and Diabetology, Medical University of Łódź, Poland
| | - Joanna Taha
- Department of Pediatric, Oncology, Hematology and Diabetology, Medical University of Łódź, Poland
| | - Wojciech Młynarski
- Department of Pediatric, Oncology, Hematology and Diabetology, Medical University of Łódź, Poland
| | - Jerzy R Kowalczyk
- Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, Poland
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20
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Kim H. Advances in the Treatment of Childhood Acute Lymphoblastic Leukemia. CLINICAL PEDIATRIC HEMATOLOGY-ONCOLOGY 2019. [DOI: 10.15264/cpho.2019.26.1.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Hyery Kim
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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21
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Refining risk classification in childhood B acute lymphoblastic leukemia: results of DFCI ALL Consortium Protocol 05-001. Blood Adv 2019; 2:1449-1458. [PMID: 29941458 DOI: 10.1182/bloodadvances.2018016584] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 05/19/2018] [Indexed: 01/11/2023] Open
Abstract
Dana-Farber Cancer Institute (DFCI) ALL Consortium Protocol 05-001 tested a new risk stratification system in children and adolescents with newly diagnosed acute lymphoblastic leukemia (ALL). At study entry, B-ALL patients were classified as standard risk (SR) or high risk (HR) based on age, white blood cell (WBC) count, and central nervous system status. After achieving complete remission (CR), patients with high end-induction minimal residual disease (MRD) (≥10-3 by polymerase chain reaction analysis of patient-specific antigen receptor rearrangements) and/or adverse cytogenetics (KMT2A rearrangement or hypodiploidy) were reclassified as very high risk (VHR) and received intensified therapy. IKZF1 deletion status was retrospectively evaluated by multiplex ligation-dependent probe amplification. Between 2005 and 2011, 678 Philadelphia chromosome-negative B-ALL patients aged 1 to 18 years enrolled; 651 achieved CR and 648 received a final risk group. Among all 678 patients, 5-year event-free survival (EFS) was 87% (95% confidence interval [CI], 84-89) and overall survival 93% (95% CI, 90-94). Five-year disease-free survival of SR patients (N = 407) was 94% (95% CI, 91-96), HR (N = 176) was 84% (95% CI, 77-88), and VHR (N = 65) was 79% (95% CI, 67-87). IKZF1 deletion was present in 62 of 385 (16%) assessed patients and was associated with inferior 5-year EFS (63%; 95% CI, 49%-74% vs 88%; 95% CI, 84%-91%; P < .001), and higher 5-year cumulative incidence of relapse, including among those with low MRD (24% vs 8%, P = .001). In multivariable analysis, age ≥15 years, WBC ≥50 × 109/L, IKZF1 deletion, and MRD ≥10-4 was each associated with inferior outcome. In conclusion, risk-stratified therapy on DFCI 05-001 resulted in favorable outcomes for B-ALL patients, including those with VHR features. IKZF1 deletion was an independent predictor of inferior outcome. This trial was registered at www.clinicaltrials.gov as #NCT00400946.
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22
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Cohen CT, Bergstrom KL, Xiao R, Elghetany MT, Iacobas I, Sasa G. First case of neutropenia and thrombocytopenia in the setting of cerebral cavernous malformation 3. Int J Hematol 2019; 110:95-101. [PMID: 30904992 DOI: 10.1007/s12185-019-02626-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 03/04/2019] [Accepted: 03/05/2019] [Indexed: 11/25/2022]
Abstract
Cerebral cavernous malformation 3 (CCM3) is a vascular malformation disorder causing brain slow-flow vascular parenchymal lesions. These lesions are the result of variants in the Programmed Cell Death Protein 10 (PDCD10) gene, located on 3q26.1. We report an 8-month-old patient who was presented with seizures and intracranial abscesses and was found to have a variant of PDCD10 on whole exome sequencing, representing, to our knowledge, the youngest case of CCM3 described in the literature. Her clinical course was complicated by the development of neutropenia, requiring granulocyte colony-stimulating factor, and thrombocytopenia, requiring intermittent platelet transfusions, with later development of B acute lymphoblastic leukemia 2 years after initial presentation. This case represents the first description in the literature of hematologic complications in the setting of CCM3. We hypothesize that these hematological manifestations are the result of alterations in the actin and microtubule cytoskeleton, affecting the process of hematopoiesis in a similar fashion to the documented effect of the PDCD10 variant on neuronal migration.
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Affiliation(s)
- Clay Travis Cohen
- Department of Pediatrics, Section of Hematology-Oncology, Texas Children's Cancer and Hematology Center, Baylor College of Medicine, Texas Children's Hospital, 1102 Bates St. Ste. C1025, Houston, TX, 77030, USA.
| | - Katie Lee Bergstrom
- Department of Pediatrics, Section of Hematology-Oncology, Texas Children's Cancer and Hematology Center, Baylor College of Medicine, Texas Children's Hospital, 1102 Bates St. Ste. C1025, Houston, TX, 77030, USA
| | - Rui Xiao
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Mohamed Tarek Elghetany
- Department of Pathology and Immunology, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA
| | - Ionela Iacobas
- Department of Pediatrics, Section of Hematology-Oncology, Texas Children's Cancer and Hematology Center, Baylor College of Medicine, Texas Children's Hospital, 1102 Bates St. Ste. C1025, Houston, TX, 77030, USA
| | - Ghadir Sasa
- Department of Pediatrics, Section of Hematology-Oncology, Texas Children's Cancer and Hematology Center, Baylor College of Medicine, Texas Children's Hospital, 1102 Bates St. Ste. C1025, Houston, TX, 77030, USA
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23
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Groeneveld‐Krentz S, Schroeder MP, Reiter M, Pogodzinski MJ, Pimentel‐Gutiérrez HJ, Vagkopoulou R, Hof J, Chen‐Santel C, Nebral K, Bradtke J, Türkmen S, Baldus CD, Gattenlöhner S, Haas OA, Stackelberg A, Karawajew L, Eckert C, Kirschner‐Schwabe R. Aneuploidy in children with relapsed B‐cell precursor acute lymphoblastic leukaemia: clinical importance of detecting a hypodiploid origin of relapse. Br J Haematol 2019; 185:266-283. [DOI: 10.1111/bjh.15770] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 11/05/2018] [Indexed: 12/17/2022]
Affiliation(s)
| | - Michael P. Schroeder
- Department of Haematology/Oncology Charité Universitätsmedizin Berlin Berlin Germany
| | - Michael Reiter
- Institute of Visual Computing & Human‐Centered Technology Vienna University of Technology Vienna Austria
| | - Malwine J. Pogodzinski
- Department of Paediatric Oncology/Haematology Charité Universitätsmedizin Berlin Berlin Germany
| | | | - Renia Vagkopoulou
- Department of Paediatric Oncology/Haematology Charité Universitätsmedizin Berlin Berlin Germany
| | - Jana Hof
- Department of Paediatric Oncology/Haematology Charité Universitätsmedizin Berlin Berlin Germany
| | - Christiane Chen‐Santel
- Department of Paediatric Oncology/Haematology Charité Universitätsmedizin Berlin Berlin Germany
| | - Karin Nebral
- Children's Cancer Research Institute St. Anna Kinderkrebsforschung Vienna Austria
| | - Jutta Bradtke
- Department of Pathology University of Gießen Gießen Germany
| | - Seval Türkmen
- Labor Berlin Charité Vivantes Berlin Germany
- Institute of Medical Genetics and Human Genetics Charité Universitätsmedizin Berlin Berlin Germany
| | - Claudia D. Baldus
- Department of Haematology/Oncology Charité Universitätsmedizin Berlin Berlin Germany
| | | | - Oskar A. Haas
- Children's Cancer Research Institute St. Anna Kinderkrebsforschung Vienna Austria
- St. Anna Children's Hospital Medical University of Vienna Austria
| | - Arend Stackelberg
- Department of Paediatric Oncology/Haematology Charité Universitätsmedizin Berlin Berlin Germany
| | - Leonid Karawajew
- Department of Paediatric Oncology/Haematology Charité Universitätsmedizin Berlin Berlin Germany
| | - Cornelia Eckert
- Department of Paediatric Oncology/Haematology Charité Universitätsmedizin Berlin Berlin Germany
- German Cancer Consortium (DKTK), and German Research Center (DKFZ) Heidelberg Germany
| | - Renate Kirschner‐Schwabe
- Department of Paediatric Oncology/Haematology Charité Universitätsmedizin Berlin Berlin Germany
- German Cancer Consortium (DKTK), and German Research Center (DKFZ) Heidelberg Germany
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24
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Abstract
Treatment outcomes for acute lymphoblastic leukemia (ALL), especially pediatric ALL, have greatly improved due to the risk-adapted therapy. Combination of drug development, clinical practice, as well as basic genetic researches has brought the survival rate of ALL from less than 10% to more than 90% today, not only increasing the treatment efficacy but also limiting adverse drug reactions (ADRs). In this review, we summarized the landscape identification of ALL genetic alterations, which provided the opportunity to increase the survival rate and especially minimize the relapse risk of ALL, and highlighted the importance of the development of new technologies of genomic investigation for translational medicine.
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25
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Cao P, Yu Y, Wang W, Xu H, He Y. Fluorescence in situ hybridization comparison of the prognostic factors in adult and pediatric acute lymphoblastic leukemia: A retrospective analysis of 282 cases. Exp Ther Med 2018; 16:4674-4684. [PMID: 30542419 PMCID: PMC6257547 DOI: 10.3892/etm.2018.6821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 08/31/2018] [Indexed: 11/13/2022] Open
Abstract
Acute lymphoblastic leukemia (ALL) affects both children and adults. However, the prognosis of the two cohorts is quite different. The present aim was to review and evaluate one potential cause of why survival is poorer in adult ALL than pediatric ALL via fluorescence in situ hybridization (FISH). Clinical significant features were analyzed in 282 ALL cases. FISH was performed to study mixed lineage leukemia (MLL) translocation and the Philadelphia (Ph) chromosome in newly diagnosed patients, and was used to detect trisomy 4 or 10 and the translocation ETS leukemia-acute myeloid leukemia 1 (TEL-AML1) fusion gene. The overall survival/event-free survival (OS/EFS) outcome of adult ALL and pediatric ALL was analyzed using Kaplan-Meier analysis. Adult ALL had a higher median leukocyte count and lower hemoglobin level than pediatric ALL. FISH revealed that Ph positivity (Ph+) was associated with the high-risk feature of older age. In pediatric ALL, trisomy 4 or 10 was present in 71/207 cases (34.3%), while the TEL-AML1 fusion gene was present in 16/207 cases (7.7%). By contrast, there were very few such positive cases in adult ALL. Survival analysis revealed that, in adult ALL, the 3-year OS and EFS rates were higher in the Ph-negative group than in the Ph+ group. Adult or pediatric ALL is an independent prognostic factor of OS. The present analysis of the clinical and biological features between adult and pediatric ALL indicates that adult ALL has a poorer prognosis than pediatric ALL based on Ph+ status and presence of trisomy 4 or 10. Ph+ ALL is an independent prognosis factor of ALL. FISH may serve an important role in the comparison of prognostic factors in adult and pediatric ALL.
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Affiliation(s)
- Pengfei Cao
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China.,Cancer Research Institute, Key Laboratory of Carcinogenesis, Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Yalan Yu
- Department of Hematology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Wei Wang
- Cancer Research Institute, Key Laboratory of Carcinogenesis, Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - He Xu
- Cancer Research Institute, Key Laboratory of Carcinogenesis, Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Yuxiang He
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
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26
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Kato M, Manabe A. Treatment and biology of pediatric acute lymphoblastic leukemia. Pediatr Int 2018; 60:4-12. [PMID: 29143423 DOI: 10.1111/ped.13457] [Citation(s) in RCA: 155] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 10/26/2017] [Accepted: 11/10/2017] [Indexed: 12/12/2022]
Abstract
Acute lymphoblastic leukemia (ALL) is the most common pediatric malignancy. In the past ALL was intractable but now the survival probability is as high as 80-90%. Improved supportive care, treatment stratification based on relapse risk, biological features of leukemic cells, and optimization of treatment regimens by nationwide and international collaboration have contributed to this dramatic improvement. While including traditional risk factors (e.g. age and leukocyte count at diagnosis), the treatment has been modified based on biological characteristics (aneuploidy and translocation) and treatment response (assessed by minimal residual disease). Treatment for pediatric ALL typically consists of induction therapy with steroids, vincristine, and asparaginase with or without anthracycline, followed by multi-agent consolidation including high-dose methotrexate and re-induction therapy. After consolidation, less intensive maintenance therapy is required for 1-2 years to maintain event-free survival. Recently, using advanced genomic analysis technology, novel sentinel genomic alterations that may provide more precise stratification or therapeutic targets, were identified. Moreover, in the last decade germline variations have been recognized as similarly important contributors to understanding the etiology and sensitivity of ALL to treatment. A more individualized approach based on genomic features (somatic and germline) and treatment response, the introduction of newly developed agents such as molecular targeted drugs or immunotherapy, and social support including long-term follow up are required for further improvement.
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Affiliation(s)
- Motohiro Kato
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Tokyo, Japan.,Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan
| | - Atsushi Manabe
- Department of Pediatrics, St Luke's International Hospital, Tokyo, Japan.,Research Center, St Luke's International University, Tokyo, Japan
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27
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Measurable residual disease detection by high-throughput sequencing improves risk stratification for pediatric B-ALL. Blood 2017; 131:1350-1359. [PMID: 29284596 DOI: 10.1182/blood-2017-09-806521] [Citation(s) in RCA: 133] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 12/12/2017] [Indexed: 12/13/2022] Open
Abstract
Early response to induction chemotherapy is an important prognostic factor in B-lymphoblastic leukemia (B-ALL). Here, we compare high-throughput sequencing (HTS) of IGH and TRG genes vs flow cytometry (FC) for measurable residual disease (MRD) detection at the end of induction chemotherapy in pediatric patients with newly diagnosed B-ALL. Six hundred nineteen paired pretreatment and end-of-induction bone marrow samples from Children's Oncology Group studies AALL0331 (clinicaltrials.gov #NCT00103285) (standard risk [SR]; with MRD by FC at any level) and AALL0232 (clinicaltrials.gov #NCT00075725) (high risk; with day 29 MRD <0.1% by FC) were evaluated by HTS and FC for event-free (EFS) and overall survival (OS). HTS and FC showed similar 5-year EFS and OS for MRD-positive and -negative patients using an MRD threshold of 0.01%. However, there was a high discordant rate with HTS identifying 55 (38.7%) more patients MRD positive at this threshold. These discrepant patients have worse outcomes than FC MRD-negative patients. In addition, the increased analytic sensitivity of HTS permitted identification of 19.9% of SR patients without MRD at any detectable level who had excellent 5-year EFS (98.1%) and OS (100%). The higher analytic sensitivity and lower false-negative rate of HTS improves upon FC for MRD detection in pediatric B-ALL by identifying a novel subset of patients at end of induction who are essentially cured using current chemotherapy and identifying MRD at 0.01% in up to one-third of patients who are missed at the same threshold by FC.
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28
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Impact of cytogenetic abnormalities in adults with Ph-negative B-cell precursor acute lymphoblastic leukemia. Blood 2017; 130:1832-1844. [DOI: 10.1182/blood-2017-05-783852] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 07/17/2017] [Indexed: 02/05/2023] Open
Abstract
Abstract
Multiple cytogenetic subgroups have been described in adult Philadelphia chromosome (Ph)-negative B-cell precursor (BCP) acute lymphoblastic leukemia (ALL), often comprising small numbers of patients. In this study, we aimed to reassess the prognostic value of cytogenetic abnormalities in a large series of 617 adult patients with Ph-negative BCP-ALL (median age, 38 years), treated in the intensified Group for Research on Adult Acute Lymphoblastic Leukemia (GRAALL)-2003/2005 trials. Combined data from karyotype, DNA index, fluorescence in situ hybridization, and polymerase chain reaction screening for relevant abnormalities were centrally reviewed and were informative in 542 cases (88%), allowing classification in 10 exclusive primary cytogenetic subgroups and in secondary subgroups, including complex and monosomal karyotypes. Prognostic analyses focused on cumulative incidence of failure (including primary refractoriness and relapse), event-free survival, and overall survival. Only 2 subgroups, namely t(4;11)/KMT2A-AFF1 and 14q32/IGH translocations, displayed a significantly worse outcome in this context, still observed after adjustment for age and after censoring patients who received allogeneic stem cell transplantation (SCT) in first remission at SCT time. A worse outcome was also observed in patients with low hypodiploidy/near triploidy, but this was likely related to their higher age and worse tolerance to therapy. The other cytogenetic abnormalities, including complex and monosomal karyotypes, had no prognostic value in these intensive protocols designed for adult patients up to the age of 60 years.
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29
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Zhang X, Rastogi P, Shah B, Zhang L. B lymphoblastic leukemia/lymphoma: new insights into genetics, molecular aberrations, subclassification and targeted therapy. Oncotarget 2017; 8:66728-66741. [PMID: 29029550 PMCID: PMC5630450 DOI: 10.18632/oncotarget.19271] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 05/07/2017] [Indexed: 12/18/2022] Open
Abstract
B lymphoblastic leukemia/lymphoma (B-ALL) is a clonal hematopoietic stem cell neoplasm derived from B-cell progenitors, which mostly occurs in children and adolescents and is regarded as one of top leading causes of death related to malignancies in this population. Despite the majority of patients with B-ALL have fairly good response to conventional chemotherapeutic interventions followed by hematopoietic stem cell transplant for the last decades, a subpopulation of patients show chemo-resistance and a high relapse rate. Adult B-ALL exhibits similar clinical course but worse prognosis in comparison to younger individuals. Ample evidences have shown that the clinical behavior, response rate and clinical outcome of B-ALL rely largely on its genetic and molecular profiles, such as the presence of BCR-ABL1 fusion gene which is an independent negative prognostic predictor. New B-ALL subtypes have been recognized with recurrent genetic abnormalities, including B-ALL with intrachromosomal amplification of chromosome 21 (iAMP21), B-ALL with translocations involving tyrosine kinases or cytokine receptors (“BCR-ABL1-like ALL”). Genome-wide genetic profiling studies on B-ALL have extended our understanding of genomic landscape of B-ALL, and genetic mutations involved in various key pathways have been illustrated. These include CRLF2 and PAX5 alterations, TP53, CREBBP and ERG mutations, characteristic genetic aberrations in BCR-ABL1-like B-ALL and others. The review further provides new insights into clinical implication of the genetic aberrations in regard to targeted therapy development.
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Affiliation(s)
- Xiaohui Zhang
- Department of Hematopathology and Laboratory Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Prerna Rastogi
- Department of Pathology, University of Iowa College of Medicine, Iowa City, Iowa, USA
| | - Bijal Shah
- Department of Hematological Malignancies, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Ling Zhang
- Department of Hematopathology and Laboratory Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
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30
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Meyer JA, Zhou D, Mason CC, Downie JM, Rodic V, Abromowitch M, Wistinghausen B, Termuhlen AM, Angiolillo AL, Perkins SL, Lones MA, Barnette P, Schiffman JD, Miles RR. Genomic characterization of pediatric B-lymphoblastic lymphoma and B-lymphoblastic leukemia using formalin-fixed tissues. Pediatr Blood Cancer 2017; 64. [PMID: 27957801 DOI: 10.1002/pbc.26363] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 10/25/2016] [Accepted: 10/26/2016] [Indexed: 01/04/2023]
Abstract
BACKGROUND Recurrent genomic changes in B-lymphoblastic leukemia (B-ALL) identified by genome-wide single-nucleotide polymorphism (SNP) microarray analysis provide important prognostic information, but gene copy number analysis of its rare lymphoma counterpart, B-lymphoblastic lymphoma (B-LBL), is limited by the low incidence and lack of fresh tissue for genomic testing. PROCEDURE We used molecular inversion probe (MIP) technology to analyze and compare copy number alterations (CNAs) in archival formalin-fixed paraffin-embedded pediatric B-LBL (n = 23) and B-ALL (n = 55). RESULTS Similar to B-ALL, CDKN2A/B deletions were the most common alteration identified in 6/23 (26%) B-LBL cases. Eleven of 23 (48%) B-LBL patients were hyperdiploid, but none showed triple trisomies (chromosomes 4, 10, and 17) characteristic of B-ALL. IKZF1 and PAX5 deletions were observed in 13 and 17% of B-LBL, respectively, which was similar to the reported frequency in B-ALL. Immunoglobulin light chain lambda (IGL) locus deletions consistent with normal light chain rearrangement were observed in 5/23 (22%) B-LBL cases, compared with only 1% in B-ALL samples. None of the B-LBL cases showed abnormal, isolated VPREB1 deletion adjacent to IGL locus, which we identified in 25% of B-ALL. CONCLUSIONS Our study demonstrates that the copy number profile of B-LBL is distinct from B-ALL, suggesting possible differences in pathogenesis between these closely related diseases.
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Affiliation(s)
- Julia A Meyer
- Department of Oncological Sciences, University of Utah, Salt Lake City, Utah
- Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah
| | - Delu Zhou
- Department of Pathology, University of Utah, Salt Lake City, Utah
| | - Clinton C Mason
- Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Jonathan M Downie
- Department of Human Genetics, University of Utah, Salt Lake City, Utah
| | - Vladimir Rodic
- Department of Pathology, University of Utah, Salt Lake City, Utah
| | - Minnie Abromowitch
- Department of Pediatrics, University of Nebraska Medical Center, Omaha, Nebraska
| | - Birte Wistinghausen
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Amanda M Termuhlen
- Department of Pediatrics, Keck School of Medicine at the University of Southern California, Children's Hospital Los Angeles, Los Angeles, California
| | - Anne L Angiolillo
- Division of Oncology, Center for Cancer and Blood Disorders, Children's National Medical Center, Washington, District of Columbia
| | - Sherrie L Perkins
- Department of Pathology, University of Utah, Salt Lake City, Utah
- ARUP Institute for Experimental Pathology, Salt Lake City, Utah
| | - Mark A Lones
- Department of Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, California
| | - Phillip Barnette
- Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Joshua D Schiffman
- Department of Oncological Sciences, University of Utah, Salt Lake City, Utah
- Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah
- Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Rodney R Miles
- Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah
- Department of Pathology, University of Utah, Salt Lake City, Utah
- ARUP Institute for Experimental Pathology, Salt Lake City, Utah
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31
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Reismüller B, Steiner M, Pichler H, Dworzak M, Urban C, Meister B, Schmitt K, Pötschger U, König M, Mann G, Haas OA, Attarbaschi A. High hyperdiploid acute lymphoblastic leukemia (ALL)-A 25-year population-based survey of the Austrian ALL-BFM (Berlin-Frankfurt-Münster) Study Group. Pediatr Blood Cancer 2017; 64. [PMID: 27804199 DOI: 10.1002/pbc.26327] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Revised: 09/29/2016] [Accepted: 10/03/2016] [Indexed: 12/14/2022]
Abstract
BACKGROUND Approximately 30% of childhood acute lymphoblastic leukemia (ALL) cases are high hyperdiploid (HD). Despite their low relative recurrence risk, this group accounts for the overall largest relapse proportion. PROCEDURE To evaluate potential risk factors in our population-based cohort of patients with HD ALL enrolled in four Austrian ALL-BFM (Berlin-Frankfurt-Münster) studies from 1986 to 2010 (n = 210), we reviewed the clinical, laboratory, and cytogenetic data of the respective cases in relation to their outcome. RESULTS The 5-year event-free (EFS) and overall survival (OS) of the entire group was 83.1 ± 2.7% and 92.0 ± 1.9%, respectively. Univariate analysis revealed that trisomy 17 was significantly associated with a better EFS and OS, whereas trisomy 10 and a modal chromosome number (MCN) > 53 chromosomes were significantly associated with a better OS. Except for the latter, findings remained valid in multivariate analysis. CONCLUSIONS In line with previous studies, our retrospective analysis shows that MCN and specific trisomies are relevant prognostic indicators in an ALL-BFM cohort of patients with HD ALL. However, considering the current dominant role of minimal residual disease monitoring for prognostic stratification in ALL, including this particular subgroup, it is unlikely that this information is compelling enough to be utilized for refined risk classification in future ALL-BFM treatment protocols.
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Affiliation(s)
- Bettina Reismüller
- Division of Pediatric Hematology and Oncology, Department of Pediatric and Adolescent Medicine, St. Anna Children's Hospital, Medical University of Vienna, Vienna, Austria
| | - Manuel Steiner
- Division of Pediatric Hematology and Oncology, Department of Pediatric and Adolescent Medicine, St. Anna Children's Hospital, Medical University of Vienna, Vienna, Austria
| | - Herbert Pichler
- Division of Pediatric Hematology and Oncology, Department of Pediatric and Adolescent Medicine, St. Anna Children's Hospital, Medical University of Vienna, Vienna, Austria
| | - Michael Dworzak
- Division of Pediatric Hematology and Oncology, Department of Pediatric and Adolescent Medicine, St. Anna Children's Hospital, Medical University of Vienna, Vienna, Austria.,Children's Cancer Research Institute (CCRI), St. Anna Kinderkrebsforschung, Vienna, Austria
| | - Christian Urban
- Division of Pediatric Hematology and Oncology, Department of Pediatric and Adolescent Medicine, Medical University of Graz, Graz, Austria
| | - Bernhard Meister
- Department of Pediatrics, University of Innsbruck, Innsbruck, Austria
| | - Klaus Schmitt
- Department of Pediatrics and Adolescent Medicine, Kepler University Hospital, Linz, Austria
| | - Ulrike Pötschger
- Children's Cancer Research Institute (CCRI), St. Anna Kinderkrebsforschung, Vienna, Austria
| | - Margit König
- Children's Cancer Research Institute (CCRI), St. Anna Kinderkrebsforschung, Vienna, Austria
| | - Georg Mann
- Division of Pediatric Hematology and Oncology, Department of Pediatric and Adolescent Medicine, St. Anna Children's Hospital, Medical University of Vienna, Vienna, Austria
| | - Oskar A Haas
- Division of Pediatric Hematology and Oncology, Department of Pediatric and Adolescent Medicine, St. Anna Children's Hospital, Medical University of Vienna, Vienna, Austria.,Children's Cancer Research Institute (CCRI), St. Anna Kinderkrebsforschung, Vienna, Austria
| | - Andishe Attarbaschi
- Division of Pediatric Hematology and Oncology, Department of Pediatric and Adolescent Medicine, St. Anna Children's Hospital, Medical University of Vienna, Vienna, Austria
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32
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Abstract
Both B-cell and T-cell acute lymphoblastic leukemia (ALL) exhibit recurrent cytogenetic alterations, many with prognostic implications. This chapter overviews the major recurrent categories of cytogenetic abnormalities associated with ALL, with an emphasis on the detection and characterization of these cases by G-band and FISH analyses.
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33
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Jacobson S, Tedder M, Eggert J. Adult Acute Lymphoblastic Leukemia: A Genetic Overview and Application to Clinical Practice. Clin J Oncol Nurs 2016; 20:E147-E154. [DOI: 10.1188/16.cjon.e147-e154] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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34
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Vojcek Á, Pajor G, Alpár D, Mátics R, Pótó L, Szuhai K, Pajor L. Conserved hierarchical gain of chromosome 4 is an independent prognostic factor in high hyperdiploid pediatric acute lymphoblastic leukemia. Leuk Res 2016; 52:28-33. [PMID: 27870946 DOI: 10.1016/j.leukres.2016.11.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 11/09/2016] [Accepted: 11/10/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND High hyperdiploid (HeH) pre-B pediatric acute lymphoblastic leukemia (B-pALL) is known to be heterogeneous by prognosis, but the stratification principals according to conventional cytogenetic analysis (CCA) are equivocal. PROCEDURE Untreated bone marrow samples of 214 B-pALL patients were previously classified according to the modal numbers (iMN8) based on the gains of the chromosomes 4, 6, 10, 14, 17, 18, 21, and X as revealed by consecutive and correlated 2×4 color interphase fluorescence in situ hybridization, and at least five years of follow up data were analyzed. RESULTS Data from 48 of the 53 HeH (iMN8>50) B-pALL patients indicated that among the age, gender, WBC, and iMN8 parameters, only the last was significantly associated with overall survival (pOS), which allowed the cases to be classified as iMN8 51-54 (75%) and iMN8 ≥ 55 (95%). Among the specific chromosomal gains of +4, +4/+6, +4/+17 and +4/+18, the first exhibited the most significance in terms of beneficial outcomes. The better prognostic group according to the iMN8 was associated with a significantly reduced complexity of the subclonal landscape. However, iMN8 did not prove to be an independent variable but was instead overridden by isolated trisomy of chromosome 4. CONCLUSIONS These data indicate that the better outcomes in the HeH B-pALL group arose from the gain of a specific chromosome that always ranks at the same position in the sequential acquisition of the affected chromosomes.
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Affiliation(s)
| | | | | | - R Mátics
- Department of Translational Medicine
| | - L Pótó
- Department of Bioanalysis of the University of Pécs Medical Center, Pécs, Hungary
| | - K Szuhai
- Department of Molecular Cell Biology, Leiden University Medical Center, Leiden, The Netherlands
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Moorman AV. New and emerging prognostic and predictive genetic biomarkers in B-cell precursor acute lymphoblastic leukemia. Haematologica 2016; 101:407-16. [PMID: 27033238 PMCID: PMC5004393 DOI: 10.3324/haematol.2015.141101] [Citation(s) in RCA: 135] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 01/25/2016] [Indexed: 12/19/2022] Open
Abstract
Acute lymphoblastic leukemia (ALL) is a heterogeneous disease at the genetic level. Chromosomal abnormalities are used as diagnostic, prognostic and predictive biomarkers to provide subtype, outcome and drug response information. t(12;21)/ETV6-RUNX1 and high hyper-diploidy are good-risk prognostic biomarkers whereas KMT2A(MLL) translocations, t(17;19)/TCF3-HLF, haploidy or low hypodiploidy are high-risk biomarkers. t(9;22)/BCR-ABL1 patients require targeted treatment (imatinib/dasatinib), whereas iAMP21 patients achieve better outcomes when treated intensively. High-risk genetic biomarkers are four times more prevalent in adults compared to children. The application of genomic technologies to cases without an established abnormality (B-other) reveals copy number alterations which can be used either individually or in combination as prognostic biomarkers. Transcriptome sequencing studies have identified a network of fusion genes involving kinase genes -ABL1,ABL2,PDGFRB,CSF1R,CRLF2,JAK2 and EPOR in-vitro and in-vivo studies along with emerging clinical observations indicate that patients with a kinase-activating aberration may respond to treatment with small molecular inhibitors like imatinib/dasatinib and ruxolitinib. Further work is required to determine the true frequency of these abnormalities across the age spectrum and the optimal way to incorporate such inhibitors into protocols. In conclusion, genetic biomarkers are playing an increasingly important role in the management of patients with ALL.
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MESH Headings
- Antineoplastic Agents/therapeutic use
- B-Lymphocytes/drug effects
- B-Lymphocytes/metabolism
- B-Lymphocytes/pathology
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Chromosomes, Human, Pair 12
- Chromosomes, Human, Pair 21
- Chromosomes, Human, Pair 22
- Chromosomes, Human, Pair 9
- Dasatinib/therapeutic use
- Gene Expression
- Humans
- Imatinib Mesylate/therapeutic use
- Nitriles
- Oncogene Proteins, Fusion/genetics
- Oncogene Proteins, Fusion/metabolism
- Precursor B-Cell Lymphoblastic Leukemia-Lymphoma/diagnosis
- Precursor B-Cell Lymphoblastic Leukemia-Lymphoma/drug therapy
- Precursor B-Cell Lymphoblastic Leukemia-Lymphoma/genetics
- Precursor B-Cell Lymphoblastic Leukemia-Lymphoma/mortality
- Prognosis
- Pyrazoles/therapeutic use
- Pyrimidines
- Survival Analysis
- Translocation, Genetic
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Affiliation(s)
- Anthony V Moorman
- Leukaemia Research Cytogenetics Group, Northern Institute for Cancer Research, Newcastle University, Newcastle-upon-Tyne, UK
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Hakeem A, Shiekh AA, Bhat GM, Lone AR. Prognostification of ALL by Cytogenetics. Indian J Hematol Blood Transfus 2015; 31:322-31. [PMID: 26085716 PMCID: PMC4465518 DOI: 10.1007/s12288-014-0483-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 11/20/2014] [Indexed: 10/24/2022] Open
Abstract
Cytogenetic abnormalities in chromosomal number and structure are common in pediatric ALL and some have prognostic significance. One interesting association between cytogenetic status and treatment response involves the metabolism of methotrexate. Hyperdiploid lymphoblasts accumulate increased amounts of MTX and MTX polyglutamates, and they have higher basal apoptotic rates compared with leukemic cells with lower ploidy and normal cells. These characteristics may contribute to the better outcomes observed for patients with hyperdiploid lymphoblasts. A number of recurrent chromosomal abnormalities have been shown to have prognostic significance, especially in B-precursor ALL. Some chromosomal abnormalities are associated with more favorable outcomes, such as high hyperdiploidy (51-65 chromosomes) and the ETV6-RUNX1 fusion. Others are associated with a poorer prognosis, including the Philadelphia chromosome [t(9;22)], rearrangements of the MLL gene (chromosome 11q23), and intrachromosomal amplification of the AML1 gene (iAMP21).
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Affiliation(s)
- Ansar Hakeem
- Department of Med Oncology, SKIMS SGR, Srinagar, 190011 J And K India
| | - Aejaz Aziz Shiekh
- Department of Med Oncology, SKIMS SGR, Srinagar, 190011 J And K India
| | - Gull Mohd. Bhat
- Department of Med Oncology, SKIMS SGR, Srinagar, 190011 J And K India
| | - A. R. Lone
- Department of Med Oncology, SKIMS SGR, Srinagar, 190011 J And K India
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37
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Fry TJ, Aplan PD. A robust in vivo model for B cell precursor acute lymphoblastic leukemia. J Clin Invest 2015; 125:3427-9. [PMID: 26301807 DOI: 10.1172/jci83799] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
B cell precursor acute lymphoblastic leukemia (BCP ALL) is the most common malignancy in children. While treatments have improved remarkably over the past four decades, resistant disease and late effects that result from cytotoxic chemotherapy remain serious problems for individuals with BCP ALL. Improved genetic tools have led to the discovery of numerous somatic mutations associated with BCP ALL, leading to a framework for the genetic classification of BCP ALL. In this issue of the JCI, Duque-Afonso et al. develop an accurate in vivo model for BCP ALL that recapitulates the key features of human disease, including acquired mutations in genes encoding PAX5 and components of the JAK/STAT pathway. The authors further show, as proof of principle, that this model can be used to evaluate the efficacy of drugs designed to target specific acquired mutations in patients with BCP ALL.
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38
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Survival of Mexican Children with Acute Lymphoblastic Leukaemia under Treatment with the Protocol from the Dana-Farber Cancer Institute 00-01. BIOMED RESEARCH INTERNATIONAL 2015; 2015:576950. [PMID: 25922837 PMCID: PMC4398910 DOI: 10.1155/2015/576950] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 10/03/2014] [Accepted: 10/17/2014] [Indexed: 11/18/2022]
Abstract
Our aim in this paper is to describe the results of treatment of acute lymphoblastic leukaemia (ALL) in Mexican children treated from 2006 to 2010 under the protocol from the Dana-Farber Cancer Institute (DFCI) 00-01. The children were younger than 16 years of age and had a diagnosis of ALL de novo. The patients were classified as standard risk if they were 1–9.9 years old and had a leucocyte count <50 × 109/L, precursor B cell immunophenotype, no mediastinal mass, CSF free of blasts, and a good response to prednisone. The rest of the patients were defined as high risk. Of a total of 302 children, 51.7% were at high risk. The global survival rate was 63.9%, and the event-free survival rate was 52.3% after an average follow-up of 3.9 years. The percentages of patients who died were 7% on induction and 14.2% in complete remission; death was associated mainly with infection (21.5%). The relapse rate was 26.2%. The main factor associated with the occurrence of an event was a leucocyte count >100 × 109/L. The poor outcomes were associated with toxic death during induction, complete remission, and relapse. These factors remain the main obstacles to the success of this treatment in our population.
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Alpár D, Pajor G, Varga P, Kajtár B, Pótó L, Mátics R, Vojcek A, Ottoffy G, Szuhai K, Pajor L. Sequential and hierarchical chromosomal changes and chromosome instability are distinct features of high hyperdiploid pediatric acute lymphoblastic leukemia. Pediatr Blood Cancer 2014; 61:2208-14. [PMID: 25174722 DOI: 10.1002/pbc.25217] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Accepted: 07/17/2014] [Indexed: 12/24/2022]
Abstract
BACKGROUND Pathogenesis of the non-random accumulation of extra chromosomes in the low and high hyperdiploid (HeL, HeH) pre-B pediatric acute lymphoblastic leukemia (B-pALL) is largely unknown, and has been clarified with respect only to tetrasomic chromosomes. We analyzed the hierarchy of changes in chromosome number and chromosomal instability, as well as clonal heterogeneity and evolution, in the untreated bone marrow cell samples from 214 B-pALL patients. PROCEDURE Applying relocation, 2 × 4 color interphase fluorescence in situ hybridization was used to detect copy number alterations (CNAs) of the most commonly involved chromosomes, 4, 6, 10, 14, 17, 18, 21, and X. This approach allowed us to acquire a dataset correlated for all eight parameters. RESULTS Based on chromosome number, an average of 6.9 and 10.2, whereas according to unique constellation 15.3 and 26.7 subclones could be identified in the HeL and HeH subgroups, respectively. Cluster analysis revealed the order of CNAs to chromosomes was highly conserved, and network analysis indicated changes in chromosome number were sequential for 80-90% of all numerical aberrations. Significant chromosome instability was revealed in both subgroups of leukemia. CONCLUSIONS Data generated using this new approach indicate that chromosomal instability, which causes heterogeneity in the subclonal landscape, and the sequential changes to chromosome numbers, are both determining factors in the pathomechanism of the hyperdiploid B-pALL. These new observations could prompt research into the mitotic machinery of leukemic cells to identify new therapeutic targets for treating this disease.
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Affiliation(s)
- Donát Alpár
- Department of Pathology, University of Pécs Medical Center, Pécs, Hungary
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40
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Ceppi F, Cazzaniga G, Colombini A, Biondi A, Conter V. Risk factors for relapse in childhood acute lymphoblastic leukemia: prediction and prevention. Expert Rev Hematol 2014; 8:57-70. [PMID: 25367188 DOI: 10.1586/17474086.2015.978281] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
With current treatment regimens, survival rates for acute lymphoblastic leukemia (ALL) have improved dramatically since the 1980s, with current 5-year overall survival rates estimated at greater than 85%. This success was achieved, in part, through the implementation of risk-stratified therapy. Nevertheless, for a subgroup of patients (15-20%) with newly diagnosed ALL who will ultimately relapse, traditional risk assessment remains inadequate. The risk of relapse may be estimated on the basis of diagnostic features or early treatment response findings. Further progress in this field may thus come from refinement of predictive factors for relapse and treatment adaptation and from the identification of biological subsets of ALL patients who could benefit from specific target therapies. This article summarizes the aspects associated with the identification of predictive factors for relapse in childhood ALL and options available for prevention of disease recurrence.
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Affiliation(s)
- Francesco Ceppi
- Division of Haematology/Oncology, The Hospital for Sick Children and University of Toronto, Toronto, Ontario, Canada
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41
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Ampatzidou M, Panagiotou JP, Paterakis G, Papadakis V, Papadhimitriou SI, Parcharidou A, Papargyri S, Rigatou E, Avgerinou G, Tsitsikas K, Vasdekis V, Haidas S, Polychronopoulou S. Childhood acute lymphoblastic leukemia: 12 years of experience, using a Berlin-Frankfurt-Münster approach, in a Greek center. Leuk Lymphoma 2014; 56:251-5. [PMID: 24766491 DOI: 10.3109/10428194.2014.916801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Maria Ampatzidou
- Department of Pediatric Hematology-Oncology, "Aghia Sophia" Children's Hospital , Athens , Greece
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42
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Kato M, Imamura T, Manabe A, Hashii Y, Koh K, Sato A, Takahashi H, Hori H, Taki T, Inoue M, Hayashi Y, Horibe K, Tsuchida M, Kojima S, Oda M, Ohara A. Prognostic impact of gained chromosomes in high-hyperdiploid childhood acute lymphoblastic leukaemia: a collaborative retrospective study of the Tokyo Children's Cancer Study Group and Japan Association of Childhood Leukaemia Study. Br J Haematol 2014; 166:295-8. [DOI: 10.1111/bjh.12836] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Motohiro Kato
- Department of Cell Therapy and Transplantation Medicine; University of Tokyo; Tokyo Japan
- Department of Paediatrics; University of Tokyo; Tokyo Japan
| | - Toshihiko Imamura
- Department of Paediatrics; Kyoto Prefectural University of Medicine; Kyoto Japan
| | - Atsushi Manabe
- Department of Paediatrics; St. Luke's International Hospital; Tokyo Japan
| | - Yoshiko Hashii
- Department of Developmental Medicine; Osaka University; Osaka Japan
| | - Katsuyoshi Koh
- Department of Haematology/Oncology; Saitama Children's Medical Centre; Saitama Japan
| | - Atsushi Sato
- Department of Haematology/Oncology; Miyagi Children's Hospital; Sendai Japan
| | | | - Hiroki Hori
- Department of Paediatrics; Mie University; Tsu Japan
| | - Tomohiko Taki
- Department of Molecular Diagnostics and Therapeutics; Kyoto Prefectural University of Medicine; Kyoto Japan
| | - Masami Inoue
- Department of Haematology/Oncology; Osaka Medical Centre and Research Institute for Maternal of Child Health; Osaka Japan
| | - Yasuhide Hayashi
- Department of Haematology/Oncology; Gunma Children's Medical Centre; Maebashi Japan
| | - Keizo Horibe
- Clinical Research Centre; National Hospital Organization Nagoya Medical Centre; Nagoya Japan
| | - Masahiro Tsuchida
- Department of Haematology/Oncology; Ibaraki Children's Medical Centre; Mito Japan
| | - Seiji Kojima
- Department of Paediatrics; Nagoya University; Nagoya Japan
| | - Megumi Oda
- Department of Paediatrics; Okayama University; Okayama Japan
| | - Akira Ohara
- Department of Paediatrics; Toho University; Tokyo Japan
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43
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High hyperdiploidy among adolescents and adults with acute lymphoblastic leukaemia (ALL): cytogenetic features, clinical characteristics and outcome. Leukemia 2013; 28:1511-8. [DOI: 10.1038/leu.2013.379] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 12/03/2013] [Accepted: 12/05/2013] [Indexed: 01/09/2023]
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44
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Acute lymphoblastic leukemia (ALL). Mol Oncol 2013. [DOI: 10.1017/cbo9781139046947.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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45
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Abstract
Abstract
Acute lymphoblastic leukemia in childhood has shown remarkable improvements in outcome over the past decades. This achievement was the result of better patient risk assessment, intensification of treatment, appropriate use of BM transplantation, and improved supportive therapies. Among risk factors, early response (originally morphologic and today minimal residual disease) has acquired a prominent role. The predictive value of minimal residual disease evaluation as a measurement of in vivo drug resistance opened new perspectives for its use in clinical evaluation to determine a risk-based treatment and as a potential surrogate end point for efficacy. More recently, detailed genomic analyses of childhood acute lymphoblastic leukemia have increased our knowledge in this disease. It is likely that this will lead to further improvement of risk assessment and stratification to targeted therapies. Leukemic subsets defined on the basis of biological mechanisms and driver mutations will be ever smaller. To facilitate continued progress, this new scenario will raise methodological issues in study design and the need for collaboration across large, well-characterized patient populations.
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46
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An international study of intrachromosomal amplification of chromosome 21 (iAMP21): cytogenetic characterization and outcome. Leukemia 2013; 28:1015-21. [PMID: 24166298 DOI: 10.1038/leu.2013.317] [Citation(s) in RCA: 131] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 10/18/2013] [Accepted: 10/22/2013] [Indexed: 11/08/2022]
Abstract
Intrachromosomal amplification of chromosome 21 (iAMP21) defines a distinct cytogenetic subgroup of childhood B-cell precursor acute lymphoblastic leukaemia (BCP-ALL). To date, fluorescence in situ hybridisation (FISH), with probes specific for the RUNX1 gene, provides the only reliable detection method (five or more RUNX1 signals per cell). Patients with iAMP21 are older (median age 9 years) with a low white cell count. Previously, we demonstrated a high relapse risk when these patients were treated as standard risk. Recent studies have shown improved outcome on intensive therapy. In view of these treatment implications, accurate identification is essential. Here we have studied the cytogenetics and outcome of 530 iAMP21 patients that highlighted the association of specific secondary chromosomal and genetic changes with iAMP21 to assist in diagnosis, including the gain of chromosome X, loss or deletion of chromosome 7, ETV6 and RB1 deletions. These iAMP21 patients when treated as high risk showed the same improved outcome as those in trial-based studies regardless of the backbone chemotherapy regimen given. This study reinforces the importance of intensified treatment to reduce the risk of relapse in iAMP21 patients. This now well-defined patient subgroup should be recognised by World Health Organisation (WHO) as a distinct entity of BCP-ALL.
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47
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Paulsson K, Forestier E, Andersen MK, Autio K, Barbany G, Borgström G, Cavelier L, Golovleva I, Heim S, Heinonen K, Hovland R, Johannsson JH, Kjeldsen E, Nordgren A, Palmqvist L, Johansson B. High modal number and triple trisomies are highly correlated favorable factors in childhood B-cell precursor high hyperdiploid acute lymphoblastic leukemia treated according to the NOPHO ALL 1992/2000 protocols. Haematologica 2013; 98:1424-32. [PMID: 23645689 PMCID: PMC3762100 DOI: 10.3324/haematol.2013.085852] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 04/10/2013] [Indexed: 12/11/2022] Open
Abstract
Between 1992 and 2008, 713 high hyperdiploid acute lymphoblastic leukemias in children aged 1-15 years were diagnosed and treated according to the Nordic Society for Pediatric Hematology and Oncology acute lymphoblastic leukemia 1992/2000 protocols. Twenty (2.8%) harbored t(1;19), t(9;22), der(11q23), or t(12;21). The median age of patients with "classic" high hyperdiploidy was lower than that of patients with translocation-positive high hyperdiploidy (P<0.001). Cases with triple trisomies (+4, +10, +17), comprising 50%, had higher modal numbers than the triple trisomy-negative cases (P<0.0001). The probabilities of event-free survival and overall survival were lower for those with white blood cell counts ≥ 50 × 10(9)/L (P=0.017/P=0.009), ≥ 5% bone marrow blasts at day 29 (P=0.001/0.002), and for high-risk patients (P<0.001/P=0.003), whereas event-free, but not overall, survival, was higher for cases with gains of chromosomes 4 (P<0.0001), 6 (P<0.003), 17 (P=0.010), 18 (P=0.049), and 22 (P=0.040), triple trisomies (P=0.002), and modal numbers >53/55 (P=0.020/0.024). In multivariate analyses, modal number and triple trisomies were significantly associated with superior event-free survival in separate analyses with age and white blood cell counts. When including both modal numbers and triple trisomies, only low white blood cell counts were significantly associated with superior event-free survival (P=0.009). We conclude that high modal chromosome numbers and triple trisomies are highly correlated prognostic factors and that these two parameters identify the same subgroup of patients characterized by a particularly favorable outcome.
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Affiliation(s)
- Kajsa Paulsson
- Division of Clinical Genetics, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Erik Forestier
- Department of Medical Biosciences, University of Umeå, Umeå, Sweden
| | - Mette K. Andersen
- The Cytogenetic Laboratory, The University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Kirsi Autio
- Helsinki and Uusimaa Hospital Group, HUSLAB Laboratory of Genetics, Helsinki, Finland
| | - Gisela Barbany
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Georg Borgström
- Helsinki and Uusimaa Hospital Group, HUSLAB Laboratory of Genetics, Helsinki, Finland
| | - Lucia Cavelier
- Department of Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Irina Golovleva
- Department of Medical Biosciences, Medical and Clinical Genetics, University of Umeå, Umeå, Sweden
| | - Sverre Heim
- Department of Medical Genetics, The Norwegian Radium Hospital, Oslo University Hospital, and Centre for Cancer Biomedicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | | | - Randi Hovland
- Center of Medical Genetics and Molecular Medicine, Haukeland University Hospital, Helse-Bergen HF, Norway
| | - Johann H. Johannsson
- Department of Clinical Genetics and Cytogenetics, University Hospital, Reykjavik, Iceland
| | - Eigil Kjeldsen
- Cancer Cytogenetic Laboratory, Department of Hematology, Aarhus University Hospital, Aarhus, Denmark
| | - Ann Nordgren
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Lars Palmqvist
- Department of Clinical Chemistry and Transfusion Medicine, Sahlgrenska University Hospital, Göteborg, Sweden
| | - Bertil Johansson
- Division of Clinical Genetics, Department of Laboratory Medicine, Lund University, Lund, Sweden
- Department of Clinical Genetics, University and Regional Laboratories Region Skåne, Lund, Sweden
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48
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Teachey DT, Hunger SP. Predicting relapse risk in childhood acute lymphoblastic leukaemia. Br J Haematol 2013; 162:606-20. [PMID: 23808872 DOI: 10.1111/bjh.12442] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Intensive multi-agent chemotherapy regimens and the introduction of risk-stratified therapy have substantially improved cure rates for children with acute lymphoblastic leukaemia (ALL). Current risk allocation schemas are imperfect, as some children are classified as lower-risk and treated with less intensive therapy relapse, while others deemed higher-risk are probably over-treated. Most cooperative groups previously used morphological clearance of blasts in blood and marrow during the initial phases of chemotherapy as a primary factor for risk group allocation; however, this has largely been replaced by the detection of minimal residual disease (MRD). Other than age and white blood cell count (WBC) at presentation, many clinical variables previously used for risk group allocation are no longer prognostic, as MRD and the presence of sentinel genetic lesions are more reliable at predicting outcome. Currently, a number of sentinel genetic lesions are used by most cooperative groups for risk stratification; however, in the near future patients will probably be risk-stratified using genomic signatures and clustering algorithms, rather than individual genetic alterations. This review will describe the clinical, biological, and response-based features known to predict relapse risk in childhood ALL, including those currently used and those likely to be used in the near future to risk-stratify therapy.
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Affiliation(s)
- David T Teachey
- Pediatric Hematology and Oncology, Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
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49
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Asai D, Imamura T, Suenobu SI, Saito A, Hasegawa D, Deguchi T, Hashii Y, Matsumoto K, Kawasaki H, Hori H, Iguchi A, Kosaka Y, Kato K, Horibe K, Yumura-Yagi K, Hara J, Oda M. IKZF1 deletion is associated with a poor outcome in pediatric B-cell precursor acute lymphoblastic leukemia in Japan. Cancer Med 2013; 2:412-9. [PMID: 23930217 PMCID: PMC3699852 DOI: 10.1002/cam4.87] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 04/13/2013] [Accepted: 04/15/2013] [Indexed: 12/26/2022] Open
Abstract
Genetic alterations of Ikaros family zinc finger protein 1 (IKZF1), point mutations in Janus kinase 2 (JAK2), and overexpression of cytokine receptor-like factor 2 (CRLF2) were recently reported to be associated with poor outcomes in pediatric B-cell precursor (BCP)-ALL. Herein, we conducted genetic analyses of IKZF1 deletion, point mutation of JAK2 exon 16, 17, and 21, CRLF2 expression, the presence of P2RY8-CRLF2 fusion and F232C mutation in CRLF2 in 202 pediatric BCP-ALL patients newly diagnosed and registered in Japan Childhood Leukemia Study ALL02 protocol to find out if alterations in these genes are determinants of poor outcome. All patients showed good response to initial prednisolone (PSL) treatment. Ph+, infantile, and Down syndrome–associated ALL were excluded. Deletion of IKZF1 occurred in 19/202 patients (9.4%) and CRLF2 overexpression occurred in 16/107 (15.0%), which are similar to previous reports. Patients with IKZF1 deletion had reduced event-free survival (EFS) and overall survival (OS) compared to those in patients without IKZF1 deletion (5-year EFS, 62.7% vs. 88.8%, 5-year OS, 71.8% vs. 90.2%). Our data also showed significantly inferior 5-year EFS (48.6% vs. 84.7%, log rank P = 0.0003) and 5-year OS (62.3% vs. 85.4%, log rank P = 0.009) in NCI-HR patients (n = 97). JAK2 mutations and P2RY8-CRLF2 fusion were rarely detected. IKZF1 deletion was identified as adverse prognostic factor even in pediatric BCP-ALL in NCI-HR showing good response to PSL.
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Affiliation(s)
- Daisuke Asai
- Department of Pediatrics, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
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Hyperdiploidy with 58-66 chromosomes in childhood B-acute lymphoblastic leukemia is highly curable: 58951 CLG-EORTC results. Blood 2013; 121:2415-23. [PMID: 23321258 DOI: 10.1182/blood-2012-06-437681] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The aim of our study was to analyze the factors contributing to heterogeneity of prognosis in patients with hyperdiploidy>50 chromosomes (HD>50), a group of B-cell precursor acute lymphoblastic leukemia with favorable outcome. The 541 HD>50 patients registered prospectively in the 58951 European Organisation for Research and Treatment of Cancer (EORTC) Children's Leukemia Group (CLG) trial, identified by karyotype (446 patients) and by DNA index (DI) (490 patients), had a 6-year event-free survival (EFS) of 89.0% (standard error [SE] = 1.5%) and a 6-year overall survival (OS) of 95.9% (SE = 0.9%). The strongest prognostic factor was the modal number of chromosomes (MNC): the 6-year EFS of 51-53, 54-57, and 58-66 MNC groups were 80%, 89%, and 99%, respectively (P < .0001). Ploidy assessed by DI was also a favorable factor: the higher the DI, the better the outcome. The 6-year EFS of the 3 subgroups of DI < 1.16/≥1.16-<1.24/≥1.24 were 83%, 90%, and 95%, respectively (P = .009). All usual combinations of trisomies (chromosomes 4, 10, 17, 18) were significant favorable factors but had lower EFS when MNC was lower than 58. In multivariate analysis, MNC remained the strongest factor. Consequently, the best indicator for excellent outcome was ploidy assessed by karyotype because patients with 58-66 chromosomes stood every chance of being cured (OS of 100% at 6-year follow-up) with less-intensive therapy. This trial was registered at www.clinicaltrials.gov as #NCT00003728. Registered: http://www.eortc.org/, http://clinicaltrials.gov/show/NCT00003728.
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