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Teachey DT, Hunger SP, Loh ML. Optimizing therapy in the modern age: differences in length of maintenance therapy in acute lymphoblastic leukemia. Blood 2021; 137:168-177. [PMID: 32877503 PMCID: PMC7820874 DOI: 10.1182/blood.2020007702] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 08/25/2020] [Indexed: 12/24/2022] Open
Abstract
A majority of children and young adults with acute lymphoblastic leukemia (ALL) are cured with contemporary multiagent chemotherapy regimens. The high rate of survival is largely the result of 70 years of randomized clinical trials performed by international cooperative groups. Contemporary ALL therapy usually consists of cycles of multiagent chemotherapy administered over 2 to 3 years that includes central nervous system (CNS) prophylaxis, primarily consisting of CNS-penetrating systemic agents and intrathecal therapy. Although the treatment backbones vary among cooperative groups, the same agents are used, and the outcomes are comparable. ALL therapy typically begins with 5 to 9 months of more-intensive chemotherapy followed by a prolonged low-intensity maintenance phase. Historically, a few cooperative groups treated boys with 1 more year of maintenance therapy than girls; however, most groups treated boys and girls with equal therapy lengths. This practice arose because of inferior survival in boys with older less-intensive regimens. The extra year of therapy added significant burden to patients and families and involved short- and long-term risks that were potentially life threatening and debilitating. The Children's Oncology Group recently changed its approach as part of its current generation of trials in B-cell ALL and now treats boys and girls with the same duration of therapy. We discuss the rationale behind this change, review the data and differences in practice across cooperative groups, and provide our perspective regarding the length of maintenance therapy.
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Affiliation(s)
- David T Teachey
- Division of Oncology, Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA; and
| | - Stephen P Hunger
- Division of Oncology, Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA; and
| | - Mignon L Loh
- Department of Pediatrics, Benioff Children's Hospital, Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA
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2
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Elhasid R, Nirel R, Avigad S, Avrahami G, Abramov A, Attias D, Arad N, Ballin A, Ben-Arush M, Bielorai B, Burstein Y, Elitzur S, Gabriel H, Hameiri-Grossman M, Kapelushnik J, Sthoeger D, Toren A, Wientraub M, Yaniv I, Izraeli S, Stark B. Poorer outcome of childhood acute lymphoblastic leukemia in the Bedouin population: A report from the Berlin-Frankfurt-Muenster-based Israeli national protocols. Pediatr Blood Cancer 2020; 67:e28024. [PMID: 31595664 DOI: 10.1002/pbc.28024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 08/10/2019] [Accepted: 09/04/2019] [Indexed: 11/12/2022]
Abstract
BACKGROUND Therapy outcomes for childhood acute lymphoblastic leukemia (ALL) had substantially improved in the last decades, but variability across racial and ethnic groups was identified in some clinical studies. In this study, we aimed to investigate whether such a difference in outcome is found in the diverse ethnicities in Israel as well. METHODS A retrospective study was conducted among 1154 patients (855 Jews, 195 Muslims, 52 Bedouins, 26 Druze, and 26 others) aged 1 to 21 years, who were diagnosed with ALL between 1989 and 2011 and were treated according to the same Berlin-Frankfurt-Muenster-based Israel National Study protocols. RESULTS Bedouins had a higher incidence of t(1;19) (16% vs 3% for non-Bedouins) and a lower incidence of high-hyperdiploidy (10% vs 25% for non-Bedouins) (P = 0.01). Five-year event-free survival (EFS) and overall survival (OS) were poorer for the Bedouins (60.3% ± 7.2% and 63.1% ± 7.2%, respectively) compared with the Jews, Muslims, and Druze (80.4% ± 1.4%, 77.3% ± 3.2%, and 84% ± 7.3%, respectively, for EFS [P = 0.02], and 86.3% ± 1.2%, 82.3% ± 2.9%, and 88.3% ± 6.4%, respectively, for OS [P = 0.002]). Adherence to intensive chemotherapy was similar between the Muslims and the Bedouins. CONCLUSIONS Our findings suggest that the Bedouins, a highly inbred ethnic Arab people, may be considered a higher risk group that may need more intensive chemotherapy and/or supportive care in order to improve their outcome.
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Affiliation(s)
- Ronit Elhasid
- Department of Pediatric Hemato-Oncology, Tel Aviv Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ronit Nirel
- Department of Statistics, Hebrew University, Jerusalem, Israel
| | - Smadar Avigad
- Division of Pediatric Hematology/Oncology, Schneider Children's Medical Center of Israel, Petah Tiqwa, and the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Gali Avrahami
- Division of Pediatric Hematology/Oncology, Schneider Children's Medical Center of Israel, Petah Tiqwa, and the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Aya Abramov
- Department of Pediatric Hematology/Oncology, Shaare Zedek Medical Center, Jerusalem, Israel
| | - Dina Attias
- Department of Pediatric Hematology/Oncology, Bnei-Zion Medical Center and Faculty of Medicine, Technion, Haifa, Israel
| | - Nira Arad
- Department of Pediatric Hematology/Oncology, Rambam Medical Center, and The Bruce Rappaport Faculty of Medicine, Technion-Israel, Institute of Technology, Haifa, Israel
| | - Ami Ballin
- Department of Pediatric Hematology/Oncology, Edith Wolfson Medical Center, Holon, Israel
| | - Myriam Ben-Arush
- Department of Pediatric Hematology/Oncology, Rambam Medical Center, and The Bruce Rappaport Faculty of Medicine, Technion-Israel, Institute of Technology, Haifa, Israel
| | - Bella Bielorai
- Department of Pediatric Hematology/Oncology Chaim Sheba Medical Center, Tel Hashomer, and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yoav Burstein
- Department of Pediatric Hemato-Oncology, Tel Aviv Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Sarah Elitzur
- Division of Pediatric Hematology/Oncology, Schneider Children's Medical Center of Israel, Petah Tiqwa, and the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Herzel Gabriel
- Department of Pediatric Hematology/Oncology, Ha-Emek Medical Center, Afula, Israel
| | - Michal Hameiri-Grossman
- Division of Pediatric Hematology/Oncology, Schneider Children's Medical Center of Israel, Petah Tiqwa, and the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Joseph Kapelushnik
- Department of Pediatric Hematology/Oncology, Soroka Medical Center, Beer Sheva, Israel
| | - Dalia Sthoeger
- Department of Pediatric Hematology/Oncology, Kaplan Medical Center, Rehovot, Israel
| | - Amos Toren
- Department of Pediatric Hematology/Oncology Chaim Sheba Medical Center, Tel Hashomer, and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Michael Wientraub
- Department of Pediatric Hematology/Oncology, Hadassah University Hospital, Hebrew University Hadassah Medical School, Jerusalem, Israel
| | - Isaac Yaniv
- Division of Pediatric Hematology/Oncology, Schneider Children's Medical Center of Israel, Petah Tiqwa, and the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shai Izraeli
- Division of Pediatric Hematology/Oncology, Schneider Children's Medical Center of Israel, Petah Tiqwa, and the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Batia Stark
- Division of Pediatric Hematology/Oncology, Schneider Children's Medical Center of Israel, Petah Tiqwa, and the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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3
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Elitzur S, Houri-Shtrecher R, Yackobovitz-Gavan M, Avrahami G, Barzilai S, Gilad G, Lebenthal Y, Phillip M, Stark B, Yaniv I, Shalitin S. Growth and pubertal patterns in young survivors of childhood acute lymphoblastic leukemia. J Pediatr Endocrinol Metab 2017; 30:869-877. [PMID: 28742520 DOI: 10.1515/jpem-2017-0099] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 06/26/2017] [Indexed: 01/01/2023]
Abstract
BACKGROUND Survivors of acute lymphoblastic leukemia (ALL) may experience endocrine dysfunction. This study evaluated growth and pubertal patterns in survivors of childhood ALL. METHODS Longitudinal assessment of anthropometric measurements and pubertal status was performed in a retrospective cohort of survivors (n=183). Median age at last endocrine visit was 16.1 years (range 8.2-27.6); median follow-up time was 8.7 years (range 3-21.4). RESULTS Treatment with chemotherapy+prophylactic cranial radiation (pCRT, n=29) was associated with lower mean height standard deviation score (SDS) than chemotherapy alone (n=154) (p=0.001) and higher prevalence of adult short stature (13% vs. 2.2%). Mean age at pubertal onset was normal (girls: 10.3±1.3 years; boys: 12.0±1.3 years). Precocious puberty, diagnosed in 8.7% of patients, was more prevalent in pCRT-treated girls. Rates of overweight and obesity were 22.9% and 9.3%, respectively. Predictors of endocrine disorders were pCRT (p=0.031) and female gender (p=0.041); of obesity, higher body mass index (BMI)-SDS at diagnosis (p=0.001); and of short stature, lower height-SDS at diagnosis (p=0.038). CONCLUSIONS Most childhood ALL survivors given chemotherapy alone attain normal adult height and puberty. Childhood ALL survivors are at increased risk of overweight, especially those with increased BMI at diagnosis. Clinicians should screen for overweight early in survivorship and introduce early interventions.
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Avigad S, Verly IRN, Lebel A, Kordi O, Shichrur K, Ohali A, Hameiri-Grossman M, Kaspers GJL, Cloos J, Fronkova E, Trka J, Luria D, Kodman Y, Mirsky H, Gaash D, Jeison M, Avrahami G, Elitzur S, Gilad G, Stark B, Yaniv I. miR expression profiling at diagnosis predicts relapse in pediatric precursor B-cell acute lymphoblastic leukemia. Genes Chromosomes Cancer 2015; 55:328-39. [PMID: 26684414 DOI: 10.1002/gcc.22334] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Revised: 10/28/2015] [Accepted: 10/29/2015] [Indexed: 11/11/2022] Open
Abstract
Our aim was to identify miRNAs that can predict risk of relapse in pediatric patients with acute lymphoblastic leukemia (ALL). Following high-throughput miRNA expression analysis (48 samples), five miRs were selected for further confirmation performed by real time quantitative PCR on a cohort of precursor B-cell ALL patients (n = 138). The results were correlated with clinical parameters and outcome. Low expression of miR-151-5p, and miR-451, and high expression of miR-1290 or a combination of all three predicted inferior relapse free survival (P = 0.007, 0.042, 0.025, and <0.0001, respectively). Cox regression analysis identified aberrant expression of the three miRs as an independent prognostic marker with a 10.5-fold increased risk of relapse (P = 0.041) in PCR-MRD non-high risk patients. Furthermore, following exclusion of patients harboring IKZF1 deletion, the aberrant expression of all three miRs could identify patients with a 24.5-fold increased risk to relapse (P < 0.0001). The prognostic relevance of the three miRNAs was evaluated in a non-BFM treated precursor B-cell ALL cohort (n = 33). A significant correlation between an aberrant expression of at least one of the three miRs and poor outcome was maintained (P < 0.0001). Our results identify an expression profile of miR-151-5p, miR-451, and miR-1290 as a novel biomarker for outcome in pediatric precursor B-cell ALL patients, regardless of treatment protocol. The use of these markers may lead to improved risk stratification at diagnosis and allow early therapeutic interventions in an attempt to improve survival of high risk patients.
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Affiliation(s)
- Smadar Avigad
- Molecular Oncology, Felsenstein Medical Research Center, Petah Tikva, Israel.,Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Iedan R N Verly
- Molecular Oncology, Felsenstein Medical Research Center, Petah Tikva, Israel.,Pediatric Oncology/Hematology, VU University Medical Center, Amsterdam, the Netherlands
| | - Asaf Lebel
- Molecular Oncology, Felsenstein Medical Research Center, Petah Tikva, Israel.,Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Oshrit Kordi
- Molecular Oncology, Felsenstein Medical Research Center, Petah Tikva, Israel.,Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Keren Shichrur
- Molecular Oncology, Felsenstein Medical Research Center, Petah Tikva, Israel.,Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Anat Ohali
- Molecular Oncology, Felsenstein Medical Research Center, Petah Tikva, Israel.,Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Michal Hameiri-Grossman
- Molecular Oncology, Felsenstein Medical Research Center, Petah Tikva, Israel.,Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Gertjan J L Kaspers
- Pediatric Oncology/Hematology, VU University Medical Center, Amsterdam, the Netherlands
| | - Jacqueline Cloos
- Pediatric Oncology/Hematology, VU University Medical Center, Amsterdam, the Netherlands
| | - Eva Fronkova
- Department of Paediatric Haematology and Oncology, 2nd Faculty of Medicine, Charles University Prague, Czech Republic
| | - Jan Trka
- Department of Paediatric Haematology and Oncology, 2nd Faculty of Medicine, Charles University Prague, Czech Republic
| | - Drorit Luria
- Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yona Kodman
- Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Hadar Mirsky
- Molecular Oncology, Felsenstein Medical Research Center, Petah Tikva, Israel.,Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Dafna Gaash
- Molecular Oncology, Felsenstein Medical Research Center, Petah Tikva, Israel.,Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Marta Jeison
- Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Galia Avrahami
- Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Sarah Elitzur
- Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Gil Gilad
- Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Batia Stark
- Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Isaac Yaniv
- Molecular Oncology, Felsenstein Medical Research Center, Petah Tikva, Israel.,Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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5
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Kunz JB, Rausch T, Bandapalli OR, Eilers J, Pechanska P, Schuessele S, Assenov Y, Stütz AM, Kirschner-Schwabe R, Hof J, Eckert C, von Stackelberg A, Schrappe M, Stanulla M, Koehler R, Avigad S, Elitzur S, Handgretinger R, Benes V, Weischenfeldt J, Korbel JO, Muckenthaler MU, Kulozik AE. Pediatric T-cell lymphoblastic leukemia evolves into relapse by clonal selection, acquisition of mutations and promoter hypomethylation. Haematologica 2015; 100:1442-50. [PMID: 26294725 DOI: 10.3324/haematol.2015.129692] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 08/11/2015] [Indexed: 11/09/2022] Open
Abstract
Relapsed precursor T-cell acute lymphoblastic leukemia is characterized by resistance against chemotherapy and is frequently fatal. We aimed at understanding the molecular mechanisms resulting in relapse of T-cell acute lymphoblastic leukemia and analyzed 13 patients at first diagnosis, remission and relapse by whole exome sequencing, targeted ultra-deep sequencing, multiplex ligation dependent probe amplification and DNA methylation array. Compared to primary T-cell acute lymphoblastic leukemia, in relapse the number of single nucleotide variants and small insertions and deletions approximately doubled from 11.5 to 26. Targeted ultra-deep sequencing sensitively detected subclones that were selected for in relapse. The mutational pattern defined two types of relapses. While both are characterized by selection of subclones and acquisition of novel mutations, 'type 1' relapse derives from the primary leukemia whereas 'type 2' relapse originates from a common pre-leukemic ancestor. Relapse-specific changes included activation of the nucleotidase NT5C2 resulting in resistance to chemotherapy and mutations of epigenetic modulators, exemplified by SUZ12, WHSC1 and SMARCA4. While mutations present in primary leukemia and in relapse were enriched for known drivers of leukemia, relapse-specific changes revealed an association with general cancer-promoting mechanisms. This study thus identifies mechanisms that drive progression of pediatric T-cell acute lymphoblastic leukemia to relapse and may explain the characteristic treatment resistance of this condition.
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Affiliation(s)
- Joachim B Kunz
- Department of Pediatric Oncology, Hematology and Immunology, Children's Hospital, University of Heidelberg, Germany Molecular Medicine Partnership Unit, EMBL-University of Heidelberg, Germany German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Tobias Rausch
- Molecular Medicine Partnership Unit, EMBL-University of Heidelberg, Germany European Molecular Biology Laboratory (EMBL), Genome Biology Unit, Heidelberg, Germany European Molecular Biology Laboratory (EMBL), Genomics Core Facility, Heidelberg, Germany
| | - Obul R Bandapalli
- Department of Pediatric Oncology, Hematology and Immunology, Children's Hospital, University of Heidelberg, Germany Molecular Medicine Partnership Unit, EMBL-University of Heidelberg, Germany German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Juliane Eilers
- Department of Pediatric Oncology, Hematology and Immunology, Children's Hospital, University of Heidelberg, Germany Molecular Medicine Partnership Unit, EMBL-University of Heidelberg, Germany
| | - Paulina Pechanska
- Department of Pediatric Oncology, Hematology and Immunology, Children's Hospital, University of Heidelberg, Germany Molecular Medicine Partnership Unit, EMBL-University of Heidelberg, Germany
| | - Stephanie Schuessele
- Department of Pediatric Oncology, Hematology and Immunology, Children's Hospital, University of Heidelberg, Germany Molecular Medicine Partnership Unit, EMBL-University of Heidelberg, Germany
| | - Yassen Assenov
- Division of Epigenomics and Cancer Risk Factors, The German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Adrian M Stütz
- Molecular Medicine Partnership Unit, EMBL-University of Heidelberg, Germany European Molecular Biology Laboratory (EMBL), Genome Biology Unit, Heidelberg, Germany
| | | | - Jana Hof
- Department of Pediatric Oncology/Hematology, Charité - Universitätsmedizin Berlin, Germany German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Cornelia Eckert
- Department of Pediatric Oncology/Hematology, Charité - Universitätsmedizin Berlin, Germany
| | - Arend von Stackelberg
- Department of Pediatric Oncology/Hematology, Charité - Universitätsmedizin Berlin, Germany
| | - Martin Schrappe
- Pediatrics, University Hospital Schleswig-Holstein, Campus Kiel, Germany
| | - Martin Stanulla
- Department of Pediatric Hematology/Oncology, Medical School Hannover, Germany
| | - Rolf Koehler
- Department of Human Genetics, University of Heidelberg, Germany
| | - Smadar Avigad
- Molecular Oncology, Felsenstein Medical Research Center and Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel
| | - Sarah Elitzur
- Molecular Oncology, Felsenstein Medical Research Center and Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel
| | | | - Vladimir Benes
- European Molecular Biology Laboratory (EMBL), Genomics Core Facility, Heidelberg, Germany
| | - Joachim Weischenfeldt
- European Molecular Biology Laboratory (EMBL), Genome Biology Unit, Heidelberg, Germany
| | - Jan O Korbel
- Molecular Medicine Partnership Unit, EMBL-University of Heidelberg, Germany European Molecular Biology Laboratory (EMBL), Genome Biology Unit, Heidelberg, Germany
| | - Martina U Muckenthaler
- Department of Pediatric Oncology, Hematology and Immunology, Children's Hospital, University of Heidelberg, Germany Molecular Medicine Partnership Unit, EMBL-University of Heidelberg, Germany
| | - Andreas E Kulozik
- Department of Pediatric Oncology, Hematology and Immunology, Children's Hospital, University of Heidelberg, Germany Molecular Medicine Partnership Unit, EMBL-University of Heidelberg, Germany German Cancer Consortium (DKTK), Heidelberg, Germany
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Pang L, Liang Y, Pan J, Wang JR, Chai YH, Zhao WL. Clinical features and prognostic significance of TCF3-PBX1 fusion gene in Chinese children with acute lymphoblastic leukemia by using a modified ALL-BFM-95 protocol. Pediatr Hematol Oncol 2015; 32:173-81. [PMID: 25551271 DOI: 10.3109/08880018.2014.983625] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
For children with precursor B (pre-B) acute lymphoblastic leukemia (ALL) with TCF3-PBX1 fusion gene, their prognosis has been a controversial topic. From January 2008 to December 2012 in our hospital, 450 patients were diagnosed as ALL. Clinical characteristics of 20 patients with TCF3-PBX1 fusion gene were analyzed retrospectively, which were classified to the intermediate-risk (IR) group according to Chinese Children Leukemia Group-2008 (CCLG-2008) risk-stratification criteria and protocol based on the backbone of BFM 95 trails. Eighty five cases without TCF3-PBX1 in the same IR group were regarded as the comparison group. There were no differences in age, gender, initial white blood cell (WBC) count, status of central nerves system (CNS) at diagnosis and complete remission (CR) rates of bone marrow (BM) between the two groups (P > .05). The 5-year probability of event-free survival (EFS) rates were 84.4 ± 15.6% and 73.5 ± 15.6% in the TCF3-PBX1 group and the comparison group (P = .35), respectively. The 5-year probability of overall survival (OS) rates were 86.0 ± 17.6% and 81.8 ± 17.6% (P = .46), respectively. Relapse rates were 10.5% and 12.9% (P = 1.00), respectively. There were not cases with CNS relapse in the TCF3-PBX1 group. When intensive chemotherapy was used, the TCF3-PBX1 was associated with a favorable outcome in childhood pre-B ALL.
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Affiliation(s)
- Li Pang
- 1Department of Hematology and Oncology of Affiliated Children's Hospital, Soochow University , Suzhou, Jiangsu , China
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7
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Dose intensification of methotrexate and cytarabine during intensified continuation chemotherapy for high-risk B-precursor acute lymphoblastic leukemia: POG 9406: a report from the Children's Oncology Group. J Pediatr Hematol Oncol 2014; 36:353-61. [PMID: 24608079 PMCID: PMC4120865 DOI: 10.1097/mph.0000000000000131] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE To determine the efficacy and toxicity of higher dose versus standard dose intravenous methotrexate (MTX) and pulses of high-dose cytosine arabinoside with asparaginase versus standard dose cytosine arabinoside and teniposide during intensified continuation therapy for higher risk pediatric B-precursor acute lymphoblastic leukemia (ALL). PATIENTS AND METHODS From 1994 to 1999, the Pediatric Oncology Group conducted a randomized phase III clinical trial in higher risk pediatric B-precursor ALL. A total of 784 patients were randomized in a 2×2 factorial design to receive MTX 1 g/m versus 2.5 g/m and to cytosine arabinoside/teniposide versus high-dose cytosine arabinoside/asparaginase during intensified continuation therapy. RESULTS Patients receiving standard dose MTX had a 5-year disease-free survival (DFS) of 71.8±2.4%; patients receiving higher dose MTX had a 5-year DFS of 71.7±2.4% (P=0.55). Outcomes on cytosine arabinoside/teniposide (DFS of 70.4±2.4) were similar to higher dose cytosine arabinoside/asparaginase (DFS of 73.1±2.3%) (P=0.41). Overall survival rates were not different between MTX doses or cytosine arabinoside/teniposide versus cytosine arabinoside/asparaginase. CONCLUSIONS Increasing MTX dosing to 2.5 g/m did not improve outcomes in higher risk pediatric B-precursor ALL. Giving high-dose cytarabine and asparaginase pulses instead of standard dose cytarabine and teniposide produced nonsignificant differences in outcomes, allowing for teniposide to be removed from ALL therapy.
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8
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Güneş AM, Ören H, Baytan B, Bengoa ŞY, Evim MS, Gözmen S, Tüfekçi Ö, Karapınar TH, İrken G. The long-term results of childhood acute lymphoblastic leukemia at two centers from Turkey: 15 years of experience with the ALL-BFM 95 protocol. Ann Hematol 2014; 93:1677-84. [DOI: 10.1007/s00277-014-2106-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 05/07/2014] [Indexed: 10/25/2022]
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9
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Kotecha RS, Gottardo NG, Kees UR, Cole CH. The evolution of clinical trials for infant acute lymphoblastic leukemia. Blood Cancer J 2014; 4:e200. [PMID: 24727996 PMCID: PMC4003413 DOI: 10.1038/bcj.2014.17] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 02/20/2014] [Indexed: 02/07/2023] Open
Abstract
Acute lymphoblastic leukemia (ALL) in infants has a significantly inferior outcome in comparison with older children. Despite initial improvements in survival of infants with ALL since establishment of the first pediatric cooperative group ALL trials, the poor outcome has plateaued in recent years. Historically, infants were treated on risk-adapted childhood ALL protocols. These studies were pivotal in identifying the need for infant-specific protocols, delineating prognostic categories and the requirement for a more unified approach between study groups to overcome limitations in accrual because of low incidence. This subsequently led to the development of collaborative infant-specific studies. Landmark outcomes have included the elimination of cranial radiotherapy following the discovery of intrathecal and high-dose systemic therapy as a superior and effective treatment strategy for central nervous system disease prophylaxis, with improved neurodevelopmental outcome. Universal prospective identification of independent adverse prognostic factors, including presence of a mixed lineage leukemia rearrangement and young age, has established the basis for risk stratification within current trials. The infant-specific trials have defined limits to which conventional chemotherapeutic agents can be intensified to optimize the balance between treatment efficacy and toxicity. Despite variations in therapeutic intensity, there has been no recent improvement in survival due to the equilibrium between relapse and toxicity. Ultimately, to improve the outcome for infants with ALL, key areas still to be addressed include identification and adaptation of novel prognostic markers and innovative therapies, establishing the role of hematopoietic stem cell transplantation in first complete remission, treatment strategies for relapsed/refractory disease and monitoring and timely intervention of late effects in survivors. This would be best achieved through a single unified international trial.
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Affiliation(s)
- R S Kotecha
- 1] Department of Haematology and Oncology, Princess Margaret Hospital for Children, Perth, Western Australia, Australia [2] Telethon Institute for Child Health Research, University of Western Australia, Perth, Western Australia, Australia [3] School of Paediatrics and Child Health, University of Western Australia, Perth, Western Australia, Australia
| | - N G Gottardo
- 1] Department of Haematology and Oncology, Princess Margaret Hospital for Children, Perth, Western Australia, Australia [2] Telethon Institute for Child Health Research, University of Western Australia, Perth, Western Australia, Australia [3] School of Paediatrics and Child Health, University of Western Australia, Perth, Western Australia, Australia
| | - U R Kees
- Telethon Institute for Child Health Research, University of Western Australia, Perth, Western Australia, Australia
| | - C H Cole
- 1] Department of Haematology and Oncology, Princess Margaret Hospital for Children, Perth, Western Australia, Australia [2] Telethon Institute for Child Health Research, University of Western Australia, Perth, Western Australia, Australia [3] School of Paediatrics and Child Health, University of Western Australia, Perth, Western Australia, Australia
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Stary J, Zimmermann M, Campbell M, Castillo L, Dibar E, Donska S, Gonzalez A, Izraeli S, Janic D, Jazbec J, Konja J, Kaiserova E, Kowalczyk J, Kovacs G, Li CK, Magyarosy E, Popa A, Stark B, Jabali Y, Trka J, Hrusak O, Riehm H, Masera G, Schrappe M. Intensive chemotherapy for childhood acute lymphoblastic leukemia: results of the randomized intercontinental trial ALL IC-BFM 2002. J Clin Oncol 2013; 32:174-84. [PMID: 24344215 DOI: 10.1200/jco.2013.48.6522] [Citation(s) in RCA: 204] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
PURPOSE From 2002 to 2007, the International Berlin-Frankfurt-Münster Study Group conducted a prospective randomized clinical trial (ALL IC-BFM 2002) for the management of childhood acute lymphoblastic leukemia (ALL) in 15 countries on three continents. The aim of this trial was to explore the impact of differential delayed intensification (DI) on outcome in all risk groups. PATIENTS AND METHODS For this trial, 5,060 eligible patients were divided into three risk groups according to age, WBC, early treatment response, and unfavorable genetic aberrations. DI was randomized as follows: standard risk (SR), two 4-week intensive elements (protocol III) versus one 7-week protocol II; intermediate risk (IR), protocol III × 3 versus protocol II × 1; high risk (HR), protocol III × 3 versus either protocol II × 2 (Associazione Italiana Ematologia Oncologia Pediatrica [AIEOP] option), or 3 HR blocks plus single protocol II (Berlin-Frankfurt-Münster [BFM] option). RESULTS At 5 years, the probabilities of event-free survival and survival were 74% (± 1%) and 82% (± 1%) for all 5,060 eligible patients, 81% and 90% for the SR (n = 1,564), 75% and 83% for the IR (n = 2,650), and 55% and 62% for the HR (n = 846) groups, respectively. No improvement was accomplished by more intense and/or prolonged DI. CONCLUSION The ALL IC-BFM 2002 trial is a good example of international collaboration in pediatric oncology. A wide platform of countries able to run randomized studies in ALL has been established. Although the alternative DI did not improve outcome compared with standard treatment and the overall results are worse than those achieved by longer established leukemia groups, the national results have generally improved.
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Affiliation(s)
- Jan Stary
- Jan Stary, Jan Trka, and Ondrej Hrusak, Charles University and University Hospital Motol, Prague; Yahia Jabali, Regional Hospital, Ceske Budejovice, Czech Republic; Martin Zimmermann and Hansjörg Riehm, Medical School Hannover, Hannover; Martin Schrappe, University Hospital Schleswig-Holstein, Kiel, Germany; Myriam Campbell, Roberto del Rio Hospital, Universidad de Chile, Santiago, Chile; Luis Castillo, Hospital Pereira Rossell, Montevideo, Uruguay; Eduardo Dibar, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina; Svetlana Donska, Regional Oncologic Hospital, Kiev, Ukraine; Alejandro Gonzalez, Institute of Hematology and Immunology, La Habana, Cuba; Shai Izraeli, Sheba Medical Center of Israel, Sackler School of Medicine, Tel Aviv University, Tel Hashomer; Batia Stark, Schneider Children's Medical Center of Israel, Sackler School of Medicine, Tel Aviv University, Petah-Tikva, Israel; Dragana Janic, University Children's Hospital, University of Belgrade, Belgrade, Serbia; Janez Jazbec, University Children's Hospital, Ljubljana, Slovenia; Josip Konja, University Hospital Centre Rebro, Zagreb, Croatia; Emilia Kaiserova, University Children's Hospital, Bratislava, Slovakia; Jerzy Kowalczyk, University of Lublin, Lublin, Poland; Gabor Kovacs and Edina Magyarosy, Semmelweis University, Budapest, Hungary; Chi-Kong Li, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong, Special Administrative Region, People's Republic of China; Alexander Popa, N.N. Blokhin Russian Cancer Research Center, Moscow, Russia; and Giuseppe Masera, Ospedale S. Gerardo, University of Milano-Bicocca, Monza, Italy
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Acute lymphoblastic leukemia in children with Down syndrome: a retrospective analysis from the Ponte di Legno study group. Blood 2013; 123:70-7. [PMID: 24222333 DOI: 10.1182/blood-2013-06-509463] [Citation(s) in RCA: 152] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Children with Down syndrome (DS) have an increased risk of B-cell precursor (BCP) acute lymphoblastic leukemia (ALL). The prognostic factors and outcome of DS-ALL patients treated in contemporary protocols are uncertain. We studied 653 DS-ALL patients enrolled in 16 international trials from 1995 to 2004. Non-DS BCP-ALL patients from the Dutch Child Oncology Group and Berlin-Frankfurt-Münster were reference cohorts. DS-ALL patients had a higher 8-year cumulative incidence of relapse (26% ± 2% vs 15% ± 1%, P < .001) and 2-year treatment-related mortality (TRM) (7% ± 1% vs 2.0% ± <1%, P < .0001) than non-DS patients, resulting in lower 8-year event-free survival (EFS) (64% ± 2% vs 81% ± 2%, P < .0001) and overall survival (74% ± 2% vs 89% ± 1%, P < .0001). Independent favorable prognostic factors include age <6 years (hazard ratio [HR] = 0.58, P = .002), white blood cell (WBC) count <10 × 10(9)/L (HR = 0.60, P = .005), and ETV6-RUNX1 (HR = 0.14, P = .006) for EFS and age (HR = 0.48, P < .001), ETV6-RUNX1 (HR = 0.1, P = .016) and high hyperdiploidy (HeH) (HR = 0.29, P = .04) for relapse-free survival. TRM was the major cause of death in ETV6-RUNX1 and HeH DS-ALLs. Thus, while relapse is the main contributor to poorer survival in DS-ALL, infection-associated TRM was increased in all protocol elements, unrelated to treatment phase or regimen. Future strategies to improve outcome in DS-ALL should include improved supportive care throughout therapy and reduction of therapy in newly identified good-prognosis subgroups.
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Schmiegelow K, Levinsen MF, Attarbaschi A, Baruchel A, Devidas M, Escherich G, Gibson B, Heydrich C, Horibe K, Ishida Y, Liang DC, Locatelli F, Michel G, Pieters R, Piette C, Pui CH, Raimondi S, Silverman L, Stanulla M, Stark B, Winick N, Valsecchi MG. Second malignant neoplasms after treatment of childhood acute lymphoblastic leukemia. J Clin Oncol 2013; 31:2469-76. [PMID: 23690411 DOI: 10.1200/jco.2012.47.0500] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
PURPOSE Second malignant neoplasms (SMNs) after diagnosis of childhood acute lymphoblastic leukemia (ALL) are rare events. PATIENTS AND METHODS We analyzed data on risk factors and outcomes of 642 children with SMNs occurring after treatment for ALL from 18 collaborative study groups between 1980 and 2007. RESULTS Acute myeloid leukemia (AML; n = 186), myelodysplastic syndrome (MDS; n = 69), and nonmeningioma brain tumor (n = 116) were the most common types of SMNs and had the poorest outcome (5-year survival rate, 18.1% ± 2.9%, 31.1% ± 6.2%, and 18.3% ± 3.8%, respectively). Five-year survival estimates for AML were 11.2% ± 2.9% for 125 patients diagnosed before 2000 and 34.1% ± 6.3% for 61 patients diagnosed after 2000 (P < .001); 5-year survival estimates for MDS were 17.1% ± 6.4% (n = 36) and 48.2% ± 10.6% (n = 33; P = .005). Allogeneic stem-cell transplantation failed to improve outcome of secondary myeloid malignancies after adjusting for waiting time to transplantation. Five-year survival rates were above 90% for patients with meningioma, Hodgkin lymphoma, thyroid carcinoma, basal cell carcinoma, and parotid gland tumor, and 68.5% ± 6.4% for those with non-Hodgkin lymphoma. Eighty-nine percent of patients with brain tumors had received cranial irradiation. Solid tumors were associated with cyclophosphamide exposure, and myeloid malignancy was associated with topoisomerase II inhibitors and starting doses of methotrexate of at least 25 mg/m(2) per week and mercaptopurine of at least 75 mg/m(2) per day. Myeloid malignancies with monosomy 7/5q- were associated with high hyperdiploid ALL karyotypes, whereas 11q23/MLL-rearranged AML or MDS was associated with ALL harboring translocations of t(9;22), t(4;11), t(1;19), and t(12;21) (P = .03). CONCLUSION SMNs, except for brain tumors, AML, and MDS, have outcomes similar to their primary counterparts.
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Affiliation(s)
- Kjeld Schmiegelow
- Department of Paediatric and Adolescent Medicine, University Hospital Rigshospitalet, Copenhagen, Denmark.
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Richards S, Pui CH, Gayon P. Systematic review and meta-analysis of randomized trials of central nervous system directed therapy for childhood acute lymphoblastic leukemia. Pediatr Blood Cancer 2013; 60:185-95. [PMID: 22693038 PMCID: PMC3461084 DOI: 10.1002/pbc.24228] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Accepted: 05/16/2012] [Indexed: 11/07/2022]
Abstract
Treatment of the central nervous system (CNS) is an essential therapy component for childhood acute lymphoblastic leukemia (ALL). Individual patient data from 47 trials addressing 16 CNS treatment comparisons were analyzed. Event-free survival (EFS) was similar for radiotherapy versus intrathecal (IT), and radiotherapy plus IT versus IV methotrexate (IV MTX) plus IT. Triple intrathecal therapy (TIT) gave similar EFS but poorer survival than intrathecal methotrexate (IT MTX), but additional IV MTX improved both outcomes. One trial resulted in similar EFS and survival with IV MTX plus IT MTX versus TIT alone. Radiotherapy can generally be replaced by IT therapy. TIT should be used with effective systemic therapy such as IV MTX.
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Hunger SP, Baruchel A, Biondi A, Evans WE, Jeha S, Loh M, Moericke A, Pieters R, Relling MV, Schmiegelow K, Schrappe M, Silverman LB, Stanulla M, Valsecchi MG, Vora A, Pui CH. The thirteenth international childhood acute lymphoblastic leukemia workshop report: La Jolla, CA, USA, December 7-9, 2011. Pediatr Blood Cancer 2013; 60:344-8. [PMID: 23024117 DOI: 10.1002/pbc.24354] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Accepted: 09/06/2012] [Indexed: 12/29/2022]
Affiliation(s)
- Stephen P Hunger
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO 80045, USA.
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Muwakkit S, Al-Aridi C, Samra A, Saab R, Mahfouz RA, Farra C, Jeha S, Abboud MR. Implementation of an intensive risk-stratified treatment protocol for children and adolescents with acute lymphoblastic leukemia in Lebanon. Am J Hematol 2012; 87:678-83. [PMID: 22565284 DOI: 10.1002/ajh.23222] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 03/12/2012] [Accepted: 03/17/2012] [Indexed: 11/10/2022]
Abstract
With modern risk-adapted therapy, over 80% of children with acute lymphoblastic leukemia (ALL) in high-income countries (HICs) are cured. In countries with limited resources, however, therapy results for pediatric ALL are still not encouraging. We describe our experience in treating children with ALL using a risk-adapted protocol at a tertiary referral center in Lebanon. From May 2002 to August 2009, 111 consecutive patients 1-21 years of age with newly diagnosed ALL received the CCCL ALL protocol which was based on the St. Jude Children's Research Hospital Total XV Study. The median age at diagnosis was 5 years 5 months. The male to female ratio was 1.5. Forty-six patients received the intermediate-/high-risk arm and 65 received the low-risk arm. Only one patient (0.9%) died during induction therapy. Relapse occurred in 8 (7.2%) patients. Eight (7.2%) patients died, 4 of whom were in remission. The median follow-up of the patients was 38 months. The 5-year overall survival and event-free survival were and 88.5% (95% CI: 77.1-94.4) and 78.7% (95% CI: 69.8-88.4), respectively. Our results are comparable to those in HICs in spite of the limited resources and the relatively low socioeconomic status of the Lebanese population. Children treated on this protocol experienced significant toxicity necessitating expert supportive care, but benefited from improved cure rates and prolonged survival.
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Affiliation(s)
- Samar Muwakkit
- Department of Pediatrics and Adolescent Medicine, Children's Cancer Center of Lebanon, American University of Beirut Medical Center, Beirut, Lebanon.
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Yang YL, Hsiao CC, Chen HY, Lin KH, Jou ST, Chen JS, Chang TK, Sheen JM, Yu SL, Lu MY, Cheng CN, Wu KH, Wang SC, Wang JD, Chang HH, Lin SR, Lin SW, Lin DT. Absence of biallelic TCRγ deletion predicts induction failure and poorer outcomes in childhood T-cell acute lymphoblastic leukemia. Pediatr Blood Cancer 2012; 58:846-51. [PMID: 22180181 DOI: 10.1002/pbc.24021] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Accepted: 11/03/2011] [Indexed: 11/11/2022]
Abstract
BACKGROUND The absence of biallelic TCRγ deletion (ABD) is a characteristic of early thymocyte precursors before V(D)J recombination. The ABD was reported to predict early treatment failure in T-cell acute lymphoblastic leukemia (ALL). This study aimed to investigate its prognostic value in Taiwanese patients with T-cell ALL. PROCEDURE Forty-five children with T-cell ALL were enrolled from six medical centers in Taiwan. Quantitative DNA polymerase chain reaction (Q-PCR) was performed to check the status of TCRγ deletion. The threshold for homozygous deletions by Q-PCR was defined as a fold-change <0.35. RESULTS ABD was found in 20 patients [20:45] who had higher incidences of induction failure than those without ABD (P = 0.03; hazard ratio [HR] = 8.13; 95% confidence interval [95% CI] = 1.23-53.77) after multivariate regression analysis. Patents with ABD also had inferior EFS and OS (P = 0.071 and 0.0196, respectively). Multivariate Cox analysis indicated that the association between ABD and overall survival was independent of age and leukocyte count on presentation (P = 0.036; HR = 4.25; 95% CI = 1.10-16.42). CONCLUSIONS The absence of TCRγ deletion is a predictor of a poor response to induction chemotherapy for pediatric patients with T-cell ALL in Taiwan. Providing patients with T-cell ALL and ABD with alternative regimens may be worthwhile to test in future clinical trials.
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Affiliation(s)
- Yung-Li Yang
- Department of Laboratory Medicine, National Taiwan University Hospital, Taipei, Taiwan
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Clinical and laboratory biology of childhood acute lymphoblastic leukemia. J Pediatr 2012; 160:10-8. [PMID: 21920540 DOI: 10.1016/j.jpeds.2011.08.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2011] [Revised: 06/28/2011] [Accepted: 08/02/2011] [Indexed: 02/02/2023]
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Pui CH, Carroll WL, Meshinchi S, Arceci RJ. Biology, risk stratification, and therapy of pediatric acute leukemias: an update. J Clin Oncol 2011; 29:551-65. [PMID: 21220611 DOI: 10.1200/jco.2010.30.7405] [Citation(s) in RCA: 601] [Impact Index Per Article: 46.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
PURPOSE We review recent advances in the biologic understanding and treatment of childhood acute lymphoblastic leukemia (ALL) and acute myeloid leukemia (AML), identify therapeutically challenging subgroups, and suggest future directions of research. METHODS A review of English literature on childhood acute leukemias from the past 5 years was performed. RESULTS Contemporary treatments have resulted in 5-year event-free survival rates of approximately 80% for childhood ALL and almost 60% for pediatric AML. The advent of high-resolution genome-wide analyses has provided new insights into leukemogenesis and identified many novel subtypes of leukemia. Virtually all ALL and the vast majority of AML cases can be classified according to specific genetic abnormalities. Cooperative mutations involved in cell differentiation, cell cycle regulation, tumor suppression, drug responsiveness, and apoptosis have also been identified in many cases. The development of new formulations of existing drugs, molecularly targeted therapy, and immunotherapies promises to further advance the cure rates and improve quality of life of patients. CONCLUSION The application of new high-throughput sequencing techniques to define the complete DNA sequence of leukemia and host normal cells and the development of new agents targeted to leukemogenic pathways promise to further improve outcome in the coming decade.
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Affiliation(s)
- Ching-Hon Pui
- St Jude Children's Research Hospital, 262 Danny Thomas Pl, Memphis, TN 38105, USA.
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Recent research advances in childhood acute lymphoblastic leukemia. J Formos Med Assoc 2011; 109:777-87. [PMID: 21126650 DOI: 10.1016/s0929-6646(10)60123-4] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2010] [Revised: 08/01/2010] [Accepted: 08/02/2010] [Indexed: 01/26/2023] Open
Abstract
Recent progress in risk-adapted treatment for childhood acute lymphoblastic leukemia has secured 5-year event-free survival rates of approximately 80% and 5-year survival rates approaching 90%. With improved systemic and intrathecal chemotherapy, it is now feasible to omit safely in all patients prophylactic cranial irradiation, which was once a standard treatment. As high-resolution, genome-wide analyses of leukemic and normal host cells continue to identify novel subtypes of lymphoblastic leukemia and provide new insights into leukemogenesis, we can look forward to the time when all cases of this disease will be classified according to specific genetic abnormalities, some of which will yield "druggable" targets for more effective and less toxic treatments. Meanwhile, it is sobering to consider that a significant fraction of leukemia survivors will develop serious health problems within 30 years of their initial diagnosis. This underlines the need to introduce early countermeasures to reduce late therapy-related effects. The ultimate challenge is to gain a clear understanding of the factors that give rise to childhood leukemia in the first place, and enable preventive strategies to be devised and implemented.
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Multiplex reverse transcription-polymerase chain reaction as diagnostic molecular screening of 4 common fusion chimeric genes in Taiwanese children with acute lymphoblastic leukemia. J Pediatr Hematol Oncol 2010; 32:e323-30. [PMID: 20930648 DOI: 10.1097/mph.0b013e3181ed1655] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND The classification of B-lineage acute lymphoblastic leukemia (ALL) by specific chromosomal translocations has prognostic implications for risk-directed therapy. Reverse transcription-polymerase chain reaction (RT-PCR) assay is a useful tool for detecting fusion transcripts from common chromosomal translocations of ALL cells. METHODS Multiplex RT-PCR and nested-PCR assays were used to detect ALL-type BCR-ABL1 transcripts of the t(9;22), TCF-PBX1 transcripts of t(1;19), the MLL-AF4 transcripts of t(4;11), and 2 variants of ETV6-RUNX1 of the cryptic t(12;21) in 148 leukemic samples upon diagnosis. The patients received risk-directed protocols of the Taiwan Pediatric Oncology Group-ALL-2002 that consisted of multiple chemotherapeutic agents of different intensities. Event-free survival (EFS) and overall survival (OS) rates were analyzed for genetic abnormalities detected by multiplex PCR and conventional cytogenetic analysis by the Kaplan-Meier method, and compared with the Mantel-Haenszel test. The Cox proportional hazards model was implemented to identify independent prognostic factors for EFS and OS. RESULTS In this cohort of Taiwanese children, the relative frequencies of the 4 translocations of B-lineage ALL were 8% with ALL-type t(9;22)/BCR-ABL1, 4% with (1;19)/TCF-PBX1, 2% with t(4;11)/MLL-AF4, and 17.6% with t(12;21)/ETV6-RUNX1. Patients with t(12;21)/ETV6-RUNX1 fusion, hyperdiploidy, and t(1;19)/TCF-PBX1 fusion had the most favorable outcomes, whereas those with the t(9;22)/BCR-ABL1 fusion or t(4;11) and other MLL gene rearrangement had poor prognosis (P<0.001 for EFS and OS). BCR-ABL1, MLL gene rearrangement, and very high-risk group were independent prognostic factors after Cox regression analysis. CONCLUSIONS The biological factors of leukemia cells are associated with treatment outcomes in childhood ALL. Multiplex RT-PCR assay is an efficient and sensitive diagnostic tool that may improve the ability to accurately and rapidly risk-stratify children with ALL.
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Childhood acute lymphoblastic leukemia in Turkey: factors influencing treatment and outcome: a single center experience. J Pediatr Hematol Oncol 2010; 32:e317-22. [PMID: 20930649 DOI: 10.1097/mph.0b013e3181ed163c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
There is limited data about the long-term treatment outcome and prognosis of childhood acute lymphoblastic leukemia (ALL) in developing countries. Our study was designed to assess survival data and identify risk factors. Data of 142 children with ALL who were treated with a modified BFM 95 protocol between 1997 and 2007 were evaluated. The median age was 4.3 years. Complete remission (CR) rate after induction phase was 93.5%; with 2.1% induction-related mortality and 0.7% having resistance disease. Of complete responders, 67.1% are in continuous CR with a median follow-up of 63 months (range: 24 to 153 mo). Treatment-related mortality was 17.7% and the total rate of treatment abandonment was 3.5%. The probability of event-free survival was 67.3% (95% confidence interval 59.3-75.3) at 4 years and 63.2% (95% confidence interval 54.4-72.0) at 8 years. This report examines children with ALL treated with a modified ALL-BFM 95 protocol in a tertiary care center in Turkey with adequate follow up and demonstrates the need for improvements especially for patients with unfavorable risk group and strategies to reduce deaths from infection in CR to keep pace with cure rates in developed countries.
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