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Youlden DR, Baade PD, Gottardo NG, Moore AS, Valery PC, Pole JD. Population-level 5-year event-free survival for children with cancer in Australia. Pediatr Blood Cancer 2024; 71:e31195. [PMID: 39080490 DOI: 10.1002/pbc.31195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 06/12/2024] [Accepted: 06/29/2024] [Indexed: 08/24/2024]
Abstract
BACKGROUND Event-free survival (EFS) considers other adverse events in addition to mortality. It therefore provides a more complete understanding of the effectiveness and consequences of treatment than standard survival measures, but is rarely reported at the population level for childhood cancer. PROCEDURE Our study cohort (n = 7067) was obtained from the Australian Childhood Cancer Registry, including children aged under 15 diagnosed with cancer between 2006 and 2015, with follow-up potentially available to 31 December 2020. The events of interest were relapse following remission, progressive disease, diagnosis of a second primary cancer or death from any cause. Five-year EFS and all-cause observed survival were both calculated, stratified by type of childhood cancer, remoteness of residence and stage at diagnosis. Differences in EFS were assessed using multivariable flexible parametric models. RESULTS Approximately one quarter of patients (n = 1605 of 7067, 23%) experienced at least one of the events of interest within 5 years of diagnosis. Relapse was twice as common for children with metastatic/advanced disease (22%) versus children with localised/limited cancers (11%). Overall 5-year EFS was 75.0% (95% confidence interval [CI]: 73.9%-76.0%), compared to 85.8% observed survival (95% CI: 85.0%-86.6%). Patients with other gliomas had the lowest EFS (35.4%, 95% CI: 27.8%-43.1%). EFS was significantly lower among children with acute myeloid leukaemia in outer regional/remote areas compared to major cities (adjusted hazard ratio [HR] = 1.90, 95% CI: 1.20-3.00). CONCLUSIONS Reporting EFS at a population level provides further insight on a wider range of impacts apart from mortality alone, contributing towards efforts to improve the management and outcomes of childhood cancer.
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Affiliation(s)
- Danny R Youlden
- Cancer Council Queensland, Brisbane, Queensland, Australia
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, Australia
| | - Peter D Baade
- Cancer Council Queensland, Brisbane, Queensland, Australia
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, Australia
- School of Mathematical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Nicolas G Gottardo
- Department of Paediatric and Adolescent Oncology/Haematology, Perth Children's Hospital, Perth, Western Australia, Australia
- Brain Tumour Research Program, Telethon Kids Cancer Centre, Telethon Kids Institute, University of Western Australia, Perth, Western Australia, Australia
| | - Andrew S Moore
- Oncology Service, Queensland Children's Hospital, Children's Health Queensland Hospital and Health Service, Brisbane, Queensland, Australia
- Child Health Research Centre, The University of Queensland, Brisbane, Queensland, Australia
| | - Patricia C Valery
- Population Health Department, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Jason D Pole
- Centre for Health Services Research, The University of Queensland, Brisbane, Queensland, Australia
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Correa BT, Silva GSS, Mendes WJS, Maia ADM, Aleluia ACM, Fonseca TCC, da Guarda CC, Gonçalves MDS, Aleluia MM. Association of the clinical profile and overall survival of pediatric patients with acute lymphoblastic leukemia. Front Pediatr 2023; 11:1223889. [PMID: 37744444 PMCID: PMC10513176 DOI: 10.3389/fped.2023.1223889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 08/25/2023] [Indexed: 09/26/2023] Open
Abstract
Introduction The clarification of etiopathology, the improvement of chemotherapy regimens and their risk stratifications, and the improvement in treatment support have increased the survival of children and adolescents affected by Acute Lymphoblastic Leukemia (ALL) past few years. This study aimed to estimate overall survival (OS) and event-free survival (EFS) in an onco-hematology treatment center in Brazil, reports the main clinical-laboratory characteristics of patients at diagnosis, verify the frequency of treatment-related adverse effects and the main causes of death. Material and methods Retrospective analysis involving patients diagnosed with ALL, treated with the protocol of the Brazilian Group for Treatment of Leukemias in Childhood (GBTLI), between 2010 and 2020 was carried out; the outcomes (relapse, deaths, development of new neoplasms) were analyzed SPSS® software was used for the statistical analyses, and the p-value was considered significant when less than 0.05 for all analyses. Results 109 patients were included in the study; the median age was 5 years, with a slight predominance of males. Sixty-six patients were classified as high-risk (HR) group and 43 patients were classified as low-risk (LR) group. After 5 years of diagnosis, the OS was 71.5%, and the EFS was 65%. No statistical difference was found between the HR and LR groups for OS and EFS, while leukocyte counts were statistically associated with the outcome of death (p = 0.028). Among the patients, 28 (25.6%) died due to infection accounting 46.4% of death causes. Among the 34 patients with unfavorable outcomes (death and/or relapse), 32 had no research for the minimal residual disease at the end of remission induction, and 25 were not investigated for the presence of chromosomal abnormalities. The most reported complications and treatment-related adverse effects were increased liver transaminases (85.9%), airway infection (79.4%), oral mucositis (67.2%), febrile neutropenia (64.4%), and diarrhea (36.4%). Conclusions The rates of OS and EFS obtained in this cohort are similar to those obtained in the few previous similar studies in Brazil and lower than those carried out in developed countries. The unavailability of prognostic tests may have hindered risk stratification and influenced the results obtained.
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Affiliation(s)
- Bruno Terra Correa
- Departamento de Ciências Biológicas, Laboratório de Patologia Aplicada e Genética, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brasil
| | - Gabriela Sales Serra Silva
- Departamento de Ciências Biológicas, Laboratório de Patologia Aplicada e Genética, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brasil
| | - Webert Joaquim Silva Mendes
- Departamento de Ciências Biológicas, Laboratório de Patologia Aplicada e Genética, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brasil
| | | | - Augusto Cezar Magalhães Aleluia
- Departamento de Ciências Naturais, Universidade Estadual do Sudoeste da Bahia-Campus de Vitória da Conquista, Vitória da Conquista, Bahia, Brasil
| | | | - Caroline Conceição da Guarda
- Departamento de Ciências Biológicas, Laboratório de Patologia Aplicada e Genética, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brasil
| | - Marilda de Souza Gonçalves
- Laboratório de Investigação Genética e Hematologia Translacional, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Bahia, Brasil
| | - Milena Magalhães Aleluia
- Departamento de Ciências Biológicas, Laboratório de Patologia Aplicada e Genética, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brasil
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Cho E, Dietrich MS, Friedman DL, Gilmer MJ, Gerhardt CA, Given BA, Hendricks-Ferguson VL, Hinds PS, Akard TF. Effects of a Web-Based Pediatric Oncology Legacy Intervention on the Coping of Children With Cancer. Am J Hosp Palliat Care 2023; 40:34-42. [PMID: 35535490 DOI: 10.1177/10499091221100809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Recurrent or refractory cancer often results in substantial and extensive physical, emotional, psychosocial, and spiritual burdens for children and their families. However, the therapeutic benefits of legacy interventions in children with recurrent or refractory cancer have been examined only recently, with limited attention to specific effects on children's coping abilities. OBJECTIVE The purpose of this study was to determine the effects of a digital storytelling-legacy intervention on the adaptive coping of children with recurrent or refractory cancer. METHODS This study used a 2-arm randomized, waitlist-controlled trial design. A total of 150 children with recurrent or refractory cancer and their parents were recruited via Facebook advertisements. RESULTS The analysis sample included 92 dyads (35-intervention group, 57-control group). The legacy intervention showed small and statistically nonsignificant effects on primary-control and disengagement coping strategies among children with recurrent or refractory cancer. CONCLUSIONS Legacy interventions using readily accessible digital storytelling have the potential to enhance the adaptive coping skills among children with recurrent or refractory cancer. Further research should determine how to enhance interventions tailored to this population to optimize the benefits.
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Affiliation(s)
- Eunji Cho
- School of Nursing, 5718Vanderbilt University, Nashville, TN, USA
| | - Mary S Dietrich
- School of Nursing, 5718Vanderbilt University, Nashville, TN, USA.,School of Medicine, 5718Vanderbilt University, Nashville, TN, USA
| | - Debra L Friedman
- Division of Hematology-Oncology, Department of Pediatrics, 12328Vanderbilt University Medical Center, Nashville, TN, USA.,Vanderbilt-Ingram Cancer Center, Nashville, TN, USA
| | - Mary Jo Gilmer
- School of Nursing, 5718Vanderbilt University, Nashville, TN, USA.,School of Medicine, 5718Vanderbilt University, Nashville, TN, USA
| | - Cynthia A Gerhardt
- Departments of Pediatrics and Psychology, 2647The Ohio State University, Columbus, OH, USA.,Center for Biobehavioral Health, 51711The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Barbara A Given
- College of Nursing, 3078Michigan State University, East Lansing, MI, USA
| | | | - Pamela S Hinds
- Department of Nursing Science, Professional Practice and Quality Outcomes, 8404Children's National Health System, Washington, DC, USA.,Department of Pediatrics, 8367George Washington University, Washington, DC, USA
| | - Terrah Foster Akard
- School of Nursing, 5718Vanderbilt University, Nashville, TN, USA.,School of Medicine, 5718Vanderbilt University, Nashville, TN, USA
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Ahmad SM, Ahmed BS, Khidhir KG, Rahman HS. Prospective quantitative gene expression analysis of kallikrein-related peptidase KLK10 as a diagnostic biomarker for childhood acute lymphoblastic leukemia. PeerJ 2022; 10:e13489. [PMID: 35669967 PMCID: PMC9165590 DOI: 10.7717/peerj.13489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 05/03/2022] [Indexed: 01/17/2023] Open
Abstract
Background The most common malignancy in children is acute lymphoblastic leukemia (ALL). This study aimed to explore KLK10 mRNA expression as a potential diagnostic biomarker for ALL in children and to examine the effect of chemotherapy on KLK10 mRNA expression following the induction and after three months of receiving chemotherapy. Methods In this prospective study, total RNA was extracted from blood samples of 23 pediatric ALL patients on diagnosis, after one month and three months of receiving chemotherapy. Healthy pediatric volunteers (n = 12) were selected as control individuals. After cDNA synthesis, KLK10 mRNA gene expression levels were quantified using quantitative real-time PCR (qRT-PCR). Results KLK10 mRNA expression levels were significantly decreased in leukemic cells compared to their levels in cells of normal blood samples (p = 0.0001). KLK10 expression levels in ALL patients after one month and three months of receiving chemotherapy decreased compared to normal blood samples (p < 0.0001 and p = 0.0175 respectively). The expression level of KLK10 mRNA in ALL patients after one month of chemotherapy was decreased compared to their level on diagnosis (p = 0.4413). KLK10 mRNA expression levels in ALL patients after three months of chemotherapy were increased compared to their level on diagnosis (p = 0.0602). The ROC curve illustrated that KLK10 mRNA expression could very efficiently discriminate ALL patients from normal counterparts (AUC=0.886, 95% CI [0.7720-1.000], SE = 0.0582, p = 0.0004). Conclusion KLK10 mRNA expression could serve as a potential diagnostic molecular biomarker for ALL in children.
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Affiliation(s)
- Shwan Majid Ahmad
- Department of Biochemistry, College of Medicine, University of Sulaimani, Sulaimaniyah, Iraq
| | - Basima Sadq Ahmed
- Department of Biochemistry & Clinical Chemistry, College of Pharmacy, University of Sulaimani, Sulaimaniyah, Iraq
| | - Karzan Ghafur Khidhir
- Department of Biology, College of Science, University of Sulaimani, Sulaimaniyah, Iraq
| | - Heshu Sulaiman Rahman
- Department of Physiology, College of Medicine, University of Sulaimani, Sulaimaniyah, Iraq
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5
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Musta E, van Geloven N, Anninga J, Gelderblom H, Fiocco M. Short-term and long-term prognostic value of histological response and intensified chemotherapy in osteosarcoma: a retrospective reanalysis of the BO06 trial. BMJ Open 2022; 12:e052941. [PMID: 35537786 PMCID: PMC9092180 DOI: 10.1136/bmjopen-2021-052941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVES Cure rate models accounting for cured and uncured patients, provide additional insights into long and short-term survival. We aim to evaluate the prognostic value of histological response and chemotherapy intensification on the cure fraction and progression-free survival (PFS) for the uncured patients. DESIGN Retrospective analysis of a randomised controlled trial, MRC BO06 (EORTC 80931). SETTING Population-based study but proposed methodology can be applied to other trial designs. PARTICIPANTS A total of 497 patients with resectable highgrade osteosarcoma, of which 118 were excluded because chemotherapy was not started, histological response was not reported, abnormal dose was reported or had disease progression during treatment. INTERVENTIONS Two regimens with the same anticipated cumulative dose (doxorubicin 6×75 mg/m2/week; cisplatin 6×100 mg/m2/week) over different time schedules: every 3 weeks in regimen-C and every 2 weeks in regimen-DI. PRIMARY AND SECONDARY OUTCOME MEASURES The primary outcome is PFS computed from end of treatment because cure, if it occurs, may happen at any time during treatment. A mixture cure model is used to study the effect of histological response and intensified chemotherapy on the cure status and PFS for the uncured patients. RESULTS Histological response is a strong prognostic factor for the cure status (OR 3.00, 95% CI 1.75 to 5.17), but it has no clear effect on PFS for the uncured patients (HR 0.78, -95% CI 0.53 to 1.16). The cure fractions are 55% (46%-63%) and 29% (22%-35%), respectively, among patients with good and poor histological response (GR, PR). The intensified regimen was associated with a higher cure fraction among PR (OR 1.90, 95% CI 0.93 to 3.89), with no evidence of effect for GR (OR 0.78, 95% CI 0.38 to 1.59). CONCLUSIONS Accounting for cured patients is valuable in distinguishing the covariate effects on cure and PFS. Estimating cure chances based on these prognostic factors is relevant for counselling patients and can have an impact on treatment decisions. TRIAL REGISTRATION NUMBER ISRCTN86294690.
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Affiliation(s)
- Eni Musta
- Korteweg-de Vries Institute for Mathematics, University of Amsterdam, Amsterdam, The Netherlands
| | - Nan van Geloven
- Department of Biomedical Data Science, Leiden University Medical Center, Leiden, The Netherlands
| | - Jakob Anninga
- Department of Solid Tumours, Princess Máxima Centre, Utrecht, The Netherlands
| | - Hans Gelderblom
- Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | - Marta Fiocco
- Department of Biomedical Data Science, Leiden University Medical Center, Leiden, The Netherlands
- Department of Solid Tumours, Princess Máxima Centre, Utrecht, The Netherlands
- Mathematical Institute, Leiden University, Leiden, The Netherlands
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6
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Jensen KS, Oskarsson T, Lähteenmäki PM, Flaegstad T, Jónsson ÓG, Svenberg P, Schmiegelow K, Heyman M, Norén-Nyström U, Schrøder H, Albertsen BK. Temporal changes in incidence of relapse and outcome after relapse of childhood acute lymphoblastic leukemia over three decades; a Nordic population-based cohort study. Leukemia 2022; 36:1274-1282. [PMID: 35314777 DOI: 10.1038/s41375-022-01540-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 02/11/2022] [Accepted: 03/01/2022] [Indexed: 11/09/2022]
Abstract
Relapse remains the main obstacle to curing childhood acute lymphoblastic leukemia (ALL). The aims of this study were to compare incidence of relapse, prognostic factors, and survival after relapse between three consecutive Nordic Society of Pediatric Hematology and Oncology trials. Relapse occurred as a primary event in 638 of 4 458 children (1.0-14.9 years) diagnosed with Ph-negative ALL between 1992 and 2018. The 5-year cumulative incidence of relapse was 17.3% (95% CI 15.4-19.2%) and 16.5% (95% CI 14.3-18.8%) for patients in the ALL1992 and ALL2000 trials, respectively, but decreased to 8.4% (95% CI 7.0-10.1%) for patients in the ALL2008 trial. No changes in duration of first complete remission and site of relapse were observed over time; however, high hyperdiploidy, and t(12;21) decreased in the ALL2008 trial. The 4-year overall survival after relapse was 56.6% (95% CI 52.5-60.5%) and no statistically significant temporal improvements were observed. Age ≥10 years, T-cell immunophenotype, bone-marrow involvement, early and very early relapse, hypodiploidy, and Down syndrome all independently predicted worse outcome after relapse. Improvements in the primary treatment of childhood ALL has resulted in fewer relapses. However, failure to improve outcome of remaining relapses suggests a selection of harder-to-cure relapses and calls for new therapeutic strategies.
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Affiliation(s)
- Karen Schow Jensen
- Department of Paediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Trausti Oskarsson
- Department of Pediatric Oncology, Karolinska University Hospital, Stockholm, Sweden.,Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institute, Stockholm, Sweden
| | - Päivi M Lähteenmäki
- Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institute, Stockholm, Sweden.,Department of Pediatric and Adolescent Hematology/Oncology, Turku University Hospital, FICAN-west, and Turku University, Turku, Finland
| | - Trond Flaegstad
- Department of Pediatrics, Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway.,Department of Pediatrics, University Hospital of North Norway, Tromsø, Norway
| | | | - Petter Svenberg
- Department of Pediatric Oncology, Karolinska University Hospital, Stockholm, Sweden
| | - Kjeld Schmiegelow
- Department of Pediatrics and Adolescent Medicine, Copenhagen University Hospital, Copenhagen, Denmark.,Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Mats Heyman
- Department of Pediatric Oncology, Karolinska University Hospital, Stockholm, Sweden
| | | | - Henrik Schrøder
- Department of Paediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Birgitte Klug Albertsen
- Department of Paediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark. .,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.
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Childhood cancer in high resource settings. Cancer Epidemiol 2021; 71:101838. [PMID: 33495096 DOI: 10.1016/j.canep.2020.101838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 09/25/2020] [Accepted: 10/05/2020] [Indexed: 11/22/2022]
Abstract
Treatment of childhood cancer in High income countries (HIC) has been a success story of the 20th century with data demonstrating ever increasing survival. Some countries (for example, the UK) have national and regional registries providing high quality data, whilst in other countries the lack of population based data makes comparison impossible. In middle and low income countries (MIC and LIC) the incidence of childhood cancer appears to be lower than in HIC, almost certainly due to the lack of diagnosing and reporting of cases. There may be poor understanding and recognition of symptoms, presentation to traditional healers, poor access to healthcare facilities in rural areas and lack of diagnostic testing. Once on treatment, abandonment of further care can be multifactorial in underlying cause but subsequent relapse and death may add to suspicion of "western" medicine. Additionally, the presenting symptoms of childhood cancer can mimic common infectious diseases such as malaria so that cases remain undiagnosed. By reflecting on some common examples of childhood cancer it can be helpful to identify the points on the pathway to diagnosis and treatment which demonstrate the differences between HIC and MIC/LIC. Some interventions, such as funding for travel to treatment centres, accommodation and treatment, can make the difference between some treatment and no treatment. Highlighting these opportunities for change will improve outcomes in childhood cancer and raise standards of care for paediatrics in general. We have described the pathway to diagnosis and management of childhood cancers in HIC and presented the pathways for common malignancies in HIC and comparators for MIC/LIC to encourage supportive dialogue to improve measures to widen global access to diagnosis and management for children with these conditions. A longer term goal would be to support registries for population-based data collection as part of wider understanding of cancer on a global scale.
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Hills RK. Evaluating sixty years of UK trials research in acute myeloid leukaemia: lessons for trial design, past, present and future. Br J Haematol 2019; 188:29-35. [DOI: 10.1111/bjh.16357] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Robert K. Hills
- Nuffield Department of Population Health University of Oxford Oxford UK
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9
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Zhang W, Kuang P, Liu T. Prognostic significance of CDKN2A/B deletions in acute lymphoblastic leukaemia: a meta-analysis. Ann Med 2019; 51:28-40. [PMID: 30592434 PMCID: PMC7857473 DOI: 10.1080/07853890.2018.1564359] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Cyclin-dependent kinase inhibitor 2A/B (CDKN2A/B) genes are frequently altered in acute lymphoblastic leukaemia (ALL) patients. The aim of this meta-analysis was to comprehensively assess the prognostic value of CDKN2A/B deletions in ALL patients. METHODS Systematic literature review was conducted in PubMed, Embase and Cochrane databases up to July 2018. Pooled hazard ratios (HRs) with 95% confidence intervals (CIs) were calculated with fixed-effects or random-effects models. RESULTS A total of thirteen studies including 2857 patients were eligible for this meta-analysis. Combined HRs suggested that CDKN2A/B deletions were poor prognostic factors for both overall survival (OS) (HR = 2.15, 95% CI 1.82-2.54) and event-free survival (EFS)/disease-free survival (DFS)/relapse-free survival (RFS) (HR = 2.16, 95% CI 1.73-2.69). The adverse impact remained significant in both adult and paediatric ALL patients, and also in subgroups by ethnicity, ALL type, detection method of CDKN2A/B deletions, statistical method and endpoint. CONCLUSIONS Our findings suggested that CDKN2A/B deletions were associated with poor prognosis independently in both adult and childhood ALL patients. Inclusion of CDKN2A/B status may further improve the risk stratification of ALL patients. Key Messages Although numerous studies have explored the prognostic significance of cyclin-dependent kinase inhibitor 2A/B (CDKN2A/B) deletions in acute lymphoblastic leukaemia (ALL) patients, the results remain conflicting. In this meta-analysis, we found that CDKN2A/B deletions were independent poor prognostic markers for both adult and paediatric ALL patients. Our findings justify the inclusion of CDKN2A/B status in the risk stratification of ALL patients.
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Affiliation(s)
- Wanhua Zhang
- a Department of Haematology , West China Hospital, Sichuan University , Chengdu , P.R. China
| | - Pu Kuang
- a Department of Haematology , West China Hospital, Sichuan University , Chengdu , P.R. China
| | - Ting Liu
- a Department of Haematology , West China Hospital, Sichuan University , Chengdu , P.R. China
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10
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Drozdov D, Bonaventure A, Nakata K, Suttorp M, Belot A. Temporal trends in the proportion of "cure" in children, adolescents, and young adults diagnosed with chronic myeloid leukemia in England: A population-based study. Pediatr Blood Cancer 2018; 65:e27422. [PMID: 30168243 DOI: 10.1002/pbc.27422] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 06/19/2018] [Accepted: 07/25/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND Survival probability in children, adolescents, and young adults with chronic myeloid leukemia (CML) has dramatically improved during recent years. Tyrosine kinase inhibitors (TKI), targeted drugs developed for patients with CML, were introduced in 2001 in England. We here quantify the trends in the "cure" proportion according to the year of diagnosis. METHODS We included all children, adolescents, and young patients with CML (0 to 24 years) diagnosed in England during 1980 to 2005. We fitted mixture cure models to estimate the "cure" proportion and the median survival time among the "uncured" patients according to the year of diagnosis, adjusted for age at diagnosis. RESULTS The "cure" proportion increased dramatically between 1980 and 2005, from under 10% to over 80%, while conversely, the median survival time of "uncured" patients decreased slightly between 1980 and 1999, with the trend from 2000 being uncertain. CONCLUSIONS The striking improvement of the "cure" fraction in young patients with CML since the early 1980s is concomitant with improvement of treatment, especially the allogeneic hematopoietic stem-cell transplant and, later, the introduction of TKI. The trends over the last years (2000-2005) remain, however, uncertain and would benefit from further studies with more recent data and updated follow-up.
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Affiliation(s)
- Daniel Drozdov
- Cancer Survival Group, Department of Non-Communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
- Division of Pediatric Oncology, Department of Pediatrics, Cantonal Hospital of Aarau, Aarau, Switzerland
| | - Audrey Bonaventure
- Cancer Survival Group, Department of Non-Communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
| | - Kayo Nakata
- Cancer Survival Group, Department of Non-Communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
- Cancer Control Centre, Osaka International Cancer Institute, Osaka, Japan
| | - Meinolf Suttorp
- Division of Pediatric Hematology-Oncology-Blood and Marrow Transplantation, University Hospital Carl Gustav Carus, Dresden, Germany
| | - Aurélien Belot
- Cancer Survival Group, Department of Non-Communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
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11
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Affiliation(s)
- Robert Hills
- Centre for Trials Research; Cardiff University; Cardiff UK
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