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Miller P, Patel SR, Skinner R, Dignan F, Richter A, Jeffery K, Khan A, Heath PT, Clark A, Orchard K, Snowden JA, de Silva TI. Joint consensus statement on the vaccination of adult and paediatric haematopoietic stem cell transplant recipients: Prepared on behalf of the British society of blood and marrow transplantation and cellular therapy (BSBMTCT), the Children's cancer and Leukaemia Group (CCLG), and British Infection Association (BIA). J Infect 2023; 86:1-8. [PMID: 36400155 DOI: 10.1016/j.jinf.2022.11.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 11/10/2022] [Indexed: 11/17/2022]
Abstract
Haematopoietic stem cell transplant (HSCT) recipients have deficiencies in their adaptive immunity against vaccine preventable diseases. National and International guidance recommends that HSCT recipients are considered 'never vaccinated' and offered a comprehensive course of revaccination. This position statement aims to draw upon the current evidence base and existing guidelines, and align this with national vaccine availability and licensing considerations in order to recommend a pragmatic and standardised re-vaccination schedule for adult and paediatric HSCT recipients in the UK.
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Affiliation(s)
- Pde Miller
- British Society of Blood and Marrow Transplantation and Cellular Therapy, UK
| | - S R Patel
- Paediatric Department, Croydon Health Services NHS Trust, Croydon, UK
| | - R Skinner
- University of Newcastle upon Tyne, Newcastle upon Tyne, UK
| | - F Dignan
- Department of Clinical Haematology, University of Manchester, Manchester, UK
| | - A Richter
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
| | - K Jeffery
- Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - A Khan
- St. James' Hospital, Leeds, UK
| | - P T Heath
- Vaccine Institute, Institute of Infection and Immunity, St. George's, University of London, London, UK
| | - A Clark
- NHS Greater Glasgow and Clyde, Glasgow, UK
| | - K Orchard
- Wessex Blood and Marrow Transplant and Cellular Therapy Program, Department of Haematology, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - J A Snowden
- Department of Haematology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK; Department of Oncology and Metabolism, Medical School, The University of Sheffield, Sheffield, UK
| | - T I de Silva
- Department of Infection, Immunity and Cardiovascular Disease, Medical School, The University of Sheffield, Sheffield, UK.
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Bate J, Borrow R, Chisholm J, Clarke SC, Dixon E, Faust SN, Galanopoulou A, Goldblatt D, Heath PT, Maishman T, Mapstone S, Patel SR, Williams AP, Gray JC. Thirteen-Valent Pneumococcal Conjugate Vaccine in Children With Acute Lymphoblastic Leukemia: Protective Immunity Can Be Achieved on Completion of Treatment. Clin Infect Dis 2020; 71:1271-1280. [PMID: 31586206 DOI: 10.1093/cid/ciz965] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 10/02/2019] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Children with acute lymphoblastic leukemia (ALL) are at increased risk of developing invasive pneumococcal disease. This study describes the immunogenicity of 13-valent pneumococcal conjugate vaccine (PCV13) during and after chemotherapy. METHODS Children with ALL were allocated to study groups and received a single dose of PCV13: group 1, maintenance chemotherapy; group 2, end of chemotherapy; group 3, 6 months after chemotherapy. A protective vaccine response was defined as at least 10 of 12 serotypes (or >83% of serotypes with data) achieving postvaccination serotype-specific immunoglobulin G ≥0.35 µg/mL and ≥4-fold rise, compared to prevaccination at 1 and 12 months. RESULTS One hundred eighteen children were recruited. Only 12.8% (5/39; 95% confidence interval [CI], 4.3%-27.4%) of patients vaccinated during maintenance (group 1) achieved a protective response at 1 month postvaccination and none had a protective response at 12 months. For group 2 patients, 59.5% (22/37; 95% CI, 42.1%-75.3%) achieved a response at 1 month and 37.9% (11/29; 95% CI, 20.7%-57.7%) maintained immunity at 12 months. For group 3 patients, 56.8% (21/37; 95% CI, 39.5%-72.9%) achieved a protective response at 1 month and 43.3% (13/30; 95% CI, 25.5%-62.6%) maintained immunity at 12 months. CONCLUSIONS This study demonstrated that the earliest time point at which protective immunity can be achieved in children with ALL is on completion of chemotherapy. This is earlier than current recommendations and may improve protection during a period when children are most susceptible to infection. CLINICAL TRIALS REGISTRATION EudraCT 2009-011587-11.
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Affiliation(s)
- Jessica Bate
- University Hospital Southampton National Health Service Foundation Trust, Southampton, England, United Kingdom
| | - Ray Borrow
- Vaccine Evaluation Unit, Public Health England, Manchester Royal Infirmary, Manchester, England, United Kingdom
| | - Julia Chisholm
- Department of Paediatric Oncology, Royal Marsden Hospital, Sutton, Surrey, United Kingdom
| | - Stuart C Clarke
- Faculty of Medicine, University of Southampton, Southampton, England, United Kingdom
| | - Elizabeth Dixon
- Faculty of Medicine, University of Southampton, Southampton, England, United Kingdom
| | - Saul N Faust
- Faculty of Medicine, University of Southampton, Southampton, England, United Kingdom
- National Institute of Health Research Southampton Clinical Research Facility, National Institute of Health Research Southampton Biomedical Research Centre and Southampton National Institute of Health Research Cancer Research United Kingdom Experimental Cancer Medicine Centre, University Hospital Southampton National Health Service Foundation Trust, England, United Kingdom
| | - Angeliki Galanopoulou
- University of Southampton, Clinical Trials Unit, Southampton, England, United Kingdom
| | - David Goldblatt
- Great Ormond Street Institute of Child Health Biomedical Research Centre, University College London, London, England, United Kingdom
| | - Paul T Heath
- Paediatric Infectious Diseases Research Group & Vaccine Institute, St George's University of London and St George's University Hospitals National Health Service Trust, London, England, United Kingdom
| | - Tom Maishman
- University of Southampton, Clinical Trials Unit, Southampton, England, United Kingdom
| | - Susan Mapstone
- University of Southampton, Clinical Trials Unit, Southampton, England, United Kingdom
| | - Soonie R Patel
- Department of Paediatrics, Croydon University Hospital, Croydon, England, United Kingdom
| | - Antony P Williams
- Faculty of Medicine, University of Southampton, Southampton, England, United Kingdom
- National Institute of Health Research Southampton Clinical Research Facility, National Institute of Health Research Southampton Biomedical Research Centre and Southampton National Institute of Health Research Cancer Research United Kingdom Experimental Cancer Medicine Centre, University Hospital Southampton National Health Service Foundation Trust, England, United Kingdom
| | - Juliet C Gray
- University Hospital Southampton National Health Service Foundation Trust, Southampton, England, United Kingdom
- Faculty of Medicine, University of Southampton, Southampton, England, United Kingdom
- National Institute of Health Research Southampton Clinical Research Facility, National Institute of Health Research Southampton Biomedical Research Centre and Southampton National Institute of Health Research Cancer Research United Kingdom Experimental Cancer Medicine Centre, University Hospital Southampton National Health Service Foundation Trust, England, United Kingdom
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Williams AP, Bate J, Brooks R, Chisholm J, Clarke SC, Dixon E, Faust SN, Galanopoulou A, Heath PT, Maishman T, Mapstone S, Patel SR, Vora A, Wilding SA, Gray JC. Immune reconstitution in children following chemotherapy for acute leukemia. EJHAEM 2020; 1:142-151. [PMID: 35847713 PMCID: PMC9176016 DOI: 10.1002/jha2.27] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/15/2020] [Accepted: 05/20/2020] [Indexed: 11/09/2022]
Abstract
Although survival rates for pediatric acute lymphoblastic leukemia are now excellent, this is at the expense of prolonged chemotherapy regimens. We report the long-term immune effects in children treated according to the UK Medical Research Council UKALL 2003 protocol. Peripheral blood lymphocyte subsets and immunoglobulin levels were studied in 116 participants, at six time points, during and for 18-month following treatment, with 30-39 patients analyzed at each time point. Total lymphocytes were reduced during maintenance chemotherapy and remained low 18 months following treatment completion. CD4 T cells remained significantly reduced 18 months after treatment, but CD8 cells and natural killer cells recovered to normal values. The fall in naïve B-cell numbers during maintenance was most marked, but numbers recovered rapidly after cessation of treatment. Memory B cells, particularly nonclass-switched memory B cells, remained below normal levels 18 months following treatment. All immunoglobulin subclasses were reduced during treatment compared to normal values, with IgM levels most affected. This study demonstrates that immune reconstitution differs between lymphocyte compartments. Although total B-cell numbers recover rapidly, disruption of memory/naïve balance persists and T-cell compartment persist at 18 months. This highlights the impact of modern chemotherapy regimens on immunity, and thus, infectious susceptibility and response to immunization.
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Affiliation(s)
- Anthony P. Williams
- Faculty of Medicine and Institute for Life SciencesUniversity of SouthamptonSouthamptonUK
| | - Jessica Bate
- NIHR Southampton Clinical Research FacilityNIHR Southampton Biomedical Research Centre and Southampton NIHR CRUK Experimental Cancer Medicine CentreUniversity Hospital Southampton NHS Foundation TrustSouthamptonUK
| | - Rachael Brooks
- Faculty of Medicine and Institute for Life SciencesUniversity of SouthamptonSouthamptonUK
| | - Julia Chisholm
- Department of Paediatric OncologyRoyal Marsden HospitalSuttonSurrey
| | - Stuart C. Clarke
- Faculty of Medicine and Institute for Life SciencesUniversity of SouthamptonSouthamptonUK
| | | | - Saul N. Faust
- Faculty of Medicine and Institute for Life SciencesUniversity of SouthamptonSouthamptonUK
| | | | - Paul T. Heath
- Paediatric Infectious Diseases Research Group & Vaccine InstituteSt. George's University of London and St. Georges University Hospitals NHS TrustLondonUK
| | | | - Susan Mapstone
- NIHR Southampton Clinical Research FacilityNIHR Southampton Biomedical Research Centre and Southampton NIHR CRUK Experimental Cancer Medicine CentreUniversity Hospital Southampton NHS Foundation TrustSouthamptonUK
| | | | - Ajay Vora
- Department of Paediatric HaematologyGreat Ormond Street HospitalLondonUK
| | | | - Juliet C. Gray
- Faculty of Medicine and Institute for Life SciencesUniversity of SouthamptonSouthamptonUK
- NIHR Southampton Clinical Research FacilityNIHR Southampton Biomedical Research Centre and Southampton NIHR CRUK Experimental Cancer Medicine CentreUniversity Hospital Southampton NHS Foundation TrustSouthamptonUK
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Bate J, Baker S, Breuer J, Chisholm JC, Gray J, Hambleton S, Houlton A, Jit M, Lowis S, Makin G, O'Sullivan C, Patel SR, Phillips R, Ransinghe N, Ramsay ME, Skinner R, Wheatley K, Heath PT. PEPtalk2: results of a pilot randomised controlled trial to compare VZIG and aciclovir as postexposure prophylaxis (PEP) against chickenpox in children with cancer. Arch Dis Child 2019; 104:25-29. [PMID: 29730641 DOI: 10.1136/archdischild-2017-314212] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 02/16/2018] [Accepted: 04/17/2018] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To determine the likely rate of patient randomisation and to facilitate sample size calculation for a full-scale phase III trial of varicella zoster immunoglobulin (VZIG) and aciclovir as postexposure prophylaxis against chickenpox in children with cancer. DESIGN Multicentre pilot randomised controlled trial of VZIG and oral aciclovir. SETTING England, UK. PATIENTS Children under 16 years of age with a diagnosis of cancer: currently or within 6 months of receiving cancer treatment and with negative varicella zoster virus (VZV) serostatus at diagnosis or within the last 3 months. INTERVENTIONS Study participants who have a significant VZV exposure were randomised to receive PEP in the form of VZIG or aciclovir after the exposure. MAIN OUTCOME MEASURES Number of patients registered and randomised within 12 months of the trial opening to recruitment and incidence of breakthrough varicella. RESULTS The study opened in six sites over a 13-month period. 482 patients were screened for eligibility, 32 patients were registered and 3 patients were randomised following VZV exposure. All three were randomised to receive aciclovir and there were no cases of breakthrough varicella. CONCLUSIONS Given the limited recruitment to the PEPtalk2 pilot, it is unlikely that the necessary sample size would be achievable using this strategy in a full-scale trial. The study identified factors that could be used to modify the design of a definitive trial but other options for defining the best means to protect such children against VZV should be explored. TRIAL REGISTRATION NUMBER ISRCTN48257441, EudraCT number: 2013-001332-22, sponsor: University of Birmingham.
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Affiliation(s)
- Jessica Bate
- Department of Paediatric Oncology, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Stephen Baker
- Cancer Research UK Clinical Trials Unit (CRCTU), School of Cancer Sciences, University of Birmingham, Birmingham, UK
| | - Judith Breuer
- Division of Infection and Immunity, University College London, London, UK
| | - Julia C Chisholm
- Children and Young People's Unit, Royal Marsden NHS Foundation Trust, Sutton, UK
| | - Juliet Gray
- Department of Paediatric Oncology, University Hospital Southampton NHS Foundation Trust, Southampton, UK.,Cancer Sciences Academic Unit, University of Southampton, Southampton, UK
| | - Sophie Hambleton
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK.,Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Aimee Houlton
- Cancer Research UK Clinical Trials Unit (CRCTU), School of Cancer Sciences, University of Birmingham, Birmingham, UK
| | - Mark Jit
- Modelling and Economics Unit, Public Health England, London, UK.,Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK
| | - Stephen Lowis
- School of Clinical Sciences, University of Bristol, London, UK
| | - Guy Makin
- Division of Cancer Sciences, University of Manchester, Manchester, UK
| | - Catherine O'Sullivan
- Paediatric Infectious Diseases Research Group and Vaccine Institute, Institute of Infection and Immunity, St. Georges, University of London, London, UK
| | - Soonie R Patel
- Department of Paediatrics, Croydon Health Services NHS Trust, London, UK
| | | | - Neil Ransinghe
- Parent representative, Paediatric Oncology Reference Team, UK
| | | | - Roderick Skinner
- Great North Children's Hospital, Department of Paediatric and Adolescent Haematology/Oncology, Newcastle upon Tyne, UK
| | - Keith Wheatley
- Cancer Research UK Clinical Trials Unit (CRCTU), School of Cancer Sciences, University of Birmingham, Birmingham, UK
| | - Paul T Heath
- Paediatric Infectious Diseases Research Group and Vaccine Institute, Institute of Infection and Immunity, St. Georges, University of London, London, UK
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Successful Prevention of Varicella Outbreak With Oral Aciclovir Following Party for Pediatric Oncology Patients. J Pediatr Hematol Oncol 2018; 40:488-489. [PMID: 29554023 DOI: 10.1097/mph.0000000000001125] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hung TY, Kotecha RS, Blyth CC, Steed SK, Thornton RB, Ryan AL, Cole CH, Richmond PC. Immunogenicity and safety of single-dose, 13-valent pneumococcal conjugate vaccine in pediatric and adolescent oncology patients. Cancer 2017; 123:4215-4223. [PMID: 28696530 DOI: 10.1002/cncr.30764] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 03/02/2017] [Accepted: 04/12/2017] [Indexed: 11/12/2022]
Abstract
BACKGROUND Children receiving immunosuppressive treatment for cancer are at high risk for invasive pneumococcal disease. The 13-valent pneumococcal conjugate vaccine (PCV13) can prevent pneumococcal disease in healthy children; however, there is an absence of literature regarding the benefit of PCV13 in immunocompromised children with cancer. METHODS A prospective, open-label cohort study recruited children between ages 1 and 18 years who were receiving active immunosuppressive therapy (AIT) or were within 12 months after completing immunosuppressive therapy (CIT). Blood samples were taken before and 4 weeks after the administration of single-dose PCV13. Serotype-specific immunoglobulin G antibody titers were measured, and titers ≥0.35 μg/mL were considered protective. Solicited side effects were recorded in a 7-day diary after vaccination. RESULTS Eighty-five children were recruited. At baseline, ≤50% had protective antibody titers against Streptococcus pneumoniae for 10 serotypes in the AIT group and for 8 serotypes in the CIT group. Postvaccination, ≥70% had protective antibody titers for 9 and 11 serotypes in the AIT and CIT groups, respectively. Both groups had comparable responses to PCV7 serotypes, whereas a significantly higher proportion in the CIT group achieved protective antibody titers to PCV13 serotypes. There was a low rate of serious adverse events (3.5%). CONCLUSIONS A single-dose of PCV13 is safe and immunogenic in children diagnosed with cancer. All children who are receiving therapy for cancer should receive a single dose of PCV13 as soon as possible after diagnosis, regardless of prior PCV exposure. The current data support the recommendation for an additional dose of PCV13 after the completion of immunosuppressive therapy to provide additional protection against invasive pneumococcal disease. Cancer 2017;123:4215-4223. © 2017 American Cancer Society.
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Affiliation(s)
- Te-Yu Hung
- Department of Haematology and Oncology, Princess Margaret Hospital for Children, Perth, Western Australia, Australia.,School of Paediatrics and Child Health, University of Western Australia, Perth, Western Australia, Australia
| | - Rishi S Kotecha
- Department of Haematology and Oncology, Princess Margaret Hospital for Children, Perth, Western Australia, Australia.,School of Paediatrics and Child Health, University of Western Australia, Perth, Western Australia, Australia.,Telethon Kids Institute, University of Western Australia, Perth, Western Australia, Australia
| | - Christopher C Blyth
- School of Paediatrics and Child Health, University of Western Australia, Perth, Western Australia, Australia.,Telethon Kids Institute, University of Western Australia, Perth, Western Australia, Australia.,PathWest Laboratory Medicine WA, Perth, Western Australia, Australia.,Department of Infectious Diseases, Princess Margaret Hospital for Children, Perth, Western Australia, Australia
| | - Sarah K Steed
- Department of Haematology and Oncology, Princess Margaret Hospital for Children, Perth, Western Australia, Australia
| | - Ruth B Thornton
- School of Paediatrics and Child Health, University of Western Australia, Perth, Western Australia, Australia.,Telethon Kids Institute, University of Western Australia, Perth, Western Australia, Australia
| | - Anne L Ryan
- Department of Haematology and Oncology, Princess Margaret Hospital for Children, Perth, Western Australia, Australia
| | - Catherine H Cole
- Department of Haematology and Oncology, Princess Margaret Hospital for Children, Perth, Western Australia, Australia.,School of Paediatrics and Child Health, University of Western Australia, Perth, Western Australia, Australia.,Telethon Kids Institute, University of Western Australia, Perth, Western Australia, Australia.,PathWest Laboratory Medicine WA, Perth, Western Australia, Australia
| | - Peter C Richmond
- School of Paediatrics and Child Health, University of Western Australia, Perth, Western Australia, Australia.,Telethon Kids Institute, University of Western Australia, Perth, Western Australia, Australia.,Department of Paediatrics, Princess Margaret Hospital for Children, Perth, Western Australia, Australia
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Arora RS, Prabha S, Roy Moulik N, Bagai P. A survey of immunization practices in children with cancer in India. PEDIATRIC HEMATOLOGY ONCOLOGY JOURNAL 2016. [DOI: 10.1016/j.phoj.2016.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Top KA, Pham-Huy A, Price V, Sung L, Tran D, Vaudry W, Halperin SA, De Serres G. Immunization practices in acute lymphocytic leukemia and post-hematopoietic stem cell transplant in Canadian Pediatric Hematology/Oncology centers. Hum Vaccin Immunother 2016; 12:931-6. [PMID: 26962702 DOI: 10.1080/21645515.2015.1115165] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
There are no Canadian immunization guidelines for children treated for malignancy. Guidelines do exist for patients who underwent hematopoietic stem cell transplant (HSCT), but they provide broad timeframes for initiating vaccination; there is no standard schedule. The optimal approach to immunization in these populations is unclear. We sought to describe immunization practices at Canadian Pediatric Hematology/Oncology centers. A 43-item online questionnaire was distributed to the 16 programs in the C(17) research network of pediatric hematology/oncology centers to capture information on timing and criteria for immunization of patients with acute lymphocytic leukemia (ALL) and those who have undergone HSCT. At each center, 1-2 physicians or pharmacists completed the survey to reflect center-wide immunization practices. Responses were received from 11/16 (69%) programs; 11 respondents reported on practices for patients with ALL and 9 reported on practices for patients who are post-HSCT. In 5/11 ALL programs (45%) re-immunization is recommended routinely after chemotherapy, starting 3-6 months post-chemotherapy. In HSCT programs, timing of pneumococcal conjugate vaccination (PCV) varied from 3 months post-HSCT (4 programs) to 12 months post-HSCT (4 programs). Live vaccines were administered 24 months post-HSCT in 8/9 programs. All HSCT programs considered graft-versus-host-disease and 7 considered discontinuation of immunosuppression in immunization decisions. Pediatric hematology/oncology programs were divided in regards to re-immunization of patients with ALL post-chemotherapy. After HSCT, timing of PCV administration varied, with 4 programs initiating immunization later than Canadian guidelines recommend (3-9 months post-HSCT). These findings suggest a need to standardize immunization practices in these populations.
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Affiliation(s)
- Karina A Top
- a Department of Pediatrics , Dalhousie University , Halifax , NS , Canada.,b Canadian Center for Vaccinology, IWK Health Centre , Halifax , NS , Canada
| | - Anne Pham-Huy
- c Department of Pediatrics , University of Ottawa and Children's Hospital of Eastern Ontario , Ottawa , ON , Canada
| | - Victoria Price
- a Department of Pediatrics , Dalhousie University , Halifax , NS , Canada
| | - Lillian Sung
- d Department of Pediatrics , University of Toronto and Hospital for Sick Children , Toronto , ON , Canada
| | - Dat Tran
- d Department of Pediatrics , University of Toronto and Hospital for Sick Children , Toronto , ON , Canada
| | - Wendy Vaudry
- e Department of Pediatrics , University of Alberta and Stollery Children's Hospital , Edmonton , AB , Canada
| | - Scott A Halperin
- a Department of Pediatrics , Dalhousie University , Halifax , NS , Canada.,b Canadian Center for Vaccinology, IWK Health Centre , Halifax , NS , Canada
| | - Gaston De Serres
- f Institut National de Santé Publique du Québec , Québec , QC , Canada
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Villena R, Zubieta M, Hurtado C, Salgado C, Silva G, Fernández J, Villarroel M, Fernández M, Brahm J, O'Ryan M, Santolaya ME. [Seroconversion in response to a reinforced primary hepatitis B vaccination in children with cancer]. ACTA ACUST UNITED AC 2015; 86:236-43. [PMID: 26298296 DOI: 10.1016/j.rchipe.2015.06.012] [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: 08/18/2014] [Accepted: 04/13/2015] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Immune response against vaccine antigens may be impaired in children with cancer. The aim of this study was to evaluate the seroconversion response against hepatitis B vaccination (HBV) at the time of chemotherapy onset and/or remission in children with cancer. PATIENTS AND METHOD Prospective, two-centre, controlled, non-randomised study conducted on children recently diagnosed with cancer, paired with healthy subjects. Cases received HBV at time 0, 1 and 6 months with DNA recombinant HBV at a dose of 20 and 40 μg if < or > than 10 years of age, respectively, at the time of diagnosis for solids tumours and after the remission in case of haematological tumours. Controls received the same schedule, but at of 10 and 20 μg doses, respectively. HBs antibodies were measured in serum samples obtained at 2, 8 and 12 months post-vaccination. Protective titres were defined as > 10 mIU/ml at 8th month of follow up. RESULTS A total of 78 children with cancer and 25 healthy controls were analysed at month 8th of follow up. Seroconversion rates in the cancer group reached 26.9%, with no differences by age, gender or type of tumour (P = .13, .29, and .44, respectively). Control group seroconversion was 100% at the 8th month, with P < .0001 compared with the cancer group. At month 12 of follow up, just 31.9% of children with cancer achieved anti-HBs antibodies > 10 mIU/ml. CONCLUSIONS Vaccination against hepatitis B with three doses of DNA recombinant vaccine at an increased concentration, administrated at the time of onset of chemotherapy and/or remission provided an insufficient immune response in a majority of children with cancer. More immunogenic vaccines should be evaluated in this special population, such as a third generation, with more immunogenic adjuvants, enhanced schedules at 0, 1, 2, 6 month, evaluation of antibody titres at month 8 and 12h to evaluate the need for further booster doses.
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Affiliation(s)
- Rodolfo Villena
- Facultad de Medicina, Universidad de Chile, Santiago, Chile; Hospital de niños Dr. Exequiel González Cortés, Santiago, Chile.
| | - Marcela Zubieta
- Hospital de niños Dr. Exequiel González Cortés, Santiago, Chile; Programa Infantil Nacional de Drogas Antineoplásicas (PINDA), Santiago, Chile; Fundación Nuestros Hijos, Santiago, Chile
| | - Carmen Hurtado
- Facultad de Medicina, Universidad de Chile, Santiago, Chile; Laboratorio de Gastroenterología, Hospital Clínico Universidad de Chile, Santiago, Chile
| | - Carmen Salgado
- Facultad de Medicina, Universidad de Chile, Santiago, Chile; Hospital de niños Dr. Exequiel González Cortés, Santiago, Chile; Programa Infantil Nacional de Drogas Antineoplásicas (PINDA), Santiago, Chile
| | - Gladys Silva
- Hospital de niños Dr. Exequiel González Cortés, Santiago, Chile
| | | | - Milena Villarroel
- Facultad de Medicina, Universidad de Chile, Santiago, Chile; Programa Infantil Nacional de Drogas Antineoplásicas (PINDA), Santiago, Chile; Hospital de niños Dr. Luis Calvo Mackenna, Santiago, Chile
| | | | - Javier Brahm
- Facultad de Medicina, Universidad de Chile, Santiago, Chile; Laboratorio de Gastroenterología, Hospital Clínico Universidad de Chile, Santiago, Chile
| | - Miguel O'Ryan
- Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - María Elena Santolaya
- Facultad de Medicina, Universidad de Chile, Santiago, Chile; Programa Infantil Nacional de Drogas Antineoplásicas (PINDA), Santiago, Chile; Hospital de niños Dr. Luis Calvo Mackenna, Santiago, Chile
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Abstract
BACKGROUND Pediatric leukemia patients are at high risk of invasive pneumococcal disease. The study aim was to determine the antibody response to a 10-valent pneumococcal conjugate vaccine (PCV10) administered during chemotherapy. METHODS An open-label study in pediatric leukemia patients: Group 1 had completed a primary 7-valent (PCV7) course and received a single PCV10 dose. Group 2 were PCV immunization naïve and received 3 doses of PCV10, administered 2 months apart. Serum samples were taken at baseline and 1 month post each PCV10 dose. Antipneumococcal serotype-specific IgG to 10 serotypes were measured by enzyme-linked immunosorbent assay and the functional response to 4 serotypes (1, 6B, 19F and 23F) was measured using opsonophagocytic assays. RESULTS Thirty-nine participants were recruited between May 2010 and January 2011; group 1 (n = 27) and group 2 (n = 12). The diagnosis was acute lymphoblastic leukemia (38) and acute myeloid leukemia (1). Median age was 6.2 years (1.7-17.2 years) with 62% male. The median time from diagnosis to baseline serology was 7.4 months (1.6-36.8 months). At baseline, protective geometric mean concentration above the threshold (>0.35 μg/mL) ranged from 5.3% (serotype 4) to 71% (serotype 19F). More than 60% of participants in both groups were above threshold postimmunization for 7 of the 10 PCV serotypes. Opsonophagocytic assay correlated with enzyme-linked immunosorbent assay for 3 of the 4 serotypes and r ranged from 0.51 to 0.84. An injection-site reaction was reported in 73% (27/37). CONCLUSIONS It is safe to administer PCV10 vaccine during therapy for pediatric leukemia. It provided a satisfactory serum immune response for the majority of vaccine serotypes.
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Luke JL, McDonald L, Jude V, Chan KW, Cuellar NG. Clinical practice implications of immunizations after pediatric bone marrow transplant: a literature review. J Pediatr Oncol Nurs 2012; 30:7-17. [PMID: 23160793 DOI: 10.1177/1043454212462069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The number of pediatric bone marrow transplants is increasing for malignant and nonmalignant diseases. The number of survivors is also increasing, and their long-term health and protection from infection is increasingly important. To prevent infections, it is standard practice to re-immunize pediatric patients after bone marrow transplant (BMT) using the Centers for Disease Control and Prevention immunization guidelines; however, surveys in the United States and other parts of the world indicate that many BMT patients do not receive all the recommended immunizations. A literature review was conducted to identify research based on evidence for immunization following BMT and to recognize barriers to the process. Also, the immunization clinical guidelines from 2000 and 2011 for patients following BMT were compared and an updated clinical protocol and immunization schedule was developed to reflect the current evidence, encourage a change in practice, and discourage fragmented care.
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Affiliation(s)
- Julie L Luke
- Methodist Children's Hospital, San Antonio, TX 78229, USA.
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Preventing varicella in children with malignancies: what is the evidence? Curr Opin Infect Dis 2011; 24:203-11. [PMID: 21455062 DOI: 10.1097/qco.0b013e328345d666] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW The prevention of varicella in children with cancer is generally agreed to be an important goal, because of their elevated risk of varicella zoster virus (VZV)-associated morbidity and mortality. However, there is a lack of consensus on the best means of achieving this. Here, we review the existing evidence in relation to postexposure prophylaxis against varicella in this group and summarize data regarding the role of active vaccination. RECENT FINDINGS Death from varicella during treatment for cancer is now rare, but VZV disease and its prevention remain significant problems in paediatric oncology practice. Measures to reduce VZV exposure amongst seronegative individuals are often neglected. When exposure is known to have occurred, early administration of varicella zoster immune globulin (VZIG) is generally protective against severe and complicated varicella. However, many centres in the UK and Japan use an oral antiviral agent, aciclovir, in place of VZIG. Published evidence for the efficacy of aciclovir as postexposure prophylaxis (PEP) relates mostly to healthy children, with no controlled studies in the immunocompromised. SUMMARY Good evidence already supports the administration of varicella vaccine to healthy susceptible family contacts of children with malignancy, but not to patients themselves. Further data are urgently needed to inform the choice of PEP against VZV in the immunocompromised.
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Crawford NW, Bines JE, Royle J, Buttery JP. Optimizing immunization in pediatric special risk groups. Expert Rev Vaccines 2011; 10:175-86. [PMID: 21332267 DOI: 10.1586/erv.10.157] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This article analyzes the current recommended practices and evidence in the immunization of pediatric 'special risk groups'. Special risk group patients are at higher risk of vaccine-preventable diseases and hence require additional strategies to maximize protection against these diseases. The special risk groups include those with an underlying chronic disease, some of whom are on immunosuppressive therapy to treat that condition. The article uses four special risk groups (acute lymphoblastic leukemia; preterm birth; juvenile idiopathic arthritis; and inflammatory bowel disease), to highlight the management considerations and potential vaccination strategies. The risks, benefits and timing of vaccination in the setting of immunosuppression require detailed discussion with treating clinicians, in particular the use of live-attenuated vaccines. The immunogenicity of vaccines in these special risk groups helps provide the evidence base for their immunization guidelines. Protection can include 'cocooning' (i.e., ensuring appropriate immunizations within the immediate family; e.g., varicella, influenza and pertussis vaccination). Improving timeliness and minimizing missed opportunities to vaccinate individuals with these special risk conditions will also optimize protection from vaccine-preventable diseases.
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Affiliation(s)
- Nigel W Crawford
- SAEFVIC, Murdoch Childrens Research Institute, Melbourne, Australia.
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Margolin JF. Molecular diagnosis and risk-adjusted therapy in pediatric hematologic malignancies: a primer for pediatricians. Eur J Pediatr 2011; 170:419-25. [PMID: 21350806 DOI: 10.1007/s00431-011-1424-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2010] [Accepted: 02/08/2011] [Indexed: 12/17/2022]
Abstract
UNLABELLED Progress in the care of the hematologic malignancies of childhoond has been one of the proudest success stories in modern pediatrics. The cure rates of these diseases have improved from essentially zero in the 1950's and early 1960's to cure rates that range from 65%-90% in modern centers. While the largest improvements have been made in the most common (and the lower risk subtypes) of Acute Lymphoblastic Leukemia (ALL), there has also been significant progress in both the higher risk forms of ALL (i.e. Philadelphia chromosome positive, Ph+ ALL) and in Acute Myeloid Leukemia (AML). This progress has been achieved by the careful and stepwise identification of clinical, cytogenetic, molecular, and most recently response-based prognostic criteria, that now allow oncologists to focus the intensity of the therapy more closely to what is required to cure individual subgroups of patients. CONCLUSION Pediatricians need to be familiar with the changes in diagnostic and therapeutic approaches, because these changes have impact on: the laboratory tests that should be ordered at the time of specialist referral; counseling of patients and their families; and with the advent of "shared care models" pediatricians will need to be more involved in the general, supportive, and long-term care of these patients.
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