Vaccinating Children After Chemotherapy

Status Completed

Clinical Trial Summary

This multi-center open label clinical trial aims to identify predictors of low antibody titers to vaccine antigens in children with ALL who completed chemotherapy in the prior 6 months, and to determine the immunogenicity and safety of diphtheria-tetanus-acellular pertussis-inactivated poliomyelitis-Haemophilus influenzae type b (DTaP-IPV-Hib) and 13-valent pneumococcal conjugate vaccine (PCV13) booster immunization administered 6 months post-chemotherapy, followed by 23-valent pneumococcal polysaccharide vaccination (PPV23) 2 months later. The results will support the development of clinical practice guidelines for this population.

Clinical Trial Description

Rationale and Aims: Children with acute lymphoblastic leukemia (ALL) have evidence of persistent immunosuppression following chemotherapy and may experience waning of immunity to vaccines received prior to treatment. There is no standard of care in Canada regarding immunologic evaluation or booster immunization of children with ALL after chemotherapy. This study aims to identify predictors of low baseline immunity to vaccine antigens in children with ALL and to evaluate the immunogenicity and safety of a standard immunization regimen: DTaP-IPV-Hib and PCV13 booster immunization administered 6 months post-chemotherapy, followed by PPV23. Study Design: This will be a multi-center open-label clinical trial in which children who were diagnosed with ALL at ≥1 year of age, and have not received immunizations other than influenza since completing chemotherapy will undergo immunologic evaluation and serologic testing for pneumococcus, tetanus, pertussis and varicella. They will then be immunized with PCV13, DTaP-IPV-Hib, regardless of immunization history [unless PPV23 was received within the prior 12 months]. Other routine vaccines required as per provincial and centre-specific immunization policies will also be administered. PPV23 will be administered 8 weeks after PCV13. Repeat serologic testing will be conducted at 2 months and 12-15 months after DTaP-IPV-Hib and PCV13 immunization to assess short and long-term immune responses. Adverse events following immunization (AEFI) will be captured through standardized telephone interviews on days 8-10 and 30-33 post-immunization that will capture local and systemic AEFI. ;

Study Design

Related Conditions & MeSH terms

Acute Lymphoblastic Leukemia
Leukemia
Leukemia, Lymphoid
Precursor Cell Lymphoblastic Leukemia-Lymphoma

Clinical Trial Details

NCT number	NCT02447718
Study type	Interventional
Source	Canadian Immunization Research Network
Contact
Status	Completed
Phase	Phase 4
Start date	November 16, 2015
Completion date	March 5, 2018

View Details

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