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Response to Influenza Vaccination in Pediatric Oncology Patients

RecruitingObservational study

Who can join

Up to age 18 · All sexes

Full eligibility criteria
Inclusion Criteria:

* Patient ≤ 18 years old at the time of consent receiving care at St. Jude Children's Research Hospital
* Diagnosed with a hematological malignancy
* Eligible to receive the current seasonal influenza vaccine

Exclusion Criteria:

• Previously received at least one dose of the current seasonal influenza vaccine.

About the study

Influenza infection occurring during oncologic treatment or following hematopoietic cell transplantation (HCT) is associated with increased risk of morbidity in the form of lower respiratory tract infection (LRTI) and mortality relative to otherwise healthy patients. The study participants have been diagnosed with a hematological malignancy and are eligible to receive the current seasonal influenza (Flu) vaccine.

Primary Objective

* To determine the feasibility of opening a longitudinal prospective study of IIV immunogenicity in pediatric leukemia patients. * To describe the immunogenicity, as measured by the development of cell- and/or antibody-mediated influenza specific responses 3 to 5 weeks following vaccination, in a cohort of pediatric leukemia patients.

Secondary Objectives

* To describe whether an immune response, as measured by development of cell- and/or antibody-mediated influenza specific responses, is detectable 1-2 weeks following vaccination in a cohort of pediatric leukemia patients. * To describe the durability of immunogenicity by measuring cell - and antibody- mediated influenza specific responses at 6 months and 1 year following vaccination in a cohort of pediatric leukemia patients.

Exploratory Objectives

* To estimate the clinical effectiveness of influenza vaccine in this cohort by monitoring for the development of clinical diagnosis of influenza in the cohort of enrolled pediatric oncology patients. * To correlate results of immune cell frequency in blood, as measured by complete blood count with differential, with development of an immune response to IIV.

Sponsor: St. Jude Children's Research Hospital · Participants: 150 · Started: Oct 7, 2022

Contact the study team

Official record on ClinicalTrials.gov — NCT05384288

Locations in the U.S.

TennesseeSt. Jude Children's Research Hospital, Memphis

Conditions

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.