CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 89 enrolled
Drug / intervention
Observational only: Serology and flow cytometry for ALL cohort participants +1 moreother
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT05622682
NCT05622682N/ACompleted

A Prospective Cohort Study to Define Infectious Burden, the Seroprevalence of Vaccine Preventable Pathogens and Immune Recovery in the First Year Following Completion of Therapy in Patients With Acute Lymphoblastic Leukemia (ALL)

Children's Hospital of Philadelphia·observational·Posted Nov 18, 2022·Updated Jan 26, 2026

In Brief

An observational study evaluating Observational only: Serology and flow cytometry for ALL cohort participants and Observational only: Infection rates for Acute Lymphoblastic Leukemia, Pediatric. Completed, enrolled 89 participants across 6 sites.

Detailed Summary

This observational study aims to assess recovery of the immune system and immunity to vaccine-preventable diseases in children, adolescents, and young adults who recently completed treatment for acute lymphoblastic leukemia (ALL). Several children's hospitals in the United States are participating in the study, which will enroll up to 100 pediatric participants. The study is intended to determine the rate of infection after leukemia treatment and to inform future studies and recommendations about whether children and adolescents who have leukemia should receive additional vaccine doses or boosters after treatment.

Study Details

Study Typeobservational
Allocation--
Masking--
Primary Purpose--
CountriesUnited States

Timeline

N/ACompletedFinished
2023202420252026
First PostedNov 18, 2022
Enrollment StartSep 28, 2022
Primary CompletionOct 31, 2025
Study CompletionNov 30, 2025
TodayJul 2, 2026
Enrollment to primary: 3.1 yearsPosted 3.6 years ago

Interventions

Observational only: Serology and flow cytometry for ALL cohort participantsother

Blood samples from ALL cohort participants will be tested to measure antibodies to vaccine-preventable diseases and immune recovery

Observational only: Infection ratesother

Number of infections during the study period will be obtained and infection incidence rates calculated during the first year off-chemotherapy.