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RecruitingNCT05809284CARPERSUpdated Aug 7, 2026

Determining the Mechanisms of Loss of CAR T Cell Persistence

An observational study in Acute Lymphoblastic Leukemia With Failed Remission, Acute Lymphoblastic Leukemia Not Having Achieved Remission and Acute Lymphoblastic Leukemia, Pediatric, sponsored by University College, London. Recruiting at 3 sites in United Kingdom. Open to participants aged Up to 25 Years. Per ClinicalTrials.gov, last updated 2026-08-07.

Sponsored by University College, London · Observational

From the registry’s dates

  • Started Oct 2023; still recruiting 2 years 11 months later.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
50
Ages
Up to 25 Years
Sex
All
01

Study summary

A prospective observational study of pediatric and young adult acute lymphoblastic leukaemia (ALL) patients treated with CD19 chimeric antigen receptor T-cells (CAR-T cells). The study will examine changes in CAR-T persistence over time and causal factors.

02

Conditions studied

  • Acute Lymphoblastic Leukemia With Failed Remission
  • Acute Lymphoblastic Leukemia Not Having Achieved Remission
  • Acute Lymphoblastic Leukemia, Pediatric
  • Acute Lymphoblastic Leukemia, Adult
  • Acute Lymphoblastic Leukemia, in Relapse
03

In context

Precursor Cell Lymphoblastic Leukemia-Lymphoma

2,061 studies on the registry are indexed under Precursor Cell Lymphoblastic Leukemia-Lymphoma; 490 are open to participants now.

This study's planned enrollment of 50 is below the median of 120 across 300 observational studies indexed under Precursor Cell Lymphoblastic Leukemia-Lymphoma.

Browse Precursor Cell Lymphoblastic Leukemia-Lymphoma studies →

Lead sponsor

University College, London is the lead sponsor of 632 studies on the registry; 145 are open to participants now.

Of its 6 completed or terminated interventional studies of FDA-regulated products, 2 (33%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Up to 25 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

The study population is paediatric and young adult patients aged 25 or younger who have relapsed/refractory B-cell acute lymphoblastic leukaemia.

Inclusion criteria

  1. Children and young adults (age 25 years or younger) with relapsed/refractory ALL who are planned to receive licensed CD19-targeted CAR-T cell treatment (Tisagenlecleucel)
  2. Written informed consent

Exclusion criteria

Exclusion Criteria:

  1. Patients receiving an alternate CD19-directed CAR T-cell product on a clinical trial
  2. Any reason that in the opinion of the investigator, patients won't be able to adhere to the protocol
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
50 participants (estimated)
Patient registry
No
Biospecimen retention
Samples with dna
06

What researchers measure

Primary outcomes

  1. Time to circulating CAR-T cell loss

    CAR-T persistence will be measured in the central lab from blood samples.

    Time frame: Through study completion, until the last patient reaches 1 year post-infusion

07

Study locations

3 of 3 sites recruiting
  • Great Ormond Street Hospital
    London, United Kingdom
    • Persis Amrolia · Contact
    • Persis Amrolia · Principal investigator
    Recruiting
  • University College London Hospital
    London, United Kingdom
    • Rachael Hough · Contact
    • Rachael Hough · Principal investigator
    Recruiting
  • Royal Manchester Children's Hospital
    Manchester, United Kingdom
    • Denise Bonney · Contact
    • Denise Bonney · Principal investigator
    Recruiting
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 7, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05809284
Lead sponsor
University College, London
Responsible party
Sponsor
First posted
Apr 12, 2023
Start date
Oct 18, 2023
Primary completion
Jul 1, 2027 (estimated)
Completion
Jul 1, 2027 (estimated)
Last update
Aug 7, 2026

Study contacts

CARPERS Trial Manager
Contact
ctc.carpers@ucl.ac.uk
442031084189
Persis Amrolia, BSc,MBBS,PhD
study chair · UCL Institute of Child Health

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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