Monitoring Minimal Residual Disease MRD in Pediatric B-acute Lymphoblastic Leukemia

  • STATUS
    Recruiting
  • End date
    Jan 30, 2026
  • participants needed
    255
  • sponsor
    Sun Yat-sen University
Updated on 4 August 2021

Summary

This study aimed to investigate the performance of next-generation sequencing (NGS) techniques measuring immunoglobulin heavy chain (IgH)-variable, diversity, and joining (V[D]J) clonal rearrangements IgH-V[D]J NGS compared with flow cytometry (FCM) in detecting of minimal residual disease (MRD) for children with acute lymphoblastic leukemia treated with South Chinese Children Leukemia Group (SCCLG)-ALL 2016, and to predict the relapse of the disease in the early stage and to assess the prognosis, so as to provide the basis for early intervention treatment and reduce the hematological relapse and improve the survival rate.

Description

The measurement of residual leukemia levels, "minimal residual disease" (MRD), during therapy has now emerged as the most important predictor the outcome in acute lymphoblastic leukemia (ALL). As a result, risk-classifications based on MRD assessment has become an essential part of determining disease risk and directing therapeutic approach for children and adults with ALL.

Recently, next-generation sequencing (NGS) techniques measuring immunoglobulin (Ig) or T-cell receptor (TCR) clonal rearrangements as a method of detecting MRD have been introduced. These approaches expand the sensitivity of MRD detection to as high as 1 in 10,000,000 cells and have been shown to be predictive of relapse in children with ALL receiving standard chemotherapy.

In this study, the investigators will determine the sensitivity and specificity of IgH-V(D)J NGS and compared its capacity to measure MRD with that of flow cytometry using diagnostic and follow-up samples from more than 100 patients with ALL. Patients under age of 18 years with newly diagnosed ALL will be recruited and receive the treatment strategy of (SCCLG)-ALL 2016. After identifying a trackable clone in diagnostic samples (Baseline), MRD was measured using IgH-V(D)J NGS and FCM on bone marrow at 3 time-points: fifteen days after induction therapy (D15), thirty-three days after induction therapy (D33) and then at the end of induction therapy. Event-free survival (EFS), Relapse-free survival (RFS) and overall survival (OS) were assessed.

Details
Condition B Acute Lymphoblastic Leukemia, B-cell Acute Lymphoblastic Leukemia, pro b
Treatment Minimal residual disease (MRD) monitoring
Clinical Study IdentifierNCT04977895
SponsorSun Yat-sen University
Last Modified on4 August 2021

Eligibility

Yes No Not Sure

Inclusion Criteria

Age18 years
Newly diagnosed B-ALL
No previous treatment
Signed informed consent in keeping with the policies of the hospital

Exclusion Criteria

History of other malignancies, except in situ carcinoma or malignancy treated with curative intent
Patients with active or uncontrollable infections such as hepatitis B, hepatitis C or HIV infection
Patients with uncontrolled autoimmune diseases or immune defects. Other protocol-defined Inclusion/Exclusion may apply
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