Haploidentical Peripheral Blood Stem Cell Transplantation for Acute Leukemia

September 15, 2020 updated by: Xiaojun Huang,MD, Peking University People's Hospital
Allogeneic stem cell transplantation (Allo-HSCT) is the effective and even the only treatment for hematological malignancies. The "GIAC" protocol established by our center has successfully crossed the HLA barrier in HLA-mismatched/haploidentical HSCT. The protocol entails the following: treating donors with granulocyte colony-stimulating factor (G-CSF) to induce donor immune tolerance, intensified immunologic suppression to both promote engraftment and to prevent GVHD, antithymocyte globulin (ATG) was included for the prophylaxis of GVHD and graft rejection, and combination of G-CSF-primed bone marrow harvest (G-BM) and G-CSF-mobilized peripheral blood stem cell harvest (G-PB) as the source of stem cell grafts. But peripheral blood transplantation is still prevalent. Compared with BM, G-PB is more convenient to collect, and the number of T lymphocytes and CD34+ cells is higher. It is reported that G-PB has a higher implantation rate and even a higher disease-free survival rate in sibiling-identical transplantation compared with BM transplantation, whereas there were also reports with different conclusions. This prospective, one-arm clinical cohort study aims to evaluate the safety and efficacy of haplotype peripheral blood stem cell transplantation (PBSCT) in the treatment of acute leukemia.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

Allogeneic stem cell transplantation (Allo-HSCT) is the effective and even the only treatment for hematological malignancies. The "GIAC" protocol established by our center has successfully crossed the HLA barrier in HLA-mismatched/haploidentical HSCT. The protocol entails the following: treating donors with granulocyte colony-stimulating factor (G-CSF) to induce donor immune tolerance, intensified immunologic suppression to both promote engraftment and to prevent GVHD, antithymocyte globulin (ATG) was included for the prophylaxis of GVHD and graft rejection, and combination of G-CSF-primed bone marrow harvest (G-BM) and G-CSF-mobilized peripheral blood stem cell harvest (G-PB) as the source of stem cell grafts. But peripheral blood transplantation is still prevalent. Compared with BM, G-PB is more convenient to collect, and the number of T lymphocytes and CD34+ cells is higher. It is reported that G-PB has a higher implantation rate and even a higher disease-free survival rate in sibiling-identical transplantation compared with BM transplantation, whereas there were also reports with different conclusions. This prospective, one-arm clinical cohort study aims to evaluate the safety and efficacy of haplotype peripheral blood stem cell transplantation (PBSCT) in the treatment of acute leukemia.

Study Type

Observational

Enrollment (Anticipated)

45

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

    • Beijing
      • Beijing, Beijing, China, 100044
        • Recruiting
        • Peking University People's Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

2 years to 60 years (Child, Adult)

Accepts Healthy Volunteers

N/A

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Patients aged 2-60, who plan to receive haplotype PBSCT in the first complete remission phase (CR1) of acute leukemia, and with no uncontrolled current infections or organ failure.

Description

Inclusion Criteria:

  • 2-60 years old, all genders;
  • the first complete remission phase (CR1) of acute leukemia;
  • planning to receive haplotype PBSCT;
  • no uncontrolled current infections (new infections, body temperature still above 38 ℃ after treatment with broad-spectrum antibiotics for 72h, except for other non-infectious factors);
  • no organ failure.

Exclusion Criteria:

  • with poor compliance;
  • with uncontrolled current infections;
  • pregnancy;
  • donors with contraindications of mobilization and collection of peripheral blood stem cells;
  • with mental sickness

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
haplotype PBSCT group
Subjects in this group will receive haplotype peripheral blood stem cell transplantation (PBSCT) of "GIAC" system in the treatment of acute leukemia.
haplotype peripheral blood stem cell transplantation (PBSCT) of "GIAC" system

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
engraftment rate
Time Frame: one year after transplantation
Neutrophil recovery was defined as an absolute neutrophil count(ANC) of 0.5×10^9/L or more for three consecutive days and platelet recovery, as 20×10^9/L or more for seven consecutive days without transfusion.
one year after transplantation

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
cumulative incidence of acute graft-versus-host disease(GVHD)
Time Frame: one year after transplantation
cumulative incidence of acute graft-versus-host disease(GVHD)
one year after transplantation
cumulative incidence of chronic GVHD at one year
Time Frame: one year after transplantation
cumulative incidence of chronic GVHD at one year
one year after transplantation
cumulative incidence of relapse at one year
Time Frame: one year after transplantation
Cumulative incidence of relapse was defined as the cumulative incidences of presence of morphological evidence of disease in samples from peripheral blood, bone marrow, or extramedullary sites, or by the recurrence and sustained presence of pre-transplantation chromosomal abnormalities.
one year after transplantation
cumulative incidence of non-relapse mortality (NRM) at one year
Time Frame: one year after transplantation
NRM was defined as the death without disease progression or relapse.
one year after transplantation
overall survival at one year
Time Frame: one year after transplantation
OS was defined as the time from the date of first dose until death due to any cause.
one year after transplantation

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Investigators

  • Principal Investigator: Xiao-jun Huang, MD, Peking University People's Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

November 1, 2018

Primary Completion (Anticipated)

November 1, 2023

Study Completion (Anticipated)

November 1, 2025

Study Registration Dates

First Submitted

November 27, 2018

First Submitted That Met QC Criteria

November 27, 2018

First Posted (Actual)

November 28, 2018

Study Record Updates

Last Update Posted (Actual)

September 17, 2020

Last Update Submitted That Met QC Criteria

September 15, 2020

Last Verified

September 1, 2020

More Information

Terms related to this study

Other Study ID Numbers

  • Haplo-PBSCT for AL

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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