Study of the Impact of CD34+ Cell Dose on Absolute Lymphocyte Count Following High-Dose Therapy and Autologous Stem Cell Transplantation for Relapsed and Refractory Diffuse Large B-cell Lymphoma (DLBCL)

November 24, 2025 updated by: Memorial Sloan Kettering Cancer Center

A Multi-center Randomized Phase II Study of the Impact of CD34+ Cell Dose on Absolute Lymphocyte Count Following High-Dose Therapy and Autologous Stem Cell Transplantation for Relapsed and Refractory Diffuse Large B-cell Lymphoma (DLBCL)

The purpose of this study is to study the impact of stem cell dose on outcome after autologous transplant.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Following enrollment, patients will be CD34+ stem cell mobilized at the discretion of the treating attending physician with the plerixafor for the achievement of >6 x10^6 CD34+ cells/kg. The patients that fail to mobilize >6 x10^6 CD34+ cells/kg will not be randomized and will subsequently be followed for disease progression and overall survival.. Patients with >6 x10^6 CD34+ cells/kg cryopreserved on study will be admitted to the hospital for planned ASCT. Patients will be randomly infused with either 3-4 x 10^6 CD34+ stem cells/kg or 6-8 x10^6 CD34+ stem cells/kg on d0 per study randomization. The cell dose ranges within the two groups allows variability within aliquots of cells at the time of cryopreservation. Patients will receive standard supportive measures (including: growth factor support post-HDT/ASCT, antimicrobial prophylaxis, red blood cell and platelet transfusion and treatment for neutropenic fever) as per institutional guideline practices.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
59

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

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

Study Locations

  • United States
    • Nebraska
      • Omaha, Nebraska, United States, 68198-7680
        • University of Nebraska Medical Center
    • New Jersey
      • Basking Ridge, New Jersey, United States
        • Memorial Sloan Kettering Basking Ridge (Consent and follow-up only)
      • Middletown, New Jersey, United States, 07748
        • Memorial Sloan Kettering Monmouth (Consent and Follow up Only)
      • Montvale, New Jersey, United States, 07645
        • Memorial Sloan Kettering Bergen (Consent and Follow Up Only)
    • New York
      • Commack, New York, United States, 11725
        • Memorial Sloan Kettering Commack (Consent and follow-up only)
      • Harrison, New York, United States, 10604
        • Memorial Sloan Kettering Westchester
      • Manhasset, New York, United States, 11030
        • Northwell Health (Data collection only)
      • New York, New York, United States, 10065
        • Memorial Sloan Kettering Cancer Center
      • New York, New York, United States
        • Columbia University
      • Rochester, New York, United States, 14642
        • University of Rochester Medical Center
      • Uniondale, New York, United States, 11553
        • Memorial Sloan Kettering Nassau (Consent and Follow up Only)
    • Tennessee
      • Nashville, Tennessee, United States, 37203
        • Tennessee Oncology
    • Texas
      • San Antonio, Texas, United States, 78229
        • Texas Transplant Institute
    • Wisconsin
      • Milwaukee, Wisconsin, United States, 53226
        • Medical College of Wisconsin

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Age ≥ 18 years old
  • Diagnosed with relapsed or refractory de novo DLBCL or follicular lymphoma transformed to DLBCL to one previous line of anthracycline-containing chemotherapy
  • KPS ≥ 70
  • Complete or partial response by IWG Working Group or ICML Criteria to maximum of one salvage line of chemotherapy without pre-HDT/ASCT salvage radiotherapy.

  • Eligible for high-dose therapy and autologous stem-cell rescue

    • Serum creatinine ≤ 1.5 mg/dL, or if creatinine >1.5 mg/dL, calculated creatinine clearance of ≥50 mL/min by 24 hour creatinine clearance or CKD-EPI.
    • Last cycle of most recent salvage therapy within 8 weeks of enrollment

  • Total bilirubin < 2.0 mg/dL

    o If Gilbert"s disease is suspected and total bilirubin > 2.0 mg/dL, direct bilirubin must be < 2.0 mg/dL

  • Females of childbearing potential and males must agree to use an acceptable form of contraception per institutional practices.

Exclusion Criteria:

  • Disease progression by IWG Working Group or ICML Criteria since last therapy
  • Prior autologous or allogeneic stem cell transplantation
  • HIV infection
  • Comorbid condition(s) which, in the opinion of the attending physician and/or MSKCC Principal Investigator, will preclude stem cell mobilization and/or high-dose therapy with autologous stem cell rescue
  • Treatment plan that includes post-transplant maintenance therapy
  • Salvage therapy that includes involved field radiotherapy

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

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: 3-4 x 10^6 CD34+ stem cells/kg
Patients will receive standard supportive measures (including: growth factor support post-HDT/ASCT, antimicrobial prophylaxis, red blood cell and platelet transfusion and treatment for neutropenic fever) as per institutional guideline practices.
Procedure: leukapheresis
Drug: Plerixafor
Following enrollment, patients will be CD34+ stem cell mobilized at the discretion of the treating attending physician with the plerixafor for a maximum of 4 apheresis days, for the achievement of ≥ 7 x106 CD34+ cells/kg.
Drug: carmustine, etoposide, cytarabine, melphalan
Carmustine 300 mg/m2 day -6 Etoposide 100 mg/m2 q12hrs x 8 doses day - 5 thru day -2 Cytarabine 100 mg/m2 q12hrs x 8 doses day - 5 thru day -2 Melphalan 140 mg/m2 day -1 BEAM dosages may be adjusted per institutional dose adjustments based on body weight.
Other Names:
  • BEAM chemotherapy
Procedure: Autologous Stem Cell Transplantation
Experimental: 6-8 x10^6 CD34+ stem cells/kg
Patients will receive standard supportive measures (including: growth factor support post-HDT/ASCT, antimicrobial prophylaxis, red blood cell and platelet transfusion and treatment for neutropenic fever) as per institutional guideline practices.
Procedure: leukapheresis
Drug: Plerixafor
Following enrollment, patients will be CD34+ stem cell mobilized at the discretion of the treating attending physician with the plerixafor for a maximum of 4 apheresis days, for the achievement of ≥ 7 x106 CD34+ cells/kg.
Drug: carmustine, etoposide, cytarabine, melphalan
Carmustine 300 mg/m2 day -6 Etoposide 100 mg/m2 q12hrs x 8 doses day - 5 thru day -2 Cytarabine 100 mg/m2 q12hrs x 8 doses day - 5 thru day -2 Melphalan 140 mg/m2 day -1 BEAM dosages may be adjusted per institutional dose adjustments based on body weight.
Other Names:
  • BEAM chemotherapy
Procedure: Autologous Stem Cell Transplantation

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
progression-free survival (PFS)
Time Frame: at +/- 2 weeks
equals date of progression/death - date of Autologous Stem Cell Transplantation
at +/- 2 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
the impact of CD34+ cell dose on lymphocyte subset recovery
Time Frame: day 15
(ALC15) post HDT-ASCT Accordingly, each subject will be classified as a responder (i.e., recovery) or non-responder.
day 15

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Memorial Sloan Kettering Cancer Center

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Sanofi
Columbia University
Medical College of Wisconsin
University of Rochester
University of Nebraska
University Hospitals Seidman Cancer Center
Endeavor Health

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Sergio Giralt, MD, Memorial Sloan Kettering Cancer Center

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.

Helpful Links

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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 1, 2015

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 1, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 1, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 5, 2015

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 5, 2015

First Posted (Estimated)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 7, 2015

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 26, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 24, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 15-193

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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