ClinicalTrials.gg
CompletedNCT00002663Updated Feb 13, 2023Results posted

Biological Therapy in Treating Patients at High-Risk or With Lymphoma, Lymphoproliferative Disease, or Malignancies

A Phase 1/2 interventional study of Epstein-Barr virus-specific cytotoxic T lymphocytes (EBV-CTLs) in EBV-induced Lymphomas, EBV-associated Malignancies and Transplant Patients With EBV Viremia at High Risk of Developing a Recurrent EBV Lymphoma, sponsored by Atara Biotherapeutics. Completed at 1 site in United States. Per ClinicalTrials.gov, last updated 2023-02-13.

Sponsored by Atara Biotherapeutics · Phase 1/2, Interventional, and Treatment

From the registry’s dates

  • Registered 4 years 8 months after the study started (first participant enrolled Mar 1995, registered Nov 1999).
Phase
Phase 1/2
Study type
Interventional
Enrollment
58
Allocation
Non-randomized
Sex
All
01

Study summary

The purpose of this phase I/II trial is to study the side effects and best dose of biological therapy to treat patients at high-risk or with Epstein-Barr virus-associated lymphoma or lymphoproliferative disease.

02

Conditions studied

  • EBV-induced Lymphomas
  • EBV-associated Malignancies
  • Transplant Patients With EBV Viremia at High Risk of Developing a Recurrent EBV Lymphoma

Keywords

  • stage I adult Hodgkin lymphoma
  • stage II adult Hodgkin lymphoma
  • stage III adult Hodgkin lymphoma
  • stage IV adult Hodgkin lymphoma
  • recurrent adult Hodgkin lymphoma
  • stage I cutaneous T-cell non-Hodgkin lymphoma
  • stage II cutaneous T-cell non-Hodgkin lymphoma
  • stage III cutaneous T-cell non-Hodgkin lymphoma
  • stage IV cutaneous T-cell non-Hodgkin lymphoma
  • recurrent cutaneous T-cell non-Hodgkin lymphoma
  • childhood Burkitt lymphoma
  • stage I childhood lymphoblastic lymphoma
  • stage II childhood lymphoblastic lymphoma
  • stage III childhood lymphoblastic lymphoma
  • stage IV childhood lymphoblastic lymphoma
  • recurrent childhood lymphoblastic lymphoma
  • childhood diffuse large cell lymphoma
  • childhood immunoblastic large cell lymphoma
  • stage II childhood Hodgkin lymphoma
  • stage I childhood Hodgkin lymphoma
  • stage III childhood Hodgkin lymphoma
  • stage IV childhood Hodgkin lymphoma
  • recurrent/refractory childhood Hodgkin lymphoma
  • stage I grade 1 follicular lymphoma
  • stage I grade 2 follicular lymphoma
  • stage I grade 3 follicular lymphoma
  • stage I adult diffuse small cleaved cell lymphoma
  • stage I adult diffuse mixed cell lymphoma
  • stage I adult diffuse large cell lymphoma
  • stage I adult immunoblastic large cell lymphoma
  • stage I adult lymphoblastic lymphoma
  • stage I adult Burkitt lymphoma
  • T-cell large granular lymphocyte leukemia
  • stage III grade 1 follicular lymphoma
  • stage III grade 2 follicular lymphoma
  • stage III grade 3 follicular lymphoma
  • stage III adult diffuse small cleaved cell lymphoma
  • stage III adult diffuse mixed cell lymphoma
  • stage III adult diffuse large cell lymphoma
  • stage III adult immunoblastic large cell lymphoma
  • stage III adult lymphoblastic lymphoma
  • stage III adult Burkitt lymphoma
  • stage IV grade 1 follicular lymphoma
  • stage IV grade 2 follicular lymphoma
  • stage IV grade 3 follicular lymphoma
  • stage IV adult diffuse small cleaved cell lymphoma
  • stage IV adult diffuse mixed cell lymphoma
  • stage IV adult diffuse large cell lymphoma
  • stage IV adult immunoblastic large cell lymphoma
  • stage IV adult lymphoblastic lymphoma
  • stage IV adult Burkitt lymphoma
  • recurrent grade 1 follicular lymphoma
  • recurrent grade 2 follicular lymphoma
  • recurrent grade 3 follicular lymphoma
  • recurrent adult diffuse small cleaved cell lymphoma
  • recurrent adult diffuse mixed cell lymphoma
  • recurrent adult diffuse large cell lymphoma
  • recurrent adult immunoblastic large cell lymphoma
  • recurrent adult lymphoblastic lymphoma
  • recurrent adult Burkitt lymphoma
  • stage I adult T-cell leukemia/lymphoma
  • stage II adult T-cell leukemia/lymphoma
  • stage III adult T-cell leukemia/lymphoma
  • stage IV adult T-cell leukemia/lymphoma
  • recurrent adult T-cell leukemia/lymphoma
  • AIDS-related peripheral/systemic lymphoma
  • HIV-associated Hodgkin lymphoma
  • stage I childhood small noncleaved cell lymphoma
  • stage I childhood large cell lymphoma
  • stage II childhood small noncleaved cell lymphoma
  • stage II childhood large cell lymphoma
  • stage III childhood small noncleaved cell lymphoma
  • stage III childhood large cell lymphoma
  • stage IV childhood small noncleaved cell lymphoma
  • stage IV childhood large cell lymphoma
  • recurrent childhood small noncleaved cell lymphoma
  • recurrent childhood large cell lymphoma
  • stage I mantle cell lymphoma
  • contiguous stage II grade 1 follicular lymphoma
  • contiguous stage II grade 2 follicular lymphoma
  • contiguous stage II grade 3 follicular lymphoma
  • contiguous stage II adult diffuse small cleaved cell lymphoma
  • contiguous stage II mantle cell lymphoma
  • contiguous stage II adult diffuse mixed cell lymphoma
  • contiguous stage II adult immunoblastic large cell lymphoma
  • contiguous stage II adult diffuse large cell lymphoma
  • contiguous stage II adult Burkitt lymphoma
  • contiguous stage II adult lymphoblastic lymphoma
  • noncontiguous stage II grade 1 follicular lymphoma
  • noncontiguous stage II grade 2 follicular lymphoma
  • noncontiguous stage II grade 3 follicular lymphoma
  • noncontiguous stage II adult diffuse small cleaved cell lymphoma
  • noncontiguous stage II mantle cell lymphoma
  • noncontiguous stage II adult diffuse mixed cell lymphoma
  • noncontiguous stage II adult immunoblastic large cell lymphoma
  • noncontiguous stage II adult diffuse large cell lymphoma
  • noncontiguous stage II adult Burkitt lymphoma
  • noncontiguous stage II adult lymphoblastic lymphoma
  • stage III mantle cell lymphoma
  • stage IV mantle cell lymphoma
  • recurrent mantle cell lymphoma
  • stage I mycosis fungoides/Sezary syndrome
  • stage II mycosis fungoides/Sezary syndrome
  • stage III mycosis fungoides/Sezary syndrome
  • stage IV mycosis fungoides/Sezary syndrome
  • recurrent mycosis fungoides/Sezary syndrome
  • contiguous stage II small lymphocytic lymphoma
  • contiguous stage II marginal zone lymphoma
  • noncontiguous stage II small lymphocytic lymphoma
  • noncontiguous stage II marginal zone lymphoma
  • extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue
  • nodal marginal zone B-cell lymphoma
  • splenic marginal zone lymphoma
  • recurrent marginal zone lymphoma
  • recurrent small lymphocytic lymphoma
  • stage I marginal zone lymphoma
  • stage I small lymphocytic lymphoma
  • stage III small lymphocytic lymphoma
  • stage III marginal zone lymphoma
  • stage IV small lymphocytic lymphoma
  • stage IV marginal zone lymphoma
  • unspecified adult solid tumor, protocol specific
  • unspecified childhood solid tumor, protocol specific
03

In context

Hodgkin Disease

1,383 studies on the registry are indexed under Hodgkin Disease; 163 are open to participants now.

This study's enrollment of 58 is above the median of 40 across 1,095 interventional studies indexed under Hodgkin Disease.

Browse Hodgkin Disease studies →

Lead sponsor

Atara Biotherapeutics is the lead sponsor of 8 studies on the registry; none are open to participants now.

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

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • documented EBV antigen positive lymphoproliferative disease, lymphoma, or other EBV-associated OR
  • Severely patients who develop blood levels of EBV DNA exceeding 500 copies/ml DNA, and are therefore at high risk for developing an EBV LPD

It is expected that five types of patients afflicted with EBV-associated lymphomas or lymphoproliferative diseases will be referred and will consent to participate in this trial. These are:

  1. Patients developing or at risk for EBV lymphomas or lymphoproliferative disorders following an marrow transplant.
  2. Patients developing or at risk for EBV lymphomas or lymphoproliferative disorders following an allogeneic organ transplant.
  3. Patients with AIDS developing EBV lymphomas or lymphoproliferative diseases as a consequence of the profound acquired immunodeficiency induced by .
  4. Patients who develop EBV lymphomas or lymphoproliferative diseases as a consequence of profound immunodeficiencies associated with a congenital immune deficit or acquired as a sequela of anti-neoplastic or immunosuppressive therapy.
  5. Patients who develop other EBV-associated malignancies without pre-existing immune deficiency, including: EBV+ Hodgkin's and Non- Hodgkin's disease, EBV+ nasopharyngeal carcinoma, EBV+ hemophagocytic lymphohistiocytosis, or EBV+ leiomyosarcoma.

Exclusion criteria

Exclusion Criteria:

The following patients will be excluded from this study:

  • Moribund patients who, by virtue of heart, kidney, liver, lung, or neurologic dysfunction not related to lymphoma, are unlikely to survive the 6-8 weeks required for in vitro generation and expansion of the EBV-specific T cells to be used for therapy and the subsequent 3 weeks required to achieve an initial assessment of the effects of infusions of EBV-specific T cells.
  • Pregnancy does not constitute a to infusions of EBV-specific T cells.
Terms in these criteria, in plain language(6)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Allogeneic and autologous transplant

Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
58 participants (actual)

Study arms

  • Experimental
    EBV+ PTLD-HCT R/R Rituximab (Tab-cel Only)

    Patients with Epstein-Barr virus positive (EBV+) posttransplant lymphoproliferative disorders (PTLD) following hematopoietic cell transplant (HCT) who were relapse/refractory (R/R) to rituximab will receive IV infusion of tabelecleucel (tab-cel) at 1-5 × 10\^6 T-cells/kg on Days 1, 8, and 15 and will be observed for 3 weeks. After the observation period, additional courses (2 courses) may have been provided in the absence of disease progression or unacceptable toxicity.

    Biological: Epstein-Barr virus-specific cytotoxic T lymphocytes (EBV-CTLs)

  • Experimental
    EBV+ PTLD-SOT R/R Rituximab + Chemo (Tab-cel Only)

    Patients with EBV+ PTLD following solid organ transplant (SOT) who were R/R to rituximab and chemotherapy will receive IV infusion of tabelecleucel at 1-5 × 10\^6 T-cells/kg on Days 1, 8, and 15 and will be observed for 3 weeks. After the observation period, additional courses (2 courses) may have been provided in the absence of disease progression or unacceptable toxicity.

    Biological: Epstein-Barr virus-specific cytotoxic T lymphocytes (EBV-CTLs)

  • Experimental
    EBV+ AID-LPD (Tab-cel Only)

    Patients with EBV+ acquired immunodeficiency (AID) lymphoproliferative disorder (LPD) will receive IV infusion of tabelecleucel at 1-5 × 10\^6 T-cells/kg on Days 1, 8, and 15 and will be observed for 3 weeks. After the observation period, additional courses (2 courses) may have been provided in the absence of disease progression or unacceptable toxicity.

    Biological: Epstein-Barr virus-specific cytotoxic T lymphocytes (EBV-CTLs)

  • Experimental
    EBV+ LMS (Tab-cel Only)

    Patients with EBV+ leiomyosarcoma (LMS) will receive IV infusion of tabelecleucel at 1-5 × 10\^6 T-cells/kg on Days 1, 8, and 15 and will be observed for 3 weeks. After the observation period, additional courses (2 courses) may have been provided in the absence of disease progression or unacceptable toxicity.

    Biological: Epstein-Barr virus-specific cytotoxic T lymphocytes (EBV-CTLs)

  • Experimental
    EBV+ NPC (Tab-cel Only)

    Patients with EBV+ nasopharyngeal carcinoma (NPC) will receive IV infusion of tabelecleucel at 1-5 × 10\^6 T-cells/kg on Days 1, 8, and 15 and will be observed for 3 weeks. After the observation period, additional courses (2 courses) may have been provided in the absence of disease progression or unacceptable toxicity.

    Biological: Epstein-Barr virus-specific cytotoxic T lymphocytes (EBV-CTLs)

  • Experimental
    EBV+ PTLD-HCT R/R Rituximab (EBV-CTLs Only)

    Patients with EBV+ following PTLD HCT who were R/R to rituximab or rituximab naive will receive IV infusion of transplant donor-derived EBV-cytotoxic T lymphocytes (CTLs) at 1-5 × 10\^6 T-cells/kg on Days 1, 8, and 15 and will be observed for 3 weeks. After the observation period, additional courses (2 courses) may have been provided in the absence of disease progression or unacceptable toxicity.

    Biological: Epstein-Barr virus-specific cytotoxic T lymphocytes (EBV-CTLs)

  • Experimental
    EBV+ PTLD-SOT R/R Rituximab + Chemo (EBV-CTLs Only)

    Patients with EBV+ PTLD following SOT who were R/R to rituximab and chemotherapy will receive IV infusion of transplant donor-derived EBV-CTLs at 1-5 × 10\^6 T-cells/kg on Days 1, 8, and 15 and will be observed for 3 weeks. After the observation period, additional courses (2 courses) may have been provided in the absence of disease progression or unacceptable toxicity.

    Biological: Epstein-Barr virus-specific cytotoxic T lymphocytes (EBV-CTLs)

  • Experimental
    EBV+ Viremia (EBV-CTLs Only)

    Patients with EBV+ viremia will receive IV infusion of transplant donor-derived EBV-CTLs at 1-5 × 10\^6 T-cells/kg on Days 1, 8, and 15 and will be observed for 3 weeks. After the observation period, additional courses (2 courses) may have been provided in the absence of disease progression or unacceptable toxicity.

    Biological: Epstein-Barr virus-specific cytotoxic T lymphocytes (EBV-CTLs)

  • Experimental
    EBV+ PID-LPD (Tab-cel or EBV-CTLs)

    Patients with EBV+ primary immunodeficiency (PID) LPD will receive IV infusion of tabelecleucel or transplant donor-derived EBV- CTLs at 1-5 × 10\^6 T-cells/kg on Days 1, 8, and 15 and will be observed for 3 weeks. After the observation period, additional courses (2 courses) may have been provided in the absence of disease progression or unacceptable toxicity.

    Biological: Epstein-Barr virus-specific cytotoxic T lymphocytes (EBV-CTLs)

  • Experimental
    EBV+ Lymphoma (Tab-cel or EBV-CTLs)

    Patients with EBV+ lymphoma will receive IV infusion of tabelecleucel or transplant donor-derived EBV-CTLs at 1-5 × 10\^6 T-cells/kg on Days 1, 8, and 15 and will be observed for 3 weeks. After the observation period, additional courses (2 courses) may have been provided in the absence of disease progression or unacceptable toxicity.

    Biological: Epstein-Barr virus-specific cytotoxic T lymphocytes (EBV-CTLs)

Interventions

  • BiologicalEpstein-Barr virus-specific cytotoxic T lymphocytes (EBV-CTLs)

    EBV-CTLs are cytotoxic T lymphocytes that specifically kill cells presenting EBV protein antigens including EBV-transformed B lymphocytes responsible for EBV-associated lymphomas and lymphoproliferative disorders.

    Also known as: tabelecleucel (tab-cel®, ATA129), allogeneic EBV-CTLs, transplant donor-derived EBV-CTLs

06

What researchers measure

Primary outcomes

  1. Objective Response Rate (ORR)

    The ORR is defined as percentage of participants with best overall response of complete remission/response (CR) or partial remission/response (PR) based on investigator's assessment. For participants with clinically and/or radiologically evident EBV LPD or malignancies, CR is complete resolution of all clinical and radiologic evidence of lymphoma, confirmed by biopsy of the affected tissues when indicated, lasting for at least 3 weeks following completion of a cycle of tabelecleucel; and PR is a 50 % or greater reduction in the size of all lymphomatous lesions as determined by computed tomography (CT) or magnetic resonance imaging (MRI) measurements of tumor volume, which was maintained for at least 3 weeks following completion of a cycle of tabelecleucel. For participants without clinically and/or radiologically evident tumors with increasing levels of EBV DNA, CR is clearance of EBV without subsequent development of EBV+ LPD; and PR is at least a 10-fold decrease in EBV DNA levels.

    Time frame: From Day 1 through 251.1 months after Day 1 dose

Secondary outcomes

  1. Overall Survival (OS)

    The OS is defined as the time from the first dose of tabelecleucel or EBV-CTLs to the date of death due to any cause. The OS was estimated using Kaplan-Meier method.

    Time frame: From Day 1 through 251.1 months after Day 1 dose

  2. OS Rate at 12 Months

    Percentage of participants with OS at 12 months are reported. The OS is defined as the time from the first dose of tabelecleucel or EBV-CTLs to the date of death due to any cause. The OS was estimated using Kaplan-Meier method.

    Time frame: From Day 1 through 12 months after Day 1 dose

  3. OS Follow-up Time

    The OS at follow-up time are reported. The OS is defined as the time from the first dose of tabelecleucel or EBV-CTLs to the date of death due to any cause. The OS was estimated using Kaplan-Meier method.

    Time frame: From Day 1 through 251.1 months after Day 1 dose

  4. Time to Response (TTR)

    The TTR was defined as the time from the date of the first dose of tabelecleucel or EBV-CTLs to the date of a PR or CR, whichever occurred first. For participants with clinically and/or radiologically evident EBV LPD or malignancies, CR was defined as complete resolution of all clinical and radiologic evidence of lymphoma, confirmed by biopsy of the affected tissues when indicated, lasting for at least 3 weeks following completion of a cycle of tabelecleucel or EBV-CTLs; and a PR was defined as a 50 % or greater reduction in the size of all lymphomatous lesions as determined by CT or MRI scan measurements of tumor volume, which was maintained for at least 3 weeks following completion of a cycle of tabelecleucel or EBV-CTLs. For participants without clinically and/or radiologically evident tumors with increasing levels of EBV DNA, CR was defined as clearance of EBV without subsequent development of EBV+ LPD; and PR was defined as at least a 10-fold decrease in EBV DNA levels.

    Time frame: From Day 1 through 251.1 months after Day 1 dose

  5. Clinical Benefit Rate (CBR)

    The CBR was the proportion of participants who have achieved a CR, PR or SD assessed at least 28 days after first dose date of study drug. For participants with clinically and/or radiologically evident EBV LPD or malignancies, CR as complete resolution of all clinical and radiologic evidence of lymphoma, confirmed by biopsy of affected tissues when indicated, lasting for at least 3 weeks following completion of a cycle of tabelecleucel or EBVCTLs; and a PR as a \>= 50% reduction in size of all lymphomatous lesions as determined by CT or MRI scan measurements of tumor volume, maintained for at least 3 weeks following completion of a cycle of tabelecleucel or EBV-CTLs. For participants without clinically and/or radiologically evident tumors with increasing levels of EBV DNA, CR as clearance of EBV without subsequent development of EBV+ LPD; and PR as at least a 10-fold decrease in EBV DNA levels. The CBR was included specifically as clinically meaningful for solid tumor, namely LMS.

    Time frame: From Day 1 through 251.1 months after Day 1 dose

07

Results

Posted Feb 13, 2023
Limitations and caveats
In this investigator-led study, scans were only collected as clinically indicated in lieu of a defined schedule; therefore, disease assessment endpoints (duration of response, durable response rate, progression-free survival, time to progression) may not be reliable, hence not reported. Study 95-024 was designed for patient treatment and conducted mostly as investigator-sponsored, single-center until Atara assumed responsibility, then relevant data was transferred from the investigator to Atara.

Participant flow

Participant flow — Overall Study
MilestoneEBV+ PTLD-HCT R/R Rituximab (Tab-cel Only)EBV+ PTLD-SOT R/R Rituximab + Chemo (Tab-cel Only)EBV+ AID-LPD (Tab-cel Only)EBV+ LMS (Tab-cel Only)EBV+ NPC (Tab-cel Only)EBV+ PTLD-HCT R/R Rituximab (EBV-CTLs Only)EBV+ PTLD-SOT R/R Rituximab + Chemo (EBV-CTLs Only)EBV+ Viremia (EBV-CTLs Only)EBV+PID-LPD (Tab-cel or EBV-CTLs Only)EBV+ Lymphoma (Tab-cel or EBV-CTLs Only)
Started114251232622
Completed4213081400
Not completed72121151222
Withdrew: Death41100130111
Withdrew: Lost to follow-up3001010000
Withdrew: Other0100011000
Withdrew: Physician decision0000100011
Withdrew: Adverse event0001000100

Outcome measures

PrimaryObjective Response Rate (ORR)

The ORR is defined as percentage of participants with best overall response of complete remission/response (CR) or partial remission/response (PR) based on investigator's assessment. For participants with clinically and/or radiologically evident EBV LPD or malignancies, CR is complete resolution of all clinical and radiologic evidence of lymphoma, confirmed by biopsy of the affected tissues when indicated, lasting for at least 3 weeks following completion of a cycle of tabelecleucel; and PR is a 50 % or greater reduction in the size of all lymphomatous lesions as determined by computed tomography (CT) or magnetic resonance imaging (MRI) measurements of tumor volume, which was maintained for at least 3 weeks following completion of a cycle of tabelecleucel. For participants without clinically and/or radiologically evident tumors with increasing levels of EBV DNA, CR is clearance of EBV without subsequent development of EBV+ LPD; and PR is at least a 10-fold decrease in EBV DNA levels.

Time frame:
From Day 1 through 251.1 months after Day 1 dose
Reported as:
Number · Percentage of participants
Objective Response Rate (ORR)
Percentage of participantsEBV+ PTLD-HCT R/R Rituximab (Tab-cel Only)EBV+ PTLD-SOT R/R Rituximab + Chemo (Tab-cel Only)EBV+ LMS (Tab-cel Only)EBV+ PTLD-HCT R/R Rituximab (EBV-CTLs Only)EBV+ Viremia (EBV-CTLs Only)
Objective Response Rate (ORR)63.6 (30.8 to 89.1)50.0 (6.8 to 93.2)0 (0 to 52.2)43.5 (23.2 to 65.5)57.1 (18.4 to 90.1)
SecondaryOverall Survival (OS)

The OS is defined as the time from the first dose of tabelecleucel or EBV-CTLs to the date of death due to any cause. The OS was estimated using Kaplan-Meier method.

Time frame:
From Day 1 through 251.1 months after Day 1 dose
Reported as:
Median · Months
Overall Survival (OS)
MonthsEBV+ PTLD-HCT R/R Rituximab (Tab-cel Only)EBV+ PTLD-SOT R/R Rituximab + Chemo (Tab-cel Only)EBV+ LMS (Tab-cel Only)EBV+ PTLD-HCT R/R Rituximab (EBV-CTLs Only)EBV+ Viremia (EBV-CTLs Only)
Overall Survival (OS)14.8 (0.9 to NA)84.8 (1.1 to 115.0)NA (60.6 to NA)18.6 (1.5 to NA)NA (2.5 to NA)
SecondaryOS Rate at 12 Months

Percentage of participants with OS at 12 months are reported. The OS is defined as the time from the first dose of tabelecleucel or EBV-CTLs to the date of death due to any cause. The OS was estimated using Kaplan-Meier method.

Time frame:
From Day 1 through 12 months after Day 1 dose
Reported as:
Number · Percentage of participants
OS Rate at 12 Months
Percentage of participantsEBV+ PTLD-HCT R/R Rituximab (Tab-cel Only)EBV+ PTLD-SOT R/R Rituximab + Chemo (Tab-cel Only)EBV+ LMS (Tab-cel Only)EBV+ PTLD-HCT R/R Rituximab (EBV-CTLs Only)EBV+ Viremia (EBV-CTLs Only)
OS Rate at 12 Months54.5 (22.9 to 78.0)75.0 (12.8 to 96.1)100.0 (100 to 100)52.2 (30.5 to 70.0)85.7 (33.4 to 97.9)
SecondaryOS Follow-up Time

The OS at follow-up time are reported. The OS is defined as the time from the first dose of tabelecleucel or EBV-CTLs to the date of death due to any cause. The OS was estimated using Kaplan-Meier method.

Time frame:
From Day 1 through 251.1 months after Day 1 dose
Reported as:
Median · Months
OS Follow-up Time
MonthsEBV+ PTLD-HCT R/R Rituximab (Tab-cel Only)EBV+ PTLD-SOT R/R Rituximab + Chemo (Tab-cel Only)EBV+ LMS (Tab-cel Only)EBV+ PTLD-HCT R/R Rituximab (EBV-CTLs Only)EBV+ Viremia (EBV-CTLs Only)
OS Follow-up Time14.82 (0.5 to 88.9)63.56 (1.1 to 115.0)77.40 (29.5 to 109.3)18.63 (0.2 to 251.1)62.98 (2.5 to 91.3)
SecondaryTime to Response (TTR)

The TTR was defined as the time from the date of the first dose of tabelecleucel or EBV-CTLs to the date of a PR or CR, whichever occurred first. For participants with clinically and/or radiologically evident EBV LPD or malignancies, CR was defined as complete resolution of all clinical and radiologic evidence of lymphoma, confirmed by biopsy of the affected tissues when indicated, lasting for at least 3 weeks following completion of a cycle of tabelecleucel or EBV-CTLs; and a PR was defined as a 50 % or greater reduction in the size of all lymphomatous lesions as determined by CT or MRI scan measurements of tumor volume, which was maintained for at least 3 weeks following completion of a cycle of tabelecleucel or EBV-CTLs. For participants without clinically and/or radiologically evident tumors with increasing levels of EBV DNA, CR was defined as clearance of EBV without subsequent development of EBV+ LPD; and PR was defined as at least a 10-fold decrease in EBV DNA levels.

Time frame:
From Day 1 through 251.1 months after Day 1 dose
Reported as:
Median · Months
Time to Response (TTR)
MonthsEBV+ PTLD-HCT R/R Rituximab (Tab-cel Only)EBV+ PTLD-SOT R/R Rituximab + Chemo (Tab-cel Only)EBV+ LMS (Tab-cel Only)EBV+ PTLD-HCT R/R Rituximab (EBV-CTLs Only)EBV+ Viremia (EBV-CTLs Only)
Time to Response (TTR)1.18 (0.8 to 2.4)6.74 (3.1 to 10.4)—1.45 (0.6 to 5.1)1.22 (1.1 to 1.4)
SecondaryClinical Benefit Rate (CBR)

The CBR was the proportion of participants who have achieved a CR, PR or SD assessed at least 28 days after first dose date of study drug. For participants with clinically and/or radiologically evident EBV LPD or malignancies, CR as complete resolution of all clinical and radiologic evidence of lymphoma, confirmed by biopsy of affected tissues when indicated, lasting for at least 3 weeks following completion of a cycle of tabelecleucel or EBVCTLs; and a PR as a \>= 50% reduction in size of all lymphomatous lesions as determined by CT or MRI scan measurements of tumor volume, maintained for at least 3 weeks following completion of a cycle of tabelecleucel or EBV-CTLs. For participants without clinically and/or radiologically evident tumors with increasing levels of EBV DNA, CR as clearance of EBV without subsequent development of EBV+ LPD; and PR as at least a 10-fold decrease in EBV DNA levels. The CBR was included specifically as clinically meaningful for solid tumor, namely LMS.

Time frame:
From Day 1 through 251.1 months after Day 1 dose
Reported as:
Number · Percentage of participants
Clinical Benefit Rate (CBR)
Percentage of participantsEBV+ PTLD-HCT R/R Rituximab (Tab-cel Only)EBV+ PTLD-SOT R/R Rituximab + Chemo (Tab-cel Only)EBV+ LMS (Tab-cel Only)EBV+ PTLD-HCT R/R Rituximab (EBV-CTLs Only)EBV+ Viremia (EBV-CTLs Only)
Clinical Benefit Rate (CBR)63.6 (30.8 to 89.1)75.0 (19.4 to 99.4)80.0 (28.4 to 99.5)47.8 (26.8 to 69.4)71.4 (29.0 to 96.3)

Adverse events

Collected over From Day 1 through 251.1 months after Day 1 dose. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Overall Total32/58 (55.2%)40/58 (69%)—
Most frequent serious events
Showing 10 of 77
Most frequent serious events
EventOverall Total
PyrexiaGeneral disorders13/58
Device related infectionInfections and infestations8/58
HypoxiaRespiratory, thoracic and mediastinal disorders5/58
InfectionInfections and infestations4/58
Febrile neutropeniaBlood and lymphatic system disorders3/58
Abdominal painGastrointestinal disorders3/58
Disease progressionGeneral disorders3/58
Neutropenic infectionInfections and infestations3/58
DehydrationMetabolism and nutrition disorders3/58
SeizureNervous system disorders3/58

Baseline characteristics

Full analysis set included all participants who received at least one dose of study treatment (tabelecleucel or EBV-CTLs). Results from arms with \<= 3 participants (as shown in the participant flow) are being excluded due to the low numbers of participants; these low numbers pose a risk for participant re-identification in these rare indications of this single center study.

Age, Customized
Age, Customized(Participants)EBV+ PTLD-HCT R/R Rituximab (Tab-cel Only)EBV+ PTLD-SOT R/R Rituximab + Chemo (Tab-cel Only)EBV+ LMS (Tab-cel Only)EBV+ PTLD-HCT R/R Rituximab (EBV-CTLs Only)EBV+ Viremia (EBV-CTLs Only)Total
<18 years7348325
=>18 years41115425
Sex: Female, Male
Sex: Female, Male(Participants)EBV+ PTLD-HCT R/R Rituximab (Tab-cel Only)EBV+ PTLD-SOT R/R Rituximab + Chemo (Tab-cel Only)EBV+ LMS (Tab-cel Only)EBV+ PTLD-HCT R/R Rituximab (EBV-CTLs Only)EBV+ Viremia (EBV-CTLs Only)Total
Female7127219
Male43316531
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)EBV+ PTLD-HCT R/R Rituximab (Tab-cel Only)EBV+ PTLD-SOT R/R Rituximab + Chemo (Tab-cel Only)EBV+ LMS (Tab-cel Only)EBV+ PTLD-HCT R/R Rituximab (EBV-CTLs Only)EBV+ Viremia (EBV-CTLs Only)Total
Hispanic or Latino002215
Not Hispanic or Latino110417
Unknown or Not Reported103317538
Race (NIH/OMB)
Race (NIH/OMB)(Participants)EBV+ PTLD-HCT R/R Rituximab (Tab-cel Only)EBV+ PTLD-SOT R/R Rituximab + Chemo (Tab-cel Only)EBV+ LMS (Tab-cel Only)EBV+ PTLD-HCT R/R Rituximab (EBV-CTLs Only)EBV+ Viremia (EBV-CTLs Only)Total
American Indian or Alaska Native000000
Asian210115
Native Hawaiian or Other Pacific Islander000000
Black or African American111216
White61318533
More than one race000000
Unknown or Not Reported211206
08

Study locations

1 site
  • Memorial Sloan Kettering Cancer Center
    New York, New York 10065, United States
09

References and documents

Publications

  • Prockop S, Doubrovina E, Suser S, Heller G, Barker J, Dahi P, Perales MA, Papadopoulos E, Sauter C, Castro-Malaspina H, Boulad F, Curran KJ, Giralt S, Gyurkocza B, Hsu KC, Jakubowski A, Hanash AM, Kernan NA, Kobos R, Koehne G, Landau H, Ponce D, Spitzer B, Young JW, Behr G, Dunphy M, Haque S, Teruya-Feldstein J, Arcila M, Moung C, Hsu S, Hasan A, O'Reilly RJ. Off-the-shelf EBV-specific T cell immunotherapy for rituximab-refractory EBV-associated lymphoma following transplantation. J Clin Invest. 2020 Feb 3;130(2):733-747. doi: 10.1172/JCI121127. PubMed 31689242 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 13, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT00002663
Lead sponsor
Atara Biotherapeutics
Responsible party
Sponsor
First posted
Jan 27, 2003
Start date
Mar 1995
Primary completion
Jul 2019
Completion
Jul 2019
Results posted
Feb 13, 2023
Last update
Feb 13, 2023

Study contacts

Minoti Hiremath, MD
study director · Atara Biotherapeutics
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jan 2023. You cannot join it, but the record below documents what was studied.

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