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Study of ACTR707 in Combination With Rituximab in Subjects With Relapsed or Refractory B Cell Lymphoma

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT03189836
Recruitment Status : Terminated (Business decision)
First Posted : June 16, 2017
Last Update Posted : October 11, 2021
Information provided by (Responsible Party):
Cogent Biosciences, Inc.

Brief Summary:
This is a phase 1, multi-center, single-arm, open-label study evaluating the safety and anti-lymphoma activity of an autologous T cell product (ACTR707) in combination with rituximab in subjects with refractory or relapsed CD20+ B cell lymphoma.

Condition or disease Intervention/treatment Phase
Lymphoma Biological: ACTR707 Biological: rituximab Phase 1

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 26 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Phase 1 Study of ACTR707, an Autologous T Cell Product, in Combination With Rituximab, in Subjects With Relapsed or Refractory CD20+ B Cell Lymphoma
Actual Study Start Date : October 4, 2017
Actual Primary Completion Date : September 21, 2020
Actual Study Completion Date : September 21, 2020

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Lymphoma
Drug Information available for: Rituximab

Arm Intervention/treatment
Experimental: ACTR707 in combination with rituximab Biological: ACTR707
autologous T cell product

Biological: rituximab
CD20-directed cytolytic antibody

Primary Outcome Measures :
  1. Safety as assessed by dose limiting toxicities (DLTs) [ Time Frame: 28 days ]
    Dose-limiting toxicities, MTD, incidence and severity of AEs and clinically significant abnormalities of laboratory values

  2. Determination of maximum tolerated dose and proposed recommended Phase 2 dose [ Time Frame: 24 weeks ]

Secondary Outcome Measures :
  1. Anti-lymphoma activity as measured by overall response rate [ Time Frame: 24 weeks ]
  2. Anti-lymphoma activity as measured by duration of response [ Time Frame: 24 weeks ]
  3. Anti-lymphoma activity as measured by progression-free survival [ Time Frame: 24 weeks ]
  4. Anti-lymphoma activity as measure by overall survival [ Time Frame: 24 weeks ]
  5. Assessment of persistence of ACTR707 as measured by flow cytometry and qPCR [ Time Frame: 24 weeks ]
  6. Assessment of ACTR707 phenotype and function as measured by flow cytometry [ Time Frame: 24 weeks ]
  7. Assessment of inflammatory markers and cytokines/chemokines [ Time Frame: 24 weeks ]
    Cytokines and Inflammatory markers

  8. Rituximab PK [ Time Frame: 24 weeks ]
    Rituximab plasma concentration

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years to 80 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • signed written informed consent obtained prior to study procedures
  • histologically-confirmed relapsed or refractory CD20+ B-cell lymphoma of one of the following types, with documented disease progression or recurrence following the immediate prior therapy: DLBCL (regardless of cell of origin or underlying molecular genetics), MCL, PMBCL, Gr3b-FL, TH-FL (prior dx of FL before transforming to DLBCL).
  • biopsy-confirmed CD20+ expression of the underlying malignancy with disease progression following immediate prior therapy
  • at least 1 measurable lesion on imaging.
  • must have received adequate prior therapy for the underlying CD20+ B-cell lymphoma, defined as an anti-CD20 mAb in combination with an anthracycline-containing chemotherapy regimen (i.e. chemo-immunotherapy) and at least one of the following:

    • biopsy-proven refractory disease after frontline chemo-immunotherapy
    • relapse within 1 year from frontline chemo-immunotherapy and ineligible for autologous hematopoietic stem cell transplant (auto-HSCT)
    • for subjects with DLBCL, PMBCL, and Gr3b-FL: relapsed or refractory disease following at least 2 prior regimens or following an auto-HSCT
    • for subjects with TH-FL: relapsed or refractory disease following at least 2 prior regimens or following an auto-HSCT. At least 1 prior regimen with an anti-CD20 mAb in combination with chemotherapy is required following documented transformation
    • for subjects with MCL (confirmed with cyclin D1 expression or evidence of t(11;14) by cytogenetics, fluorescent in situ hybridization (FISH) or polymerase chain reaction (PCR): relapsed or refractory disease after at least 1 prior regimen with chemo-immunotherapy (prior auto-HSCT is allowable)
  • ECOG 0 or 1
  • life expectancy of at least 6 months
  • platelet count greater than 50,000/µL

Exclusion Criteria:

  • known active central nervous system (CNS) involvement by malignancy.
  • prior treatment as follows:

    • alemtuzumab within 6 months of enrollment
    • fludarabine, cladribine, or clofarabine within 3 months of enrollment
    • external beam radiation within 2 weeks of enrollment
    • mAb (including rituximab) within 2 weeks of enrollment
    • other lymphotoxic chemotherapy (including steroids except as below) within 2 weeks of enrollment
    • experimental agents within 3 half-lives prior to enrollment, unless progression is documented on therapy
  • clinically significant cardiac disease
  • clinically significant active infection
  • clinically significant CNS disorder
  • clinical history, prior diagnosis, or overt evidence of autoimmune disease
  • known bone marrow involvement due to underlying malignant disease, in dose-escalation phase only

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03189836

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United States, Arizona
Banner MD Anderson Cancer Center
Gilbert, Arizona, United States, 85234
United States, Connecticut
Yale University
New Haven, Connecticut, United States, 06520
United States, Georgia
Emory University, Winship Cancer Institute
Atlanta, Georgia, United States, 30322
United States, Illinois
Loyola University
Maywood, Illinois, United States, 60153
United States, Indiana
Indiana Bone and Marrow Transplantation
Indianapolis, Indiana, United States, 46327
United States, Maryland
University of Maryland
Baltimore, Maryland, United States, 21201
United States, Minnesota
University of Minnesota
Minneapolis, Minnesota, United States, 55455
United States, Ohio
Ohio State University
Columbus, Ohio, United States, 43210
United States, Tennessee
Tennessee Oncology - Nashville
Nashville, Tennessee, United States, 37203
United States, Texas
The University of Texas MD Anderson Cancer Center
Houston, Texas, United States, 77030
United States, Wisconsin
Medical College of Wisconsin
Milwaukee, Wisconsin, United States, 53226
Sponsors and Collaborators
Cogent Biosciences, Inc.
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Study Director: Jessica Sachs, MD Cogent Biosciences, Inc.
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
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Responsible Party: Cogent Biosciences, Inc.
ClinicalTrials.gov Identifier: NCT03189836    
Other Study ID Numbers: ATTCK-20-03
First Posted: June 16, 2017    Key Record Dates
Last Update Posted: October 11, 2021
Last Verified: October 2021
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Cogent Biosciences, Inc.:
B cell
T cell
T cell product
adoptive T cells
gene therapy
Additional relevant MeSH terms:
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Neoplasms by Histologic Type
Lymphoproliferative Disorders
Lymphatic Diseases
Immunoproliferative Disorders
Immune System Diseases
Antineoplastic Agents, Immunological
Antineoplastic Agents
Immunologic Factors
Physiological Effects of Drugs
Antirheumatic Agents