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A Phase 1/2 Study of bbT369, a Dual Targeting CAR T Cell Drug Product With a Gene Edit, in Relapsed and/or Refractory B Cell Non-Hodgkin's Lymphoma (NHL)


Description

A Phase 1/2 Study of bbT369, a dual targeting CAR T cell drug product with a gene edit, in Relapsed and/or Refractory B cell Non-Hodgkin's Lymphoma.This is a non-randomized, open label, multi-site Phase 1/2 study. This first-in-human Phase 1/2 Study CRC-403 will evaluate the safety and efficacy of bbT369 in subjects with relapsed and/or refractory B cell non-Hodgkin's lymphoma (NHL). Phase 1 will be a dose escalation, up to a planned four dose levels. After establishing MTD, Phase 2 will enroll subjects with B cell NHL in 2 cohorts: CAR T exposed subjects (Cohort 1) and CAR T naïve subjects (Cohort 2). A long-term follow-up is planned, in which subjects who received bbT369 will be followed for up to 15 years after drug product infusion to evaluate for safety and continued efficacy.

Trial Eligibility

Inclusion Criteria: * ≥18 years of age at the time of signing informed consent. * Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2. * Diagnosis of B-cell NHL according to WHO 2017 classification or WHO 2016 classification where applicable: 1. DLBCL (germinal center B cell \[GCB\] or activated B cell \[ABC\] type or not otherwise specified \[NOS\]) 2. HGBCL (with MYC and BCL2 and/or BCL6 rearrangements or NOS) 3. PMBCL 4. FL 3b 5. DLBCL transformed from FL * Participants must have relapsed or refractory (r/r) B cell NHL after autologous stem cell transplant (ASCT) or at least 2 prior lines of therapy including an anti-CD20 monoclonal antibody and an anthracycline containing chemotherapy regimen. Note: participants with DLBCL transformed from FL must have r/r disease after ASCT or at least 2 prior therapies following transformation irrespective of therapeutic agents. * At least 1 FDG-avid lesion per Lugano Classification criteria at time of enrollment. Exclusion Criteria: * Treatment with any investigational cellular therapy prior to enrollment. Treatment with an approved anti-CD19 CAR T cell therapy in an investigational setting may be permitted after discussion with and approval of the Sponsor. * Progression within 6 weeks of prior anti-CD19 CAR T cell therapy. * Residual toxicities or end-organ damage to vital organs from prior therapy that could put a subject at undue risk based on Investigator's assessment. Toxicities related to prior cytokine release syndrome (CRS) or neurotoxicity must be resolved. * If a subject has received prior anti-CD19 CAR T therapy, development of ≥ Grade 3 CAR T related CRS or ≥ Grade 3 neurotoxicity that in the opinion of the Investigator would cause unacceptable risk of toxicity to the subject upon treatment with bbT369. * Primary central nervous system (CNS) lymphoma or a history or presence of clinically relevant CNS pathology. * Active autoimmune disease requiring systemic immunosuppressive and/or cytotoxic therapy within the past two years. * Treatment with any prior anti-CD79a therapy. * Previous history of an allogeneic bone marrow transplantation. Autologous stem cell transplantation (ASCT) is permitted.

Study Info

Organization

2seventy bio


Primary Outcome

Phase 1: Incidence of safety events including: adverse events (AEs), adverse events of special interest (AESIs), and dose limiting toxicities (DLTs)


Outcome Timeframe Day 1 through Month 24

NCTID NCT05169489

Phases PHASE1,PHASE2

Primary Purpose TREATMENT

Start Date 2022-01-24

Completion Date 2024-08

Enrollment Target 50

Interventions

BIOLOGICAL bbT369

Locations Recruiting

Stanford Cancer Institute

United States, California, Stanford


Colorado Blood Cancer Institute

United States, Colorado, Denver


Moffitt Cancer Center

United States, Florida, Tampa


Sarah Cannon

United States, Tennessee, Nashville


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