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临床试验/NCT04690595
NCT04690595
进行中(未招募)
1 期

A Phase 1 Study Evaluating BAFFR-targeting CAR T Cells for Patients With Relapsed or Refractory B-cell Acute Lymphoblastic Leukemia

PeproMene Bio, Inc.1 个研究点 分布在 1 个国家目标入组 24 人2021年5月18日

概览

阶段
1 期
干预措施
BAFFR-CAR T cells
疾病 / 适应症
Relapsed or Refractory B-cell Acute Lymphoblastic Leukemia
发起方
PeproMene Bio, Inc.
入组人数
24
试验地点
1
主要终点
Incidence of adverse events
状态
进行中(未招募)
最后更新
2个月前

概览

简要总结

A Phase 1 Study Evaluating BAFFR-targeting CAR T Cells for Patients with Relapsed or Refractory B-cell Acute Lymphoblastic Leukemia

详细描述

This phase I trial evaluates the side effects and best dose of BAFFR-CAR T cells in treating patients with B-cell Acute Lymphoblastic Leukemia that has come back (recurrent) or does not respond to treatment (refractory). T cells are infection fighting blood cells that can kill cancer cells. The T cells given in this study will come from the patient and will have a new gene put in them that makes them able to recognize BAFFR, a protein on the surface of cancer cells. These BAFFR-specific T cells may help the body's immune system identify and kill BAFFR+ cancer cells.

注册库
clinicaltrials.gov
开始日期
2021年5月18日
结束日期
2027年11月18日
最后更新
2个月前
研究类型
Interventional
研究设计
Single Group
性别
All

研究者

责任方
Sponsor

入排标准

入选标准

  • Documented informed consent of the participant and/or legally authorized representative.
  • Agreement to allow the use of archival tissue from diagnostic tumor biopsies. If unavailable, exceptions may be granted with study PI approval.
  • Age ≥ 18 years.
  • Life expectancy ≥ 16 weeks.
  • Histologically confirmed B-ALL or B-cell lymphoblastic lymphoma
  • Relapsed/refractory disease after failure of ≥ 2 prior lines of therapy.
  • Evidence of active BAFF-R expression at the time of enrollment.
  • Recovered to ≤ Grade 1 from the acute toxic effects (except alopecia) of prior anti-cancer therapy.
  • No known contraindications to leukapheresis, steroids or tocilizumab.
  • Ineligible for or failed prior CD19-targeted immunotherapy (e.g., blinatumomab or CD19-CAR T cells).

排除标准

  • Autologous/allogeneic stem cell transplant within 100 days at the time of enrollment.
  • Immunosuppressant medications within 1 months prior to protocol enrollment.
  • Concurrent use of systemic steroids or chronic use of immunosuppressant medications. Recent or current use of inhaled steroids is not exclusionary. Physiologic replacement of steroids (prednisone ≤ 7.5 mg /day or equivalent) is allowed
  • Auto-immune disease or active GVHD within 4 months prior to protocol enrollment requiring systemic immunosuppressant therapy.
  • Class III/IV cardiovascular disability according to the New York Heart Association (NYHA) Classification.
  • Subjects with clinically significant arrhythmia or arrhythmias not stable on medical management within 2 weeks of enrollment.
  • Any abnormal liver enzyme levels (as defined ≥ULN in ALT, AST, Bilirubin and Alkaline Phosphatase levels) at time of enrollment
  • . Subjects with a known history or prior diagnosis of optic neuritis or other immunologic or inflammatory disease affecting the central nervous system, including seizure disorder.
  • History of allergic reactions attributed to compounds of similar chemical or biologic composition to study agent.
  • Known bleeding disorders (e.g., von Willebrand's disease) or hemophilia.

研究组 & 干预措施

BAFFR-CAR T cells

B-cell activating factor receptor-Chimeric antigen receptor T cells

干预措施: BAFFR-CAR T cells

结局指标

主要结局

Incidence of adverse events

时间窗: Up to 1 year post treatment

Toxicity will be graded per Common Terminology Criteria for Adverse Events version 5.0, Cytokine Release Syndrome (CRS) and neurotoxicity which use the American Society for Transplantation and Cellular Therapy Consensus Criteria (ASTCT) and Graft versus Host Disease (GVHD) criteria. Toxicities will be followed from the start of lymphodepletion until the end of the study.

次要结局

  • Minimal residual disease (MRD)(Up to 1 year post treatment)
  • B cell frequency(Up to 1 year post treatment)
  • Disease response(Up to 1 year post treatment)
  • Progression-free survival (PFS)(From T cell infusion to the first observation of disease relapse/progression or death from any cause, whichever occurs first, assessed up to 15 years.)
  • Overall survival (OS)(From the day of BAFFR-CAR T cell infusion to death from any cause assessed, up to 15 years.)
  • Severity of graft-versus-host disease (GVHD) in recipients of prior allogeneic hematopoietic stem cell transplantation(Up to 1 year post treatment.)

研究点 (1)

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PeproMene Bio's BAFFR-CAR T Therapy Shows Promising Results in Relapsed B-Cell Cancers- PeproMene Bio's PMB-CT01, a first-in-class BAFFR-CAR T therapy, achieved complete responses in all seven B-NHL patients and four of six B-ALL patients in Phase 1 trials. - The therapy demonstrated exceptional safety with no Grade ≥1 cytokine release syndrome or neurotoxicity in B-NHL patients and minimal toxicity in B-ALL patients. - PMB-CT01 showed efficacy in CD19-negative patients and those who failed prior CD19-directed therapy, with remissions lasting up to 32+ months. - Two abstracts from the ongoing Phase 1 studies have been selected for oral presentations at the 2025 ASH Annual Meeting.Novel BAFF-R CAR-T Therapy Achieves Complete Response in Heavily Pretreated Follicular Lymphoma Patient- PeproMene Bio's first-in-class BAFF-R targeted CAR-T cell therapy (PMB-CT01) has achieved complete remission in a heavily pretreated follicular lymphoma patient who had failed seven prior therapies including CD19 CAR-T. - All seven patients with relapsed/refractory B-cell non-Hodgkin lymphoma treated with PMB-CT01 have achieved complete responses lasting from 1 to 29+ months, with minimal toxicity reported. - PMB-CT01 targets the BAFF receptor, which is crucial for B-cell survival, potentially making it harder for tumor cells to escape therapy through antigen loss compared to CD19-targeted approaches.PeproMene Bio's BAFFR-CAR T Cell Therapy Shows Promise in Relapsed B-ALL Trial- PeproMene Bio reports complete remission in the first patient treated with PMB-CT01 (BAFFR-CAR T cells) for relapsed/refractory B-cell acute lymphoblastic leukemia (B-ALL). - The Phase 1 trial at City of Hope showed minimal toxicity, with only low-grade cytokine release syndrome that resolved without intervention. - The patient, with CD19- and CD22-negative relapsed B-ALL, had limited therapeutic options prior to receiving PMB-CT01. - PMB-CT01, a first-in-class BAFFR-targeted CAR T-cell therapy, demonstrates potential in overcoming B-cell malignancies, supported by preclinical data.