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临床试验/NCT07277504
NCT07277504尚未招募1 期

Clinical Study on the Safety and Efficacy of Bedside CD19 CAR T-cell Therapy for B-cell Acute Lymphoblastic Leukemia

The General Hospital of Western Theater Command1 个研究点 分布在 1 个国家目标入组 50 人开始时间: 2025年12月1日最近更新:
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干预措施

试验速览

阶段
1 期
状态
尚未招募
发起方
入组人数
50
试验地点
1
主要终点
the incidence rate of CAR-T-related adverse events
研究概览研究设计入排标准研究组 & 干预措施结局指标研究者研究点记录与标识符相似试验

研究概览

简要总结

The purpose of this clinical trial is to learn if autologous bedside CD19-directed chimeric antigen receptor T-cell (CAR-T) therapy works to treat B-cell acute lymphoblastic leukemia (B-ALL) in adults. It will also learn about the safety and efficacy of the autologous bedside CD19 CAR-T cell product.

The main questions it aims to answer are:

  1. What adverse events occur and the incidence rate of dose-limiting toxicities (DLTs) within 28 days and CAR-T-related adverse events (AEs) after the autologous CD19 CAR-T cell infusion for B-ALL?
  2. Which dose level is the optimal biological dose (OBD)?
  3. What is the rate of minimal residual disease (MRD) negativity, complete remission (CR) or complete remission with incomplete hematologic recovery (CRi), duration of response (DOR), and overall survival (OS)?

Participants will:

  1. Receive autologous bedside CD19 CAR T-cell therapy on Day 0.
  2. Be hospitalized for at least 7 days post-infusion for close safety monitoring and remain within 2 hours of the treatment facility for at least 28 days.
  3. Visit the clinic at Day 7, Day 14, Day 28, then monthly for up to 12 months after CAR-T cells infusion, with continued long-term follow-up for safety and persistence.

研究设计

研究类型
Interventional
分配方式
Na
干预模型
Single Group
主要目的
Treatment
盲法
None

入排标准

年龄范围
18 Years 至 70 Years（Adult, Older Adult）
性别
All
接受健康志愿者
否

入选标准

  • •Age 18 to 70 years inclusive at the time of signing informed consent.
  • •Documented diagnosis of B-cell acute lymphoblastic leukemia (B-ALL) according to the National Comprehensive Cancer Network (NCCN) Clinical Practice Guidelines in Oncology for Acute Lymphoblastic Leukemia (2018, Version 1) or World Health Organization (WHO) classification criteria.
  • •CD19 expression confirmed by flow cytometry, immunohistochemistry, or pathology on bone marrow, peripheral blood, or tissue specimens. For patients for whom current sampling is not clinically feasible, results from testing performed within 60 days prior to informed consent may be acceptable, as determined by the investigator.
  • •Life expectancy ≥12 weeks in the opinion of the investigator.
  • •Eastern Cooperative Oncology Group (ECOG) performance status score of 0, 1, or
  • •Adequate organ function as demonstrated by the most recent assessment during the screening period, defined as:
  • •Creatinine clearance ≥60 mL/min (calculated using the Cockcroft-Gault formula)
  • •Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤3 × upper limit of normal (ULN)
  • •Total bilirubin ≤1.5 × ULN (for patients with documented Gilbert's syndrome, total bilirubin ≤2.5 × ULN is acceptable)
  • •For women of childbearing potential (WOCBP), a negative serum pregnancy test must be documented within 7 days prior to enrollment. WOCBP and male patients with partners who are WOCBP must agree to use highly effective contraceptive methods from the screening period through 12 months after CAR-T cell infusion. Women are considered not of childbearing potential if they are postmenopausal for at least 1 year or have documented evidence of surgical sterilization or congenital infertility. Women who are pregnant or breastfeeding are excluded from this study.
  • •Ability to understand and willingness to provide written informed consent prior to initiation of any study-specific procedures.
  • •Willingness and ability to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures, including long-term follow-up for up to 15 years.

排除标准

  • •Patients meeting any of the following criteria are not eligible for enrollment:
  • •Active central nervous system (CNS) involvement by B-ALL, defined as CNS-2 or CNS-3 status according to standard criteria.
  • •History of another malignancy within 2 years prior to screening, except for adequately treated basal cell or squamous cell carcinoma of the skin, or carcinoma in situ of the cervix.
  • •Patients who previously received CAR-T cell therapy and experienced Grade ≥4 cytokine release syndrome (CRS) or neurotoxicity are specifically excluded.
  • •Treatment with any investigational or approved anti-B-ALL therapeutic agent within 5 half-lives prior to enrollment (excluding supportive care medications).
  • •Radioimmunotherapy or radiotherapy within 8 weeks prior to enrollment.
  • •Receipt of live attenuated vaccine within 4 weeks prior to screening.
  • •Current or anticipated use of systemic corticosteroids at high dose (defined as a total cumulative dose equivalent to ≥60 mg dexamethasone or equivalent corticosteroid) within 4 weeks prior to lymphodepletion chemotherapy. Physiologic replacement doses, topical, inhaled, nasal, and ophthalmic corticosteroids are permitted.
  • •Active acute or chronic graft-versus-host disease (GVHD) requiring systemic treatment within 4 weeks prior to CAR-T cell infusion.
  • •Major surgical procedure within 3 months prior to screening.
  • •Active CNS disorder or history of irreversible severe CNS toxicity from prior B-ALL therapy resulting in organic brain lesions or CNS dysfunction, including but not limited to seizure disorder, cerebrovascular accident, severe brain injuries, dementia, Parkinson's disease, cerebellar disease, organic brain syndrome, or psychosis.
  • •History of hypertensive crisis or hypertensive encephalopathy within 3 months prior to screening.
  • •Any uncontrolled cardiovascular disease within 6 months prior to enrollment, or any of the following:
  • •Ventricular or atrial arrhythmia ≥Grade 2
  • •Bradycardia ≥Grade 2
  • •Myocardial infarction
  • •Severe or unstable angina pectoris
  • •Symptomatic congestive heart failure
  • •Cerebrovascular accident or transient ischemic attack
  • •Pulmonary embolism
  • •Deep vein thrombosis
  • •Poorly controlled hypertension despite standard medical management
  • •Left ventricular ejection fraction (LVEF) <45% as assessed by echocardiography or multigated acquisition (MUGA) scan at screening
  • •Any uncontrolled pulmonary disease within 6 months prior to enrollment, or any of the following:
  • •Pulmonary embolism
  • •Chronic obstructive pulmonary disease
  • •History of idiopathic pulmonary fibrosis, organizing pneumonia (e.g., bronchiolitis obliterans), drug-induced pneumonitis, or idiopathic pneumonitis
  • •Evidence of active pneumonia on chest computed tomography (CT) scan at screening
  • •Symptomatic or uncontrolled interstitial lung disease
  • •Clinically significant pulmonary function abnormalities Note: History of radiation pneumonitis/pulmonary fibrosis in a radiation field is permitted if asymptomatic.
  • •Active bacterial, fungal, protozoal, or viral infection that is not adequately controlled despite appropriate therapy at the time of enrollment, or positive blood culture within 7 days prior to enrollment.
  • •Known active infection with any of the following:
  • •Hepatitis B virus (HBV): Positive HBV surface antigen (HBsAg) or HBV core antibody (HBcAb) with detectable HBV DNA above the normal range
  • •Hepatitis C virus (HCV): Positive HCV antibody with detectable HCV RNA above the normal range
  • •Human immunodeficiency virus (HIV): Positive HIV antibody
  • •Human T-lymphotropic virus (HTLV): Positive HTLV antibody
  • •Treponema pallidum (syphilis): Positive T. pallidum antibody
  • •Cytomegalovirus (CMV): Positive CMV DNA by polymerase chain reaction (PCR)
  • •Legally incapacitated individuals under guardianship or conservatorship.
  • •Psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the study or ability to provide informed consent.
  • •Any abnormal finding, medical condition, or laboratory test result during screening that, in the investigator's judgment, may jeopardize patient safety or interfere with study conduct or interpretation of results.
  • •Any planned medical or surgical intervention that would interfere with the conduct of the study.
  • •Contraindication to any medication that may be required during the study, including but not limited to lymphodepletion chemotherapy agents (fludarabine, cyclophosphamide) and medications for management of adverse reactions (e.g., tocilizumab for CRS management, corticosteroids for ICANS management).

研究组 & 干预措施

CAR T-cell treatment

Experimental

干预措施: CD19 CAR T cells (Drug)

结局指标

主要结局

the incidence rate of CAR-T-related adverse events

时间窗: Up to 28 days after injection

Incidence of adverse events(AEs) after infusion, The number, frequency, severity, and laboratory findings of all treatment-related adverse events/serious adverse events are included. Description, time, classification, and outcome of AE events resulted from the investigational medical product, delivery method, or emergency measures will be recorded in the case report form.

The incidence rate of Dose limited toxicity (DLTs)

时间窗: Up to 28 days after infusion

Dose limited toxicity(DLT) was defined as the occurrence of any of the following adverse events within 28 days of the infusion of CAR-T cells after optimal supportive treatment, which were discussed with the investigator and determined to be associated or likely to be associated with the infusion. Any DTLs within 28 days after CAR-T infusion will be recorded in time, including severity, occurrence time, duration, treatment methods and prognosis.

次要结局

  • the rate of minimal residual disease (MRD) negativity(up to 1 year after CAR-T cells infusion)
  • overall response rate (ORR)(up to 1 year after CAR-T cells infusiion)
  • Duration of Response (DOR)(up to 1 year after CAR-T cells infusion)
  • overall survival (OS)(up to 1 year after CAR-T infusion)

研究者

发起方
The General Hospital of Western Theater Command
申办方类型
Other
责任方
Principal Investigator
主要研究者

Yihai2024

Head of department of hematology

The General Hospital of Western Theater Command

研究点 (1)

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