决定异体 CAR T 细胞排斥与扩增的细胞和分子机制
Cellular and molecular mechanisms determining allogeneic CAR T cell rejection and expansion.
我们评估了11例接受单一批次cemacabtagene ansegedleucel(cema-cel)治疗的大B细胞淋巴瘤患者,cemacabtagene ansegedleucel是一种异体抗CD19 CAR T产品。
英文原题:B-Cell Activating Factor Receptor (BAFFR)-Based Chimeric Antigen Receptor T-Cells With Fludarabine and Cyclophosphamide Lymphodepletion for the Treatment of Relapsed or Refractory B-cell Hematologic Malignancies
这是一项 I 期注册临床试验,评估自体 CAR-T 细胞治疗非霍奇金淋巴瘤、慢性淋巴细胞白血病、弥漫大 B 细胞淋巴瘤的安全性、可行性及初步疗效。当前状态:招募中。计划入组 27 例。试验地点:美国 · 杰克逊维尔(共 1 个中心)。登记号:NCT06191887。
不限性别 · ≥ 18 Years
纳入标准:
* 预注册:年龄 ≥ 18 岁
* 预注册:确诊为以下复发或难治性 B 细胞血液系统恶性肿瘤之一:慢性淋巴细胞白血病/小淋巴细胞淋巴瘤(CLL/SLL)、滤泡性淋巴瘤(FL)、套细胞淋巴瘤(MCL)、边缘区淋巴瘤(MZL)或大 B 细胞淋巴瘤(LBCL),包括由 CLL/SLL 转化的 Richter 转化
* 对于 CD19+ B 细胞恶性肿瘤;复发或难治性疾病由以下组织病理学之一定义:
* 活检证实的 SLL 或流式细胞术证实的 CLL;复发或难治性疾病定义为:
* 根据国际慢性淋巴细胞白血病研讨会(iwCLL)2018 标准,通过正电子发射断层扫描/计算机断层扫描(PET/CT)或计算机断层扫描(CT)标准证明疾病进展或稳定
* 活检证实的任何组织病理学类型的 B 细胞非霍奇金淋巴瘤(NHL)(包括 CLL 的 Richter 转化);复发或难治性疾病定义为:
* 根据修订的恶性淋巴瘤 Lugano 疗效标准,通过 PET/CT 或 CT 标准证明对最近一次化疗方案的最佳疗效为疾病进展或稳定
* 预注册:以下疾病特异性既往治疗线数:
* 对于 CLL/SLL,患者必须接受过 ≥ 两线既往治疗,和/或 ≥ 6 个月的二线既往 BTK 抑制剂(如 ibrutinib 或其他如 acalabrutinib 或 zanubrutinib)治疗,且必须对 venetoclax 无应答或不耐受。例外:已知有 ibrutinib 耐药突变(BTK 或磷脂酶 Cγ2)且处于疾病稳定(SD)或部分缓解(PR)的患者,即使接受 ibrutinib 治疗不足 6 个月也可纳入
* 这些患者可能接受过或未接受过针对分化簇 20(CD20)的抗体治疗。
* 对于滤泡性淋巴瘤,患者必须接受过 ≥ 两线既往治疗,包括针对 CD20 的抗体。
* 注:既往针对分化簇 19(CD19)的嵌合抗原受体 T 细胞治疗(CART)必须有 100 天的洗脱期。
* 对于套细胞淋巴瘤,患者必须接受过 ≥ 两线既往治疗,包括针对 CD20 的抗体和 BTK 抑制剂。
* 注:既往 CD19 靶向 CART 必须有 100 天的洗脱期。
* 对于边缘区淋巴瘤,患者必须接受过 ≥ 两线既往治疗,包括针对 CD20 的抗体。
* 注:既往 CD19 靶向 CART 必须有 100 天的洗脱期。
* 对于大 B 细胞淋巴瘤,患者必须接受过 ≥ 两线既往治疗,包括针对 CD20 的抗体。既往暴露于 CD19 靶向 CART 将由主要研究者酌情允许。
* 注:既往 CD19 靶向 CART 失败必须有 100 天的洗脱期
* 对于Richter转化,患者必须已接受过≥两线既往治疗,包括一种针对CD20的抗体。
* 100天洗脱期从最后一次既往CAR-T输注日期开始计算。
* 预注册:可测量疾病
* 注册:BAFFR检测阳性
* 注册:可测量疾病
* 注册:东部肿瘤协作组(ECOG)体能状态0、1或2
* 注册:血红蛋白≥ 9.0 g/dL(除非由于有记录的骨髓疾病受累)在注册前≤14天内获得
* 注册:绝对中性粒细胞计数(ANC)≥ 1500/mm^3(除非由于有记录的骨髓疾病受累)在注册前≤14天内获得
* 注册:血小板计数≥100,000/mm^3(除非由于有记录的骨髓疾病受累)在注册前≤ 14天内获得
* 注册:总胆红素≤ 1.5 x 正常上限(ULN)(Gilbert综合征受试者如果其总胆红素≤ 3.0 x ULN且直接胆红素≤ 1.5 x ULN可入选)在注册前≤ 14天内获得
* 注册:丙氨酸氨基转移酶(ALT)和天冬氨酸转氨酶(AST)≤ 3 x ULN(肝受累患者≤ 5 x ULN)在注册前≤ 14天内获得
* 注册:凝血酶原时间(PT)/国际标准化比值(INR)/活化部分凝血活酶时间(aPTT)≤ 1.5 x ULN或如果患者正在接受抗凝治疗且INR或aPTT在治疗目标范围内,在注册前≤ 14天内获得
* 在注册前≥ 30天接受稳定维持抗凝治疗方案的患者,如果研究者判断患者适合本研究,其PT/INR测量值可> 1.5 X ULN
* 注册:使用Cockcroft-Gault公式计算的肌酐清除率≥45 ml/min,在注册前≤ 14天内获得
* 注册:注册前≤ 7天内进行妊娠试验阴性,仅限有生育潜力者。如果尿检阳性或无法确认为阴性,将需要进行血清妊娠试验
* 注册:提供书面知情同意,理解并遵守方案要求的研究程序
* 注册:患者必须具有≥ 45%的射血分数(EF)
* 注册:患者必须在室内空气中的脉搏血氧测量值> 92%
* 注册:愿意提供强制性血液标本用于相关性研究
* 注册:愿意返回入组机构进行研究随访
排除标准:
* 预注册:既往实体器官移植
* 预注册:预注册前≤ 6个月内有不稳定型心绞痛、临床显著心律失常或心肌梗死,或预注册时有3级或更高级别心包积液
* 预注册:既往抗BAFF-R治疗
* 预注册:已知对淋巴细胞清除(LD)化疗有禁忌症
* 预登记:预登记前 ≤ 14 天内使用过全身性抗肿瘤治疗或研究性药物
* 预登记:正在接受任何其他被视为针对 BAFF-R 治疗的研究性药物
* 预登记:预登记前 ≤ 60 天内接受过自体 HCT
* 预登记:未控制的并发非心脏疾病,包括但不限于:
* 既往或并发恶性肿瘤
* 持续或活动性感染
* 精神疾病/社会状况
* 因晚期恶性肿瘤并发症或其他疾病导致静息时呼吸困难,需要持续氧疗 * 妊娠或哺乳期的有生育潜力者
* 预期寿命 < 6 周
* 需要全身性皮质类固醇(>10 mg 泼尼松或等效剂量/天)和/或其他免疫抑制治疗的患者。允许患者使用局部皮质类固醇
* 任何其他会限制研究要求依从性的情况
* 预登记:筛选期间脑脊液(CSF)或磁共振成像(MRI)检测到恶性细胞提示脑转移,或既往有恶性肿瘤累及中枢神经系统(CNS)病史(CSF 或影像学)且疾病仍处于活动期。注:既往有 CNS 受累经治疗后缓解且无活动性疾病的患者,若符合其他纳入标准,将被视为合格
* 预登记:有癫痫发作性疾病、重大脑血管缺血/出血、痴呆、小脑疾病或任何累及 CNS 的自身免疫性疾病病史
* 预登记:预登记前 ≤ 14 天内接受过放射治疗
* 预登记:预登记前 ≤ 6 个月内接受过既往异基因造血干细胞移植(HCT);无论距既往异基因 HCT 时间长短,有活动性移植物抗宿主病(GVHD)的患者均不符合资格
* 预登记:人类免疫缺陷病毒(HIV)阳性患者
* 预登记:纽约心脏协会(NYHA)III 级或以上心力衰竭的受试者
* 登记:根据研究者判断符合 auto-HCT 条件
* 登记:根据研究者判断,存在未控制的活动性细菌、病毒或真菌感染
* 登记:活动性乙型肝炎或丙型肝炎感染的患者被排除在研究之外。记录为 HIV 阳性或检测证实 HIV 感染的患者不符合本研究资格。登记前 ≤ 45 天内进行的传染病检测(HIV-1、HIV-2、丙型肝炎病毒(HCV)抗体和聚合酶链反应(PCR)、乙型肝炎病毒(HBV)表面抗原、HBV 表面抗体、HBV 核心抗体)可考虑用于受试者资格评估
* 登记:既往或并发恶性肿瘤,但已充分切除的基底细胞或鳞状细胞皮肤癌、宫颈原位癌,或既往已完全切除且登记前缓解≥ 5年的恶性肿瘤除外
* 登记:有生育能力者处于妊娠或哺乳期
* 登记:预期寿命< 6周
Inclusion Criteria:
* PRE-REGISTRATION: Age ≥ 18 years
* PRE-REGISTRATION: Confirmed diagnosis of 1 of the following relapsed or refractory B-cell hematologic malignancies: chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL), follicular lymphoma (FL), mantle cell lymphoma (MCL), marginal zone lymphoma (MZL), or large B cell lymphoma (LBCL) including Richter's transformation from CLL/SLL
* For CD19+ B cell malignancies; relapsed or refractory disease is defined by one of the following histopathology:
* Biopsy proven SLL or flow cytometry proven CLL; relapsed or refractory disease is defined as:
* Demonstration of progressive or stable disease by positron emission tomography/computed tomography (PET/CT) or computed tomography (CT) criteria according to the international workshop on chronic lymphocytic leukemia (iwCLL) 2018 criteria
* Biopsy proven B-cell non-Hodgkin lymphoma (NHL) of any histopathology (including Richter Transformation of CLL); relapsed or refractory disease is defined as:
* Demonstration of progressive or stable disease by PET/CT or CT criteria as the best response to the most recent chemotherapy regimen according to the revised Lugano Response Criteria for Malignant Lymphoma
* PRE-REGISTRATION: Disease Specific prior lines of therapies below:
* For CLL/SLL, patients must have received ≥ two prior lines of therapy, and/or ≥ 6 months of second line prior BTK inhibition (e.g. ibrutinib or other such as acalabrutinib or zanubrutinib) and must have failed to respond to venetoclax or be intolerant. Exception: Patients in stable disease (SD) or partial response (PR) with a known ibrutinib resistance mutation (BTK or phospholipase Cγ2) may be included even if on ibrutinib therapy for less than 6 months
* These patients may or may not have received prior antibody directed against cluster of differentiation 20 (CD20).
* For Follicular Lymphoma, patients must have received ≥ two prior lines of therapy, including an antibody directed against CD20.
* NOTE: Prior cluster of differentiation 19 (CD19) directed chimeric antigen receptor T-cell therapy (CART) must have a 100-day washout period.
* For Mantle Cell Lymphoma, patients must have received ≥ two prior lines of therapy, including an antibody directed against CD20, and a BTK inhibitor.
* NOTE: Prior CD19 directed CART must have a 100-day washout period.
* For Marginal Zone Lymphoma, patients must have received ≥ two prior lines of therapy, including an antibody directed against CD20.
* NOTE: Prior CD19 directed CART must have a 100-day washout period.
* For Large B cell Lymphoma, patients must have received ≥ two prior lines of therapy, including an antibody directed against CD20. Prior exposure to CD19 directed CART will be allowed at the discretion of the Principal Investigator.
* NOTE: Prior failed CD19 directed CART must have a 100-day washout period
* For Richter's Transformation, patients must have received ≥two prior lines of therapy, including an antibody directed against CD20.
* 100-day washout period starts from the date of the last prior CAR-T infusion.
* PRE-REGISTRATION: Measurable disease
* REGISTRATION: Positive BAFFR test
* REGISTRATION: Measurable disease
* REGISTRATION: Eastern Cooperative Oncology Group (ECOG) performance status 0, 1 or 2
* REGISTRATION: Hemoglobin ≥ 9.0 g/dL (unless due to documented marrow involvement with disease) obtained ≤14 days prior to registration
* REGISTRATION: Absolute neutrophil count (ANC) ≥ 1500/mm\^3 (unless due to documented marrow involvement with disease) obtained ≤14 days prior to registration
* REGISTRATION: Platelet count ≥100,000/mm\^3 (unless due to documented marrow involvement with disease) obtained ≤ 14 days prior to registration
* REGISTRATION: Total bilirubin ≤ 1.5 x upper limits of normal (ULN) (Subjects with Gilbert's Syndrome may be included if their total bilirubin is ≤ 3.0 x ULN and direct bilirubin ≤ 1.5 x ULN) obtained ≤ 14 days prior to registration
* REGISTRATION: Alanine aminotransferase (ALT) and aspartate transaminase (AST) ≤ 3 x ULN (≤ 5 x ULN for patients with liver involvement) obtained ≤ 14 days prior to registration
* REGISTRATION: Prothrombin time (PT)/international normalized ratio (INR) /activated partial thromboplastin time (aPTT) ≤ 1.5 x ULN OR if patient is receiving anticoagulant therapy and INR or aPTT is within target range of therapy obtained ≤ 14 days prior to registration
* Patients on a stable, maintenance regimen of anticoagulant therapy for ≥ 30 days prior to registration may have PT/INR measurements \> 1.5 X ULN if, in the judgment of the investigator, the patient is suitable for the study
* REGISTRATION: Calculated creatinine clearance ≥45 ml/min using the Cockcroft-Gault formula obtained ≤ 14 days prior to registration
* REGISTRATION: Negative pregnancy test done ≤ 7 days prior to registration, for persons of childbearing potential only. If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required
* REGISTRATION: Provide written informed consent understand and comply with protocol-required study procedures
* REGISTARTION: Patients must have an ejection fraction (EF) of ≥ 45%
* REGISTRATION: Patients must have pulse ox measurements of \> 92% on room air
* REGISTRATION: Willingness to provide mandatory blood specimens for correlative research
* REGISTRATION: Willing to return to enrolling institution for study follow-up
Exclusion Criteria:
* PRE-REGISTRATION: Prior solid organ transplantation
* PRE-REGISTRATION: Unstable angina, clinically significant arrhythmia, or myocardial infarction ≤ 6 months of prior to pre-registration, or grade 3 or higher pericardial effusion at the time of pre-registration
* PRE-REGISTRATION: Prior anti-BAFF-R therapies
* PRE-REGISTRATION: Known contraindication to lymphodepleting (LD) chemotherapy
* PRE-REGISTRATION: Use of systemic antitumor therapy or investigational agent ≤ 14 days, prior to pre-registration
* PRE-REGISTRATION: Receiving any other investigational agent which would be considered as a treatment for the BAFF-R
* PRE-REGISTRATION: Autologous HCT ≤ 60 days prior to pre-registration
* PRE-REGISTRATION: Uncontrolled intercurrent non-cardiac illness including, but not limited to:
* Previous or concurrent malignancy
* Ongoing or active infection
* Psychiatric illness/social situations
* Dyspnea at rest due to complications of advanced malignancy or other disease that requires continuous oxygen therapy \* Persons of childbearing potential who are pregnant or breastfeeding
* Life Expectancy of \< 6 weeks
* Persons requiring systemic corticosteroids (\>10 mg prednisone or equivalent per day) and/or other immunosuppressive therapy. Patients are allowed to use topical corticosteroids
* Any other conditions that would limit compliance with study requirements
* PRE-REGISTRATION: Detectable malignant cells from cerebrospinal fluid (CSF) or magnetic resonance imaging (MRI) indicating brain metastases during screening, or a history of central nervous system (CNS) involvement by malignancy (CSF or imaging) with still active disease. Note: Patients with a history of CNS involvement resolving after treatment and without active disease will be considered eligible if other inclusion criteria are met
* PRE-REGISTRATION: History of a seizure disorder, major cerebrovascular ischemia/hemorrhage, dementia, cerebellar disease, or any autoimmune disease with CNS involvement
* PRE-REGISTRATION: Radiation therapy ≤ 14 days prior to pre-registration
* PRE-REGISTRATION: Prior allogeneic hematopoietic stem cell transplant (HCT) in ≤ 6 months prior to pre-registration; patients with active graft versus host disease (GVHD) will not be eligible regardless of duration from prior allogeneic HCT
* PRE-REGISTRATION: Human immunodeficiency virus (HIV) positive patients
* PRE-REGISTRATION: Subjects with New York Health Association (NYHA) class III or greater heart failure
* REGISTRATION: Eligible for auto-HCT based on investigator judgement
* REGISTRATION: Presence of active bacterial, viral, or fungal infection that is uncontrolled, based on investigator judgment
* REGISTRATION: Patients with active hepatitis B or hepatitis C infections are excluded from the study. Patients who are documented to be HIV positive or proven HIV infection from testing are ineligible for the study. Infectious disease testing (HIV-1, HIV-2, hepatitis C virus (HCV) antibody and polymerase chain reaction (PCR), hepatitis B virus (HBV) surface antigen, HBV surface antibody, HBV core antibody) performed ≤ 45 days prior to registration may be considered for subject eligibility
* REGISTRATION: Previous or concurrent malignancy, except basal cell or squamous cell skin carcinoma, adequately resected and in situ carcinoma of cervix, or a previous malignancy that was completely resected and has been in remission for ≥ 5 years prior to registration
* REGISTRATION: Persons of childbearing potential who are pregnant or breastfeeding
* REGISTRATION: Life expectancy of \< 6 weeks以上为辅助阅读译文。是否适合入组须由主治医生判断,最终以登记平台与研究者确认为准。
主要终点:Incidence of dose-limiting toxicities (DLT) · DLTs are defined per the protocol and assessed by the number of DLTs that occur during the DLT evaluation period and persist beyond the specified duration (relative to the time of onset, defined as within 28 days). · Up to 28 days after MC10029 (autologous B-cell activating factor receptor [BAFFR]-targeting chimeric antigen receptor [CAR] T cells product) infusion;Incidence and severity of treatment emergent adverse events · Defined as adverse events (AEs) that occur or worsen in severity on or after MC10029 product infusion. · Up to 15 years
次要终点:Overall response rate;Complete response rate;Duration of response;Progression free survival;Overall survival;Number of conforming versus nonconforming products
患者接受白细胞分离术。随后患者在第-5天至第-3天接受环磷酰胺IV,输注时间超过60分钟,以及氟达拉滨IV,输注时间超过30分钟;或在第-4天和第-3天接受苯达莫司汀IV,输注时间超过10分钟。患者在第0天接受基于BAFFR的嵌合抗原受体T细胞IV。患者在筛选时接受超声心动图和MRI,在整个研究期间接受CT扫描、PET扫描、骨髓活检/穿刺和血液样本采集,并在疾病进展时接受肿瘤活检。
这项I期试验测试基于B细胞活化因子受体(BAFFR)的嵌合抗原受体T细胞联合氟达拉滨和环磷酰胺淋巴细胞清除术的安全性、副作用和最佳剂量,用于治疗经过一段时间改善后复发(relapsed)或对治疗无反应(refractory)的B细胞血液系统恶性肿瘤患者。基于BAFFR的嵌合抗原受体T细胞是一种治疗方法,将患者的T细胞(一种免疫系统细胞)在实验室中改变,使其能够攻击癌细胞。T细胞取自患者的血液。然后,在实验室中将一种能与患者癌细胞上特定蛋白质结合的特殊受体的基因添加到T细胞中。这种特殊受体称为嵌合抗原受体(CAR)。大量CAR T细胞在实验室中培养,并通过输注给予患者以治疗某些癌症。给予化疗,如氟达拉滨和环磷酰胺,有助于杀死体内的癌细胞,并帮助身体准备接受基于BAFFR的嵌合抗原受体T细胞。给予基于BAFFR的嵌合抗原受体T细胞联合氟达拉滨和环磷酰胺进行淋巴细胞清除术,可能对复发或难治性B细胞血液系统恶性肿瘤患者的治疗更有效。
This phase I trial tests safety, side effects and best dose of B-cell activating factor receptor (BAFFR)-based chimeric antigen receptor T-cells, with fludarabine and cyclophosphamide lymphodepletion, for the treatment of patients with B-cell hematologic malignancies that has come back after a period of improvement (relapsed) or that does not respond to treatment (refractory). BAFFR-based chimeric antigen receptor T-cells is a type of treatment in which a patient's T cells (a type of immune system cell) are changed in the laboratory so they will attack cancer cells. T cells are taken from a patient's blood. Then the gene for a special receptor that binds to a certain protein on the patient's cancer cells is added to the T cells in the laboratory. The special receptor is called a chimeric antigen receptor (CAR). Large numbers of the CAR T cells are grown in the laboratory and given to the patient by infusion for treatment of certain cancers. Giving chemotherapy, such as fludarabine and cyclophosphamide, helps ill cancer cells in the body and helps prepare the body to receive the BAFFR based chimeric antigen receptor T-cells. Giving BAFFR based chimeric antigen receptor T-cells with fludarabine and cyclophosphamide for lymphodepletion may work better for the treatment of patients with relapsed or refractory B-cell hematologic malignancies.
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