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:CD19-directed CAR-T Cell Therapy for R/R Acute Leukemia and Lymphoma
⚠ 该试验的登记信息已有 22 个月未更新, 页面上显示的「招募中」可能已经失效。联系研究中心之前,建议先到 ClinicalTrials.gov 核对登记原文的最新状态与联系方式。
这是一项 I/II 期注册临床试验,评估细胞治疗用于白血病、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 81 例。试验地点:其他 · 坎皮纳斯、里贝朗普雷图、圣保罗(共 5 个中心)。登记号:NCT06101381。
不限性别 · ≥ 3 Years 且 ≤ 70 Years
入选标准 非霍奇金淋巴瘤(B-NHL) • 已签署知情同意书;年龄18至70岁;ECOG体能状态<2。 • 活检确诊复发/难治性B-NHL,类型包括:弥漫大B细胞淋巴瘤(DLBCL,NOS);高级别B细胞淋巴瘤(HGBCL);MYC和BCL-2重排的DLBCL/HGBCL;3B级滤泡性淋巴瘤(FL);或转化性滤泡性淋巴瘤(tFL)。 • ≥2线全身治疗后复发或难治,且至少一种方案含抗CD20单克隆抗体和蒽环类药物。难治定义:末次治疗最佳疗效为部分缓解(PR)、疾病稳定(SD)或疾病进展(PD),按Lugano标准PET-CT评估并由新活检确认。复发定义:末次治疗达到完全缓解后,按Lugano标准PET-CT评估并由新活检确认疾病再次出现。 • 已接受自体造血干细胞移植(ASCT)或不适合移植。不适合移植定义为挽救化疗后未达到至少部分缓解,或研究者判定造血祖细胞(HPC)动员和/或采集失败。 • 有可测量疾病:淋巴结病灶长径>15 mm(短径不限)和/或结外病灶(淋巴结/淋巴结肿块以外,包括肝脏和脾脏)长径>10 mm。 • 器官功能充分:肾功能eGFR≥40 mL/min/1.73 m²;肝功能ALT、AST≤2.5×ULN,总胆红素≤1.5×ULN(Gilbert综合征患者除外);血液学指标(不论过去14天内是否输血)ANC>500/μL、血小板≥50,000/μL、血红蛋白>7.0 g/dL。 • 有生育能力女性愿意CAR-T输注后1年内有效避孕;男性愿意在输注后1年内采用屏障避孕。 • 能遵守住院及门诊治疗、实验室监测和整个研究期间所需的门诊访视。 急性淋巴细胞白血病(B-ALL) • 已签署知情同意书;年龄≥3且<25岁。≥16岁者ECOG体能状态<2;<16岁者Lansky评分≥50%。 • 复发/难治性CD19阳性B-ALL,筛选访视前3个月内有CD19表达记录。复发/难治定义为:经过两种不同化疗方案仍未达到血液学完全缓解(形态学骨髓原始淋巴细胞<5%);或至少一种既往化疗方案后复发/难治,且因无合适供者(包括替代供者)、合并症、既往接受过或拒绝移植而不适合异基因造血祖细胞移植(HSCT);或HSCT后≥6个月复发;或费城染色体阳性B-ALL接受酪氨酸激酶抑制剂(TKI)治疗后复发/难治。 • 筛选前30天内形态学骨髓原始淋巴细胞≥5%。 • 肾功能eGFR≥40 mL/min/1.73 m²;肝功能ALT、AST≤5×ULN,总胆红素≤2×ULN(Gilbert综合征患者除外)。有生育能力女性愿意CAR-T输注后1年内有效避孕;男性愿意在输注后1年内采用屏障避孕。能够遵守门诊治疗、实验室监测、研究期间的门诊访视,以及主要研究和长期随访观察研究要求。 共同排除标准(B-NHL及B-ALL) • 筛选前2年内有B-NHL/B-ALL以外的既往或同时恶性肿瘤,但以下情况除外:已根治的非黑色素瘤皮肤癌或宫颈原位癌;已根治且无活动性疾病证据的局限性乳腺癌;主动监测或接受抗雄激素治疗、无转移证据的局限性前列腺癌。 • 影响造血系统的综合征/遗传病(如唐氏综合征、范可尼贫血、端粒病、Li-Fraumeni综合征、Diamond-Blackfan贫血或先天性免疫缺陷);既往CAR-T治疗;既往实体器官移植。 • 筛选前2周内需静脉抗生素治疗的未控制全身感染(病毒、细菌或真菌);已知HIV或HTLV-I/II感染;既往结核病;恰加斯病血清学阳性。 • 活动/持续性乙肝或丙肝:HBsAg阳性者排除;抗HBc阳性且HBsAg阴性者随机前须进行HBV PCR,PCR阳性者排除。丙肝抗体阳性者如研究入组前HCV RNA阴性可入组;HCV RNA阳性者排除。 • 有症状的CNS疾病史,或过去1年内需治疗的CNS疾病史,如卒中、癫痫、CNS血管炎或神经退行性疾病。 • 显著心血管病:NYHA心衰≥III级、心肌梗死史、未控制或有症状的心律失常,或筛选前6个月内不稳定型心绞痛。 • 慢性肺病伴低氧血症(室内空气下脉搏血氧>93%;原登记将此阈值与低氧血症并列)或筛选前4周内未控制。 • 过去2年内有自身免疫病并伴终末器官损伤,或需全身免疫抑制/全身改善病情药物治疗。稳定剂量甲状腺激素替代治疗的甲状腺功能减退者可能符合条件;胰岛素治疗且控制良好的1型糖尿病者可入组。 • 筛选前6个月内有深静脉血栓或肺栓塞史,或筛选时因其他原因需全身抗凝。 • 筛选前4周内接受重大手术;有噬血细胞性淋巴组织细胞增多症(HLH)史或疑似HLH;筛选前1个月内接种活疫苗或减毒活疫苗;对研究治疗任何成分有已知超敏反应(包括过敏性反应)。 • 妊娠、哺乳,或计划在研究期间/ CAR-T输注后12个月内怀孕。有生育能力女性须在输注前7天内血清妊娠试验阴性;有生育能力女性及所有男性受试者须愿意按方案要求在CAR-T输注后12个月采取屏障及高效避孕措施。 • 研究者认为可能干扰研究安全性或疗效评价的其他疾病;研究者评估预期寿命<12周。 B-NHL额外排除标准 • 活动性CNS受累(影像学或脑脊液细胞学/免疫表型检测发现);原发性CNS淋巴瘤(PCNSL);原发性纵隔大B细胞淋巴瘤(PMBCL)。 B-ALL额外排除标准 • 孤立性髓外病变。 • 活动性急性或慢性移植物抗宿主病(GVHD),或筛选前12周内曾需免疫抑制剂控制。 • 含抗CD19抗体的治疗(如Blinatumomab)后仍未达到血液学完全缓解(形态学骨髓原始淋巴细胞<5%)。 • 活动性CNS受累(NCCN指南定义CNS-3),并在筛选前30天内脑脊液细胞学/免疫表型证实。筛选前30天内CNS-1或CNS-2者可入组。 • Burkitt白血病/淋巴瘤。
Inclusion Criteria: For non-Hodgkin Lymphomas (B-NHL): * Provision of signed Informed Consent form; * Age between 18 and 70 years; * Performance status according to the Eastern Cooperative Oncology Group \< 2; * Relapsed or refractory B-NHL of the following types (confirmed by biopsy): * Diffuse large B-cell lymphoma (DLBCL, NOS); * High-grade B-cell lymphoma (HGBCL); * Diffuse large B-cell lymphoma/high-grade B-cell lymphoma with MYC and BCL-2 rearrangement; * Follicular lymphoma (FL) grade 3B; or * Transformed follicular lymphoma (tFL) * Refractory or relapsed to two or more lines of systemic therapy, with at least one scheme containing an anti-CD20 monoclonal antibody and anthracycline, as defined below: * Refractoriness: partial response (PR), stable disease (SD), or progressive disease (PD) as the best response to the last treatment, assessed by PET-CT, according to the Lugano criteria and confirmed by a new biopsy. * Relapsed disease: disease reappearance after obtaining a complete response to the last treatment, assessed by PET-CT, according to the Lugano criteria and confirmed by a new biopsy. * Have performed, or be ineligible for, autologous hematopoietic progenitor cell transplantation (ASCT). Ineligibility is defined by: * Lack of at least partial response after salvage chemotherapy; or * Failure to mobilize and/or collect hematopoietic progenitor cells (HPC), as defined by the investigator. * Measurable disease, defined as: * Nodal lesions \>15 mm in the long axis, regardless of the length of the short axis, and/or * Extranodal lesions (outside lymph node or nodal mass, but including liver and spleen) \>10 mm in long axis, regardless of the length of the short axis. * Adequate organ function: Renal function defined as: * estimated glomerular filtration rate (eGFR) ≥ 40 mL/min/1.73 m2 Hepatic function defined as: * Alanine Transaminase (ALT) and Aspartate Transaminase (AST) ≤ 2.5 × ULN; and * Total bilirubin ≤ 1.5 × ULN, except for patients with Gilbert syndrome. Hematologic Function (regardless of transfusions for 14 days) defined as: * Absolute neutrophil count (ANC) \>500/uL * Platelets ≥ 50,000/uL * Hemoglobin \>7.0 g/dl * In women of childbearing potential, willingness to use effective means of birth control for 1 year after CAR-T cell infusion. * In male participants, willingness to use a barrier birth control method for 1 year after CAR-T cell infusion * Able to comply with inpatient treatment, outpatient treatment, laboratory monitoring, and required clinic visits for the duration of study participation. For Acute Lymphoblastic Leukemia (B-ALL): * Provision of signed Informed Consent form; * Age ≥ 3 and \< 25 years; * Performance status \< 2, according to the Eastern Cooperative Oncology Group for patients ≥ 16 years old, or ≥ 50%, according to the Lansky performance status for patients younger than 16 years old; * Relapsed or refractory CD19 positive B-ALL, with documentation of CD19 disease expression within 3 months of screening visit. * Relapsed or refractory disease as defined below; * Failure to obtain hematologic complete remission (bone marrow with \< 5% lymphoblasts by morphologic assessment) after 2 distinct chemotherapy lines; or * Relapsed or refractoriness after at least 1 previous chemotherapy regimen and ineligibility for allogeneic hematopoietic progenitor cell transplantation (HSCT) due to lack of available donor (including alternative donors), comorbidity, have previously undergone or refused HSCT; or * Relapsed disease ≥ 6 months after HSCT; or * Relapsed or refractoriness after ≥ TKi for Philadelphia-positive B-ALL. * Bone marrow with ≥ 5% lymphoblasts by morphologic assessment within 30 days from screening * Adequate organ function: Renal function defined as: * Estimated glomerular filtration rate (eGFR) ≥ 40 mL/min/1.73 m2 Hepatic function defined as: * Alanine Transaminase (ALT) and Aspartate Transaminase (AST) ≤ 5 × ULN; and * Total bilirubin ≤ 2 × ULN, except for patients with Gilbert syndrome. * In women of childbearing potential, willingness to use effective means of birth control for 1 year after CAR-T cell infusion. * In male participants, willingness to use a barrier birth control method for 1 year after CAR-T cell infusion * Able to comply with outpatient treatment, laboratory monitoring, and required clinic visits for the duration of study participation. duration of the parent study and the long-term follow-up observational study Exclusion Criteria: For non-Hodgkin Lymphomas (B-NHL): * Previous or concurrent cancer distinct from B-NHL within 2 years before screening, except for the following: * Curatively treated nonmelanomatous skin cancer; * Curatively treated cervical carcinoma in situ; * Localized breast cancer treated with curative intent with no evidence of active disease; or * Localized prostate cancer undergoing active surveillance or anti-androgenic therapy, without evidence of metastatic disease. * Syndromes and/or genetic diseases with impact on the hematopoietic system, including Down's syndrome, Fanconi anemia, telomeropathies, Li Fraumeni, Blackfan-Diamond anemia, or congenital immunodeficiencies; * History of previous CAR-T therapy; * History of previous solid organ transplantation; * Active central nervous system (CNS) involvement by disease, detected by image or cytology/immunophenotyping of cerebrospinal fluid (CSF); * Primary central nervous system lymphoma (PCNSL); * Primary mediastinal large B cell lymphoma (PMBCL); * Evidence of uncontrolled systemic infection (viral, bacterial, or fungal) which requires IV antibiotics, within 2 weeks before the screening visit; * Known HIV infection; * Known HTLV I and II infection; * History of previous tuberculosis; * Positive Chagas disease serology; * Hepatitis B or hepatitis C testing indicating active/ongoing infection, as defined as: * HBV: Patients with positive HBsAg are excluded. Patients with positive anti-HBc and negative HBsAg require hepatitis B PCR evaluation before randomization. Patients who are hepatitis B PCR-positive will be excluded. * HCV: Patients with positive hepatitis C antibody may be enrolled with a negative result for hepatitis C RNA before study inclusion. Patients who are hepatitis C RNA-positive will be excluded. * History of a symptomatic CNS disease (or which required treatment within the past year), such as stroke, epilepsy, CNS vasculitis, or neurodegenerative disease; * Significant cardiovascular disease defined as ≥ grade 3 New York Heart Association functional classification system of heart failure, history of myocardial infarction, uncontrolled or symptomatic arrhythmias, or unstable angina within the past 6 months before the screening; * Chronic lung disease, with hypoxemia (Oxygen saturation measured by pulse oximetry \> 93% on room air), or uncontrolled within 4 weeks before the screening visit * History of an autoimmune disease (including, but not limited to, myasthenia gravis, myositis, autoimmune hepatitis, systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, vascular thrombosis associated with antiphospholipid syndrome, Wegener's granulomatosis, Sjögren's syndrome, Guillain-Barré syndrome, multiple sclerosis, vasculitis, or glomerulonephritis) with end-organ damage or requiring systemic immunosuppression/systemic disease-modifying agents in the 2 years preceding the screening visit; * Participants with hypothyroidism receiving a stable dose of thyroid replacement hormone may be eligible. * Participants with controlled type 1 diabetes mellitus who are on an insulin regimen are eligible for the study. * History of deep vein thrombosis or pulmonary embolism within 6 months before the screening visit, or need to use systemic anticoagulation at the time of screening for any other reason; * Major surgery within 4 weeks of the screening visit; * History or suspicion of hemophagocytic lymphohistiocytosis (HLH); * Vaccination with a live or attenuated virus vaccine within one month before the screening visit; * Patients with known hypersensitivity, including anaphylaxis, to any component of the investigational treatment; * Pregnancy, lactation, or plan to get pregnant during the study or within 12 months after CAR-T cell infusion; * In women of childbearing potential a negative serologic pregnancy test must be obtained 7 days before CAR-T cell infusion; * Women of childbearing potential, and all male participants, must be willing to observe barrier and highly effective birth control methods (outlined in the study protocol) for 12 months following CAR-T cell infusion; * Presence of any other medical condition that in the investigator's opinion may interfere with the safety or effectiveness evaluation of the study; * Life expectancy less than 12 weeks, by investigator assessment. For Acute Lymphoblastic Leukemia (B-ALL):: * Previous or concurrent cancer distinct from B-NHL within 2 years before screening, except for the following: * Curatively treated nonmelanomatous skin cancer; * Curatively treated cervical carcinoma in situ; * Localized breast cancer treated with curative intent with no evidence of active disease; or * Localized prostate cancer undergoing active surveillance or anti-androgenic therapy, without evidence of metastatic disease. * Syndromes and/or genetic diseases with impact on the hematopoietic system, including Down's syndrome, Fanconi anemia, telomeropathies, Li Fraumeni, Blackfan-Diamond anemia, or congenital immunodeficiencies; * Isolated extramedullary disease; * Active central nervous system (CNS) involvement by disease (CNS-3 according to NCCN guideline), detected by cytology/immunophenotyping of cerebrospinal fluid (CSF) within 30 days from screening visit. * Patients with CNS-1 and CNS-2 within 30 days from screening visit may be enrolled; * Burkitt's Leukemia/Lymphoma * Active acute or chronic graft-versus-host disease (GvHD), or controlled with immunosuppressants in the previous 12 weeks before the screening visit; * Failure to obtain hematologic complete remission (bone marrow with \< 5% lymphoblasts by morphologic assessment) after an anti-CD19 antibody-containing treatment (e.g. Blinatumomab); * History of previous CAR-T therapy; * History of previous solid organ transplantation; * Evidence of uncontrolled systemic infection (viral, bacterial, or fungal) which requires IV antibiotics, within 2 weeks before the screening visit; * Known HIV infection; * Known HTLV I and II infection; * History of previous tuberculosis; * Positive Chagas' disease serology; * Hepatitis B or hepatitis C testing indicating active/ongoing infection, as defined as: * HBV: Patients with positive HBsAg are excluded. Patients with positive anti-HBc and negative HBsAg require hepatitis B PCR evaluation before randomization. Patients who are hepatitis B PCR-positive will be excluded. * HCV: Patients with positive hepatitis C antibody may be enrolled with a negative result for hepatitis C RNA before study inclusion. Patients who are hepatitis C RNA-positive will be excluded. * History of a symptomatic CNS disease (or which required treatment within the past year), such as stroke, epilepsy, CNS vasculitis, or neurodegenerative disease; * Significant cardiovascular disease defined as ≥ grade 3 New York Heart Association functional classification system of heart failure, history of myocardial infarction, uncontrolled or symptomatic arrhythmias, or unstable angina within the past 6 months before the screening; * Chronic lung disease, with hypoxemia (Oxygen saturation measured by pulse oximetry \> 93% on room air), or uncontrolled within 4 weeks before the screening visit * History of an autoimmune disease (including, but not limited to, myasthenia gravis, myositis, autoimmune hepatitis, systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, vascular thrombosis associated with antiphospholipid syndrome, Wegener's granulomatosis, Sjögren's syndrome, Guillain-Barré syndrome, multiple sclerosis, vasculitis, or glomerulonephritis) with end-organ damage or requiring systemic immunosuppression/systemic disease-modifying agents in the 2 years preceding the screening visit; * Participants with hypothyroidism receiving a stable dose of thyroid replacement hormone may be eligible. * Participants with controlled type 1 diabetes mellitus who are on an insulin regimen are eligible for the study. * History of deep vein thrombosis or pulmonary embolism within 6 months before the screening visit, or need to use systemic anticoagulation at the time of screening for any other reason; * Major surgery within 4 weeks of the screening visit; * History or suspicion of hemophagocytic lymphohistiocytosis (HLH); * Vaccination with a live or attenuated virus vaccine within one month before the screening visit; * Patients with known hypersensitivity, including anaphylaxis, to any component of the investigational treatment; * Pregnancy, lactation, or plan to get pregnant during the study or within 12 months after CAR-T cell infusion; * In women of childbearing potential a negative serologic pregnancy test must be obtained 7 days before CAR-T cell infusion; * Women of childbearing potential, and all male participants, must be willing to observe barrier and highly effective birth control methods (outlined in the study protocol) for 12 months following CAR-T cell infusion; * Presence of any other medical condition that in the investigator's opinion may interfere with the safety or effectiveness evaluation of the study; * Life expectancy less than 12 weeks, by investigator assessment.
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:Safety: Number of participants who experience early adverse events. · To evaluate the occurrence of early adverse events related to the study treatment, from inclusion until 30 days after CAR-T cell infusion. · From patient's inclusion until 30 days after CAR-T cell infusion;Safety: Number of participants who experience late adverse events. · To evaluate the occurrence of early adverse events related to the study treatment, from week 5 to week 52. · From week 5 to week 52
次要终点:Efficacy: Overall Response Rate (ORR);Efficacy: Event Free Survival (EFS);Efficacy: Relapse Free Survival (RFS);Efficacy: Overall Survival (EFS)
淋巴清除后,单次静脉输注学术机构本地制备的自体CD19靶向CAR-T细胞。
这是一项前瞻性、多中心、单臂I/II期临床试验,旨在评估巴西学术机构本地制备的新型CD19靶向CAR-T细胞治疗难治/复发性急性淋巴细胞白血病或非霍奇金淋巴瘤的安全性和疗效。受试者将单次静脉输注自体学术机构制备的抗CD19 CAR-T细胞,并随访5年。
The goal of this prospective, multicentric, single-arm, phase I/II clinical trial is to evaluate the safety and efficacy of a novel CD19-directed CAR-T cell locally produced in an academic institution in Brazil in patients with refractory or relapsed acute lymphoblastic leukemia or non-Hodgkin lymphoma. Participants will receive a single intravenous infusion of an autologous academic anti-CD19 CAR-T cell and will be followed for 5 years.
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