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:Intracranial Genetically Modified Immune Cells (TGFβR2KO/IL13Rα2 CAR T-Cells) for the Treatment of Recurrent or Progressive Glioblastoma or Grade 3 or 4 IDH-Mutant Astrocytoma
这是一项 I 期注册临床试验,评估 CAR-T 细胞治疗胶质瘤、胶质母细胞瘤的安全性、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 · 杜阿尔特(共 1 个中心)。登记号:NCT06815029。
不限性别 · ≥ 18 Years
纳入标准: * 受试者和/或合法授权代表签署知情同意书 * 注:对于不讲英语的研究受试者,在翻译版主知情同意书处理期间,可使用简式知情同意书,由希望之城(COH)认证的口译员/翻译员协助进行筛选和白细胞单采。但是,研究受试者只有在签署翻译版主知情同意书后,才可进行手术/Rickham置管和CAR T细胞输注 * 同意使用诊断性肿瘤活检的存档组织。如无法获得,经研究主要研究者(PI)批准可予例外 * 年龄:≥ 18岁 * Karnofsky体能状态评分(KPS)≥ 70%,美国东部肿瘤协作组(ECOG)≤ 2 * 预期寿命 ≥ 4周 * 如果受试者带有分流管,必须告知其以下内容: * 如果分流管不可调压,受试者必须愿意在CAR T细胞输注前放置可调压分流管,并且 * 如果分流管可调压,为了进入研究的治疗部分,受试者必须能够耐受其分流管功能性关闭至少2小时 * 受试者既往经组织学确诊为3级或4级IDH突变型星形细胞瘤或胶质母细胞瘤,或既往经组织学确诊为2级或3级星形细胞瘤且目前影像学进展符合3级或4级IDH突变型星形细胞瘤 * 复发性疾病:标准治疗后影像学证据显示可测量病灶复发/进展,且完成一线放疗后 ≥ 12周 * COH临床病理学通过免疫组织化学确认IL13Rα2+肿瘤表达(H评分 ≥ 80) * 无已知的白细胞单采、类固醇或托珠单抗禁忌症 * 白细胞(WBC)> 2000/dl(或绝对中性粒细胞计数[ANC] ≥ 1,000/mm^3)(除非另有说明,须在白细胞单采前14天内完成) * 血小板 ≥ 75,000/mm^3(除非另有说明,须在白细胞单采前14天内完成) * 血红蛋白 ≥ 8g/dl(除非另有说明,须在白细胞单采前14天内完成) * 总胆红素 ≤ 1.5 x 正常上限(ULN)(除非另有说明,须在白细胞单采前14天内完成) * 天冬氨酸氨基转移酶(AST)≤ 2.5 x ULN(除非另有说明,须在白细胞单采前14天内完成) * 丙氨酸氨基转移酶(ALT)≤ 2.5 x ULN(除非另有说明,须在白细胞单采前14天内完成) * 血清肌酐 ≤ 1.6 mg/dL(除非另有说明,须在白细胞单采前14天内完成) * 室内空气中氧(O2)饱和度 ≥ 95%(除非另有说明,须在白细胞单采前14天内完成) * HIV抗原/抗体(Ag/Ab)联合检测、丙型肝炎病毒(HCV)、活动性乙型肝炎病毒(HBV)(表面抗原阴性)血清学阴性(除非另有说明,否则需在白细胞分离术前14天内进行) * 有生育能力的女性(WOCBP):尿妊娠试验或血清妊娠试验阴性(除非另有说明,否则需在白细胞分离术前14天内进行) * 如果尿妊娠试验阳性或无法确认为阴性,则需要进行血清妊娠试验 * 有生育能力的女性和男性同意在研究期间至方案治疗末次给药后至少3个月内使用有效的避孕方法或避免异性性行为 * 有生育能力定义为未接受手术绝育(男性和女性)或未停经>1年(仅女性) 排除标准: * 由于伤口相关并发症发生率较高,入组时需接受活动性贝伐珠单抗治疗的受试者被排除 * 受试者尚未从既往治疗的毒性中恢复 * 未控制的癫痫发作活动和/或临床明显的进行性脑病 * 对与研究药物具有相似化学或生物学组成的化合物有过敏反应史 * 临床显著的不受控制的疾病 * 需要全身免疫抑制治疗的活动性自身免疫性疾病 * 需要静脉(IV)抗生素治疗的活动性感染(例如,轻微头皮感染不构成排除) * 已知人类免疫缺陷病毒(HIV)或乙型肝炎或丙型肝炎感染史 * 其他活动性恶性肿瘤。注:既往或合并恶性肿瘤但其自然病史或治疗不太可能干扰研究方案安全性或有效性评估的患者有资格参加本试验 * 仅限女性:妊娠或哺乳期 * 研究者判断因临床研究程序的安全性问题而禁忌患者参与临床研究的任何其他情况 * 研究者认为可能无法遵守所有研究程序(包括与可行性/后勤相关的依从性问题)的预期受试者
Inclusion Criteria: * Documented informed consent of the participant and/or legally authorized representative * Note: For research participants who do not speak English, a short form consent may be used with a City of Hope (COH) certified interpreter/translator to proceed with screening and leukapheresis, while the request for a translated main consent is processed. However, the research participant is allowed to proceed with surgery/Rickham placement and CAR T cell infusion only after the translated main consent form is signed * Agreement to allow the use of archival tissue from diagnostic tumor biopsies. If unavailable, exceptions may be granted with study principal investigator (PI) approval * Age: ≥ 18 years * Karnofsky performance status (KPS) ≥ 70%, Eastern Cooperative Oncology Group (ECOG) ≤ 2 * Life expectancy ≥ 4 weeks * If the participant has a shunt, they must be informed of the following: * If the shunt is not programmable, the participant must be willing to have a programmable shunt placed prior to CAR T cell infusion, and * If the shunt is programmable, in order to proceed to the treatment portion of the study, the participant must be able to tolerate their shunt being functionally closed for at least 2 hours * Participant has a prior histologically-confirmed diagnosis of a grade 3 or 4 IDH-mutant astrocytoma or glioblastoma, or has a prior histologically-confirmed diagnosis of a grade 2 or 3 astrocytoma and now has radiographic progression consistent with grade 3 or 4 IDH-mutant astrocytoma * Relapsed disease: radiographic evidence of recurrence/progression of measurable disease after standard therapy, and ≥ 12 weeks after completion of front-line radiation therapy * COH clinical pathology confirms IL13Rα2+ tumor expression by immunohistochemistry (H-score ≥ 80) * No known contraindications to leukapheresis, steroids, or tocilizumab * White blood cell (WBC) \> 2000 /dl (or absolute neutrophil count \[ANC\] ≥ 1,000/mm\^3) (to be performed within 14 days prior to leukapheresis unless otherwise stated) * Platelets ≥ 75,000/mm\^3 (to be performed within 14 days prior to leukapheresis unless otherwise stated) * Hemoglobin ≥ 8g/dl (to be performed within 14 days prior to leukapheresis unless otherwise stated) * Total bilirubin ≤ 1.5 x upper limit of normal (ULN) (to be performed within 14 days prior to leukapheresis unless otherwise stated) * Aspartate aminotransferase (AST) ≤ 2.5 x ULN (to be performed within 14 days prior to leukapheresis unless otherwise stated) * Alanine aminotransferase (ALT) ≤ 2.5 x ULN (to be performed within 14 days prior to leukapheresis unless otherwise stated) * Serum creatinine ≤ 1.6 mg/dL (to be performed within 14 days prior to leukapheresis unless otherwise stated) * Oxygen (O2) saturation ≥ 95% on room air (to be performed within 14 days prior to leukapheresis unless otherwise stated) * Seronegative for HIV antigen/antibody (Ag/Ab) combo, hepatitis C virus (HCV), active hepatitis B virus (HBV) (surface antigen negative) (to be performed within 14 days prior to leukapheresis unless otherwise stated) * Women of childbearing potential (WOCBP): Negative urine or serum pregnancy test (to be performed within 14 days prior to leukapheresis unless otherwise stated) * If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required * Agreement by females and males of childbearing potential to use an effective method of birth control or abstain from heterosexual activity for the course of the study through at least 3 months after the last dose of protocol therapy * Childbearing potential defined as not being surgically sterilized (men and women) or have not been free from menses for \> 1 year (women only) Exclusion Criteria: * Owing to higher frequency of wound-related complications, participants who require active bevacizumab therapy at the time of enrollment are excluded * Participant has not yet recovered from toxicities of prior therapy * Uncontrolled seizure activity and/or clinically evident progressive encephalopathy * History of allergic reactions attributed to compounds of similar chemical or biologic composition to study agent * Clinically significant uncontrolled illness * Active autoimmune disease requiring systemic immunosuppressive therapy * Active infection requiring intravenous (IV) antibiotics (e.g., minor scalp infection is not an exclusion) * Known history of human immunodeficiency virus (HIV) or hepatitis B or hepatitis C infection * Other active malignancy. Note: Patients with a prior or concurrent malignancy whose natural history or treatment does not have the potential to interfere with the safety or efficacy assessment of the investigational regimen are eligible for this trial * Females only: Pregnant or breastfeeding * Any other condition that would, in the investigator's judgment, contraindicate the patient's participation in the clinical study due to safety concerns with clinical study procedures * Prospective participants who, in the opinion of the investigator, may not be able to comply with all study procedures (including compliance issues related to feasibility/logistics)
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:Dose-limiting toxicities (DLTs) · Will be assessed using the Common Terminology Criteria for Adverse Events (CTCAE) version (v) 5.0. Rate and associated 90% Clopper and Pearson binomial confidence limits (90% CI) will be estimated for participants experiencing DLTs at the maximum tolerated dose schedule · Up to 28 days;Incidence of grade 3+ adverse events (AEs) · Will be assessed using the CTCAE v 5.0. Tables will be created to summarize all toxicities and side effects by dose, time post treatment, organ, severity, attributions, and arm. In study participants who received the full schedule of 4 cycles. · Up to 30 days after last dose of study drug;Incidence of cytokine release syndrome · Will be graded using American Society for Transplantation and Cellular Therapy (ASTCT) Consensus Criteria. Tables will be created to summarize all toxicities and side effects by dose, time post treatment, organ, severity, attributions, and arm. In study participants who received the full schedule of 4 cycles. · Up to 30 days after last dose of study drug;Incidence of all other AEs · Will be assessed using the CTCAE v 5.0. Neurotoxicity will be graded using ASTCT Consensus Criteria, Immune Effector Cell-Associated Hemophagocytic Lymphohistiocytosis-Like Syndrome grading system, and tumor inflammation-associated neurotoxicity grading system. Tables will be created to summarize all toxicities and side effects by dose, time post treatment, organ, severity, attributions, and arm. · Up to 30 days after last dose of study drug
次要终点:Overall response rate;Complete response rate;Overall survival (OS);Ability to meet the TGFβR2KO/IL13Rα2-CAR T cell dose requirements (product feasibility);Ability to meet product release requirements (product feasibility);Maximum feasible dose (MFD)
患者接受白细胞分离术和标准治疗手术切除,伴或不伴放置Rickham导管。从第0天开始,患者接受自体TGFβR2KO/IL13Rα2-CAR T细胞颅内输注,约5分钟,每周一次。在无疾病进展或不可接受毒性情况下,周期每周重复,最多4个周期(28天)。如果患者继续符合输注标准且有可用剂量进行输注,可接受额外周期。患者在整个研究期间还接受CSF和血液样本采集以及氟脱氧葡萄糖F-18(FDG)-正电子发射断层扫描(PET)和MRI。此外,患者可能在筛选时接受超声心动图检查。
这项I期试验测试了在颅内给予TGFβR2KO/IL13Rα2嵌合抗原受体(CAR)T细胞治疗胶质母细胞瘤或IDH突变型3级或4级星形细胞瘤患者的安全性、副作用和最佳剂量,这些患者在经过一段改善期后复发(复发性)或肿瘤正在生长、扩散或恶化(进展性)。CAR T细胞疗法是一种治疗方法,其中患者的T细胞(一种免疫系统细胞)在实验室中被改变,以攻击肿瘤细胞。T细胞从患者的血液中提取。当细胞取自患者自身血液时,称为自体。然后,在实验室中将结合患者肿瘤细胞上特定蛋白质的特殊受体基因添加到T细胞中。这些特殊受体称为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肿瘤。给予TGFβR2KO/IL13Rα2 CAR T细胞可能在治疗复发性或进展性胶质母细胞瘤或3级或4级IDH突变型星形细胞瘤患者中是安全、可耐受和/或有效的。
This phase I trial tests the safety, side effects and best dose of TGFβR2KO/IL13Rα2 chimeric antigen receptor (CAR) T-cells given within the skull (intracranial) in treating patients with glioblastoma or IDH-mutant grade 3 or 4 astrocytoma that has come back after a period of improvement (recurrent) or that is growing, spreading, or getting worse (progressive). CAR T-cell therapy 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 tumor cells. T cells are taken from a patient's blood. When the cells are taken from the patient's own blood, it is known as autologous. Then the gene for special receptors that bind to a certain proteins on the patient's tumor cells are added to the T cells in the laboratory. The special receptors are called CAR. Large numbers of the CAR T cells are grown in the laboratory and given to the patient by infusion for treatment of certain tumors. Giving TGFβR2KO/IL13Rα2 CAR T cells may be safe, tolerable, and/or effective in treating patients with recurrent or progressive glioblastoma or grade 3 or 4 IDH-mutant astrocytoma.
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