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:Gene Therapy in Treating Patients With Human Immunodeficiency Virus-Related Lymphoma Receiving Stem Cell Transplant
这项I/II期研究评估基因治疗用于接受造血干细胞移植的HIV相关淋巴瘤患者时的副作用和最佳剂量。研究在实验室中将称为“抗HIV基因”的短段DNA导入造血干细胞,以制备用于治疗的细胞产品。这些基因和治疗可能提高患者免疫细胞对HIV-1的抵抗力,并减少新生免疫细胞感染HIV-1。
不限性别 · ≥ 18 Years
纳入标准(淋巴瘤类型及状态,须符合以下一项;除另有说明外,须在筛选阶段入组前8个月内满足): • 活检证实为中度或高度恶性非霍奇金淋巴瘤,并符合以下任一情况:部分缓解;首次完全缓解后复发;诱导治疗失败但对挽救治疗有应答(即疾病对化疗敏感);或虽处于完全缓解,但具有国际预后指数规定的高危特征。 • 活检证实为晚期滤泡性淋巴瘤,至少两线多药联合化疗失败,但对挽救治疗有应答(即疾病对化疗敏感)。 • 活检证实为晚期套细胞淋巴瘤,Ki-67>10%,且处于首次完全缓解。 • 活检证实为霍奇金淋巴瘤,并符合以下任一情况:首次完全缓解后首次或再次复发;部分缓解;或诱导治疗失败但对挽救治疗有应答(即疾病对化疗敏感)。 • 活检证实为伯基特淋巴瘤,并符合以下任一情况:首次完全缓解后复发,目前处于第二次完全缓解;或诱导治疗失败,但对挽救治疗有应答(非常好的部分缓解、完全缓解或接近完全缓解)。 • 活检证实为浆母细胞淋巴瘤或外周T细胞淋巴瘤(首次或第二次完全缓解期的ALK阳性类型除外)。以下患者不受上述8个月时间限制,也不需要再次活检:最近一次活检证实的病灶从未达到完全缓解,患者随后接受下一线治疗并达到完全缓解;或患者快速复发(末次化疗后3个月内),并在挽救治疗后达到完全缓解。 纳入标准(HIV-1状态): • 有HIV-1感染的记录,可依据筛选时配合进行的、经联邦批准并获许可的HIV快速检测(或ELISA试剂盒并经蛋白印迹或其他认可检测确认)。也可提供其他医师记录,证明其依据认可的诊断检测确认受试者HIV状态,或转诊医师的书面记录证明HIV感染,并附有受试者相关病史和/或当前HIV管理情况。 • 正在接受多药抗HIV方案,但不得使用齐多夫定(AZT、ZDV、Retrovir®及含齐多夫定的药物,如Combivir®、Trizivir®)或依法韦仑(Sustiva®及含依法韦仑的药物,如Atripla®)。使用上述药物者须根据已知病毒耐药模式和/或抗逆转录病毒治疗(ART)史,至少在移植前2周换用预计无药物相互作用或骨髓抑制作用的替代方案,例如拉替拉韦联合Truvada(恩曲他滨和替诺福韦)。 • 正在服用ART的受试者还须符合以下一项: – HIV病毒载量检测不到(<50 copies/mL)。过去6个月内曾有病毒载量阴性结果,且已知过去6个月内无病毒载量>500 copies/mL者,可接受偶发的小幅波动(单次升高至500 copies/mL)。既往病毒载量阴性可由近期实验室结果和/或HIV专科医护人员记录证明。 – 若可检出病毒载量但<2,000 copies/mL,须审阅既往抗逆转录病毒方案或既往基因型/表型检测结果,以确认可通过加入敏感药物充分抑制病毒。该审阅由方案感染病团队或负责患者诊治的感染病专科医师完成。 – 若可检出病毒载量≥2,000 copies/mL,须取得当前HIV基因型和/或表型结果。若结合基因型及既往抗逆转录病毒治疗经历,可确定病毒对某一高效抗逆转录病毒治疗(HAART)方案敏感,则此项可视为符合。该审阅由方案感染病团队或负责患者诊治的感染病专科医师完成。 一般纳入标准(除另有说明外,须在筛选阶段入组前8周内满足): • Karnofsky体能状态评分70–100%,ECOG体能状态评分<2。 • SGOT(AST)及SGPT(ALT)≤正常值上限(ULN)的2.5倍。血清胆红素≤ULN的2.5倍;使用阿扎那韦或茚地那韦者,或因胆红素结合异常(如Gilbert病)导致间接胆红素升高者除外,但其直接胆红素须在本机构正常范围内。 • 丙型肝炎病毒抗体阳性或乙肝表面抗原阳性的受试者,经主要研究者与本机构胃肠病科会诊判定,不得有肝硬化的临床证据。 • 乙肝患者在移植时须接受适当的抗病毒治疗,且病毒载量应为阴性。 • 血清肌酐≤ULN的2倍。 • 按修订版Cockcroft-Gault公式计算的肌酐清除率≥60 mL/min。 • 凝血酶原时间(PT)/部分凝血活酶时间(PTT)≤ULN的2倍,或国际标准化比值(INR)/PTT≤ULN的2倍。 • 第一秒用力呼气容积(FEV-1)或经血红蛋白校正的一氧化碳弥散量(DLCO)≥预计值的50%。 • 经二维超声心动图或多门控采集(MUGA)扫描测得左心室射血分数(LVEF)≥50%。 • 不得妊娠或哺乳,且血清妊娠试验阴性。因预处理方案可能导致致畸或流产,妊娠女性不得参加。BEAM方案治疗母亲后对哺乳婴儿的风险尚不明确但可能存在,因此须停止哺乳;本研究使用的其他药物也可能存在这些风险。 • 同意采取有效避孕措施,并在研究期间及移植后3个月内至少使用一种避孕方法。 • 年龄≥18岁(研究中心均为成人移植中心)。 • 预期寿命>3个月。 • 能够理解并愿意签署书面知情同意书。 • 入组前至少3周一直接受稳定的ART方案。 排除标准:不符合上述标准者不得入组;此外,以下排除条件(除另有说明外,须在筛选阶段入组前8周内评估)也会导致排除: • 采集造血干细胞前,骨髓恶性细胞受累>5%(人工计数或流式细胞术检测)。 • 骨髓细胞遗传学存在与淋巴瘤无关、且不属于先天性改变的异常。 • 不明原因的贫血和/或血小板减少。 • 骨髓有明确的骨髓增殖性疾病或骨髓增生异常性疾病证据。 • 评估时存在任何活动性中枢神经系统疾病(脑实质或软脑膜受累)。 • 有HIV-1相关脑病史。 • CD4计数持续低于200,且筛选前6个月内曾发生艾滋病定义性机会性感染。 • 有症状或活动性细菌、真菌感染或其他机会性感染。 • 活动性巨细胞病毒(CMV)视网膜炎或其他活动性CMV相关器官功能障碍。 • 入组前1年内肺孢子菌肺炎复发。 • 顽固性严重腹泻,定义为每日腹泻液量>1,500 cc,或腹泻导致持续严重电解质异常或低白蛋白血症。 • 入组前6个月内有活动性心肌缺血、心肌病、未控制的心律失常或充血性心力衰竭。 • 任何类型的痴呆。 • 入组前12个月内发生癫痫发作。 • 既往接受环磷酰胺化疗后发生过III级出血性膀胱炎。 • 有其他恶性肿瘤史,但宫颈或肛门鳞状细胞癌、浅表性基底细胞癌或皮肤鳞状细胞癌,以及入组前5年以上已治愈的其他恶性肿瘤除外。 • 存在可能妨碍遵守研究要求及随访的活动性心理社会问题。 • 研究者认为受试者无法在不依赖法定监护人的情况下直接提供知情同意。 • 存在医学或身体方面的禁忌,或其他无法进行造血祖细胞(HPC)采集的情况。 • 正在接受其他研究性药物。 • 存在未控制的合并疾病,包括但不限于持续或活动性感染、有症状的充血性心力衰竭、不稳定型心绞痛、心律失常,或会限制其遵守研究要求的精神疾病/社会情境。
Inclusion Criteria
* Inclusion criteria associated with type and status of lymphoma, one of the following must be applicable:
* Biopsy-proven intermediate or high-grade non-Hodgkin's lymphoma, meeting one of the following criteria (timeline 8 months prior to enrollment in the screening segment):
\- In partial remission,
\- Relapsed after initial complete remission,
\- Failed induction therapy, but responds to salvage therapy (i.e., chemosensitive disease),
\- In complete remission with high-risk features as specified by the International Prognostic Index.
* Biopsy-proven advanced stage follicular lymphoma, that have failed at least two lines of therapy multi-agent chemotherapy, but responds to salvage therapy i.e.,chemosensitive disease) (timeline 8 months prior to enrollment in the screening segment).
* Biopsy-proven advanced stage Mantle cell lymphoma with Ki-67 \> 10% in first complete remission (timeline 8 months prior to enrollment in the screening segment).
* Biopsy-proven Hodgkin's lymphoma, meeting one of the following criteria (timeline 8 months prior to enrollment).
\- In first, or greater relapse after initial complete remission,
\- In partial remission,
\- Failed induction therapy, but responds to salvage therapy (i.e., chemosensitive disease).
* Biopsy-proven Burkitt's lymphoma, meeting one of the following criteria (timeline 8 months prior to enrollment):
\- In second complete remission after relapse following initial complete remission,
\- Failed induction therapy, but responds (very good partial remission, complete remission, or near complete remission) to salvage therapy (i.e., chemosensitive disease).
* Biopsy proven plasmablastic lymphomas, or peripheral T cell lymphoma (with the exception of ALK+ type in first or second complete remission) \*NOTE: Patients meeting the following criteria are exempt from the 8-month timeline and do not require additional biopsy:
* Patients who have never achieved a complete remission on the last biopsy-proven site of disease and went on to the next therapy then achieved a complete remission.
* Patients who relapsed quickly (within 3 months of their last chemotherapy) and now have achieved a complete remission with salvage therapy.
* Inclusion criteria associated with HIV-1 status
* HIV-1 infection, as documented by any federally approved, licensed HIV rapid test performed in conjunction with screening (or ELISA, test kit, and confirmed by Western blot or other approved test). Alternatively, this documentation may include a record demonstrating that another physician has documented the participant's HIV status based on either: 1) approved diagnostic tests, or 2) the referring physician's written record that HIV infection was documented, with supporting information on the participant's relevant medical history and/or current management of HIV infection.
* Must be on a multi-drug anti-HIV regimen (excluding zidovudine \[AZT, ZDV, Retrovir®, or agents containing zidovudine (e.g., Combivir® and Trizivir®)\], and efavirenz \[Sustiva®, or agents containing efavirenz (e.g., Atripla®)\]).
Participants on zidovudine \[AZT, ZDV, Retrovir®; including Combivir® and Trizivir®\] and efavirenz \[Sustiva®; including Atripla®\] must switch to an alternative regimen without anticipated drug-drug interactions or myelosuppressive properties based on known viral resistance patterns and/or ART history, such as raltegravir and Truvada (emtricitabine and tenofovir) at least two weeks prior to the transplant.
o Participant taking ARTs must satisfy one of the following:
* Undetectable HIV viral load (\< 50 copies/mL). For patients who have had negative viral loads in the past 6 months and no known HIV viral load \>500 copies/mL within the last 6 months, minor fluctuations of viral load (isolated escalations up to 500 copies/mL) are acceptable. The participant's history of negative viral loads may be documented with recent laboratory results and/or a record from the participant's HIV care provider.
* If viral load is detectable at \< 2000 copies/mL a review of previous antiretroviral regimens or previous genotypic or phenotypic testing which indicate the ability to fully suppress virus by addition of sensitive drugs must be performed. This review will be carried out by the protocol ID team or the ID specialist caring for the patient.
* If viral load is detectable at ≥ 2000 copies/mL, a current HIV genotype and/or phenotype must be obtained. If a HAART regimen to which the patient's virus is sensitive can be determined based on genotype and previous antiretroviral experience, then the patient will be considered eligible in this regard. This review will be carried out by the protocol ID team or the ID specialist caring for the patient.
General Inclusion Criteria (timeline: within 8 weeks prior to enrollment in the screening segment, unless otherwise specified)
* Karnofsky performance status of 70-100%. ECOG performance status \<2
* SGOT and SGPT ≤ 2.5 times upper limit of normal (ULN). Serum bilirubin ≤ 2.5 times ULN except for participants who are on atazanavir or indinavir, or with elevated indirect bilirubin related to bilirubin conjugation issues such as Gilbert's disease, provided that the participant's direct bilirubin is within normal institutional limits.
* Participants who are hepatitis C virus antibody positive, or hepatitis B virus surface antigen positive must be free of clinical evidence of cirrhosis as determined by the principal investigator in consultation with the institutional Gastroenterology Service.
* Participants with Hepatitis B should be on appropriate anti-viral therapy at the time of the transplant, and their viral load should be negative.
* Serum creatinine ≤ 2 times ULN.
* Creatinine clearance ≥ 60 mL/min by the modified Cockcroft-Gault Formula.
* PT/PTT ≤ 2 times upper limit of normal (ULN), or international normalized ratio (INR)/PTT ≤ 2 times the ULN.
* FEV-1 or DLCO (corrected for hemoglobin) ≥ 50% predicted.
* LVEF ≥ 50% by 2D ECHO or MUGA scan.
* Not pregnant or nursing, with negative serum pregnancy test. Pregnant women are excluded from this study because the conditioning regimen has the potential for teratogenic or abortifacient effects. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with BEAM, breastfeeding should be discontinued. These potential risks may also apply to other agents used in this study.
* Participants should agree to practice effective contraceptive precautions and to use at least one method of contraception for the duration of the study and for 3 months post-transplant.
* Age ≥18 years. Because only adult transplant centers are participating as study sites.
* Life expectancy of greater than 3 months.
* Ability to understand and the willingness to sign a written informed consent document.
* Receipt of a stable ART regimen for at least 3 weeks prior to enrollment.
Exclusion Criteria
Participants who do not fulfill the criteria as listed above, are ineligible. Additionally, the presence of any of the following conditions will exclude a participant from study enrollment (timeline for all the exclusion criteria is within 8 weeks prior to enrollment in the screening segment):
* Participants with \> 5% involvement of bone marrow by malignant cells (either by manual count or flow cytometry) prior to stem cell collection.
* Participants with any abnormal cytogenetics in the bone marrow not related to the lymphoma, and not deemed to be constitutional.
* Participants with unexplained anemia and/or thrombocytopenia.
* Participants with clear evidence of myeloproliferative disorders, or myelodysplastic disorders in the marrow.
* Presence of any active CNS disease at the time of evaluation (parenchymal or leptomeningeal).
* Any history of HIV-1 associated encephalopathy.
* Participants with persistently low CD4 counts less than 200 and a history of any AIDS-defining infection in the last 6 months before screening are excluded from the study.
* Symptomatic/active bacterial, or fungal, or any other opportunistic infection.
* Active CMV retinitis, or other active CMV-related organ dysfunction.
* Relapse of pneumocystis carinii pneumonia within the past year before enrollment.
* Intractable, severe diarrhea, defined as \> 1.500 cc diarrheal fluid per day, or diarrhea causing persistent severe electrolyte abnormalities, or hypoalbuminemia.
* History of active myocardial ischemia, cardiomyopathy, uncontrolled dysrhythmia, or congestive heart failure within the last 6 months before enrollment.
* Dementia of any kind.
* Seizures within the past 12 months before enrollment.
* History of Grade III hemorrhagic cystitis due to prior cyclophosphamide chemotherapy.
* History of other prior malignancy, except squamous cell carcinoma of the cervix or anus, superficial basal cell or squamous cell skin cancer, or other malignancy curatively treated more than 5 years ago before enrollment.
* Active psychosocial condition that would hinder study compliance and follow-up.
* Any perceived inability to directly (and without the means of a legal guardian) provide informed consent.
* Any medical or physical contraindication, or other inability to undergo HPC collection.
* Participants who are receiving any other investigational agents.
* Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements.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:Percentage of Participants Who Achieve a Timely Engraftment · Timely engraftment is defined as a persistent an absolute neutrophil count (ANC) of at least 500 cells/mm3 and a platelet count of at least 20,000 cells/mm3 for at least 3 days · 1 month post-transplant
次要终点:Proportion of Study Participants Who Achieve Greater Than 5% Mononuclear Blood Cells Expressing Anti-HIV Genes in Peripheral Blood;Proportion of Study Participants With Gene Modified HIV-1 Resistant Peripheral Blood Cells and Gut Mucosal Immune Cells;Quantity of Gene Modified HIV-1 Resistant Peripheral Blood Cells and Gut Mucosal Immune Cells;Integration Sites of Vector Sequences in Circulating Cells;Progression-free Survival;Overall Survival;Number of Participants With a Complete Response;Number of Days From the First Documentation of a Complete Response Until the First Day of Relapse
患者接受标准治疗方案BEAM:第-6天给予卡莫司汀;第-5至-2天每日两次给予阿糖胞苷和依托泊苷;第-1天给予美法仑。随后在1小时内输注经慢病毒载体CCR5 shRNA/TRIM5α/TAR诱饵序列转导的自体CD34阳性造血祖细胞。
这项I/II期临床试验研究基因治疗用于接受造血干细胞移植的HIV相关淋巴瘤患者时的副作用和最佳剂量。基因治疗过程中,研究人员在实验室将称为“抗HIV基因”的短段脱氧核糖核酸(DNA)导入造血干细胞,制成本研究使用的基因治疗产品。这些抗HIV基因和治疗可能使患者免疫细胞更能抵抗HIV-1,并防止新生免疫细胞感染HIV-1。
This phase I/II trial studies the side effects and best dose of gene therapy in treating patients with human immunodeficiency virus (HIV)-related lymphoma that did not respond to therapy or came back after an original response receiving stem cell transplant. In gene therapy, small stretches of deoxyribonucleic acid (DNA) called "anti-HIV genes" are introduced into the stem cells in the laboratory to make the gene therapy product used in this study. The type of anti-HIV genes and therapy in this study may make the patient's immune cells more resistant to HIV-1 and prevent new immune cells from getting infected with HIV-1.
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