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KRAS TCR-Transduced PBL(TCR-T 细胞)治疗恶性肿瘤、结直肠癌:I 期临床试验

英文原题:Autologous T-cells Genetically Engineered to Express Receptors Reactive Against KRAS Mutations in Conjunction With a Vaccine Directed Against These Antigens in Participants With Metastatic Cancer

ClinicalTrials.gov 2024/02/12(首次登记) I 期注册临床试验 · 进行中(不再招募)

简要介绍

这是一项 I 期注册临床试验,评估 TCR-T 细胞治疗恶性肿瘤、结直肠癌、乳腺癌的安全性、可行性及初步疗效。当前状态:进行中(不再招募)。计划入组 210 例。试验地点:美国 · 贝塞斯达(共 1 个中心)。登记号:NCT06253520。

入组条件决定能不能参加

不限性别 · ≥ 18 Years 且 ≤ 72 Years

入选标准

• 患者具有与外科分支可用KRAS TCR匹配的HLA型别,患有可评估的转移性实体瘤(如胃肠道、泌尿生殖系统、乳腺、卵巢、非小细胞肺癌及其他实体瘤),且已知存在KRAS G12V或G12D突变。
• 经美国国家癌症研究所(NCI)病理实验室确诊。
• 对标准全身治疗难治,具体要求:转移性结直肠癌患者须接受过奥沙利铂和/或伊立替康;乳腺癌和卵巢癌患者须接受过至少两种全身治疗;NSCLC患者须接受至少一种含铂化疗方案及至少一种FDA批准的靶向治疗(适用时);其他实体瘤患者须接受过至少一线全身治疗,或拒绝标准治疗。允许脑转移≤3个、每个直径<1 cm且无症状者。接受立体定向放射外科治疗的脑病灶须在治疗后临床稳定1个月;脑转移灶经手术切除者也可入组。
• 年龄≥18且≤72岁。
• ECOG体能状态0或1。
• 有生育能力者(IOCBP)须同意从入组时起、研究治疗期间及联合化疗末次给药后12个月采用高效避孕方法(激素避孕、宫内节育器[IUD]、禁欲或手术绝育)。可使他人受孕者须同意研究治疗期间及联合化疗末次给药后4个月采用有效避孕方法(屏障法、手术绝育或禁欲);并建议其有生育能力的伴侣采用高效避孕。IOCBP定义为已初潮、未成功手术绝育且未绝经者。某些恶性肿瘤可分泌激素,导致妊娠试验假阳性;必要时可通过连续血液检测(如HCG)和/或超声进一步确认。
• 病毒学检测:HIV抗体阴性;乙肝表面抗原阴性;HCV抗体阴性。HCV抗体阳性者须进一步进行RT-PCR抗原检测并确认HCV RNA阴性。
• 器官及骨髓功能充分:血液学:无生长因子支持时ANC>1000/mm³;WBC≥2500/mm³;血小板≥80,000/mm³(原登记该阈值前有格式符号缺失);血红蛋白>8.0 g/dL(可输血达到该阈值)。生化:ALT/AST≤5.0×ULN;血清肌酐≤1.6 mg/dL;总胆红素≤2.0 mg/dL,Gilbert综合征者<3.0 mg/dL。
• 入组时已完成任何既往全身治疗。
• 入组前4周内可接受小型手术或有限范围放疗,前提是相关重要器官毒性已恢复至≤1级。
• NSCLC或肺转移患者,在接受预处理方案时,因严重支气管阻塞或出血接受姑息治疗后须已超过2周,且相关毒性已恢复至≤1级。
• 能够理解并愿意签署书面知情同意书。
• 愿意签署持久授权书。
• 须同时参加方案03-C-0277。

排除标准

• 妊娠或哺乳期,因治疗可能对胎儿或婴儿造成危险。
• 任何形式的继发性免疫抑制。
• 活动性全身感染且需抗感染治疗、凝血障碍,或其他活动性/未代偿的重大疾病。
• NSCLC或肺转移患者存在无法姑息处理的重大支气管阻塞或出血。
• 任何形式的原发性免疫缺陷(如严重联合免疫缺陷病或AIDS)。
• 有主要器官自身免疫性疾病史。
• 合并机会性感染(本方案评估的试验治疗依赖完整免疫系统;免疫功能下降可能降低疗效并增加毒性风险)。
• 对环磷酰胺、氟达拉滨、阿地白介素或疫苗有严重速发型超敏反应史。
• 主要研究者认为会影响受试者耐受大剂量阿地白介素的临床重要病史。
• 冠状动脉血运重建史或缺血症状史。
• 因临床病史需接受心脏评估者,最近一次LVEF≤45%。
• 因临床病史需接受肺部评估者,已知FEV1≤预计值的50%。
核对登记原文(英文)
* INCLUSION CRITERIA:
* Participants with an appropriate HLA match for available Surgery Branch KRAS TCRs with evaluable metastatic solid cancer (e.g., gastrointestinal, genitourinary, breast, ovarian, non-small cell lung cancer (NSCLC) and other solid cancers) with known KRAS G12V or G12D mutation.
* Confirmation of diagnosis of cancer by the NCI Laboratory of Pathology.
* Refractory to standard systemic therapy. Specifically:

  * Participants with metastatic colorectal cancer must have received oxaliplatin and/or irinotecan.
  * Participants with breast and ovarian cancer must have received at least two systemic treatments.
  * Participants with NSCLC must have received at least one platinum-based chemotherapy regimen and at least one FDA-approved targeted treatment (when appropriate).
  * Participants with other solid tumors must have received at least one prior line of systemic treatment or have declined standard treatment.
  * Participants with three (3) or fewer brain metastases that are \< 1 cm in diameter each and asymptomatic are eligible. Lesions that have been treated with stereotactic radiosurgery must be clinically stable for one month after treatment for the participant to be eligible. Participants with surgically resected brain metastases are eligible.
* Age \>= 18 years and \<= 72 years.
* Clinical performance status of ECOG 0 or 1.
* Individuals of child-bearing potential (IOCBP) must agree to use highly effective contraception (hormonal, intrauterine device \[IUD, abstinence, surgical sterilization starting at the time of study entry, for the duration of study therapy, and 12 months after the last dose of combined chemotherapy

Participants who can father a child must agree to use an effective method of contraception (barrier, surgical sterilization, abstinence) for the duration of the study treatment and for 4 months after the last dose of combined chemotherapy. We also will recommend participants that can father children with partners of childbearing potential to ask their partners to be on highly effective birth control (hormonal, intrauterine device (IUD), surgical sterilization).

NOTE: IOCBP is defined as any person who has experienced menarche and who has not undergone successful surgical sterilization or who is not postmenopausal.

NOTE: Certain malignancies may secrete hormones that produce false positive pregnancy tests. Serial blood testing (e.g. HCG measurements) and/ or ultrasound may be performed for clarification.

* Participants must have serology results as follows:

  * Seronegative for HIV antibody.
  * Seronegative for hepatitis B antigen, and seronegative for hepatitis C antibody. If hepatitis C antibody test is positive, then participant must be tested for the presence of antigen by RT-PCR and be HCV RNA negative.
* Adequate organ and marrow function as defined below:

  --Hematology:
  * ANC \> 1000/mm\^3 without growth factor support
  * WBC \>= 2500/mm\^3
  * Platelet count (Bullet) 80,000/mm3
  * Hemoglobin \> 8.0 g/dL. Subjects may be transfused to reach this cut-off.
* Chemistry:
* Serum ALT/AST \<= 5.0 x ULN
* Serum creatinine \<= 1.6 mg/dL
* Total bilirubin \<= 2.0 mg/dL, except in participants with Gilbert s Syndrome, who must have a total bilirubin \< 3.0 mg/dL.
* Participants must have completed any prior systemic therapy at the time of enrollment.

NOTE: Participants may have undergone minor surgical procedures or limited field radiotherapy within the four weeks prior to enrollment, as long as related major organ toxicities have recovered to grade 1 or less.

* For participants with NSCLC or lung metastases, more than two weeks must have elapsed since any prior palliation for major bronchial occlusion or bleeding at the time the patient receives the preparative regimen, and patient s toxicities must have recovered to a grade 1 or less.
* Ability of subject to understand and the willingness to sign a written informed consent document.
* Willing to sign a durable power of attorney.
* Participants must be co-enrolled on protocol 03-C-0277.

EXCLUSION CRITERIA:

* Participants who are pregnant or nursing because of the potentially dangerous effects of the treatment on the fetus or infant.
* Any form of secondary immunosuppression.
* Active systemic infections requiring anti-infective treatment, coagulation disorders, or any other active or uncompensated major medical illnesses.
* For participants with NSCLC or lung metastases, any major bronchial occlusion or bleeding not amenable to palliation.
* Any form of primary immunodeficiency (such as Severe Combined Immunodeficiency Disease and AIDS).
* History of major organ autoimmune disease.
* Concurrent opportunistic infections (The experimental treatment being evaluated in this protocol depends on an intact immune system. Participants who have decreased immune-competence may be less responsive to the experimental treatment and more susceptible to its toxicities.)
* History of severe immediate hypersensitivity reaction to cyclophosphamide, fludarabine, aldesleukin or vaccines.
* Clinically significant participant history which in the judgment of the Principal Investigator (PI) would compromise the participants ability to tolerate high-dose aldesleukin.
* History of coronary revascularization or ischemic symptoms.
* For select participants with a clinical history prompting cardiac evaluation: last known LVEF \<= 45%.
* For select participants with a clinical history prompting pulmonary evaluation: known FEV1 \<= 50% predicted.

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。

研究终点衡量什么算有效

  • 主要终点完全缓解(CR)和/或部分缓解(PR)细胞输注后第4、8、12、20周评估,此后每3个月一次共3次,再每6个月一次,最长2年
  • 主要终点安全性从首次给药至末次治疗后4周,记录所有不良事件(按CTCAE v5.0毒性类型和级别)
  • 次要终点安全性
核对登记原文(英文)

主要终点:Complete response (CR) and/ or partial response (PR) · Clinical response rate (\[PR+CR\]/evaluable participants) will be determined and reported along with the corresponding 95% two-sided confidence interval. · Response assessed at 4, 8, 12 and 20 weeks post-cell infusion, every 3 months x3, every 6 months x 2 years;Safety · Safety and tolerability will be analyzed by reporting the number of patients experiencing toxicity, classified by type and grade to the experimental regimen. Adverse events assessed per CTCAE version 5. · All adverse Events (AE) per CTCAE v5.0, by type and grade of toxicity, from first dose through 4 weeks after the last treatment
次要终点:Safety

研究设计怎么做的

研究类型
干预性研究
入组人数
210 人(预计)
分组方式
非随机分组
  • KRAS TCR联合疫苗试验组

    给予非清髓性淋巴清除预处理方案(环磷酰胺和氟达拉滨)+ KRAS TCR转导的外周血淋巴细胞(PBL)+ 大剂量阿地白介素 + 疫苗。疫苗在第0天(细胞输注日)、第4周和第8周接种;如无疾病进展,可于第12周接种。

核对分组登记原文(英文)
  • 1/ KRAS TCR + vaccine · EXPERIMENTAL · Non-myeloablative, lymphodepleting preparative regimen of cyclophosphamide and fludarabine + KRAS TCR-Transduced PBL + high-dose aldesleukin + vaccine (Day 0, weeks 4 and 8 and at week 12 (if no progression)

关键日期

开始日期
2024-05-16
主要完成日期
2029-02-20
全部完成日期
2029-02-20
登记状态核实于
2026-09-18

联系与责任方

申办方
National Cancer Institute (NCI)

登记简述

本研究使用患者自身白细胞进行基因治疗:通过白细胞单采采集T细胞,在实验室改造使其靶向肿瘤特异性抗原,再回输给患者;疫苗可能增强改造后白细胞的抗肿瘤作用。研究对象为18至72岁、经治疗后仍有转移性实体瘤的成人。受试者接受白细胞单采,住院3至4周,先用约1周化疗进行预处理,随后静脉输注改造后的白细胞,并接受药物预防输注后感染。首次疫苗在细胞输注当天肌肉注射,之后在输注后第4、8、12周复诊,并接受2至3次加强疫苗。随访持续5年,基因治疗团队将联系受试者共15年。

核对登记原文(英文)

Background: Many cancer cells produce substances called antigens that are unique to each cancer. These antigens stimulate the body s immune responses. One approach to treating these cancers is to take disease-fighting white blood cells from a person, change those cells so they will target the specific proteins (called antigens) from the cancer cells, and return them to that person s blood. The use of the white blood cells in this manner is one form of gene therapy. A vaccine may help these modified white cells work better. Objective: To test a cancer treatment that uses a person s own modified white blood cells along with a vaccine that targets a specific protein. Eligibility: Adults aged 18 to 72 years with certain solid tumors that have spread after treatment. Design: Participants will undergo leukapheresis: Blood is removed from the body through a tube attached to a needle inserted into a vein. The blood passes through a machine that separates out the white blood cells. The remaining blood is returned to the body through a second needle. Participants will stay in the hospital for 3 or 4 weeks. They will take chemotherapy drugs for 1 week to prepare for the treatment. Then their modified white cells will be infused through a needle in the arm. They will take other drugs to prevent infections after the infusion. The vaccine is injected into a muscle; participants will receive their first dose of the vaccine on the same day as their cell infusion. Participants will have follow-up visits 4, 8, and 12 weeks after the cell infusions. They will receive 2 or 3 additional doses of the boost vaccine during these visits. Follow-up will continue for 5 years, but participants will need to stay in touch with the gene therapy team for 15 years. ...

登记原文与核验信息

试验登记号
NCT06253520
试验期别
I 期
试验状态
进行中(不再招募)
试验中心
National Institutes of Health Clinical Center · 贝塞斯达 · 美国
适应症(原文)
Metastatic Solid Cancers; Colorectal Cancer; Breast Cancer; Non-Small Cell Lung Cancer; Gastrointestinal Cancer; Ovarian Cancer; Genitourinary Cancer
干预方式(原文)
Aldesleukin; Fludarabine; Cyclophosphamide; KRAS TCR-Transduced PBL; GRT-C903/GRT-R904