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评估B7-H3-CAR T细胞在初诊高危骨肉瘤患者前期MAP化疗结束时给药的有效性

2026年11月2日 更新者:St. Jude Children's Research Hospital

一项评估B7-H3-CAR T细胞在新诊断高危骨肉瘤患者前期化疗结束时给药的疗效的II期研究

The purpose of this study is to assess the safety, feasibility, and effectiveness of a consolidative B7-H3 CAR T cell therapy in patients with newly diagnosed high-risk osteosarcoma who have undergone upfront standard chemotherapy.

Primary Objectives:

- To evaluate 1-year RFS from the time of SJCARB7H3-41BBL infusion for patients with newly diagnosed metastatic osteosarcoma who received standard chemotherapy.

Secondary Objectives:

  • To evaluate the OS from time of SJCARB7H3-41BBL infusion for patients with newly diagnosed metastatic osteosarcoma who received standard chemotherapy.
  • To evaluate the feasibility of delivering SJCARB7H3-41BBL at the end of standard therapy in patients with newly diagnosed metastatic osteosarcoma.
  • To describe the safety of autologous SJCARB7H3-41BBL therapy when delivered at the end of standard therapy in patients with newly diagnosed metastatic osteosarcoma.

研究概览

地位

招聘中

条件

干预/治疗

详细说明

This is a phase 2 study of SJCARB7H3-41BBL for participants with newly diagnosed high-risk metastatic osteosarcoma who received standard chemotherapy.

All participants will receive standard chemotherapy (for example methotrexate, anthracycline, platinum), local control surgery, and pulmonary metastasectomy if applicable, and this is not considered part of protocol therapy. Participants will undergo apheresis prior to standard local control surgery (about 12 weeks after diagnosis) for SJCARB7H3-41BBL manufacture and then resume standard consolidation therapy. A safety run will initiate with Regimen A. For Regimen A, eligible participants with available SJCARB7H3-41BB product will receive lymphodepletion chemotherapy 14-28 days after the completion of standard chemotherapy (31 weeks after diagnosis), followed by SJCARB7H3-41BB infusion. If Regimen A is not cleared, then Regimen B will be evaluated, where lymphodepletion and SJCARB7H3-41BB infusion occur post pulmonary metastasectomy. Following successful clearance of either regimen A or, if necessary, regimen B, then the efficacy cohort will be initiated. Participants will be followed with serial disease evaluations for 2 years from SJCARB7H3-41BB infusion prior to transfer to our institutional long-term follow-up (LTFU) protocol. The total duration from completion of standard therapy, including experimental therapy and follow-up on 3CAR4OS, is approximately 2 years.

研究类型

介入性

注册 (估计的)

41

阶段

  • 阶段2

联系人和位置

本节提供了进行研究的人员的详细联系信息,以及有关进行该研究的地点的信息。

学习联系方式

研究联系人备份

学习地点

    • Tennessee
      • Memphis、Tennessee、美国、38105-2794
        • 招聘中
        • St. Jude Children's Research Hospital
        • 首席研究员:
          • Julie Park, MD
        • 接触:

参与标准

研究人员寻找符合特定描述的人,称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

不超过 21年 (孩子、成人)

接受健康志愿者

不

有资格学习的性别

全部

描述

Inclusion Criteria:

  1. Participant and/or legally authorized representative has signed the Informed Consent Form for this study

  2. Prior cancer therapy:

    • Regimen A only: Completed all planned cycles of consolidation therapy between 14-28 days prior.
    • Regimen B only: has completed all planned cycles of consolidation chemotherapy at least 14 days prior and if clinically indicated, participant has undergone pulmonary metastasectomy. They must have recovered from any surgical complications with no ongoing sequelae of category 2 or higher by the Clavien-Dindo classification system and less than 6 weeks must have passed from time of pulmonary metastasectomy.
  3. No evidence of progressive disease since enrolled on study

  4. Lansky performance status score of ≥ 50 for participants <16 years of age or Karnofsky score ≥ 50 for participants ≥ 16 years. Participants who are unable to walk because of paralysis, but who are up in a wheelchair, will be considered ambulatory for purposes of assessing performance status

  5. Adequate organ function as indicated by:

    • Renal: Serum creatinine ≤ 1.5 X the upper limit of normal (ULN) based on enrollment eligibility table.
    • Hepatic: Total bilirubin ≤ 3 times ULN for age OR conjugated bilirubin ≤ 2 mg/dL AND ALT (SGPT) ≤ 5 times ULN
    • Cardiac: Shortening fraction ≥ 28% OR ejection fraction ≥ 50% as measured by echocardiogram
    • Respiratory: Oxygen saturation ≥ 90% on room air without supplemental oxygen or mechanical ventilation
  6. Laboratory values meet the following criteria:

    • Absolute Neutrophil Count (ANC) ≥ 750 cells/uL
    • Platelet Count of ≥ 75,000 (can be transfused)
    • Hemoglobin ≥ 7 g/dL (can be transfused)
  7. Participant is ≥ 7 days from receiving supra-physiologic dosing of systemic (IV or PO) corticosteroids. Glucocorticosteroid physiologic replacement therapy for management of adrenal insufficiency is allowed.

  8. Participant and/or legally authorized representative has signed the Informed Consent Form for the treatment phase of this study.

Exclusion Criteria:

  1. Major surgical adverse event related to the primary tumor local control defined as Clavien-Dindo category 3 requiring ongoing wound care.

  2. Evidence of clinically significant encephalopathy/new focal neurologic deficits.

  3. Presence of active severe infection, defined as:

    • positive blood culture within 48 hours of enrollment, OR
    • fever above 38.2° C, AND clinical signs of infection within 48 hours of enrollment
  4. Participant has received prior disease-directed therapy other than 1st line therapy with methotrexate, an anthracycline, and a platinum and local control surgery

    • Regimen B only - okay to have undergone initial pulmonary metastasectomy

  5. Pregnant or breastfeeding

  6. Presence of any condition that, in the opinion of the investigator, would prohibit the participant from undergoing treatment under this protocol

学习计划

本节提供研究计划的详细信息,包括研究的设计方式和研究的衡量标准。

研究是如何设计的?

设计细节

  • 主要用途:治疗
  • 分配:不适用
  • 介入模型:单组作业
  • 屏蔽:无(打开标签)

武器和干预

参与者组/臂
干预/治疗
实验性的:3CAR4OS Treatment

All patients will receive standard of care chemotherapy, which is not considered part of protocol therapy. Eligible patients will undergo apheresis prior to standard local control surgery for CAR T cell manufacture and then resume standard therapy. In the absence of progressive disease, eligible patients with available SJCARB7H3-41BBL product will receive lymphodepletion chemotherapy (fludarabine/cyclophosphamide) after the completion of standard chemotherapy, followed by SJCARB7H3-41BBL infusion. Pulmonary metastasectomy will be performed as indicated according to the standard of care and will be timed after (Regimen A) or before (Regimen B) lymphodepletion and SJCARB7H3-41BBL infusion. Following successful clearance of either regimen A or, if necessary, regimen B, the efficacy cohort will be initiated.

IV

IV

IV prior to and again at 3, 6, and 9 hours following each dose of cyclophosphamide.

IV collection

1X107 CAR+ T cells/kg

研究衡量的是什么?

主要结果指标

结果测量
措施说明
大体时间
Event-free survival (EFS), defined as time from SJCARB7H3-41BBL infusion to disease relapse, progressive disease, new systemic therapy, secondary malignancy or death
大体时间:Time from SJCARB7H3-41BBL infusion to time of first event, followed up to 24-months post-infusion

Event-free participants will be censored at the time of last follow-up. This analysis will report the Kaplan-Meier (KM) curve, along with the 12-month EFS estimate and its 80% confidence interval using the arcsine-square root transformation. Evaluable participants are those who complete standard chemotherapy, receive SJCARB7H3-41BBL and are treated on the regimen used for the Efficacy phase.

Time from SJCARB7H3-41BBL infusion to time of first event, followed up to 24-months post-infusion

次要结果测量

结果测量
措施说明
大体时间
Overall survival (OS), defined as time from SJCARB7H3-41BBL cell infusion to all-cause mortality.
大体时间:Time from SJCARB7H3-41BBL infusion to time of death from any cause, followed up to 24-months post-infusion

Event-free participants will be censored at the time of last follow-up. OS will be reported similarly to the EFS endpoint on the same participant subset.

Time from SJCARB7H3-41BBL infusion to time of death from any cause, followed up to 24-months post-infusion
Number of participants experiencing protocol-specified regimen-related toxicities.
大体时间:Time from SJCARB7H3-41BBL infusion up to 28 days post-infusion.

This outcome measure will be descriptively summarized for the overall participant group and by regimen (if more than 1 regimen is evaluated) for each regimen-related toxicity. Evaluable participants include those who receive SJCARB7H3_41BBL and remain on protocol therapy through at least 28 days post-infusion or experience a related unacceptable toxicity.

Time from SJCARB7H3-41BBL infusion up to 28 days post-infusion.
Number of participants with successful manufacture of SJCARB7H3-41BBL cells of sufficient dose and planned product administration
大体时间:Time of SJCARB7H3-41BBL infusion

This outcome measure will be descriptively summarized for the overall participant group and by regimen (if more than 1 regimen is evaluated) for participants who undergo apheresis and remain on protocol therapy through the end of standard therapy.

Time of SJCARB7H3-41BBL infusion

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

调查人员

  • 首席研究员:Julie Park, MD、St. Jude Children's Research Hospital

出版物和有用的链接

负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查,以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (实际的)

2026年8月21日

初级完成 (估计的)

2034年12月1日

研究完成 (估计的)

2035年12月1日

研究注册日期

首次提交

2026年2月5日

首先提交符合 QC 标准的

2026年2月17日

首次发布 (实际的)

2026年2月24日

研究记录更新

最后更新发布 (实际的)

2026年11月3日

上次提交的符合 QC 标准的更新

2026年11月2日

最后验证

2026年11月1日

更多信息

与本研究相关的术语

关键字

其他研究编号

  • 3CAR4OS

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)?

是的

IPD 计划说明

Individual participant de-identified datasets containing the variables analyzed in the published article will be made available (related to the study primary or secondary objectives contained in the publication). Supporting documents such as the protocol, statistical analyses plan, and informed consent are available through the CTG website for the specific study. Data used to generate the published article will be made available at the time of article publication. Investigators who seek access to individual level de-identified data will contact the computing team in the Department of Biostatistics (ClinTrialDataRequest@stjude.org) who will respond to the data request.

IPD 共享时间框架

Data will be made available at the time of article publication.

IPD 共享访问标准

Data will be provided to researchers following a formal request with the following information: full name of requestor, affiliation, data set requested, and timing of when data is needed. As an informational point, the lead statistician and study principal investigator will be informed that primary results datasets have been requested.

IPD 共享支持信息类型

  • 研究方案
  • 树液
  • 国际碳纤维联合会

药物和器械信息、研究文件

研究美国 FDA 监管的药品

是的

研究美国 FDA 监管的设备产品

不

此信息直接从 clinicaltrials.gov 网站检索,没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求,请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改,我们的网站上也会自动更新.