Esta página foi traduzida automaticamente e a precisão da tradução não é garantida. Por favor, consulte o versão em inglês para um texto fonte.

Avaliação da Eficácia de Células T B7-H3-CAR Administradas no Final da Quimioterapia Inicial Map em Pacientes com Osteossarcoma de Alto Risco Recém-Diagnosticado

2 de novembro de 2026 atualizado por: St. Jude Children's Research Hospital

Um Estudo de Fase II a Avaliar a Eficácia das Células T CAR B7-H3 Administradas no Final da Quimioterapia Inicial Map em Doentes com Osteossarcoma de Alto Risco Recentemente Diagnosticado

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.

Visão geral do estudo

Status

Recrutamento

Condições

Intervenção / Tratamento

Descrição detalhada

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.

Tipo de estudo

Intervencional

Inscrição (Estimado)

41

Estágio

  • Fase 2

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Contato de estudo

Estude backup de contato

Locais de estudo

    • Tennessee
      • Memphis, Tennessee, Estados Unidos, 38105-2794
        • Recrutamento
        • St. Jude Children's Research Hospital
        • Investigador principal:
          • Julie Park, MD
        • Contato:

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

Não mais velho que 21 anos (Filho, Adulto)

Aceita Voluntários Saudáveis

Não

Gêneros Elegíveis para o Estudo

Tudo

Descrição

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

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Tratamento
  • Alocação: N / D
  • Modelo Intervencional: Atribuição de grupo único
  • Mascaramento: Nenhum (rótulo aberto)

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: 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

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Event-free survival (EFS), defined as time from SJCARB7H3-41BBL infusion to disease relapse, progressive disease, new systemic therapy, secondary malignancy or death
Prazo: 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

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Overall survival (OS), defined as time from SJCARB7H3-41BBL cell infusion to all-cause mortality.
Prazo: 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.
Prazo: 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
Prazo: 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

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Investigadores

  • Investigador principal: Julie Park, MD, St. Jude Children's Research Hospital

Publicações e links úteis

A pessoa responsável por inserir informações sobre o estudo fornece voluntariamente essas publicações. Estes podem ser sobre qualquer coisa relacionada ao estudo.

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Real)

21 de agosto de 2026

Conclusão Primária (Estimado)

1 de dezembro de 2034

Conclusão do estudo (Estimado)

1 de dezembro de 2035

Datas de inscrição no estudo

Enviado pela primeira vez

5 de fevereiro de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

17 de fevereiro de 2026

Primeira postagem (Real)

24 de fevereiro de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

3 de novembro de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

2 de novembro de 2026

Última verificação

1 de novembro de 2026

Mais Informações

Termos relacionados a este estudo

Palavras-chave

Outros números de identificação do estudo

  • 3CAR4OS

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

SIM

Descrição do plano IPD

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.

Prazo de Compartilhamento de IPD

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

Critérios de acesso de compartilhamento IPD

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.

Tipo de informação de suporte de compartilhamento de IPD

  • PROTOCOLO DE ESTUDO
  • SEIVA
  • CIF

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Sim

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .