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Testando a combinação de medicamentos anticancerígenos atezolizumabe e tiragolumabe em pessoas com cânceres raros em estágio avançado, estudo RARE3

14 de outubro de 2026 atualizado por: National Cancer Institute (NCI)

Análise Rápida e Avaliação de Resposta da Combinação de Agentes Antineoplásicos em Tumores Raros (RARE CANCER) Trial: RARE 3 Tiragolumab + Atezolizumab

This phase II trial tests how well atezolizumab works in combination with tiragolumab in treating patients with rare solid tumors that may have spread from where they first started to nearby tissue, lymph nodes, or distant parts of the body (advanced stage). Immunotherapy with monoclonal antibodies, such as atezolizumab and tiragolumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. The study biopsy takes small pieces of cancer tissue from a tumor. The purpose of these biopsies is to compare the body's immune response against the tumor before and after treatment with the study drugs. Blood samples will also be collected for the study. The researchers will use the samples to learn more about how atezolizumab and tiragolumab work and which patients in the future might be most likely to respond to atezolizumab and tiragolumab. Using atezolizumab in combination with tiragolumab may help to shrink tumors in patients diagnosed with advanced stage rare solid-tumor cancers.

Visão geral do estudo

Descrição detalhada

PRIMARY OBJECTIVE:

I. Determine the proportion of activated cluster of differentiation 8 (CD8+) T cells at baseline and after treatment with atezolizumab and tiragolumab.

SECONDARY OBJECTIVES:

I. Determine the objective response rate (ORR) of patients with advanced rare cancers to the combination of atezolizumab and tiragolumab using Response Evaluation Criteria in Solid Tumors (RECIST) version (v) 1.1 and Immune-Modified (i)RECIST guidelines.

II. Measure progression-free survival (PFS) time (time frame: baseline until disease progression, death, loss to follow-up, initiation of another anti-cancer treatment, withdrawal of consent, or study termination).

III. Measure the proportion of patients with a clinically promising increase in CD8+ T cell infiltration following treatment with atezolizumab and tiragolumab.

EXPLORATORY OBJECTIVES:

I. Investigate immune activation markers and the immune composition (regulatory T [Treg], natural killer [NK], B-cells, macrophages, myeloid-derived suppressor cells [MDSC], tumor mutation burden [TMB], microsatellite instability [MSI]) in tumor microenvironment (TME) before and after study treatment.

II. Measure T cell receptor (TCR) signaling in tumor-infiltrating T cells in the TME as well as in circulating T cells in blood before and after study treatment using multiplex immunofluorescence assays (IFAs)-developed by the National Cancer Institute (NCI)-Frederick Pharmacodynamic Assay Development & Implementation Section (PADIS)-and use these measurements to evaluate the relationship between TCR signaling in circulating T cells and TME.

III. Evaluate potential associations between atezolizumab and tiragolumab activity and tumor genomic alterations, genomic expression, or TMB as determined from genomic analysis of biopsy samples.

IV. Evaluate genomic alterations in cell free deoxyribonucleic acid (DNA) (cfDNA) and their potential association with therapy response or resistance.

V. Evaluate the pharmacodynamic effects of the treatment on biomarkers of cell death and epithelial-to-mesenchymal transition (EMT) in tumor tissue and circulating tumor cells (CTCs).

VI. Evaluate markers of immune response and the presence of tertiary lymphoid structures (TLS) in TME at baseline and following atezolizumab plus tiragolumab therapy.

OUTLINE:

Participants receive atezolizumab intravenous (IV) over 60 minutes and tiragolumab IV over 30-90 minutes on day 1 of each cycle. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity. Participants also undergo echocardiogram (ECHO) at baseline, undergo biopsy at baseline and on study, and undergo computed tomography (CT) and collection of blood samples throughout the study.

After completion of study treatment, patients are followed up for 30 days.

Tipo de estudo

Intervencional

Inscrição (Real)

12

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.

Locais de estudo

    • Maryland
      • Bethesda, Maryland, Estados Unidos, 20892
        • National Institutes of Health Clinical Center
      • Bethesda, Maryland, Estados Unidos, 20892
        • National Cancer Institute Developmental Therapeutics Clinic
    • Ohio
      • Columbus, Ohio, Estados Unidos, 43210
        • Ohio State University Comprehensive Cancer Center

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

18 anos e mais velhos (Adulto, Adulto mais velho)

Aceita Voluntários Saudáveis

Não

Gêneros Elegíveis para o Estudo

Tudo

Descrição

Inclusion Criteria:

  • Patients must have histologically confirmed rare solid tumors that have progressed on standard therapy or for whom there is no standard of care therapy

    • Patients must not be eligible for a higher priority study that would be feasible for them to enroll in, such as a disease specific study of phase 2 or higher or a randomized study. Specifically, patients who are eligible for the Pediatric Early Phase-Clinical Trial Network (PEP-CTN) pediatric trial of atezolizumab and tiragolumab in children, adolescents, and young adults with SWItch/Sucrose Non-Fermentable (SWI/SNF) related BRG1/BRM-associated factor (BAF) chromatin remodeling complex subunit B1 (SMARCB1) or SWI/SNF related BAF chromatin remodeling complex subunit ATPase 4 (SMARCA4) deficient tumors should be excluded
  • Patients must have measurable disease as defined by Response Evaluation Criteria in Solid Tumors (RECIST) v1.1, with at least one lesion that can be accurately measured in at least one dimension (longest diameter to be recorded for non-nodal lesions and short axis for nodal lesions) as >= 20 mm (>= 2 cm) by chest x-ray or as >= 10 mm (>= 1 cm) with computed tomography (CT) scan, magnetic resonance imaging (MRI), or calipers by clinical exam)

  • Patients must have a tumor site amenable to biopsy

  • Age >= 18 years. Because biopsies are mandatory on this trial, patients < 18 years of age are excluded

  • Eastern Cooperative Oncology Group (ECOG) performance status =< 2 (Karnofsky >= 60%)

  • Absolute neutrophil count >= 1,500/mcL

  • Platelets >= 100,000/mcL

  • International normalized ratio (INR) or activated partial thromboplastin time (aPTT) =< 1.5 institutional upper limit of normal (ULN)

    • Patients who receive therapeutic anticoagulation therapy should be on a stable dose
  • Total bilirubin =< 1.5 x institutional ULN (however, patients with known Gilbert disease who have serum bilirubin level of up to 3 mg/dl may be enrolled)

  • Aspartate aminotransferase (AST) (serum glutamic-oxaloacetic transaminase [SGOT])/alanine aminotransferase (ALT) (serum glutamic-pyruvic transaminase [SGPT]) =< 2.5 x institutional ULN (AST and/or ALT =< 5 x ULN for patients with liver involvement)

  • Creatinine =< 1.5 x institutional ULN OR creatinine clearance levels >= 30 mL/min/1.73 m^2 are permitted as the study agents are not secreted by the kidney

  • Human immunodeficiency virus (HIV)-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months are eligible for this trial

  • For patients with evidence of chronic hepatitis B virus (HBV) infection, the HBV viral load must be undetectable on suppressive therapy, if indicated

  • Patients with a history of hepatitis C virus (HCV) infection must have been treated and cured. For patients with HCV infection who are currently on treatment, they are eligible if they have an undetectable HCV viral load

  • Patients with treated brain metastases are eligible if follow-up brain imaging after central nervous system (CNS)-directed therapy shows no evidence of progression for more than >= 1 month after treatment of the brain metastases

  • Patients with new or progressive brain metastases (active brain metastases) or leptomeningeal disease are eligible if the treating physician determines that immediate CNS specific treatment is not required and is unlikely to be required during the first cycle of therapy

  • 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

  • Patients with known history or current symptoms of cardiac disease, or history of treatment with cardiotoxic agents, should have a clinical risk assessment of cardiac function using the New York Heart Association Functional Classification. To be eligible for this trial, patients should be class 2B or better

  • Willingness to provide biopsy samples for research purposes

  • Administration of atezolizumab and tiragolumab may have an adverse effect on pregnancy and poses a risk to the human fetus, including embryo-lethality. Female patients of child-bearing potential and male patients must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry, for the duration of study participation, and for 5 months (150 days) after the last dose of study agent. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately

  • Ability to understand and the willingness to sign a written informed consent document

Exclusion Criteria:

  • Patients who have had prior monoclonal antibody therapy must have completed that therapy >= 5 weeks (or 3 half-lives of the antibody, whichever is shorter) prior to start of treatment (minimum of 1 week between prior therapy and study enrollment)

  • Patients must have recovered from clinically-significant adverse events of their most recent cancer immunotherapy to grade 1 or less, (with the exception of alopecia and lymphopenia)

  • Patients who are receiving any other investigational agents

  • Prior anti-T-cell immunoreceptor with Immunoglobulin (Ig) and Immunoreceptor Tyrosine-based Inhibitory Motif (ITIM) domains (TIGIT) therapy is not allowed. However, other prior immune checkpoint inhibitor therapy is permitted

  • History of severe allergic, anaphylactic, or other hypersensitivity reactions to chimeric or humanized antibodies (i.e., antibodies with generic names ending in "ximab" or "zumab", respectively) or fusion proteins, not resolved by pre-medication or steroids, leading to subsequent treatment cessation. Patients with a history of allergic reaction to chimeric or humanized antibodies for which symptoms never recurred after subsequent re-challenge may be considered after careful medical history review

  • Treatment with systemic immunosuppressive medications (including, but not limited to, prednisone [> 10 mg/day], cyclophosphamide, azathioprine, methotrexate, thalidomide, and anti-tumor necrosis factor [anti-TNF] agents) within 2 weeks prior to Cycle 1, Day 1

    • Patients who have received acute, low dose, systemic immunosuppressant medications (e.g., a one-time dose of dexamethasone for nausea) may be enrolled
    • The use of inhaled corticosteroids and systemic mineralocorticoids (e.g., fludrocortisone) for patients with orthostatic hypotension or adrenocortical insufficiency is allowed
  • Patients with uncontrolled intercurrent illness, that would limit compliance with study requirements

  • Pregnant women are excluded from this study because atezolizumab and tiragolumab are investigational agents with unknown 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 atezolizumab, and because it is not known if tiragolumab can be excreted in human milk, breastfeeding should be discontinued if the mother is treated with atezolizumab

  • History or risk of autoimmune disease, including, but not limited to, systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, vascular thrombosis associated with antiphospholipid syndrome, Wegener's granulomatosis, Sjogren's syndrome, Bell's palsy, Guillain-Barre syndrome, multiple sclerosis, autoimmune thyroid disease, vasculitis, or glomerulonephritis

    • Patients with a history of autoimmune hypothyroidism on a stable dose of thyroid replacement hormone may be eligible

    • Patients with autoimmune hyperthyroid disease not requiring immunosuppressive treatment may be eligible

    • Patients with controlled Type 1 diabetes mellitus on a stable insulin regimen may be eligible

    • Patients with eczema, psoriasis, lichen simplex chronicus, or vitiligo with dermatologic manifestations only (e.g., patients with psoriatic arthritis would be excluded) are permitted provided that they meet the following conditions

      • Patients with psoriasis must have a baseline ophthalmologic exam to rule out ocular manifestations
      • Rash must cover less than 10% of body surface area (BSA)
      • Disease is well controlled at baseline and only requiring low potency topical steroids (e.g., hydrocortisone 2.5%, hydrocortisone butyrate 0.1%, fluocinolone 0.01%, desonide 0.05%, alclometasone dipropionate 0.05%)
      • No acute exacerbations of underlying condition within the last 12 months (not requiring psoralen plus ultraviolet A radiation [PUVA], methotrexate, retinoids, biologic agents, oral calcineurin inhibitors; high potency or oral steroids)
  • Patients with active tuberculosis (TB) are excluded

  • Severe infections within 4 weeks prior to cycle 1, day 1, including, but not limited to, hospitalization for complications of infection, bacteremia, or severe pneumonia

  • Signs or symptoms of infection within 2 weeks prior to Cycle 1, Day 1

  • Received oral or intravenous (IV) antibiotics within 2 weeks prior to Cycle 1, Day 1. Patients receiving prophylactic antibiotics (e.g., for prevention of a urinary tract infection or chronic obstructive pulmonary disease) are eligible

  • Patients who have undergone major surgical procedures prior to Cycle 1, Day 1 who have not recovered to ECOG performance status =< 2 (Karnofsky >= 60%)

  • Administration of a live, attenuated vaccine within 4 weeks before Cycle 1, Day 1 or anticipation that such a live, attenuated vaccine will be required during the study and up to 5 months after the last dose of atezolizumab

    • Influenza vaccination should be given during influenza season only (approximately October to March). Patients must not receive live, attenuated influenza vaccine within 4 weeks prior to Cycle 1, Day 1 or at any time during the study

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: Treatment (Atezolizumab, Tiragolumab)

Participants receive atezolizumab intravenous (IV) over 60 minutes and tiragolumab IV over 30-90 minutes on day 1 of each cycle. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity. Participants also undergo echocardiogram (ECHO) at baseline, undergo biopsy at baseline and on study, and undergo computed tomography (CT) and collection of blood samples throughout the study.

Undergo blood sample collection

Outros nomes:
  • Coleta de Amostras Biológicas
  • Bioespécime coletado
  • Coleta de amostras

Undergo tumor biopsy

Outros nomes:
  • Bx
  • TIPO DE BIÓPSIA_TIPO
  • Biópsia

Given intravenous (IV)

Outros nomes:
  • Tecentriq
  • MPDL3280A
  • RO5541267
  • RG7446
  • MPDL 3280A
  • MPDL 328OA
  • MPDL-3280A
  • MPDL328OA
  • RG-7446
  • RO-5541267

Undergo computed tomography (CT) scan

Outros nomes:
  • TC
  • GATO
  • Tomografia
  • Tomografia Axial Computadorizada
  • Tomografia computadorizada
  • tomografia
  • Tomografia axial computadorizada (procedimento)
  • Tomografia computadorizada (TC)
  • Diagnóstico Cat Scan
  • Tipo de serviço de varredura de gato diagnóstico

Undergo echocardiogram (ECHO)

Outros nomes:
  • Ecocardiografia
  • CE

Given intravenous (IV)

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Percent Change of Active Cluster of Differentiation 8 (CD8+) T Cells Infiltrating the Tumor at Baseline and After Treatment With Atezolizumab and Tiragolumab
Prazo: At baseline within 28 days before start of treatment and beginning cycle 3 (each cycle is 21 days), an average of 45 days

Activated CD8+ T cells will be detected by multiplex immunofluorescence assays and will be defined by the expression of T cell receptor (TCR) activation (Zeta chain phosphorylation) or phosphorylated Zeta-chain-associated protein kinase 70 (Zap70) Tyrosine at position 493 (pY493); CD8+ cells present within the tumor section that are positive for these markers will be quantified. The change in the active CD8+ T cells density inside the tumor after treatment compared to baseline will be reported.

At baseline within 28 days before start of treatment and beginning cycle 3 (each cycle is 21 days), an average of 45 days

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Objective Tumor Response Rate
Prazo: Baseline until confirmation of progressive disease or response (complete or partial) as defined by RECIST v1.1, up to 11 months

Objective response rate (ORR) was measured using the Response Evaluation Criteria in Solid Tumors (RECIST) version (v) 1.1, which involves the following response definitions. Complete Response (CR): disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to < 10 mm. Partial Response (PR): at least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters. Stable Disease (SD): neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for progressive disease (PD), taking as reference the smallest sum diameters while on study. Progressive Disease (PD): at least a 20% increase in the sum of the diameters of target lesions, taking as reference the smallest sum on study. The appearance of one or more new lesions is also considered progression.

Baseline until confirmation of progressive disease or response (complete or partial) as defined by RECIST v1.1, up to 11 months
Progression-free Survival (PFS)
Prazo: Time from start of treatment to time of disease progression, death, loss to follow-up, initiation of another anti-cancer treatment, withdrawal of consent, or study termination whichever occurs first, assessed up to 1 year

PFS is time interval from start of treatment to time of disease progression, death, loss to follow-up, initiation of another anti-cancer treatment, withdrawal of consent, or study termination whichever occurs first. Disease progression was assessed by the Response Evaluation Criteria in Solid Tumors (RECIST) version (v) 1.1 and is at least a 20% increase in the sum of the diameters of target lesions, taking as reference the smallest sum on study. The appearance of one or more new lesions is also considered progression.

Time from start of treatment to time of disease progression, death, loss to follow-up, initiation of another anti-cancer treatment, withdrawal of consent, or study termination whichever occurs first, assessed up to 1 year
Proportion of Participants With a Clinically Promising Change in Cluster of Differentiation 8 (CD8+) T Cell Infiltration in Tumor Biopsies Following Treatment With Atezolizumab and Tiragolumab
Prazo: At baseline within 28 days before start of treatment and beginning cycle 3, day 1 (each cycle is 21 days), an average of 45 days

The proportion of participants with a clinically promising change in CD8+ T cell infiltration, defined as more than 1.5 standard deviations (SD) (as measured at baseline) in tumor biopsies following treatment with atezolizumab and tiragolumab, as quantified by multiplex immunofluorescence assay.

At baseline within 28 days before start of treatment and beginning cycle 3, day 1 (each cycle is 21 days), an average of 45 days

Outras medidas de resultado

Medida de resultado
Descrição da medida
Prazo
Number of Participants With Serious and/or Non-serious Adverse Events Assessed by the Common Terminology Criteria for Adverse Events (CTCAE v5.0)
Prazo: Adverse Events were monitored/assessed from the time of the first treatment with atezolizumab and tiragolumab to date off study, an average of 3.7 months

Here is the number of participants with serious and/or non-serious adverse events assessed by the Common Terminology Criteria for Adverse Events (CTCAE v5.0). A non-serious adverse event is any untoward medical occurrence. A serious adverse event is an adverse event or suspected adverse reaction that results in death, a life-threatening adverse drug experience, hospitalization, disruption of the ability to conduct normal life functions, congenital anomaly/birth defect or important medical events that jeopardize the patient or subject and may require medical or surgical intervention to prevent one of the previous outcomes mentioned.

Adverse Events were monitored/assessed from the time of the first treatment with atezolizumab and tiragolumab to date off study, an average of 3.7 months

Colaboradores e Investigadores

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

Investigadores

  • Investigador principal: Jibran Ahmed, National Cancer Institute LAO

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)

26 de setembro de 2023

Conclusão Primária (Real)

14 de outubro de 2025

Conclusão do estudo (Estimado)

16 de setembro de 2027

Datas de inscrição no estudo

Enviado pela primeira vez

4 de fevereiro de 2023

Enviado pela primeira vez que atendeu aos critérios de CQ

4 de fevereiro de 2023

Primeira postagem (Real)

8 de fevereiro de 2023

Atualizações de registro de estudo

Última Atualização Postada (Real)

4 de novembro de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

14 de outubro de 2026

Última verificação

1 de outubro de 2026

Mais Informações

Termos relacionados a este estudo

Outros números de identificação do estudo

  • NCI-2023-00705
  • 10561 (Outro identificador: CTEP)
  • NCI-2023-00705 (Identificador de registro: CTRP (Clinical Trial Reporting Program))
  • IRB001590
  • 10561 (Outro identificador: National Cancer Institute LAO)

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

SIM

Descrição do plano IPD

"NCI is committed to sharing data in accordance with NIH policy. For more details on how clinical trial data is shared, access the link to the NIH data sharing policy page."

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

produto fabricado e exportado 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 .

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