VITAS: Atezolizumab in Combination With Chemotherapy for Pediatric Relapsed/Refractory Solid Tumors

Recruiting now · Phase 1/Phase 2

Conditions studied: Solid Tumor, Rhabdomyosarcoma

In brief

This trial is a multi-center, non-randomized, open-label Phase I/II study evaluating the feasibility and efficacy of vincristine, irinotecan, temozolomide, and atezolizumab in children with relapsed/refractory solid tumors.

Key facts

Study ID

NCT04796012

Run by

University of Texas Southwestern Medical Center

People needed

23

Starts

2023-04-18

Expected to finish

2027-01-01

Last updated by the study team

2026-06-02

Who can join

Age: 1 and older, up to 30. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Signed informed consent
• Relapsed or refractory solid tumor after at least one prior course of therapy.
• Hodgkin lymphoma or non-Hodgkin lymphoma are not permitted.
• Patients with CNS malignancy or asymptomatic CNS metastases may be enrolled, provided all of the following criteria are met.
• No metastatic or primary disease affecting the brainstem, midbrain, pons, or cerebellum, or within 10 mm of optic nerve
• No history of leptomeningeal disease
• No history of intracranial or spinal cord hemorrhage
• No evidence of progression of neurologic deficit, in the investigator's judgment, within 7 days prior to initiation of study medications.
• Must have histologically confirmed rhabdomyosarcoma (RMS) for RMS efficacy cohort.
• Age ≥ 6 months and ≤ 30 years
• Lansky Performance Status (patients < 16 years old) or Karnofsky Performance Status (patients ≥ 16 years old) ≥ 50
• Ability to comply with the study protocol, in the investigator's judgment
• For RMS efficacy cohort, disease must be measurable as defined by RECIST v1.1.
• For the feasibility cohort, disease must be evaluable, but patients enrolled in the feasibility cohort will be prospectively assessed for measurable disease, RMS patients will also be included in the RMS efficacy cohort.
• Previously irradiated lesions can be considered as measurable disease only if progressive disease has been unequivocally documented at that site since radiation.
• Availability of a tumor specimen suitable for determination of PD-L1 status, either from initial diagnosis or from a recurrence.
• For PD-L1 staining to be performed at the central site, a formalin-fixed paraffin-embedded (FFPE) tumor specimen in a paraffin block (preferred) or at least 15 slides containing unstained, freshly cut, serial sections must be available along with an associated pathology report prior to study enrollment.
• Patients for whom the required number of slides are not available may still be eligible to enroll on study with PI approval
• For the RMS efficacy cohort, it will be required that at least 8 of 17 patients have PD-L1(+) tumor. PD-L1 status will be determined at time of enrollment for all patients. When the maximum allowable number of PD-L1(-) patients has been enrolled and treated on study, PD-L1 positivity will be required for all further enrolled patients.
• Staining will be performed in the central site CAP/CLIA-certified laboratory using the 22c3 antibody for immunohistochemical analysis
• PD-L1(+) status will be defined as staining on ≥1% of tumor cells or ≥1% of stroma.
• For the feasibility cohort, PD-L1 positivity is not required but will be performed centrally in all cases for exploratory biomarker studies.
• Adequate organ and marrow function as defined by the following laboratory values obtained within 21 days prior to initiation of study medication.
• For patients without known bone marrow involvement:
• Absolute neutrophil count ≥ 1.0 x 10\^9 / L (1000/µL) without granulocyte colony-stimulating factor support (≥14 days after the last dose of a long-acting growth factor such as pegfilgrastim, or 7 days after short-acting growth factor)

You may not qualify if…

• Pregnancy or breast-feeding:
• Pregnancy or breastfeeding, or intention of becoming pregnant during study treatment or within 5 months after the final dose of study treatment
• Women of childbearing potential must have a negative serum pregnancy test result within 21 days prior to initiation of study treatment.
• Medical conditions that are excluded:
• Active or history of autoimmune disease or immune deficiency, including, but not limited to, myasthenia gravis, myositis, autoimmune hepatitis, systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, antiphospholipid antibody syndrome, Guillain-Barré syndrome, multiple sclerosis, or Kawasaki syndrome with the following exceptions:
• Patients with a history of autoimmune-related hypothyroidism who are on thyroid-replacement hormone are eligible for the study.
• Patients with controlled Type 1 diabetes mellitus who are on an insulin regimen are eligible for the study.
• Patients with eczema, psoriasis, lichen simplex chronicus, or vitiligo with dermatologic manifestations only (e.g., patients with psoriatic arthritis are excluded) are eligible for the study provided all of following conditions are met at study initiation: (1) Rash must cover less 10% of body surface area, (2) Disease is well controlled at baseline and requires only low-potency topical corticosteroids, (3) No occurrence of acute exacerbations of the underlying condition requiring psoralen plus ultraviolet A radiation, methotrexate, retinoids, biologic agents, oral calcineurin inhibitors, or high-potency or oral corticosteroids within the previous 12 months
• Uncontrolled or symptomatic hypercalcemia (ionized calcium \&amp;gt; 1.5 mmol/L, calcium \&amp;gt; 12 mg/dL or corrected serum calcium \&amp;gt; ULN)
• Uncontrolled pleural effusion, pericardial effusion, or ascites requiring recurrent drainage procedures (once monthly or more frequently)
• Patients with indwelling catheters (e.g., PleurX®) are allowed.
• Uncontrolled tumor-related pain
• Patients requiring pain medication must be on a stable regimen at study entry for at least 2 weeks. Intermittent use of as-needed medication is allowed during this period.
• Clinically significant gastrointestinal disorder that may interfere with absorption of orally administered drugs (at the discretion of the treating physician)
• History of idiopathic pulmonary fibrosis, organizing pneumonia (e.g., bronchiolitis obliterans), drug-induced pneumonitis, or idiopathic pneumonitis, or evidence of active pneumonitis on screening chest computed tomography (CT) scan
• History of radiation pneumonitis in the radiation field (fibrosis) is permitted.
• Significant cardiovascular disease (such as New York Heart Association Class II or greater cardiac disease, myocardial infarction, or cerebrovascular accident) within 3 months prior to initiation of study treatment, unstable arrhythmia, or unstable angina
• History of severe asthma or uncontrolled asthma
• Dyspnea at rest or requirement for supplemental oxygen
• Uncontrolled seizures. Patients taking a stable dose of anticonvulsants (for 2 weeks) are permitted, as long as they are not strong inducers or inhibitors of CYP3A4.
• Any other disease, metabolic dysfunction, physical examination finding, or clinical laboratory finding that contraindicates the use of an investigational drug, may affect the interpretation of the results, or may render the patient at high risk from treatment complications in the opinion of the treating investigator
• Washout periods from prior therapies:
• Myelosuppressive chemotherapy or radiotherapy within 21 days prior to starting study treatment.
• Subjects must have recovered from all acute prior treatment-related toxicities to grade 1 or baseline (excluding alopecia and clinically stable toxicities requiring ongoing medical management, such as hypothyroidism).
• Non-myelosuppressive cancer therapy, such as kinase inhibitors, within 7 days prior to study treatment.

Where it is running

• Ann & Robert H. Lurie Children's Hospital of Chicago — Chicago, Illinois, United States (enrolling)
• Boston Children's Hospital — Boston, Massachusetts, United States (enrolling)
• Cincinnati Children's Hospital — Cincinnati, Ohio, United States (enrolling)
• Children's Hospital of Philadelphia — Philadelphia, Pennsylvania, United States (enrolling)
• The University of Texas Southwestern Medical Center — Dallas, Texas, United States (enrolling)
• Texas Children's Hospital — Houston, Texas, United States (enrolling)
• Seattle Children's — Seattle, Washington, United States (enrolling)

Full record on ClinicalTrials.gov

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