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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT03618381
Other study ID # STRIvE-01
Secondary ID
Status Recruiting
Phase Phase 1
First received
Last updated
Start date June 18, 2019
Est. completion date June 2040

Study information

Verified date April 2024
Source Seattle Children's Hospital
Contact Katie Albert, MD
Phone 206-987-2106
Email immunotherapy@seattlechildrens.org
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This is a phase I, open-label, non-randomized study that will enroll pediatric and young adult research participants with relapsed or refractory non-CNS solid tumors to evaluate the safety, feasibility, and efficacy of administering T cell products derived from the research participant's blood that have been genetically modified to express a EGFR-specific receptor (chimeric antigen receptor, or CAR) that will target and kill solid tumors that express EGFR and the selection-suicide marker EGFRt. EGFRt is a protein incorporated into the cell with our EGFR receptor which is used to identify the modified T cells and can be used as a tag that allows for elimination of the modified T cells if needed. On Arm A of the study, research participants will receive EGFR-specific CAR T cells only. On Arm B of the study, research participants will receive CAR T cells directed at EGFR and CD19, a marker on the surface of B lymphocytes, following the hypothesis that CD19+ B cells serving in their normal role as antigen presenting cells to T cells will promote the expansion and persistence of the CAR T cells. The CD19 receptor harbors a different selection-suicide marker, HERtG. The primary objectives of the study will be to determine the feasibility of manufacturing the cell products, the safety of the T cell product infusion, to determine the maximum tolerated dose of the CAR T cells products, to describe the full toxicity profile of each product, and determine the persistence of the modified cell in the subject's body on each arm. Subjects will receive a single dose of T cells comprised of two different subtypes of T cells (CD4 and CD8 T cells) felt to benefit one another once administered to the research participants for improved potential therapeutic effect. The secondary objectives of this protocol are to study the number of modified cells in the patients and the duration they continue to be at detectable levels. The investigators will also quantitate anti-tumor efficacy on each arm. Subjects who experience significant and potentially life-threatening toxicities (other than clinically manageable toxicities related to T cells working, called cytokine release syndrome) will receive infusions of cetuximab (an antibody commercially available that targets EGFRt) or trastuzumab (an antibody commercially available that targets HER2tG) to assess the ability of the EGFRt on the T cells to be an effective suicide mechanism for the elimination of the transferred T cell products.


Recruitment information / eligibility

Status Recruiting
Enrollment 44
Est. completion date June 2040
Est. primary completion date June 2025
Accepts healthy volunteers No
Gender All
Age group 1 Year to 30 Years
Eligibility Inclusion Criteria: - First 2 subjects enrolled and treated in both Arm A and Arm B: age = 15 and = 30 years - Subsequent subjects: age = 1 and =30years - Histologically diagnosed malignant, non-CNS solid tumor expressing EGFR - Evidence of refractory or recurrent disease - Able to tolerate apheresis or has apheresis product available for use in manufacturing - Life expectancy = 8 weeks - Lansky or Karnofsky score = 50 - Recovered from significant acute toxic effects of all prior chemotherapy, immunotherapy, and radiotherapy - If no apheresis product or T cell product is available,= 7 days post last chemotherapy/biologic therapy administration - If no apheresis product or T cell product is available,= 3 half lives or 30 days, whichever is shorter, post last dose of anti-tumor antibody therapy (including check point inhibitor) - Prior genetically modified cell therapy is allowed if not detectable at enrollment. - If no apheresis product or T cell product is available,= 6 weeks post last dose of myeloablative therapy and allogeneic or autologous stem cell transplant - Subjects who receive autologous stem cell infusion following non-myeloablative therapy are eligible once all other eligibility requirements are met - If no apheresis product or T cell product is available,= 7 days post last systemic corticosteroid therapy (physiologic replacement dosing is allowed) - If no apheresis product or T cell product is available, subjects with neuroblastoma must be = 12 weeks from I131 MIBG therapy. - Adequate organ function - Adequate laboratory values - Patients of childbearing potential must agree to use highly effective contraception Exclusion Criteria: - Presence of active malignancy other than primary malignant solid tumor diagnosis - Current relevant CNS pathology - Presence of active GVHD, or receiving immunosuppressive therapy for treatment or prevention of GVHD within 4 weeks prior to enrollment - Presence of active severe infection - Presence of primary immunodeficiency syndrome - Receiving external beam radiation therapy at time of enrollment - Receiving any anti-cancer agents or chemotherapy - Pregnant or breastfeeding - Unwilling to provide consent/assent for participation in the study and 15 year follow up period - Presence of any condition that, in the opinion of the investigator, would prohibit the patient from undergoing treatment under this protocol

Study Design


Related Conditions & MeSH terms

  • Carcinoma
  • Clear Cell Sarcoma
  • Desmoplastic Small Round Cell Tumor
  • Ewing Sarcoma
  • Germ Cell Tumor
  • Hepatoblastoma
  • Malignant Peripheral Nerve Sheath Tumors
  • Neoplasms
  • Nerve Sheath Neoplasms
  • Neuroblastoma
  • Osteosarcoma
  • Pediatric Solid Tumor
  • Retinoblastoma
  • Rhabdoid Tumor
  • Rhabdomyosarcoma
  • Sarcoma
  • Sarcoma, Clear Cell
  • Sarcoma, Ewing
  • Sarcoma, Synovial
  • Soft Tissue Sarcoma
  • Synovial Sarcoma
  • Wilms Tumor

Intervention

Biological:
second generation 4-1BB? EGFR806-EGFRt
Autologous CD4 and CD8 T cells lentivirally transduced to express a second generation 4-1BB? EGFR806-EGFRt
second generation 4-1BB? EGFR806-EGFRt and a second generation 4 1BB? CD19-Her2tG
Autologous CD4 and CD8 T cells lentivirally transduced to express a second generation 4-1BB? EGFR806-EGFRt and a second generation 4 1BB? CD19-Her2tG

Locations

Country Name City State
United States Seattle Children's Hospital Seattle Washington

Sponsors (1)

Lead Sponsor Collaborator
Seattle Children's Hospital

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Other To quantitate anti-tumor responses by measuring changes in tumor burden using disease-specific evaluations and describe survival characteristics following CAR T cell infusion Standard imaging and bone marrow pathology will be used to determine disease response 84 Days
Primary Estimate the maximum tolerated dose (MTD) or biologically effective dose and dose limiting toxicities (DLT), and describe the full toxicity profile of the two CAR T cell products Type, frequency, severity, and duration of adverse events will be tabulated and summarized 28 days
Primary The number of successfully manufactured EGFR806 and EGFR806xCD19 CAR T cell products will be assessed The number of successfully manufactured products will be measured 28 Days
Primary Establish the safety, defined by adverse events, of EGFR806-specific CAR T cell infusions (Arm A), and of dual transduced EGFR806xCD19 CAR T cell infusions (Arm B) Type, frequency, severity, and duration of adverse events will be tabulated and summarized 28 Days
Secondary Number of Arm A and Arm B subjects with persistence of CAR T cells in the peripheral blood at each visit time point Presence of CAR T cells in the peripheral blood will be assessed 84 Days
Secondary Number of Arm A and Arm B subjects with persistence of CAR T cells in the bone marrow at each visit time point Presence of CAR T cells in the bone marrow will be assessed 84 days
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