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Clinical Trials/NCT07211737
NCT07211737RecruitingPhase 1

(INCITE-ON) Phase I Study of i15.NKG2D.Zeta-NK Cell Conditioning in the Tumor Micro-environment in Combination With C7R.GD2.CAR-T for the Treatment of Patients With Relapsed or Refractory Osteosarcoma or Neuroblastoma

Baylor College of Medicine1 site in 1 country27 target enrollmentStarted: July 15, 2026Last updated:
Conditions
Interventions

Trial Snapshot

Phase
Phase 1
Status
Recruiting
Enrollment
27
Locations
1
Primary Endpoint
Dose-limiting toxicity (DLT) rate

Study Overview

Brief Summary

The purpose of this study is to find the largest safe dose of i15.NKG2D.zeta-NK cells in combination with C7R.GD2.CAR-T cells, and additionally to evaluate how long they can be detected in patients' blood and what affect they have on patients' cancer.

Patients eligible for this study have neuroblastoma or osteosarcoma that expresses a substance on the cancer cells called GD2. This cancer has either come back after treatment or did not respond to the standard or other investigational treatments or therapies used to treat it. There is no standard treatment for these types of advanced cancers at this time. This is a gene transfer research study using special immune cells called NK cells and T cells. NK cells and T cells are types of white blood cell that help the body fight infection.

The body has different ways of fighting infection and disease. No single way seems perfect for fighting cancers. This research study combines two different ways of fighting cancer: NK cells and T cells. T cells are special infection-fighting blood cells that can kill cells infected with viruses and tumor cells. NK cells, another kind of infection-fighting cell, can recognize a wide range of cells in distress, including tumor cells and cells that help protect tumor cells in the cancer environment. Both NK cells and T cells have been used individually to treat patients with cancers. They have shown promise, but have not been strong enough individually to cure most patients.

Investigators have found from previous research that we can put a new gene into T cells that will make them recognize GD2, a substance found on almost all neuroblastoma and osteosarcoma cells. We can also put a new gene into NK cells that help them fight the tumor environment. Investigators know that T cells and NK cells need substances called cytokines to survive but the cells do not get enough cytokines after infusion into the body; therefore, the investigators have added the genes C7R and IL15 into the T and NK cells, respectively, to give each cell a constant supply of cytokine that helps them to survive longer.

The C7R.GD2.CAR-T cells and i15.NKG2D.zeta-NK cells are investigational products not approved by the Food and Drug Administration.

Detailed Description

To make the T cells, the investigators will take patient's blood and stimulate it with growth factors that make T cells grow. Investigators will use a retrovirus to insert the GD2-targeting chimeric antigen receptor (CAR) into the T cells. To make NK cells, investigators will take blood from healthy donors and stimulate them with growth factors that make NK cells grow. Investigators will also use a retrovirus to insert the tumor environment-targeting NK receptor, called NKG2D.zeta, into the NK cells.

The cells generated will be frozen and stored to give back to the patient. Because patients will have received cells with a new gene in them, patients will be followed for a total of 15 years to see if there are any long term side effects of gene transfer.

Patients will be assigned a dose of i15.NKG2D.zeta-NK cells. The assigned dose of cells is based on body weight and height.

In this study, patients will receive the i15.NKG2D.zeta-NK and C7R.GD2.CAR-T cells. On Day -5, the patient will be given an injection of i15.NKG2D.zeta-NK cells into the vein through an IV line at the assigned dose. Before receiving the NK cell infusion, the patient may be given a dose of Benadryl (diphenhydramine) and Tylenol (acetaminophen). The infusion will take between 1 to 10 minutes. Investigators will then monitor the patient in the clinic for about 3 hours. The study was designed to not give doses of lymphodepletion chemotherapy prior to the i15.NKG2D.zeta-NK and C7R.GD2.CAR-T cells. However, some patients may need to receive lymphodepletion chemotherapy prior to the NK cell infusion, based on preliminary study results.

This will be followed by an injection of C7R.GD2.CAR-T cells on Day 0. Before receiving the infusion, the patient may be given doses of Benadryl (diphenhydramine) and Tylenol (acetaminophen). The infusion will take between 1 to 10 minutes. Investigators will monitor the patient in the clinic for about 3 hours. The treatment will be given by the Center for Cell and Gene Therapy at Texas Children's Hospital. The patient may need to stay in Houston for up to 4 weeks after the infusion so we can monitor for side effects.

Study Design

Study Type
Interventional
Allocation
Na
Intervention Model
Single Group
Primary Purpose
Treatment
Masking
None

Eligibility Criteria

Ages
1 Year to 24 Years (Child, Adult)
Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • •PROCUREMENT INCLUSION:
  • •Patients with Neuroblastoma that have persistent disease after standard treatment or have relapsed/refractory disease.
  • •Patients with Osteosarcoma that have persistent disease after standard treatment or have relapsed/refractory disease.
  • •Karnofsky/Lansky score of 60% or greater.
  • •Informed consent and assent (as applicable) obtained from parent/guardian and child.
  • •Greater than 1 year of age.
  • •PROCUREMENT

Exclusion Criteria

  • •History of hypersensitivity to murine protein-containing products.
  • •Known presence of Human Anti-Mouse Antibodies (HAMA).
  • •Active autoimmune disease (requiring immunosuppressive treatment in the past 6 months).
  • •Primary brain tumor or known brain metastases (on evaluation by MIBG and/or PET if applicable, CT/MRI/LP not required).
  • •TREATMENT INCLUSION:
  • •Patients with Neuroblastoma that have persistent disease after standard treatment or have relapsed/refractory disease.
  • •Patients with Osteosarcoma that have persistent disease after standard treatment or have relapsed/refractory disease.
  • •Karnofsky/Lansky score of 50% or greater
  • •Pulse Ox greater than or equal to 90% on room air
  • •AST less than 5 times upper limit of normal (less than 10 times upper normal if known with metastatic liver disease)
  • •Total bilirubin less than 3 times the upper limit of normal
  • •Serum creatinine less than 3 times upper limit of normal
  • •Available autologous T-cells with greater than or equal to 20% expressing GD2.CAR
  • •Informed consent and assent (as applicable) obtained from parent/guardian and child.
  • •Greater than 1 year of age.
  • •Recovered from acute toxic effects of all prior chemotherapy and investigational agents before entering this study.
  • •TREATMENT EXCLUSION:
  • •History of hypersensitivity to murine protein containing products (patients who have undergone desensitization and successful re-challenge without hypersensitivity reaction are eligible).
  • •Known presence of Human Anti-Mouse Antibodies (HAMA).
  • •Tumor potentially causing airway obstruction per investigator discretion.
  • •Pregnancy or lactation / will not use birth control methods.
  • •Currently receiving immunosuppressive drugs (patients on low dose corticosteroids are eligible: less than 0.25 mg/kg/day of prednisone/equivalent).
  • •Primary brain tumor or known brain metastases (on evaluation by MIBG and/or PET if applicable, CT/MRI/LP not required).

Arms & Interventions

i15.NKG2D.zeta NK cells and C7R.GD2.CARTs cells

Experimental

Three dose levels will be evaluated. This is a dose escalating trial which will infuse doses of i15.NKG2D.zeta NK cells followed by a fixed dose of C7R.GD2.CAR T cells 5 days later.

Intervention: i15.NKG2D.zeta NK cells and C7R.GD2.CARTs cells (Genetic)

Outcomes

Primary Outcomes

Dose-limiting toxicity (DLT) rate

Time Frame: 4 weeks post-CAR-T cell infusion

Proportion of participants with DLTs related to the combination of NK cell and T cell infusions evaluated as per the NCI CTCAE v5.0 criteria

Maximum tolerated dose (MTD) of i15.NKG2D.zeta-NK cells when given in combination with C7R.GD2.CAR-T cells

Time Frame: 4 weeks post CAR-T infusion of the last participant

The dose level of infused NK cells for which the DLT rate is approximately 0.3

Secondary Outcomes

  • Objective response rate (ORR)(6 weeks after CAR-T infusion)
  • Cytokine release syndrome (CRS) grade(4 weeks post CAR-T infusion)

Investigators

Sponsor Class
Other
Responsible Party
Principal Investigator
Principal Investigator

Robin Parihar, MD, PhD

Associate Professor

Baylor College of Medicine

Study Sites (1)

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