GD2 Specific CAR and Interleukin-15 Expressing Autologous NKT Cells to Treat Children With Neuroblastoma

• Status: Recruiting
• Trial end date: 2034-08-10
• Target enrollment: 0
• Participant gender: All

Summary

This research study combines two different ways of fighting cancer: antibodies and Natural Killer T cells (NKT). Antibodies are types of proteins that protect the body from infectious diseases and possibly cancer. T cells, also called T lymphocytes, are special white blood cells that can kill other cells, including cells infected with viruses and tumor cells. Both antibodies and T cells have been used to treat patients with cancers. Investigators have found from previous research that they can put a new gene into T cells that will make them recognize cancer cells and kill them. In a previous clinical trial, investigators made artificial genes called a chimeric antigen receptors (CAR), from an antibody called 14g2a that recognizes GD2, a molecule found on almost all neuroblastoma cells (GD2-CAR). Investigators put these genes into the patients' own T cells and gave them back to patients that had neuroblastoma.

NKT cells are another special subgroup of white blood cells that can specifically go into tumor tissue of neuroblastoma. Inside the tumor, there are other white blood cells called macrophages which help the cancer cells to grow and recover from injury. NKT cells can specifically kill these macrophages and slow the tumor growth.

We will expand NKT cells and add GD2-specific chimeric antigen receptors to the cells. We think these cells might be better able to attack NB since they also work by destroying the macrophages that allows the tumor to grow. The chimeric antigen receptor will also contain a gene segment to make the NKT cells last longer. This gene segment is called CD28. In addition, to further improve the antitumor activity of the GINAKIT cells we added another gene expressing a molecule called Interleukin -15 (IL-15). The combination of these 3 components showed the most antitumor activity by CAR expressing NKT cells and improved these cells' survival in animal models.

GD2-CAR expressing NKTs have not been tested in patients so far. The purpose of this study is to find the largest effective and safe dose of GD2-CAR NKT cells (GINAKIT cells), to evaluate their effect on the tumor and how long they can be detected in the patient's blood and what affect they have on the patient's neuroblastoma.

• Phase: Phase 1
• Accepts Healthy Volunteers?: No

Details

• Lead Sponsor: Baylor College of Medicine
• Collaborators: Center for Cell and Gene Therapy, Baylor College of Medicine; Texas Children's Hospital
• Treatments: Cyclophosphamide; Fludarabine; Fludarabine phosphate; Vidarabine

Criteria

Procurement Inclusion Criteria:

1. Relapsed or refractory high risk neuroblastoma

2. Life expectancy of at least 12 weeks

3. Age greater than 1 year and less than 21 years old

4. Karnofsky/Lansky score of 60% or greater

5. Absence of HAMA prior to enrollment (only in patients that have been previously treated with murine antibodies)

6. Ability to tolerate leukocyte apheresis

7. Informed consent and assent (as applicable) obtained from parent/guardian and child.

8. Patients must have an ANC greater than or equal to 500/µl #, platelet count greater than or equal to 20,000/µl. Patients may be transfused to obtain a platelet count greater than or equal to 20,000/µl.

9. Pulse Ox greater than or equal to 90% on room air

10. Serum AST less than 3 times the upper limit of normal

11. Total Bilirubin less than 1.5 times the upper limit of normal

12. Creatinine < 1.5 upper limit of normal

13. Recovered from the acute toxic effects of all prior chemotherapy based on the enrolling physician's assessment (if some effects of chemotherapy are expected to last long term, patient is eligible if meeting other eligibility criteria).

14. Weight greater than 12kg

Procurement Exclusion Criteria:

1. Rapidly progressive disease

2. History or hypersensitivity to murine protein-containing products

3. Tumor causing airway obstruction

4. Currently receiving immunosuppressive drugs such as corticosteroids$, tacrolimus or cyclosporine

5. Severe previous toxicity from cyclophosphamide or fludarabine based on the enrolling physician's assessment

6. HIV infection

• ANC ≥ 500 without the use G-CSF or GM-CSF for at least 48hrs. $: Patients may receive treatment if treated with corticosteroids with dose of less than 0.5mg/kg/day of prednisone equivalent.

Treatment Inclusion Criteria:

1. Relapsed or refractory high risk neuroblastoma

2. Life expectancy of at least 12 weeks

3. Age greater than 1 year and less than 21 years old

4. Karnofsky/Lansky score of 60% or greater

5. Patients must have an ANC greater than or equal to 500/µl #, platelet count greater than or equal to 20,000/µl. Patients may be transfused to obtain a platelet count greater than or equal to 20,000/µl.

6. Pulse Ox greater than or equal to 90% on room air

7. Serum AST less than 3 times the upper limit of normal

8. Pulse Bilirubin less than 1.5 times the upper limit of normal

9. Creatinine < 1.5 upper limit of normal

10. Recovered from the acute toxic effects of all prior chemotherapy based on the enrolling physician's assessment (if some effects of chemotherapy are expected to last long term, patient is eligible if meeting other eligibility criteria and expected to tolerate lymphodepletion).

11. Absence of human anti-mouse antibodies (HAMA) prior to enrollment for patients who have received prior therapy with murine antibodies

12. Patients must have autologous transduced NKTs with greater than or equal to 20% expression of GD2-specific CAR.

13. Informed consent and assent (as applicable) obtained from parent/guardian and child.

14. Weight greater than 12kg

Treatment Exclusion Criteria:

1. Rapidly progressive disease

2. Currently receiving any investigational drugs

3. History or hypersensitivity to murine protein-containing products

4. Cardiomegaly or bilateral pulmonary infiltrates on chest radiograph or CT. However, patients with cardiomegaly on imaging may be enrolled if they have an assessment of cardiac function (i.e., ECHO or MUGA) within 3 weeks of starting protocol therapy that is within normal limits. Additionally, patients with bilateral pulmonary infiltrates on imaging may be enrolled if the lesions are not consistent with active neuroblastoma (i.e., negative on functional imaging with PET or MIBG, or by pathologic assessment).

5. Tumor potentially causing airway obstruction

6. Pregnancy or lactation or not willing to use birth control

7. Currently receiving immunosuppressive drugs such as corticosteroids$, tacrolimus or cyclosporine

8. Severe previous toxicity form cyclophosphamide or fludarabine based on the enrolling physician's assessment

9. HIV infection

• All labs must be collected within 10 days prior to initiation of study related treatment (except for verification of GD2 transduction) #: ANC ≥ 500/µl without the use G-CSF or GM-CSF for at least 48hrs. $: Patients may receive treatment if treated with corticosteroids with dose of less than 0.5mg/kg/day of prednisone equivalent.