Study of CAR T-Cells Targeting the GD2 With IL-15+iCaspase9 for Relapsed/Refractory Neuroblastoma or Relapsed/Refractory Osteosarcoma

Phase 1RecruitingNCT03721068

UNC Lineberger Comprehensive Cancer Center18 enrolled

Overview

The body has different ways of fighting infections and disease. No single way seems perfect for fighting cancer. This research study combines two different ways of fighting disease: antibodies and T cells. Antibodies are molecules that fight infections and protect your body from diseases caused by bacteria and toxic substances. Antibodies work by sticking to those bacteria or substances, which stops them from growing and causing bad effects. T cells are special infection-fighting blood cells that can kill other cells, including tumor cells or cells that are infected. Both antibodies and T cells have been used to treat patients with cancers. They both have shown promise, but neither alone has been enough to cure most patients. This multicenter study is designed to combine both T cells and antibodies in order to create a more effective treatment. The treatment that is being researched is called autologous T lymphocyte chimeric antigen receptor cells (CAR) cells targeted against the disialoganglioside (GD2) antigen that express Interleukin (IL)-15, and the inducible caspase 9 safety switch (iC9), also known as iC9.GD2.CAR.IL-15 T cells.

In previous studies, it has been shown that when T cells have part of an antibody attached to them, they are better at recognizing and killing cancer cells. The antibody that will be used in this study is called anti-GD2. This antibody floats around in the blood and can detect and stick to cancer cells called neuroblastoma cells because they have a substance on the outside of the cells called GD2. For this study, the anti-GD2 antibody has been changed so that instead of floating freely in the blood, it is now joined to the T cells. However, it is unknown how long the iC9.GD2.CAR.IL-15 T cells last in the body, so their chances of fighting cancer cells are not well known. To improve the tumor-fighting power of GD2-CAR-T cells, two additional components were added to these cells. The IL-15 gene was added so that the GD2-CAR-T cells can attack tumor cells more effectively. Interleukin-15 (IL-15) is a chemical that cells use to communicate with one another. Other research using IL-15 in combination with CAR-T cells has shown there is an increase in the body's ability to allow the CAR-T cells to survive and grow in the body. The iC9 gene was added as an "off switch" so it can stop the activity of the GD2-CAR-T cells if there are any serious bad side effects. Bad side effects seen previously in patients receiving the GD2 antibody alone include pain. In this study, the "stop switch" can be used to turn off the GD2-CAR-T cells if you experience intense pain that does not respond to normal pain treatments. The study will enroll a minimum of 10 adult subjects and 10 pediatric subjects; all subjects will undergo lymphodepletion chemotherapy prior to the cell infusion as outlined in the protocol.

Eligibility

Sex: ALLMin age: 18 Months

Medical Language ↔ Plain English

All clinical and laboratory data required for determining eligibility must be available in the subject's medical/research record which will serve as the source document. Because of the nature of iC9.GD2.CAR.IL-15 T cell product preparation, subjects will be assessed for initial study enrollment eligibility (prior to cell procurement) and then will have to meet criteria prior to starting lymphodepletion and prior to T cell infusion. Inclusion Criteria for the Study: 1. Written HIPAA authorization signed by legal guardian. 2. Adequate performance status as defined by Lansky or Karnofsky performance status of ≥ 60 (Lansky for \<16 years of age). 3. Life expectancy ≥12 weeks. 4. Histological confirmation of neuroblastoma or ganglioneuroblastoma at initial diagnosis. Bone marrow samples are acceptable as confirmation of neuroblastoma, confirmation of osteosarcoma at diagnosis 5. High-risk neuroblastoma with persistent/refractory or relapsed disease, defined as: 1. First or greater relapse of neuroblastoma following completion of aggressive multi-drug frontline therapy. 2. First episode of progressive neuroblastoma during aggressive multi-drug frontline therapy. Persistent/refractory neuroblastoma as defined by less than a complete response by the revised International Neuroblastoma Response Criteria (INRC) at the conclusion of at least 4 cycles of aggressive multidrug induction chemotherapy on or according to a high-risk neuroblastoma protocol (such as A3973 or ANBL0532). 3. Patients must be diagnosed with high risk neuroblastoma at initial diagnosis or if non-high risk at time of initial diagnosis must have had evidence of metastatic progression when \>18 months of age as defined in the protocol or relapsed or refractory osteosarcoma that is not responsive to standard treatment. 6. Measurable or evaluable disease per Revised INRC for subjects with neuroblastoma or measurable disease by Response Evaluation Criteria In Solid Tumors Criteria (RECIST) v1.1 criteria for subjects with osteosarcoma. 7. Adequate central nervous system function as defined by: 1. No known Central Nervous System ( CNS) disease 2. No seizure disorder requiring antiepileptic drug therapy Exclusion Criteria for the Study Subjects meeting any of the following exclusion criteria will not be able to participate in this study (procurement, lymphodepletion, and cell infusion). 1. Pregnant or breastfeeding (NOTE: breast milk cannot be stored for future use while the mother is being treated on study). 2. Has a known additional malignancy that is active and/or progressive requiring treatment. 3. History of hypersensitivity reactions to murine protein-containing products. 4. History of hypersensitivity to cyclophosphamide or fludarabine.

Outcomes

Primary Outcomes

Number of participants with adverse events as a measure of safety and tolerability of iC9.GD2.CAR.IL-15 T cells administered to pediatric subjects with relapsed or refractory neuroblastoma or relapsed/refractory osteosarcoma

Toxicity will be classified and graded according to the National Cancer Institute's Common Terminology Criteria for Adverse Events (AEs) (CTCAE, version 5.0), a descriptive terminology which can be utilized for AE reporting. A grading (severity) scale is provided for each AE term/symptom: Grade 1 (Mild; asymptomatic); Grade 2 (Moderate; minimal, local or noninvasive intervention indicated); Grade 3 (Severe or medically significant but not immediately life-threatening; hospitalization indicated; disabling); Grade 4 (Life-threatening consequences; urgent intervention indicated); Grade 5 (Death related to AE). Immune effector cell-associated neurotoxicity syndrome (ICANS) symptoms will be graded according to the criteria outlined in the protocol on a scale from 1 (mild) to 4 (critical). Cytokine release syndrome (CRS) will be graded according to criteria outlined in the protocol on a scale from 1 (mild) to grade 5 (death).

Time frame: 4 weeks

Secondary Outcomes

Identify the maximum tolerated dose (MTD) of iC9.GD2.CAR.IL-15 T cells administered to pediatric subjects with relapsed or refractory neuroblastoma or relapsed/refractory osteosarcoma

Tolerability of iC9.GD2.CAR.IL-15 T cells will be assessed by NCI-CTCAE criteria and the CRS grading criteria outlined in Section 12.4 and neurotoxicity/ICANS will be graded according to criteria outlined in Section 12.5

Time frame: 4 weeks

Expansion and persistence of iC9.GD2.CAR.IL-15 cells in vivo

Persistence of iC9.GD2.CAR.IL-15 T cells in vivo will be determined by quantitative Polymerase chain reaction (PCR) and flow cytometry in peripheral blood samples

Time frame: 15 years

Anti-tumor response rate to iC9.GD2.CAR.IL-15 t cell administration in pediatric subjects with relapsed or refractory neuroblastoma per Revised International Neuroblastoma Response Criteria (INCR) or relapsed/refractory osteosarcoma by RECIST v1.1

The overall response rate (ORR = complete (CR) + partial (PR) + minor (MR) responses) to iC9.GD2.CAR.IL-15 T cell infusion will be determined using the revised International Neuroblastoma Response Criteria (INRC) for subjects with neuroblastoma. The overall response rate (ORR = complete (CR) + partial (PR) responses) for subjects with osteosarcoma will be measured using Response evaluation criteria in solid tumors (RECIST) version 1.1

Time frame: 6 weeks

Overall survival (OS) in pediatric subjects with relapsed or refractory neuroblastoma or relapsed/refractory osteosarcoma treated with iC9.GD2.CAR.IL-15 T cells

OS will be measured from the date of administration of iC9.GD2.CAR.IL-15 T cells to the date of death

Time frame: 15 years

Progression free survival (PFS) in pediatric subjects with relapsed or refractory neuroblastoma or relapsed/refractory osteosarcoma treated with iC9.GD2.CAR.IL-15 T cells

PFS is defined from the date of administration of iC9.GD2.CAR.IL-15 T cells to the date of signs and symptoms of treatment failure or relapse from CR or PR, or death from any cause.

Time frame: 15 years

Study of CAR T-Cells Targeting the GD2 With IL-15+iCaspase9 for Relapsed/Refractory Neuroblastoma or Relapsed/Refractory Osteosarcoma

Overview

Conditions

Interventions

Eligibility

Locations (2)

Outcomes

Primary Outcomes

Secondary Outcomes

Central Contacts