Last updated on December 2019

Dinutuximab Sargramostim and Combination Chemotherapy in Treating Patients With Newly Diagnosed High-Risk Neuroblastoma Undergoing Stem Cell Transplant


Brief description of study

This phase II trial studies the side effects and how well dinutuximab and sargramostim work with combination chemotherapy in patients with high-risk neuroblastoma undergoing stem cell transplant. Immunotherapy with monoclonal antibodies, such as dinutuximab, may induce changes in the body's immune system and may interfere with the ability of tumor cells to grow and spread. Sargramostim helps the body produce normal infection-fighting white blood cells. Giving chemotherapy before a stem cell transplant, with drugs such as cisplatin, etoposide, vincristine, doxorubicin, cyclophosphamide, thiotepa, melphalan, etoposide, carboplatin, topotecan, and isotretinoin, helps kill any cancer cells that are in the body and helps make room in a patient's bone marrow for new blood-forming cells (stem cells). Giving dinutuximab and sargramostim with combination chemotherapy may work better than combination chemotherapy alone in treating patients with high-risk neuroblastoma undergoing stem cell transplant.

Detailed Study Description

PRIMARY OBJECTIVE:

I. To assess the feasibility and tolerability of administering ch14.18 (dinutuximab) and sargramostim (GM-CSF) in combination with a multi-agent chemotherapy regimen during cycles 3-5 of the Induction phase for patients with newly-diagnosed high-risk neuroblastoma.

SECONDARY OBJECTIVE:

I. To describe the response rates, event-free survival (EFS) and overall survival (OS) for patients receiving the combination of standard Induction chemotherapy and ch14.18 (dinutuximab) followed by tandem transplant, radiation therapy, and post-consolidation immunotherapy.

EXPLORATORY OBJECTIVES:

I. To describe the clinical relevance of naturally occurring anti-glycan antibodies in patients receiving ch14.18 (dinutuximab).

II. To describe the clinical relevance of natural killer (NK) receptor NKp30 isoforms in patients receiving ch14.18 (dinutuximab).

III. To describe the association between host factors, including human anti-chimeric antibodies (HACA), and response to protocol therapy.

IV. To describe the immune environment (gene expression; immune effector cells, activities and signaling molecules; immune target expression) during and following treatment.

V. To describe the association between levels of circulating GD2, and tumor cell GD2 expression with response to therapy.

OUTLINE

INDUCTION CYCLES 1-2 (21 days): Patients receive cyclophosphamide intravenously (IV) over 15-30 minutes and topotecan IV over 30 minutes on days 1-5. Treatment repeats every 21 days for 2 cycles in the absence of disease progression or unacceptable toxicity.

INDUCTION CYCLE 3: Patients receive cisplatin IV over 1 hour on days 1-3, etoposide IV over 2 hours on days 1-3, dinutuximab IV over 10-20 hours on days 2-5, and sargramostim subcutaneously (SC) on day 6 or 7 of a 21-day cycle.

INDUCTION CYCLE 4: Patients receive vincristine IV over 1 minute on day 1, doxorubicin IV over 1-15 minutes on days 1-2, cyclophosphamide IV over 1 hour on days 1-2, dinutuximab IV over 10-20 hours on days 2-5, and sargramostim SC on day 6 or 7 of a 21-day cycle.

INDUCTION CYCLE 5: Patients receive cisplatin IV over 1 hour on days 1-3, etoposide IV over 2 hours on days 1-3, dinutuximab IV over 10-20 hours on days 2-5, and sargramostim SC on day 6 or 7 of a 21-day cycle.

Patients may undergo surgery after the fifth cycle of Induction at the discretion of treating doctor. Patients with stable disease or better tumor response at the end of Induction proceed to Consolidation. Consolidation treatments begin between 4 and 6 weeks from the start date of Induction chemotherapy cycle 5. For patients who have surgical resection delayed until after Induction chemotherapy cycle 5, Consolidation starts within 4 weeks from the date of surgery.

CONSOLIDATION #1: Patients receive thiotepa IV over 2 hours on days -7 to -5 and cyclophosphamide IV over 1 hour on days -5 to -2. Patients then undergo autologous stem cell transplant (ASCT) on day 0.

CONSOLIDATION #2: Patients receive melphalan IV over 30 minutes on days -7 to -5, etoposide IV over 24 hours on days -7 to -4, and carboplatin IV over 24 hours on days -7 to -4. Patients then undergo ASCT on day 0.

RADIATION THERAPY: Beginning 42-80 days following Consolidation #2, patients receive external beam radiation therapy (EBRT) daily for up to 20 days.

Patients then receive post-Consolidation therapy starting 1 week following radiation therapy.

POST-CONSOLIDATION CYCLES 1-5: Patients receive sargramostim SC on days 1-14, dinutuximab IV over 10-20 hours on days 4-7, and isotretinoin orally (PO) twice daily (BID) on days 11-24. Treatment repeats every 28 days in the absence of disease progression or unacceptable toxicity.

POST-CONSOLIDATION CYCLE 6: Patients receive isotretinoin PO BID on days 15-28 of a 28-day cycle.

After completion of study treatment, patients are followed up at months 3, 6, 9, 12, 15, 18, 24, 30, 36, 42, 48, 54, and 60.

Clinical Study Identifier: NCT03786783

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