Immunotherapy of Neuroblastoma Patients Using a Combination of Anti-GD2 and NK Cells — NKEXPGD2  

Neuroblastoma Recurrent Clinical Trial

Official title: Pilot Study of Anti-GD2 and Expanded, Activated Natural Killer Cell Infusion for Neuroblastoma

Status Recruiting

Clinical Trial Summary

Neuroblastoma is a neoplasm of the sympathetic nervous system which affects mostly children younger than 5 years of age. It is a heterogeneous disease, with nearly 50% of patients presenting with a high-risk phenotype. After standard treatment, the 2-year event-free survival (EFS) for high risk neuroblastoma (EFS) is only about 50%. Immunotherapy with anti-GD2 antibodies has been shown to improve EFS in Children's Oncology Group and SIOPEN trials.

The anti-GD2 antibody mediates neuroblastoma cell killing primarily through antibody-dependent cell-mediated cytotoxicity (ADCC). Natural killer (NK) cells are the main effectors of ADCC. We postulate that infusion of expanded activated NK cells from healthy haploidentical donors along with anti-GD2 antibody will enhance neuroblastoma killing.

Clinical Trial Description

Adoptive transfer of haploidentical NK cells has been shown to be safe in clinical trials at NUH. There is experience combining antibody infusion with autologous NK cells in the clinical trial with good safety data.

The proposed trial is a phase I/II study to determine the safety and efficacy of expanded activated haploidentical NK cells in combination with anti-GD2 (ch14.18/CHO). We plan to enrol patients with high risk or relapsed neuroblastoma with evidence of residual disease who are at high risk of recurrence or progression on current treatment.

In the proposed protocol , we plan to infuse NK cells at escalating dose levels to find the optimum dose tolerated by the patients in combination with anti-GD2 (ch14.18/CHO) . There are 3 NK cell dose levels :

Dose level 1 (1 x 10^6/kg) , Dose level 2 (1 x 10^7/kg) , Dose level 3 (1 x 10^8/kg)

If a partial response or stable disease is observed, further infusions of NK cells can be administered. There will be intra- and inter - patient dose escalation.

The donor will be either parent, based on the best NK cell donor as determined by the study team. The donor will be harvested and NK cells expanded prior to infusion into the patient along with anti-GD2 (ch14.18/CHO).

The study aims to study safety and efficacy of a combination of NK cells and anti-GD2 (ch14.18/CHO). ;

Related Conditions & MeSH terms

• Neuroblastoma
• Neuroblastoma Recurrent

• NCT number: NCT03242603
• Study type: Interventional
• Source: National University Hospital, Singapore
• Contact: Miriam Kimpo, MD
• Phone: +65 8494 3914
• Email: miriam_kimpo@nuhs.edu.sg
• Status: Recruiting
• Phase: Phase 1/Phase 2
• Start date: October 3, 2017
• Completion date: August 15, 2020