Deakin University
Browse
ashley-resultsofaphase-2004.pdf (634.24 kB)

Results of a phase 1 study utilizing monocyte-derived dendritic cells pulsed with tumor RNA in children and young adults with brain cancer

Download (634.24 kB)
journal contribution
posted on 2004-07-01, 00:00 authored by D A Caruso, L M Orme, A M Neale, F J Radcliff, G M Amor, W Maixner, P Downie, T E Hassall, M L K Tang, David Ashley
We conducted a phase 1 study of 9 pediatric patients with recurrent brain tumors using monocyte-derived dendritic cells pulsed with tumor RNA to produce antitumor vaccine (DCRNA) preparations. The objectives of this study included (1) establishing safety and feasibility and (2) measuring changes in general, antigen-specific, and tumor-specific immune responses after DCRNA. Dendritic cells were derived from freshly isolated monocytes after 7 days of culture with IL-4 and granulocyte-macrophage colony-stimulating factor, pulsed with autologous tumor RNA, and then cryopreserved. Patients received at least 3 vaccines, each consisting of an intravenous and an intradermal administration at biweekly intervals. The study showed that this method for producing and administering DCRNA from a single leukapheresis product was both feasible and safe in this pediatric brain tumor population. Immune function at the time of enrollment into the study was impaired in all patients tested. While humoral responses to recall antigens (diphtheria and tetanus) were intact in all patients, cellular responses to mitogen and recall antigens were below normal. Following DCRNA vaccine, 2 of 7 patients showed stable clinical disease and 1 of 7 showed a partial response. Two of 7 patients who were tested showed a tumor-specific immune response to DCRNA. This study showed that DCRNA vaccines are both safe and feasible in children with tumors of the central nervous system with a single leukapheresis.

History

Journal

Neuro-oncology

Volume

6

Issue

3

Pagination

236 - 246

Publisher

Oxford University Press

Location

Oxford, Eng.

ISSN

1522-8517

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2004, Society for Neuro-Oncology