Abstract

Abstract INTRODUCTION Children's brain tumours are the biggest cancer killer in children and young adults. Several recent developments have the potential to change the treatment of brain tumours in children, including intra-CSF chemotherapy, ultrasound-mediated blood-brain barrier disruption, convection enhanced delivery, polymer delivery systems and electric field therapy, as well as intra-arterial and intra-nasal chemotherapy. To date, there have been very few clinical trials to evaluate these. The science and technology underlying these developments is not traditionally embedded within the paediatric neuro-oncology network. In addition, custom-built hardware, novel surgical procedures, and the testing and licensing of implantable devices, add difficulty at the regulatory level. METHODS In early 2021, we launched the ‘Clinical Trials Working Group for Central Nervous System Drug Delivery’. This aims to accelerate clinical trials to assess the safety and effectiveness of drug delivery devices for treating paediatric brain tumours. On March 1st, we hosted the first virtual meeting of this group, involving 38 leading brain tumour scientists and clinicians from the UK, EU and US. RESULTS A pre-meeting survey identified the main challenges to acceleration of this preclinical to clinical research pathway as: (1) a lack of specific funding for prototype development and/or scale up for clinical trials; (2) difficulties in navigation of the regulatory landscape; (3) lack of accurate preclinical models; and (4) increased need for multicentric working. Discussion at the meeting echoed the survey responses, and there was agreed consensus that a ‘Roadmap’ document for preclinical to clinical translation should be created. Following the meeting, we launched a pump prime funding call for projects that will address challenges along the preclinical to clinical pathway to move trial proposals into an ‘advanced state of readiness’. CONCLUSION The ideas generated during the initial meeting will help form the basis of a ‘Clinical Trials’ workshop in the autumn of 2021.

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