Establishing Radiolabelled PSMA as a Target for Glioma Treatment

For the diagnostic imaging aspect included in this pilot study, \[68Ga\]PSMA-11 will be used. This is a peptidomimetic agent with a covalently bound chelator (HBED-CC) that is FDA-approved in prostate cancer imaging. We will use PET-MRI to visualise a) the concentration and b) the distribution of this tracer to establish a functional map of primary brain tumour activity

All patients included in our study will undergo stereotactic surgery for biopsy/resection of the tumour as part of the standard of care at KCH. During this study we will not vary from the surgical standard of care for primary brain tumours and will only extend the surgery time due to additional stereotactic biopsies (an additional 3 biopsies increasing the time of the operation by \~30 minutes). Professor Ashkan (KCH) has defined the additional surgical risk of performing these biopsies to be \~0%, since targeted biopsies will only be taken within the tumour just before resection. The stereotactic biopsy may be targeted to areas of high \[68Ga\]PSMA SUV within the tumour as defined by the PET MRI scan.