A Dose Escalation Phase I Study Of Human- Recombinant Bone Morphogenetic Protein 4 Administrated Via CED In GBM Patients

"Patients will undergo a resection or biopsy of the tumour, confirmation of viable malignant glioma tumour cells and intratumour/interstitial placement under neuronavigational guidance of 2 or 3 catheters.~Catheters will be placed during a second procedure a few days later based upon the patient's condition.~Patients will receive intra-tumour and interstitial CED of increasing amounts of hrBMP4 solutions (starting dose of 0.5 mg) and 1:70 gadolinium-diethylenetriamine pentaacetic acid (Gd-DTPA) in a total of 44-66ml over up to 4-6 days. Gd-DTPA will be co-infused with BMP4 to determine the extent of intra-tumour and interstitial drug delivery. HrBMP4 will be delivered as a continuous infusion via the intracranial catheters."