This multicentre, open-label, dose escalating, Phase I study will enrol approximately 18 patients with progressive and/or multiple recurrent GBM, who after failure of standard therapies will receive GMP Human- recombinant Bone Morphogenetic Protein 4 via intra-tumour and interstitial delivery by CED.~Patients will undergo a resection or biopsy of the tumour, confirmation of viable malignant glioma tumour cells during frozen section performed by the institutional pathologists, and intra-tumor and interstitial placement under neuronavigational guidance of 2 or 3 catheters. No catheters will be placed at time of resection. After resection, catheters will be placed during a separate procedure several days later based upon the patient's condition as determined by both a clinical examination and routine MRI scan.~Patients will receive intra-tumour and interstitial CED of increasing amounts of hrBMP4 solutions (at a starting dose of 0.5 mg) and 1:70 gadolinium-diethylenetriamine pentaacetic acid (Gd-DTPA) in a total of 44-66 ml over up to 4-6 days at the discretion of the investigator.~Gd-DTPA will be co-infused with hrBMP4 to determine the extent of intra-tumour and interstitial drug delivery. Patients will be hospitalized from the time of the original surgery until the end of infusion of hrBMP4.~Patients will be followed for the duration of the study. The primary endpoint of the study is monitoring feasibility and patient safety for the incidence of Dose-Limiting Toxicity (DLT) following intra-tumour and interstitial therapy with hrBMP4 and to determine whether there is a Maximum Tolerated Dose (MTD).
The purpose of the study is to evaluate the feasibility and safety of intra-tumor and interstitial therapy with hBMP4 in increasing doses in patients with progressive and/or multiple recurrent Glioblastoma multiforme (GBM).