Active clinical trials for "Glioblastoma"

Glioblastoma multiforme (GBM) is the most common primary malignant brain neoplasm in adults. Despite recent diagnostic and therapeutic advances, including aggressive surgical resection and chemoradiation, the prognosis of GBM has improved only slightly over the past two decades, with median survival of approximately 15 months. Tumor hypoxia is a feature of GBM that contributes to poor outcome through multiple mechanisms such as 1) overexpression of enzymes that play roles in temozolomide resistance, the main chemotherapeutic agent in GBM and 2) increase expression of cancer stem cells which are more resistant to radiation. Hypoxic tumour regions are associated with higher rates of progression and recurrence. In this study the investigators will use an advanced MRI technique called qBOLD to non-invasively measure oxygenation in GBM and obtain targeted biopsies. The investigators take advantage of physical characteristics of Ferumoxytol (Feraheme®) which is an iron supplement, and utilize two recent technical advances not previously used in human tumours to quantitatively measure oxygenation in GBM. Prior knowledge of hypoxia can assist in prognostication and individualization of treatment planning with special focus on hypoxic regions by targeted radiation dose or regimen modulation; consideration of more intensive chemotherapy regimens; more aggressive and targeted surgical resection and closer short-term clinical and imaging follow-ups.

Glioblastoma is the most frequent primary malignant brain tumor in adults (3,000 new cases per year) and is characterized by a poor prognosis (median survival 12 months). Treatment is based mainly on surgical excision as complete as possible followed by an additional radiochemotherapy. The prognosis depends mainly on the quality of resection when it is macroscopically complete. Different techniques to support the surgical resection have been developed over the past 20 years. The reference technique is currently the intraoperative neuronavigation for guiding excision by matching the intraoperative tumor boundaries with those of the preoperative MRI. Its main drawback is the loss of precision during the resection related to changes in anatomical limits of the tumor. The per-operative fluorescence-guided surgery (FGS) is an innovative alternative technique to support the surgical resection. The 5-aminolevulinic acid (5-ALA), a molecule absorbed by the patient before surgery is captured specifically by the tumor cells and transformed into a fluorochrome revealed intraoperatively by a light source length adapted wave with a set of lenses included in the microscope. Resection is thus guided by this fluorescence whose disappearance translates complete tumor resection. Its interest is twofold: Increase the percentage of complete tumor resection. Improve disease-free survival and overall survival. The objective of the study is to compare the FGS to the intraoperative neuronavigation for the resection of glioblastoma, on a medical and economical level through a randomized, prospective, multicenter trial. The annual number of patients likely to benefit of this technique in France is estimated at 2200 new cases.

Glioblastomas (GBM) demonstrate in vivo genetic and histologic heterogeneity that can be non-invasively identified using imaging phenotypes that identify regionally distinct areas of tumor with genetic alterations that drive tumor resistance pathways. The researchers propose a unique approach to assess initial GBM heterogeneity by performing histological and genomic analysis of biopsies targeted by advanced MRI before treatment.

HYPOTHESIS AND SAMPLE SIZE The tumor delineated by FDG-PET is significantly different from the delineation achieved by MR T1 contrast weighted images in glioblastoma; expecting a standard error of 12.5 % (a confidence interval of 25%), with a confidence level set at 95%, a sample size of 15 patients would be accrued in the study.

Cilengitide 2000 mg flat i.v. twice weekly is administered over a period of 18 months without interruption. Starting one week after the initiation of Cilengitide, RTX (60 Gy, 2 Gy per fraction) with concurrent daily temozolomide (60 mg/m2 p.o.) and daily procarbazine (PCB, 50 mg p.o. if BSA < 1.7; 100 mg p.o. if BSA ≥ 1.7) is given over a period of 6 weeks (RTX Monday to Friday, both TMZ and PCB seven days a week). After a break of 4 weeks, adjuvant TMZ (50mg/m2 p.o in first cycle, 60 mg/m2 p.o. in subsequent cycles) and PCB (50 mg p.o. if BSA < 1.7; 100 mg p.o. if BSA ≥ 1.7) are then given daily D1 to 20. This TMZ/PCB cycle is repeated every 28 days over a total period of 6 cycles.

This early phase I trial studies how well F18 fluciclovine positron emission tomography (PET)/computed tomography (CT) works in assessing tumor volume and radiation therapy response in patients with glioblastoma undergoing surgery. Radioactive imaging agents, such as F18 fluciclovine, used during PET/CT scan may help measure tumor size compared to standard of care magnetic resonance imaging (MRI) contrast agents in patients receiving radiation therapy.

The purpose of this study is to test a new imaging agent called 89Zr-J591 (stands for humanized antibody called J591, that is attached to a radioactive material called Zirconium-89) in patients with glioblastoma multiforme.

Notwithstanding major improvements in treatment modalities, the prognosis of patients with glioblastoma is poor. Hypofractionated radiation therapy as an alternative of the standard 6-week regimen could be an attractive approach as an effort to prevent tumor cell repopulation and reduction the total treatment period promoting patient comfort and convenience.

This is a phase III, non-blinded, blocked randomized clinical trial. The study is conducted on 62 newly diagnosed patients with brain glioblastoma multiforme and anaplastic astrocytoma referring to the oncology clinics during March 2018 and March 2019. The patients will be randomized to 6-cycle and 12-cycle adjuvant Temozolomide groups using block randomization method (1:1).

Adjuvant chloroquine to the conventional treatment for glioblastoma; A randomized, single-blind, placebo-controlled, phase I/II trial.