Active clinical trials for "Astrocytoma"

This study is a clinical trial to assess the efficacy and confirm the safety of intratumoral inoculation of G207 (an experimental virus therapy) combined with a single 5 Gy dose of radiation in recurrent/progressive pediatric high-grade gliomas

Rationale: Standard postoperative treatment of isocitrate dehydrogenase 1/2 mutated grade 2 and 3 glioma (IDHmG) consists of radiotherapy and chemotherapy. The improving prognosis of these patients leads towards more emphasis on the long-term effects of treatment. Specifically radiotherapy has been implicated in the development of delayed neurocognitive deterioration. The impact of modern radiotherapy techniques (such as intensity modulated radiotherapy, volumetric modulated radiotherapy and proton beam therapy) and chemotherapy on general toxicity, late neurocognitive outcomes and imaging changes is currently unclear. Objectives: To report treatment outcomes and radiation-induced toxicity from a prospective, multicentre observational cohort of IDHmG patients treated with radiotherapy and chemotherapy, To integrate radiotherapeutic dose distributions, imaging changes and neuropsychological outcome in IDHmG. To evaluate the Dutch selection criteria for proton therapy applied to IDHmG based on the outcomes collected in this observational study. To assess the impact of proton and photon therapy on health-related quality of life (HRQoL) and health-related economics (HR-E) in IDHmG patients. To collect genetic material for future translational research into the interaction between germline DNA, prognosis and radiation-induced toxicity. Nature and extent of the burden and risks associated with participation, benefit and group relatedness: This project is a multicentre, observational cohort of patients undergoing radiotherapy and chemotherapy for IDHmG. The protocol closely follows the local guidelines for clinical follow-up. Specific to the study are extra questionnaires and specific imaging acquired during scheduled MRI's. Routine neuropsychological investigation is standard of care in Erasmus Medical Center (Erasmus MC), but not in all participating centers. We feel the additional burden of participation in this study to be low.

The goal of this study is to determine the efficacy of the study drugs ribociclib and everolimus to treat pediatric and young adult patients newly diagnosed with a high-grade glioma (HGG), including DIPG, that have genetic changes in pathways (cell cycle, PI3K/mTOR) that these drugs target. The main question the study aims to answer is whether the combination of ribociclib and everolimus can prolong the life of patients diagnosed with HGG, including DIPG.

This study assesses the safety and efficacy of repeat monthly dosing of super-selective intra-arterial cerebral infusion (SIACI) of cetuximab and bevacizumab in patients < 22 years of age.

This is an ongoing Phase 2, open-label, single-center, non-randomized study of sintilimab (one anti-PD-1 antibody same as nivolumab approved in China) plus bevacizumab administered in a low dosage schedule in adult (≥ 18 years) participants with a clinical relapse or circulating tumor DNA (ctDNA)-level relapse of Astrocytoma. This study has three non-comparative study groups. Cohort 1 and Cohort 2 will receive the same study drug sintilimab 200mg and bevacizumab 3mg/kg every 3 weeks. Cohort 3 will take only standard treatment. A stringent three-step non-randomized process will be used to assign participants to one of the study groups. Neither participants nor doctors but the researcher can choose which group participants are in. No one knows if one study group is better or worse than the other. 70 total participants are expected to participate in this study (25 participants in Cohort 1 and Cohort 2,20 participants in Cohort 3). Grouping process: After enrollment, under the standard of care, participants will receive regular tumor in situ fluid (fluid within the surgical cavity, TISF) sampling for ctDNA analysis and recceive regular MRI. The researcher will study the TISF ctDNA and imaging dynamics to determine whether the tumor reaches to ctDNA-level (Cohort 1) or clinical relapse (Cohort 2). At the first step, all timely identified as ctDNA-level relapse tumors will be assigned into the Cohort 1 and receive the study drug immediately, those failed to be timely identified will be assigned into the Cohort 2 and receive the study drug after the clinical relapse. At the second step, once Cohort 1 or Cohort 2 reaches the target number, the new participants will be all assigned into the other Cohort. In the third step, if no ctDNA-level or clinical relapse was observed within 60 months after surgery, patients were assigned to Cohort 3 and further analyzed for prognostic biomarkers compared with Cohort 1 and Cohort 2.

RATIONALE: New imaging procedures, such as fluorine F 18 fluorodopa-labeled PET scan, may help in guiding surgery and radiation therapy and allow doctors to plan better treatment. PURPOSE: This clinical trial studies fluorine F 18 fluorodopa-labeled PET scan in planning surgery and radiation therapy in treating patients with newly diagnosed high- or low-grade malignant glioma

Patient education plays an essential role in patient-centered care as it enhances patient satisfaction and information comprehension. However, about 40-80% of the information patients receive from healthcare professionals is forgotten and about half of the information patients remember is incorrect. To give informed consent, patients must be able to understand and recall the discussed information correctly. This is especially important in brain tumor patients, in which different treatment options determine outcome and risks. The goal of treatment in brain tumors is resection as completely as possible, without damaging healthy brain tissue. To this end, patients must understand the complex relation of the tumor to healthy brain tissue. This relation is different in each patient and three-dimensional (3D) in nature. Current two-dimensional visual tools lack the ability to properly display these complex 3D relations. In this study, we will investigate the effect of the use of 3D models in patient education, taking into account patient specific factors that might act as confounders. We will conduct a case control, multi-center study in the Radboud University Medical Center (Radboudumc) Maastricht University Medical Center (MUMC). Patients will be enrolled in the control group until inclusion for the control group is completed (n=30), after which patients will be enrolled in the intervention group (n=30). Patients will be cognitively tested using the Amsterdam Cognition Scale (ACS). After the consultation with their neurosurgeon, patients will be asked to fill out two questionnaires, consisting of two parts (patient experiences and information recall), one week apart.

The main purposes of this study are: I. To assess that the four habitats within the tumor (HAT and LAT) and edema (IPE and VPE) in high-grade glioma are different at vascular, tissular, cellular and molecular levels. II. To analyze the associations between the perfusion imaging markers and relevant molecular markers at the HTS habitats for high-grade glioma diagnosis, prognosis/aggressiveness, progression and/or prediction. III. To analyze the associations between the perfusion imaging markers and immune markers at the HTS habitats useful in immunotherapy evaluation and/or patient selection. IV. To prospectively validate the prognostic capacity (association with OS and PFS) and stratification capacity of the perfusion imaging markers calculated at the HTS habitats.

Glioblastomas (GBM) are the most common type of primary brain tumors with an annual incidence of approximately 500 patients in the Netherlands. Despite extensive treatment including a resection, radiation therapy and chemotherapy, the median overall survival is only 14.6 months. Epidermal growth factor receptor (EGFR) amplification or mutation is regularly observed in GBM and is thought to be a major contributor to resistance to radiotherapy and chemotherapy. The most common EGFR mutation in GBM (EGFRvIII) is present in 30-50% of GBM. Previously MAASTRO lab has shown that expression of EGFRvIII provides GBM cells with a survival advantage when exposed to stress factors such as hypoxia and nutrient deprivation. These metabolic stress factors activate a lysosomal degradation pathway, known as autophagy. Inhibition of autophagy sensitizes cells to hypoxia, reduces the viable hypoxic fraction in tumors with > 40% and subsequently sensitizes these tumors to irradiation. Chloroquine (CQ) is a potent autophagy blocker and is the most widely investigated substance in this context. Previously, the effect of CQ has been demonstrated in a small randomized controlled trial in GBM treated with radiotherapy and carmustine. Although not statistically significantly different, the rate of death over time was approximately half as large in patients receiving CQ as in patients receiving placebo. The intracellular effects of CQ are dose-dependent. Therefore, the authors suggest an increase in daily dose of CQ may be necessary. Furthermore, the combination of CQ with TMZ may induce more damage to the neoplastic cells. In the phase I part of this trial the recommended dose of CQ in combination with radiotherapy and temozolomide will be tested. In the phase II part of the trial patients with a histologically confirmed GBM will be randomized between standard treatment consisting of concurrent radiotherapy with temozolomide and adjuvant temozolomide (arm A) and standard treatment plus CQ (arm B).

This phase II trial studies the best dose and effect of tocilizumab in combination with atezolizumab and stereotactic radiation therapy in treating glioblastoma patients whose tumor has come back after initial treatment (recurrent). Tocilizumab is a monoclonal antibody that binds to receptors for a protein called interleukin-6 (IL-6), which is made by white blood cells and other cells in the body as well as certain types of cancer. This may help lower the body's immune response and reduce inflammation. Immunotherapy with monoclonal antibodies, such as atezolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Fractionated stereotactic radiation therapy uses special equipment to precisely deliver multiple, smaller doses of radiation spread over several treatment sessions to the tumor. The goal of this study is to change a tumor that is unresponsive to cancer therapy into a more responsive one. Therapy with fractionated stereotactic radiotherapy in combination with tocilizumab may suppress the inhibitory effect of immune cells surrounding the tumor and consequently allow an immunotherapy treatment by atezolizumab to activate the immune response against the tumor. Combination therapy with tocilizumab, atezolizumab and fractionated stereotactic radiation therapy may shrink or stabilize the cancer better than radiation therapy alone in patients with recurrent glioblastoma.