View clinical trials related to Astrocytoma.
Filter by:This research study is evaluating an investigational drug, an oncolytic virus called rQNestin34.5v.2. This research study is a Phase I clinical trial, which tests the safety of an investigational drug and also tries to define the appropriate dose of the investigational drug as a possible treatment for this diagnosis of recurrent or progressive brain tumor.
Astrocytomas / infantile desmoplastic gangliogliomas (DIA / DIG) are rare brain tumors usually affecting infants. They represent about 0.5% of all pediatric brain tumors. DIA / DIG occurs mainly in the first 2 years of life, with a sex ratio M / F of 1.7 to 1. From a histological point of view, DIA / DIG are neuroepithelial tumors. These tumors may have a purely astrocytic differentiation (DIA) or be composed of tumor cells with astrocytic and neuronal differentiation (DIG). The desmoplastic component is usually adjacent to the meninges and is defined by the increase or modification of connective tissues related to the presence of neoplastic cells with the formation of a collagen-rich extracellular matrix. Due to their benign biological behavior and favorable clinical course, they are classified in benign tumors, ie grade I according to the WHO classification. However, all tumors called DIA / DIG do not behave in a benign manner. Cases of metastatic cerebrospinal and malignant disorders have been described. It appears that about 40% of DIG cases require additional medical treatment such as chemotherapy, radiotherapy and / or new surgery, and 15% of infants and children with GIDD die from the disease. It is possible that what is grouped within the DIA / DIG is a heterogeneous group of tumors, evolution and prognosis very variable. The cytogenetic knowledge of DIA / DIG is very limited and is only available on small numbers of cases. Cytogenetic analyzes of several cases of DIG showed normal karyotypes. More recently, a CGH-Array study of 3 cases of DIA / DIG did not find any significant chromosomal gains or losses. It has been shown, however, that a mutation involving BRAF (BRAF rearrangement or BRAF V600E mutations) was a recurrent element in low grade gliomas, particularly in pediatric patients. It is also suggested that deregulation of BRAF activity in some DIA / DIG may indicate the importance of the MAPK (mitogen-activated protein kinase) pathway in signaling pathways for DIA / DIG development. However, data on the link between the BRAF gene and DIA / DIG remains very limited. Thus, further studies are needed to study the other members of the MAPK pathway in DIA / DIG (eg PI3K / AKT / mTOR). This could provide new therapeutic possibilities involving targeted therapies specific to the MAPK signaling pathway. It appears that DIA / DIG does not all behave in a benign manner and some would undergo a malignant transformation that could be due to chromosomal alterations such as, for example, TP53, PI3K. In addition, because of the limited number of cases, it would be interesting to study the characteristics of patients with DIA / DIG in order to study their characteristics and whether there are clinical, pathological, cytogenetic and / Molecular forms between benign and malignant forms.
Malignant gliomas have a very poor prognosis with median survival measured in months rather than years. It is a disease in great need of novel therapeutic approaches. Based on the encouraging results of our preclinical studies which demonstrate improved efficacy without added toxicity, the paradigm of delivering a novel oncolytic adenovirus via a neural stem cell line in combination with radiation and chemotherapy is well-suited for evaluation in newly diagnosed malignant gliomas. The standard-of-care allows application of virotherapy as neoadjuvant therapy and assessment of the cooperative effects with radiation/chemotherapy without altering the standard treatment.
The purpose of the study is to confirm the safety of the selected dose and potential toxicity of oncolytic poliovirus (PV) immunotherapy with PVSRIPO for pediatric patients with recurrent WHO grade III or IV malignant glioma, but evidence for efficacy will also be sought. The primary objective is to confirm the safety of the selected dose of PVSRIPO when delivered intracerebrally by convection-enhanced delivery (CED) in children with recurrent WHO Grade III malignant glioma (anaplastic astrocytoma, anaplastic oligoastrocytoma, anaplastic oligodendroglioma, anaplastic pleomorphic xanthoastrocytoma) or WHO Grade IV malignant glioma (glioblastoma, gliosarcoma). A secondary objective is to estimate overall survival (OS) in this population.
Randomized phase 2 study TVB-2640 in combination with Bevacizumab versus Bevacizumab alone.
Background: The brain is separated from the rest of the blood stream by the blood-brain barrier. This is like a filter that protects the brain. But is also a challenge when medicines need to get into the brain. Researchers want to give the new drug LB100 to people before brain tumor surgery. They will measure how much LB100 is in the blood and how much gets into the brain. This may help with the use of LB100 to treat brain tumors in the future. Objective: To see if LB100 can pass into the brain. Eligibility: People at least 18 years old with a brain tumor that requires surgery. Design: Participants will be screened with: Physical exam Medical history Blood tests Neurosurgery evaluation Scans Heart tests Tumor sample. This can be from a previous procedure. Participants will have their brain surgery at the Clinical Center. Participants will get a dose of the study drug through a plastic tube in a vein for 2 hours during surgery. Participants will have blood taken 7 times in the 8 hours after getting the study drug. Tumor samples will be taken during surgery. Participants will have a heart test after getting the study drug. Sticky pads on the skin will measure electrical activity of the heart. Two-three weeks after leaving the hospital, participants will have a follow-up visit. They will have a physical exam and blood tests. One month after surgery, they will be contacted in person or by phone to see how they are doing.
This phase II trial studies how well laser interstitial thermal therapy and lomustine work in treating patients with glioblastoma or anaplastic astrocytoma that has come back. Using laser to heat the tumor cells may help to kill them. Drugs used in chemotherapy, such as lomustine, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving laser interstitial thermal therapy and lomustine may work better in treating patients with glioblastoma or anaplastic astrocytoma.
This phase I trial studies the side effects and best dose of ubidecarenone injectable nanosuspension (BPM31510) in treating patients with high-grade glioma (anaplastic astrocytoma or glioblastoma) that has come back and have been previously treated with bevacizumab. BPM31510 may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.
The investigators hypothesize that this study will show that sufficient lymphocyte stem cell can be harvested prior chemoradiation and be reinfused back after treatment, and at least 5 of the 10 patients (50%) will achieve an absolute increase of lymphocyte counts of 300 cells/mm^3 four weeks after stem cell reinfusion in high grade glioma patients.
This pilot clinical trial compares gadobutrol with standard of care contrast agents, gadopentetate dimeglumine or gadobenate dimeglumine, before dynamic contrast-enhanced (DCE)-magnetic resonance imaging (MRI) in diagnosing patients with multiple sclerosis, grade II-IV glioma, or tumors that have spread to the brain. Gadobutrol is a type of contrast agent that may increase DCE-MRI sensitivity for the detection of tumors or other diseases of the central nervous system. It is not yet known whether gadobutrol is more effective than standard of care contrast agents before DCE-MRI in diagnosing patients with multiple sclerosis, grade II-IV glioma, or tumors that have spread to the brain.