High Grade Glioma (HGG)

This is a single-arm, window-of-opportunity clinical study evaluating tarlatamab administered before and after surgery in adult participants with surgically resectable recurrent DLL3-positive high-grade glioma. The study is designed to assess the feasibility and safety of neoadjuvant tarlatamab treatment prior to planned tumor resection, as well as the safety and tolerability of postoperative adjuvant tarlatamab. Eligible participants will have histologically confirmed recurrent high-grade glioma with DLL3-positive tumor expression and will be candidates for neurosurgical resection in whom surgery can be safely delayed to allow neoadjuvant treatment. Participants will receive tarlatamab intravenously using a step-up dosing regimen during the neoadjuvant phase, followed by planned surgical resection after a washout period. After recovery from surgery, participants will restart tarlatamab with step-up dosing and continue adjuvant treatment every 2 weeks for up to 6 cycles. The primary objective is to evaluate the feasibility and safety of neoadjuvant tarlatamab, including the number of participants able to complete the dose-limiting toxicity evaluation period and undergo planned surgery without experiencing a dose-limiting toxicity. Safety assessments will include adverse events graded according to CTCAE v5.0, as well as cytokine release syndrome and immune effector cell-associated neurotoxicity syndrome graded according to ASTCT criteria. Secondary objectives include assessment of antitumor activity using RANO and iRANO criteria, progression-free survival, 12-month overall survival, quality of life using EORTC QLQ-C30 and EORTC QLQ-BN20 questionnaires, and the incidence, severity, and type of treatment-emergent adverse events during the adjuvant treatment period.

This phase I trial studies the side effects and best dose of trametinib and everolimus in treating pediatric and young adult patients with gliomas that have come back (recurrent). Trametinib acts by targeting a protein in cells called MEK and disrupting tumor growth. Everolimus is a drug that may block another pathway in tumor cells that can help tumors grow. Giving trametinib and everolimus may work better to treat low and high-grade gliomas compared to trametinib or everolimus alone.

This is a Phase 1/2, multicenter, open-label, dose-escalation and dose-expansion study evaluating the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), cerebrospinal fluid penetration, and preliminary antitumor activity of orally administered JBI-778, a selective PRMT5 inhibitor, in patients with brain metastases, leptomeningeal disease, or recurrent high-grade glioma. The study consists of a dose-escalation phase to determine the maximum tolerated dose (MTD) and recommended Phase 2 dose (RP2D), followed by expansion cohorts to evaluate preliminary efficacy at the RP2D.

This is a prospective, multicenter, single-arm, pilot clinical investigation, aimed at evaluating the safety and preliminary efficacy of the GlioHook implant in patients with high-grade glioma undergoing surgical resection followed by standard of care (SoC) treatment. GlioHook is a sterile medical device designed to be implanted after tumour resection surgery in suspected high grade glioma patients, covering the entire surface of the tumour resection margins, decreasing infiltration and focalizing the disease, while improving the effects of radiotherapy. Once implanted, GlioHook exerts a dual mechanism that combines tumour cell focalization and radiosensitization.

This study is researching an experimental drug called cemiplimab (called "study drug") and the combination of experimental drugs of fianlimab and cemiplimab (called "study drugs"). The study is focused on children and young adults with recurrent or progressive High-Grade Glioma (HGG) or ependymoma. "Recurrent" means that the cancer came back after treatment. "Progressive" means that the tumor has grown or spread. The aim of the study is to see how safe, tolerable, and effective cemiplimab and the combination of fianlimab and cemiplimab are. The study is looking at several other research questions, including: * What side effects may happen from receiving the study drug(s) * Do the study drug(s) help study participants live longer without their tumors growing or spreading * How much of the study drug(s) is in the blood at different times * Whether the body makes antibodies against the study drug(s) (which could make the study drug\[s\] less effective or lead to side effects)