Clinical trials

This prospective exploratory interventional study aims to investigate the neurophysiological effects and safety of multi-parameter temporal interference (TI) stimulation in patients undergoing stereoelectroencephalography (SEEG) monitoring. Participants who have already undergone SEEG electrode implantation for clinical indications will receive non-invasive TI stimulation targeting selected deep brain regions according to their individual electrode coverage and neuroimaging data. Multiple stimulation frequencies will be tested while intracranial SEEG signals are recorded before, during, and after stimulation. The study will characterize frequency-dependent changes in local and distributed brain activity and explore the relationship between TI stimulation parameters and neurophysiological responses, providing in vivo evidence for parameter optimization of non-invasive deep brain stimulation.

The goal of this observational study is to investigate the predictive value of sub-hairline electroencephalography (EEG) during anesthesia recovery for postoperative delirium (POD). The main question to be answered is: * Can sub-hairline EEG measured during anesthesia recovery serve as a reliable predictor of POD? Adult patients undergoing elective craniotomy and admitted to the ICU will be enrolled. Sub-hairline EEG will be monitored until ICU discharge.

Optic pathway glioma (OPG) can result in visual deterioration. Symptomatic patients often report deficits in visual acuity (VA), visual field, visual-evoked potentials (VEPs), strabismus, proptosis, disc swelling, and other visual/neurological problems. VA itself remains one of the most important outcome measures for OPG patients, with various studies showing strong ties of VA level to overall quality of life and well-being . Maintenance of favorable VA and vision outcomes is of paramount importance in the management of OPG. In terms of management of OPG, surgery and radiotherapy are used on a more limited basis because of location of the tumors and risk of secondary tumors, respectively. Tumor stabilization often prioritized, and chemotherapy is considered ideal for tumor stabilization in OPG, but vision is not always retained and may worsen in some cases, partially due to low radiographic efficacy and long time interval to response of the current chemotherapy regimen. In the prior study, the investigators modified the traditional carboplatin combined with vincristine regimen by increasing the dose of carboplatin and combining with an anti-angiogenic drug. Of the 15 OPG patients, objective response rate was 80% and the time to response was only 3.3 months. 8 (53%) patients experienced an improvement in visual acuity during therapy and 6 (40%) were stable, which was higher than the historical studies. This study was launched to further verify the clinical efficacy of the modified regimen and its effect on visual acuity improvement.

This study is a prospective single-center clinical study, which aims to observe and evaluate the efficacy and safety of apatinib combined with temozolomide and oral etoposide in the treatment of recurrent medulloblastoma in children.

Apatinib mesylate may be an effective treatment for recurrent atypical/malignant meningioma. This prospective clinical study is now planned to verify the effectiveness and safety of apatinib mesylate in the treatment of relapsed atypical/malignant meningioma.

Almost all gliomas relapse. After temozolomide rechallenge or combination with irinotecan, the progression-free survival rate at 6 months (PFS-6%) of recurrent glioblastoma was about 21%. After treatment with irinotecan-based chemotherapy regimen, the PFS-6% of recurrent lower-grade gliomas was 40%. The optimal chemotherapeutics of recurrent gliomas has yet to be determined. Anti-angiogenesis is a promising therapeutic strategy. Vascular endothelial growth factor-A (VEGF) is the primary driver of angiogenesis in tumors. Bevacizumab, a humanized monoclonal antibody directed against VEGF, is the prototypical anti-angiogenic drug and received accelerated approval of the United States Food and Drug Administration (FDA) for the treatment of recurrent glioblastoma. Bevacizumab inproved the PFS-6% (36%), but had no effect on the overall survival (OS) (9.2 months). Moreover, the effects of bevacizumab are transient and most patients' tumors progress just after a median time of 3-5 months. Recombinant human endostatin (rh-ES) is an endogenous broad-spectrum angiogenesis inhibitor that has been shown to significantly improve therapeutic efficacy when combining with conventional chemotherapy agents in non-small-cell lung cancer, breast cancer and melanoma. In our previous study, we retrospectively analyzed the effect and toxicity of rh-ES when combined with temozolomide and irinotecan on adult recurrent disseminated glioblastoma. After combined treatment, PFS-6% was 23.3%; the median PFS and OS were 3.2 and 6.9 months, respectively, which were promising compared with that in other studies. Once patients get radiographic remission in a short time (4 months), they may get a long PFS.The combined regimen did not reduce the sensitivity of tumor to bevacizumab. After tumor progression from the combined chemotherapy, bevacizumab usage could help to prolong the survival time (5.1 months versus 2.4 months). Moreover, the toxicities of the combination therapy in this study were manageable. On the basis of prior clinical experience, we carry out this prospective trial to confirm the efficacy and safety of the combination of rh-ES, temozolomide and irinotecan in patients with recurrent gliomas.

This study is intend to improve the objective response rate in treatment of camrelizumab in recurrent primary central nervous system lymphoma patients.

Ventilator-associated brain injury (VABI) frequently occurs in ICU patients. Although animal studies indicate the hippocampus as a key target of VABI, its relevance in human patients remains uncertain. In this study, the investigators aim to monitor hippocampal EEG activity during the weaning process of patients off mechanical ventilation, and also exploring the coupling between breathing patterns and hippocampal activity.