This study is for patients with rare Central Nervous (brain or spine) tumors. The purpose of this study is to determine whether the experimental drug, nivolumab can shrink tumors in patients with rare Central Nervous System (brain or spine) tumors or increase the time it takes for these tumors to grow or spread throughout the body.

This trial is for newly diagnosed glioblastoma (GBM) patients who, after surgery or biopsy, are good candidates for radiation therapy (RT) and temozolomide (TMZ) treatments. The purpose of this study is to see how safe and how well a medical device called Optune works together with the other standard of care treatments for GBM (RT and TMZ). Optune is a device that uses Tumor Treating Fields (TTFields) which are low intensity electric fields that interfere with the division process of cancer cells. Optune has been approved for the treatment of recurrent and newly diagnosed GBM by the Food and Drug Administration (FDA) in the United States. Participants in this study will be randomly assigned to one of two groups:
-The Experimental Group: TTFields using the Optune system upfront with RT and TMZ followed by the use of Optune and TMZ
-The Control Group: Beginning treatment of RT and TMZ, followed by the use of Optune and TMZ
Patients will have clinic visits every 4 weeks and continue on TTFields for 24 months until their disease gets worse or they or their doctor decided to stop treatment.

This study is for people receiving treatment for cancer and who have been tested for SARS CoV-2, the coronavirus that causes the coronavirus disease called COVID-19 and are either waiting for the results of this test or have already hada positive test result.

Researchers are trying to learn more about people with cancer who also have been diagnosed with COVID-19 using blood samples, medical information, and copies of medical images.

This study is for patients with brain cancer. This study is being done to see if by using stereotactic radiosurgery can reduce symptoms and lower the chance of the cancer growing compared to the ususal radiotherapy.

This study is for patients receiving treatment for cancer that may cause side effects of nausea and vomiting. The purpose of this study is to see if olanzapine given in combination with other standard drugs, is still as effective without using the fosaprepitant.

This study is for men and women with glioblastoma. The purpose is to see if we can lower the chance of memory loss by adding the drug Ramipirl to the usual chemoradiation treatment.

Subjects are being asked to volunteer for a research study because they have their first anaplastic astrocytoma (AA) tumor progression (worsening) or recurrence.

The purpose of this study is to measure how well and how safe eflornithine is in combination with lomustine, compared to lomustine taken alone, in treating patients whose anaplastic astrocytoma has come back after radiation and chemotherapy. Eflornithine is an experimental drug that the United States Food and Drug Administration (FDA) has not approved it for use by the general public. Lomustine has been approved by the FDA in the United States for this patient population.