2 Clinical Trials for Various Conditions
The purpose of this study is to compare different estimates of calculating creatinine clearance by mathematical formula and compare them to creatinine clearance based on a timed urine collection in patients who received high-dose methotrexate for the treatment of primary CNS lymphoma or CNS involvement of systemic lymphoma.
Background: People with primary diffuse large B-cell lymphoma of the central nervous system (CNS) and aggressive B-cell lymphomas with secondary CNS involvement have a poor prognosis. Researchers want to learn if a combination of drugs can help. Objective: To learn if it is safe to give people with these cancers Nivolumab (VIPOR-Nivo). Eligibility: People aged 18 and older with B-cell lymphoma in the CNS that does not respond to treatment, response to treatment does not last long, or there is no standard treatment. Design: Participants will be screened with: Health history Physical exam Blood, urine, and heart tests Computed tomography (CT), fludeoxyglucose F18 (FDG) positron emission tomography (PET), and magnetic resonance imaging (MRI) scans. Participants will lie in scanners that take pictures of the body. For some scans, a contrast or chemical agent will be injected into a vein. Lumbar puncture or Ommaya tap. Participants will have a small needle inserted into their lower back or scalp to obtain fluid. Possible tumor biopsy. Participants will have a needle inserted into a tumor to take a sample. Participants will get the study drugs in 21-day cycles. They may have up to 6 treatment cycles. They will take some drugs by infusion into a vein and some drugs by mouth. Participants will get counseling at least every 28 days on the risks of lenalidomide. Participants will have visits throughout the study. Visits may include repeats of the screening tests. They may also include: Bone marrow biopsy. Participants will have a needle inserted into their hipbone to remove marrow. Saliva samples and cheek swabs Participants will have periodic follow-up visits for about 10 years.