Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Observational
Official Title: Natural History Study of Progressive Multifocal Leukoencephalopathy (PML)
Brief Summary:
Background:
- Progressive multifocal leukoencephalopathy (PML) is a severe viral infection of the brain. It is caused by JC virus. Many people have this virus in their bodies all their life, but it is usually kept in check by their immune system. If the immune system does not work right because of a disease or medication, the virus becomes active and can damage cells in the brain. Not much is known about PML or how it affects the immune system. Researchers want to study people with PML to better understand the natural history of the disease.
Objectives:
- To study the natural history of PML.
Eligibility:
- Individuals at least 2 years of age who have PML.
Design: