Prolonged survival in AIDS-related progressive multifocal leucoencephalopathy following anti-retroviral therapy and cidofovir.

We describe the case of a 44-year-old man who developed sub-acute cerebellar ataxia due to AIDS-related progressive multifocal leucoencephalopathy (PML) caused by JC virus. Following treatment with highly active anti-retroviral therapy (HAART) and cidofovir, he made a marked neurological improvement and is leading an independent life 18 months after the diagnosis of PML. Early recognition of AIDS-related PML and treatment with HAART improves prognosis. Cidofovir, an inhibitor of viral DNA polymerase, appears to have an additive beneficial effect and should be considered especially in patients who fail to improve despite treatment with HAART and in patients who have a high JC virus load in CSF.