Increased Program Cell Death–1 Expression on T Lymphocytes of Patients With Progressive Multifocal Leukoencephalopathy

Abstract excerpt

The cellullar immune response is important in the containment of progressive multifocal leukoencephalopathy (PML). We examined program cell death-1 (PD-1) expression, a marker of cellular immune exhaustion, on T lymphocytes in PML. PD-1 expression was elevated on total CD4(+) and CD8(+) T cells (medians 36% and 24%) in PML patients compared with healthy control subjects (medians 14% and 18%; P = 0.0015 and P =...

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