AUTHOR=PiƱar-Morales Raquel , Calle-Calle Raquel , Carrasco-Garcia Maria , Davila-Arias Cristina , Villar-Guimerans Luisa Maria , Barrero Hernandez Francisco J. TITLE=Case Report: Neurofilament light chain in the follow up of progressive multifocal leukoencephalopathy in a patient with multiple sclerosis treated with ocrelizumab JOURNAL=Frontiers in Pharmacology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2025.1571699 DOI=10.3389/fphar.2025.1571699 ISSN=1663-9812