The amount of a RUN and FYVE domain-containing protein 1 (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes term OBA_2080566 (level of RUN and FYVE domain-containing protein 1 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid RUN and FYVE domain-containing protein 1 (human) amount.