The amount of a UPF0235 protein C15orf40 (human) when measured in cerebrospinal fluid. The trait is level of UPF0235 protein C15orf40 (human) in cerebrospinal fluid (OBA_2080063, an Ontology of Biological Attributes term). Also known as: cerebrospinal fluid UPF0235 protein C15orf40 (human) amount.