The amount of a microtubule-associated serine/threonine-protein kinase 4 (human) when measured in cerebrospinal fluid. The trait is OBA_2056047 (level of microtubule-associated serine/threonine-protein kinase 4 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid microtubule-associated serine/threonine-protein kinase 4 (human) amount.