The amount of a MAM domain-containing glycosylphosphatidylinositol anchor protein 1 (human) when measured in cerebrospinal fluid. The trait is OBA_2059926 (level of MAM domain-containing glycosylphosphatidylinositol anchor protein 1 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid MAM domain-containing glycosylphosphatidylinositol anchor protein 1 (human) amount.