The amount of a acetylgalactosaminyl-O-glycosyl-glycoprotein beta-1,3-N-acetylglucosaminyltransferase (human) when measured in cerebrospinal fluid. The trait is level of acetylgalactosaminyl-O-glycosyl-glycoprotein beta-1,3-N-acetylglucosaminyltransferase (human) in cerebrospinal fluid (OBA_2059438). Also known as: cerebrospinal fluid acetylgalactosaminyl-O-glycosyl-glycoprotein beta-1,3-N-acetylglucosaminyltransferase (human) amount.