The amount of a BRCA2 and CDKN1A-interacting protein (human) when measured in cerebrospinal fluid. The trait is level of BRCA2 and CDKN1A-interacting protein (human) in cerebrospinal fluid (OBA_2081411). Also known as: cerebrospinal fluid BRCA2 and CDKN1A-interacting protein (human) amount.