PROBLEM TO BE SOLVED: To provide novel causative genes for Parkinson's disease and to provide novel model animals.SOLUTION: Provided is a genetic testing method for Parkinson's disease, which detects a prosaposin gene mutation in a subject-derived sample.SELECTED DRAWING: NoneCOPYRIGHT: (C)2020,JPO&INPIT【課題】パーキンソン病の新たな原因遺伝子の提供及び新たなモデル動物の提供。【解決手段】パーキンソン病の遺伝子検査方法であって、被験者由来の試料におけるプロサポシン遺伝子変異を検出する方法。【選択図】なし