PRKN and multiple system atrophy: Other genes and polymorphisms related to PD have been studied, but no associations have been found with MSA: PARK2 (parkin) [197], PINK1 [197], SREBF1 (rs11868035) [198], GPNMB (rs156429) [199], FBXO7 [200], SLC1A2 (rs3794087) [201], TMEM230 [202, 203], TMEM106B (rs1990622, rs3173615) [204], VMAT2 (rs363371, rs363324) [204], LINGO1 (rs11856808, rs9652490) [205], LINGO2 (rs10968280, rs13362909, rs7033345) [205], RAB7L1 (rs1572931) [206], CHCHD2 [207], DCTN1 [208] and ATP13A2 [209].