Figure 2. Plasma UCHL1 levels according to SNCA Rep1 genotype. Values are mean ± SEM. In PD patients, higher UCHL1 levels in carriers of long SNCA Rep1 alleles compared to carriers of short alleles, adjusted for age, gender and disease duration. Abbreviation: HC = Health Control; PD = Parkinson’s disease; S = Rep1 short allele; L = Rep1 long allele.