“…GIGYF2 was initially reported in a cohort composed of Italian and French PD patients (Lautier et al, 2008), yet subsequent studies in Portuguese and US cohorts did not find evidence of association with PD (Bras et al, 2009). Numerous additional studies, including in a different Italian cohort and multiple other ethnicities, also failed to identify an association of GIGYF2 variants with PD (Bartonikova et al, 2018; Bonetti et al, 2009; Di Fonzo et al, 2009; Guo et al, 2009; Huo et al, 2017; Lesage et al, 2010; Li et al, 2010; Meeus et al, 2011; Nichols et al, 2009; Samaranch et al, 2010; Tan et al, 2009; Tan and Schapira, 2010; Tian et al, 2012; Vilarino-Guell et al, 2009; Wang, L. et al, 2010; Wang, L. et al, 2011; Yang et al, 2019; Zhang et al, 2015; Zhang et al, 2009; Zimprich et al, 2009). It is therefore very unlikely that GIGYF2 is associated with PD.…”