Studies on RHOT1/Miro1 variants in sporadic PD patients (Berenguer-Escuder et al., 2019; Grossmann et al., 2019) underscored the relevance of Miro1’s role in PD although previous studies failed to provide a genetic link (Anvret et al., 2012; Saeed, 2018; Nalls et al., 2019). This evidence concerns the gene RHOT1 and Parkinson disease.