PINK1 and Parkinson disease: The PINK1 (or PARK6) gene was identified to be linked to Parkinson’s disease (PD) for the first time by linkage analysis of consanguineous families with early-onset autosomal recessive PD and is recently reported as one of the most commonly mutated genes in early onset PD (Valente et al., 2004; Agarwal and Muqit, 2022; Gan et al., 2022).