LRRK2 and Parkinson disease: Table 2 summarizes various findings from studies evaluating LRRK2 as a potential biomarker in PD. Furthermore, novel assays detecting pT73-Rab10 and pS1292-LRRK2 phosphorylation in peripheral biofluids and centrosomal deficits in cells could enhance LRRK2’s utility for patient stratification and therapy monitoring.