LRRK2 and Parkinson disease: Leucine-rich repeat kinase 2 (LRRK2), a protein linked to genetic and sporadic Parkinson’s disease (PD) [18,19,20], has been revealed as a positive mediator of neuroinflammation, both in in vitro and in vivo studies [21,22,23,24,25,26,27,28,29,30].