Novel insights into the genetic underpinnings reveal that while 5%−10% of PD cases are hereditary, involving mutations in genes such as SNCA, PRKN, PINK1, DJ-1, and LRRK2 [[5], [6], [7]], the majority are idiopathic, hinting at a broader spectrum of contributory factors beyond genetics alone. The gene discussed is LRRK2; the disease is Parkinson disease.