LRRK2 and Parkinson disease: The overall frequency of LRRK2 undetermined variants was much higher in PD patients (7.3%) than in controls (1%) (p = 0.002; OR = 7.83, 95% CI = 1.76‐34.93) and remained statistically significant after the Bonferroni correction (α = 0.05/8 = 0.0063).