LRRK2 in 160 nondominant Parkinson disease (PD) patients was performed. Novel variant
screening in a further 470 sporadic PD patients and 630 controls revealed two novel
variants (R1067Q and IVS33+ 6 T> A), which are likely to be pathogenic in five patients. One
patient presented initially with a typical essential tremor phenotype, expanding the
phenotypic spectrum of LRRK2 mutations.