We report the results of a family-based study of LRRK2 G2019S penetrance in Parkinson disease. We studied 19 families identified through the analysis of unrelated consecutive patients. The cumulative incidence of the disease was 15% at 60 years, 21% at 70 years, and 32% at 80 years. This study provides accurate estimates of G2019S penetrance by minimizing the selection bias.

doi.org/10.1212/01.wnl.0000254483.19854.ef, hdl.handle.net/1765/59578
Neurology
Department of Clinical Genetics

Goldwurm, S., Zini, A., Mariani, L., Tesei, S., Miceli, R., Sironi, F., … Pezzoli, G. (2007). Evaluation of LRRK2 G2019S penetrance: Relevance for genetic counseling in Parkinson disease. Neurology, 68(14), 1141–1143. doi:10.1212/01.wnl.0000254483.19854.ef