Parkinson’s Disease and Cancer: A Register-based Family Study

We wanted to compare cancer incidence rates between Parkinson’s disease (PD) patients and persons without PD, as well as between siblings of these groups. We conducted a family-based matched cohort study based on nationwide Swedish health registries and the Swedish Multi-Generation Register.We assessed risk of incident cancer in PD patients (n = 11,786) during 1964–2009 versus a matched c…