To this end, we first sequenced the whole exomes of four PD patients carrying the LRRK2 G2019S mutation (L2-PD), seven idiopathic PD patients (ID-PD), three non-manifesting carriers of the LRRK2 G2019S mutation (L2-NMC), and three healthy individuals (controls). The gene discussed is LRRK2; the disease is Parkinson disease.