The CSF RT-QuIC test was used in 236 PD patients with sporadic PD, PD with GBA, LRRK2, parkin, PINK-1, or DJ1 mutations; 49 DLB patients with either sporadic DLB or DLB with GBA mutation; 14 NMCs with recessive-associated PD gene mutations; or 26 healthy individuals by Brockmann et al. [26]. Here, LRRK2 is linked to Parkinson disease.