CHCHD2 and synucleinopathy: Patients carrying LRRK2, CHCHD2, and GBA mutations, as well as those with iPD, displayed similar co-neuropathologies, including positivity for p-α-syn, α-syn, ASyO5, 5G4 (synucleinopathy), and HT7 and AT8 (p-tauopathy).