In vitro autoradiography using tissue microarrays and fresh‐frozen brain tissue showed that, whereas [3H]C05‐01 selectively binds to αSyn aggregates in PD and MSA brain, the ligand also selectively binds to Aβ and tau aggregates in AD, and therefore, has limited specificity for αSyn.91 The gene discussed is MAPT; the disease is Parkinson disease.