Indeed, the dentate nucleus is affected by tau pathology during the caudal spreading of the disease.4 Furthermore, atrophy of the superior cerebellar peduncles (closely related to the dentate nucleus) has long been reported in PSP40 and has been proposed as a biomarker to distinguish PSP from other Parkinsonian disorders.41 In the present study using AssemblyNet following the Neuromorphometrics labels, we only segmented the whole cerebellar grey matter and three groups of vermal structures (i.e. vermis I-V, vermis VI-VII and vermis VIII-X) but not the cerebellar peduncles. This evidence concerns the gene MAPT and parkinsonian disorder.