Our findings are in line with those from thalamic segmentations using T1w imaging only,7,9,26 where presymptomatic atrophy of the pulvinar as a whole was identified as a prominent feature in C9orf72 expansion carriers.9 Here, we confirmed presymptomatic involvement of pulvinar subdivisions in the C9orf72 group, finding both volumetric and MD differences compared with non-carriers. Here, C9orf72 is linked to Atrophy.