C9orf72 and frontotemporal dementia: C9orf72-FTD typically manifests as bvFTD (Vatsavayai et al., 2019), and anatomically, the cortico-striato-thalamic network (Lee et al., 2014), and medial pulvinar thalamus, specifically, appear to be the primary structures affected (Sha et al., 2012; Yokoyama et al., 2014; Vatsavayai et al., 2016; Bonham et al., 2023).