In FCD, reports of brain somatic mutations in genes involved in the mTORC1 pathway, especially activating somatic MTOR variants, are increasingly common (Poduri et al., 2013; Lim et al., 2015; Nakashima et al., 2015; Mirzaa et al., 2016; Møller et al., 2016; Marsan and Baulac, 2018). Here, MTOR is linked to fleck corneal dystrophy.