KRIT1 and cerebrocostomandibular syndrome: We identified six distinct KRIT1 gene variants in the probands harboring multiple CCMs included in the study (Table 1): two of them were novel, whereas four had been previously reported (Nardella et al. 2018; Verlaan et al. 2002; Guarnieri et al. 2007; Zhao et al. 2011; Yang et al. 2017).