SMARCA2 and Coffin-Siris syndrome: NCBRS has been reported with a 32 kb de novo in‐frame SMARCA2 deletion affecting exons 20–26 [Wolff et al., 2012] and a 55 kb interstitial deletion involving exons 20–27 was reported in a patient with the phenotypically similar Coffin–Siris syndrome [Tsurusaki et al., 2014].