SMARCA2 and intellectual disability-sparse hair-brachydactyly syndrome: A specific role for SMARCA2 mutations has been implicated in NCBRS with at least 80% of patients carrying a mutation in SMARCA2 (OMIM 601358) [Van Houdt et al., 2012], but to our knowledge all causative mutations have been located in exons 15–25, and never before in exon 26.