BRG1-associated factor chromatin remodeling complex (BAF complex, or SWI/SNF) disorder is a specific group of developmental delay (DD)/intellectual disability (ID) syndromes with distinctive craniofacial dysmorphisms, variable congenital anomalies, and acral defects, also termed “BAF-opathies” and “SWI/SNF-related intellectual disability disorders” (SSRIDDs), such as Coffin-Siris syndrome (6, 7). The gene discussed is BANF1; the disease is dentin dysplasia.