<unk>  (NCBRS) is a rare genetic condition caused by de novo missense mutations in the SMARCA2 gene and has only been reported in fewer than 200 cases worldwide. NCBRS is a distinct condition and well recognizable once the symptoms have been identified. The differential includes Coffin–Siris syndrome.
Nicolaides–Baraitser syndrome
Cortes Lacassie syndrome
Grisel's syndrome
Menke-Hennekam syndrome
Weber's syndrome
Vogt–Koyanagi–Harada disease
Fryns-Aftimos syndrome
Renpenning's syndrome