Nicolaides–Baraitser syndrome (NCBRS) is a rare disease caused by a mutation in the
SMARCA2 gene. Clinical features include craniofacial dysmorphia and abnormalities of the
limbs, as well as intellectual disorder and often epilepsy. Hepatotoxicity is a rare
complication of the therapy with valproic acid (VPA) and a mutation of the polymerase
γ (POLG) might lead to a higher sensitivity for liver hepatotoxicity. We present a patient
with the coincidence of two rare diseases, the NCBRS and additionally a POLG1 mutation in combination with a liver hepatotoxicity. The co-occurrence in children
for two different genetic diseases is discussed with the help of literature review.
Keywords
Nicolaides–Baraitser syndrome -
SMARCA2 mutation - cooccurrence of two genetic diseases -
POLG1-related effect - valproic acid hepatotoxicity
