Monarch Disease Ontology term MONDO_0012890 (pontocerebellar hypoplasia type 2B) is any non-syndromic pontocerebellar hypoplasia in which the cause of the disease is a mutation in the TSEN2 gene. Also known as: TSEN2 non-syndromic pontocerebellar hypoplasia, non-syndromic pontocerebellar hypoplasia caused by mutation in TSEN2.