Any Bardet-Biedl syndrome in which the cause of the disease is a mutation in the BBS2 gene. The disease is Bardet-Biedl syndrome 2 (Monarch Disease Ontology id MONDO_0014432). Also known as: BBS2, BBS2 Bardet-Biedl syndrome, Bardet-Biedl syndrome caused by mutation in BBS2, Bardet-Biedl syndrome type 2.