Any Bardet-Biedl syndrome in which the cause of the disease is a mutation in the BBS7 gene. The disease is Bardet-Biedl syndrome 7 (MONDO_0014435). Also known as: BBS7, BBS7 Bardet-Biedl syndrome, Bardet-Biedl syndrome caused by mutation in BBS7, Bardet-Biedl syndrome type 7.