SDCCAG8 and retinitis pigmentosa 1: For example, in family 36, a homozygous deletion c.1444del p.(Thr482Leufs*12) in SDCCAG8 was identified in proband 36‐1 age 10, this gene is known to cause Senior‐Løken syndrome 7 (OMIM #613615) and Bardet–Biedl syndrome 16 (OMIM #615993), two multisystem ciliopathies with RP.