BBS8 (also known as TTC8) is a subunit of BBSome complex which is necessary for ciliary membrane biogenesis. BBS8 localizes specifically to ciliated structures, such as the connecting cilium of the retina and columnar epithelial cells in the lung. Defects in BBS8 cause Bardet-Biedl syndrome type 8 (BBS8), an genetic disorder characterised by retinal degeneration, obesity, polydactyly, cognitive impairment and kidney failure. BBS8 generates two alternatively spliced isoforms. Western blot analysis using this antibody detected a major band around 60 kD in lung tissue.