Axoneme-binding protein that plays a role in the regulation of ciliary motility and cilium length. Present all along the flagellum, with a marked signal at the base of the flagellum. Expressed in testis. The conserved TPR domains are dispensable for ciliary targeting. The N-terminal half is important for cilary localization and/or binding to the axoneme. The disease may be caused by variants affecting the gene represented in this entry. Belongs to the CFAP70 family. Truncated N-terminus.