Probable planar cell polarity effector involved in cilium biogenesis. Proposed to function as core component of the CPLANE (ciliogenesis and planar polarity effectors) complex involved in the recruitment of peripheral IFT-A proteins to basal bodies. May regulate protein and membrane transport to the cilium. May regulate the morphogenesis of hair follicles which depends on functional primary cilia (By similarity). Interacts with CPLANE1. Interacts with INTU and WDPCP; FUZ, INTU and WDPCP probably form the core CPLANE (ciliogenesis and planar polarity effectors) complex. Belongs to the fuzzy family.