Acts as a positive regulator of ciliary hedgehog signaling (By similarity). Probable regulator of ciliogenesis involved in limb morphogenesis (PubMed:27528616, PubMed:30395363). In cooperation with CBY1 it is involved in the recruitment and fusion of endosomal vesicles at distal appendages during early stages of ciliogenesis (PubMed:27528616, PubMed:30395363). Plays an important role in the mitochondrial function and is essential for maintaining mitochondrial morphology and inner membrane ultrastructure (PubMed:30404948). In vitro, can generate membrane curvature through preferential interaction with negatively charged phospholipids such as phosphatidylinositol 4,5-bisphosphate and cardiolipin and hence orchestrate cristae shape (PubMed:30404948). Homodimer (via BAR-like domain) (PubMed:27528616, PubMed:30395363). Heterodimer with FAM92B (via BAR-like domains) (PubMed:27528616). Interacts (via BAR-like domain) with CBY1; this interaction is required for targeting FAM92A to centriole and cilium basal body (PubMed:27528616, PubMed:30395363). Weak punctate vesicular distribution throughout the cytoplasm (PubMed:27528616). Localizes at the distal end of mother centrioles (PubMed:27528616). Extensive colocalization with CBY1 at mother centrioles (PubMed:27528616). The BAR-like domain displays limited similarity to other BAR domains. The disease may be caused by variants affecting the gene represented in this entry. Belongs to the CIBAR family.