Involved in ciliogenesis. Regulates cilia length through its interaction with MAPKAP1/SIN1 but independently of mTORC2 complex. Modulates mTORC2 complex assembly and function, possibly enhances AKT1 phosphorylation. Does not seem to modulate assembly and function of mTORC1 complex. {ECO:0000269|PubMed:23015189, ECO:0000269|PubMed:23727834}. This is the function of Ensembl gene identifier ENSG00000160050 (CCDC28B, coiled-coil domain containing 28B).