Component of the deuterosome, a structure that promotes de novo centriole amplification in multiciliated cells that can generate more than 100 centrioles. Deuterosome-mediated centriole amplification occurs in terminally differentiated multiciliated cells (G1/0) and not in S phase. Essential for centriole amplification and is required for cep152 localization to the deuterosome. Localizes to centrioles and deuterosome. Restricted to multiciliated cells. Highly up-regulated in the ciliated epithelia of embryonic skin during the developmental window of centriole biogenesis. Expression is probably activated by mcidas/mcin. Belongs to the CCDC78 family.