Centrioles lead an important double life: they can give rise to the centrosome or convert to basal bodies and template cilia.
A centriolar complex, composed of CP110 and CEP97, inhibits centriole to basal body conversion, preventing cilia formation.
References
Bettencourt-Dias M, Carvalho-Santos Z. Double life of centrioles: CP110 in the spotlight. Trends Cell Biol. 2008 Jan;18(1):8-11. PMID: 18068367