Common causes of drug-related cheilitis include Etretinate, Indinavir, Protease inhibitors, Vitamin A and Isotretinoin (a retinoid drug).
RARRES1, RARRES2 (this gene), and RARRES3 are genes whose expression is upregulated by the synthetic retinoid tazarotene.
RBP3 (Retinol-binding protein 3 = Interphotoreceptor retinoid-binding protein = Interstitial retinol-binding protein), an eye protein commonly used as a phylogenetic marker.
Tazarotene (marketed as Tazorac, Avage and Zorac) is a third-generation prescription topical retinoid sold as a cream or gel.