Ultra-resistant schizophrenia is not associated with the multidrug-resistant transporter 1 (MDR1) gene rs1045642 variant. Mouaffak, F.; Kebir, O.; Picard, V.; Bonhomme-Faivre, L.; Millet, B.; Olie, J. P.; Reynaud, M.; Krebs, M. O.; Benyamina, A.. J Clin Psychopharmacol. 2011; 236-8: p.236-8. doi:10.1097/JCP.0b013e31820f9152Article