PMID- 23859571 OWN - NLM STAT- MEDLINE DCOM- 20140317 LR - 20201209 IS - 1744-8042 (Electronic) IS - 1462-2416 (Linking) VI - 14 IP - 10 DP - 2013 Jul TI - Impact of pharmacogenetics on CNS side effects related to efavirenz. PG - 1167-78 LID - 10.2217/pgs.13.111 [doi] AB - AIM: This article evaluates which genetic factors are involved in CNS toxicity related to long-term treatment with efavirenz (EFV) standard doses and their relationship with plasma concentrations. PATIENTS & METHODS: A total of 119 HIV-positive patients, in which 1350 EFV plasma concentrations, 68 SNPs and 14 EFV-related adverse effects (AEs) were analyzed. RESULTS: Overall, 32.77% of patients reported CNS toxicity and 8.40% had concentrations above the therapeutic range. A correlation was mainly found between patients with global CNS AEs and high EFV maximum steady-state plasma concentration (p = 1.47 x 10(-6)). A preliminary analysis confirmed that CYP2B6*6 (516G>T and 785A>G) was the most highly correlated (p = 0.005) with AEs and high plasma concentrations. In a second analysis adjusting for maximum steady-state plasma concentration, suggestive genetic associations were found between BCRP 421C>A, MRP1 816G>A, 5-HT2A 102C>T and different AEs. CONCLUSION: The finding of the involvement of these SNPs in EFV toxicity opens the door for further studies to confirm their validity and for their application in the future clinical practice. Original submitted 18 February 2013; Revision submitted 17 May 2013. FAU - Sanchez Martin, Almudena AU - Sanchez Martin A AD - Pharmacy Service, University Hospital of Salamanca, Salamanca, Spain. FAU - Cabrera Figueroa, Salvador AU - Cabrera Figueroa S FAU - Cruz Guerrero, Raquel AU - Cruz Guerrero R FAU - Hurtado, Liliana Porras AU - Hurtado LP FAU - Hurle, Alfonso Dominguez-Gil AU - Hurle AD FAU - Carracedo Alvarez, Angel AU - Carracedo Alvarez A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Pharmacogenomics JT - Pharmacogenomics JID - 100897350 RN - 0 (Alkynes) RN - 0 (Anti-HIV Agents) RN - 0 (Benzoxazines) RN - 0 (Biomarkers, Pharmacological) RN - 0 (Cyclopropanes) RN - EC 1.14.14.1 (Aryl Hydrocarbon Hydroxylases) RN - EC 1.14.14.1 (CYP2B6 protein, human) RN - EC 1.14.14.1 (Cytochrome P-450 CYP2B6) RN - JE6H2O27P8 (efavirenz) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Alkynes MH - Anti-HIV Agents/administration & dosage/adverse effects MH - Aryl Hydrocarbon Hydroxylases/genetics MH - Benzoxazines/administration & dosage/*adverse effects/pharmacokinetics MH - Biomarkers, Pharmacological MH - Central Nervous System Diseases/chemically induced/*genetics MH - Cyclopropanes MH - Cytochrome P-450 CYP2B6 MH - Female MH - HIV/pathogenicity MH - HIV Infections/*drug therapy/genetics MH - Humans MH - Male MH - Middle Aged MH - *Pharmacogenetics MH - Polymorphism, Single Nucleotide EDAT- 2013/07/19 06:00 MHDA- 2014/03/19 06:00 CRDT- 2013/07/18 06:00 PHST- 2013/07/18 06:00 [entrez] PHST- 2013/07/19 06:00 [pubmed] PHST- 2014/03/19 06:00 [medline] AID - 10.2217/pgs.13.111 [doi] PST - ppublish SO - Pharmacogenomics. 2013 Jul;14(10):1167-78. doi: 10.2217/pgs.13.111.