To date, haloperidol has been widely used to treat patients with acute alcoholic hallucinosis. There is strong evidence that haloperidol therapy is commonly associated with adverse drug reactions (ADRs). The 392A > G polymorphism of the CYP3A4*1B gene (rs2740574) is known to affect the metabolism rates of haloperidol; hence it correlates with both therapy efficacy and safety parameters.
Objective: The study objective was to investigate the effect of 392A > G polymorphism of the CYP3A4*1B gene (rs2740574) on the efficacy and safety profiles of haloperidol in patients with acute alcoholic hallucinosis.
Methods: This study enrolled 100 male patients suffering from acute alcoholic hallucinosis (mean age 41.4 ± 14.4 years). The efficacy profile of haloperidol was assessed using the PANSS (Positive and Negative Syndrome Scale) validated psychometric scale. The safety profile of therapy was assessed with the UKU Side-Effect Rating Scale and the SAS (Simpson-Angus Scale for Extrapyramidal Symptoms) scale. Genotyping was performed using the real-time polymerase chain reaction (Real-time PCR).
Results: There were no statistically significant results for the efficacy rates (dynamics of the PANSS score: AA genotype -14.00 [-16.00; -12.00], AG genotype -13.00 [-14.00; -10.50], p = 0.306). Similarly, there was no statistically significant difference in the safety profiles (dynamics of the UKU score: AA genotype - 9.00 [7.00; 13.00], AG genotype - 8.50 [7.25; 10.50], p = 0.620; dynamics of the SAS score: AA genotype -12.00 [10.00; 16.75], AG genotype - 10.00 [10.00; 12.25], p = 0.321).
Conclusion: The study demonstrated that the 392A > G polymorphism of the CYP3A4*1B gene (rs2740574) in patients with acute alcoholic hallucinosis does not affect the efficacy and safety rates of haloperidol therapy.
Keywords: CYP3A4; acute alcoholic hallucinosis; adverse drug reactions; haloperidol; personalized medicine; pharmacogenetics.
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