title: Pharmacogenetics of antidepressants.
abstract: Up to 60% of depressed patients do not respond completely to antidepressants (ADs) and up to 30% do not respond at all. Genetic factors contribute for about 50% of the AD response. During the recent years the possible influence of a set of candidate genes as genetic predictors of AD response efficacy was investigated by us and others. They include the cytochrome P450 superfamily, the P-glycoprotein (ABCB1), the tryptophan hydroxylase, the catechol-O-methyltransferase, the monoamine oxidase A, the serotonin transporter (5-HTTLPR), the norepinephrine transporter, the dopamine transporter, variants in the 5-hydroxytryptamine receptors (5-HT1A, 5-HT2A, 5-HT3A, 5-HT3B, and 5-HT6), adrenoreceptor beta-1 and alpha-2, the dopamine receptors (D2), the G protein beta 3 subunit, the corticotropin releasing hormone receptors (CRHR1 and CRHR2), the glucocorticoid receptors, the c-AMP response-element binding, and the brain-derived neurotrophic factor. Marginal associations were reported for angiotensin I converting enzyme, circadian locomotor output cycles kaput protein, glutamatergic system, nitric oxide synthase, and interleukin 1-beta gene. In conclusion, gene variants seem to influence human behavior, liability to disorders and treatment response. Nonetheless, gene × environment interactions have been hypothesized to modulate several of these effects.
authors.affiliation: Institute of Psychiatry, University of Bologna Bologna, Italy.
authors.forename: Concetta
authors.initials: C
authors.lastname: Crisafulli
authors.forename: Chiara
authors.initials: C
authors.lastname: Fabbri
authors.forename: Stefano
authors.initials: S
authors.lastname: Porcelli
authors.forename: Antonio
authors.initials: A
authors.lastname: Drago
authors.forename: Edoardo
authors.initials: E
authors.lastname: Spina
authors.forename: Diana
authors.initials: D
authors.lastname: De Ronchi
authors.forename: Alessandro
authors.initials: A
authors.lastname: Serretti