Variants in ABCB1 can predict patient response to antidepressant drugs
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For patients with depression, antidepressant drugs are a principle method of treatment, yet the rate of remission is low. The poor response to antidepressants might to some extent be attributable to inadequate penetration into the CNS, a process that is regulated at the blood–brain barrier in part by the transporter protein P-glycoprotein (P-gp), a known efflux pump for various drugs. To test this hypothesis, Uhr et al. have investigated the relationship between single-nucleotide polymorphisms (SNPs) in the gene that encodes P-gp (ABCB1) and incidence of remission in patients treated with P-gp-substrate antidepressants.
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