Title : Importance of the cytochrome P450 2D6 genotype for the drug metabolic interaction between chlorpromazine and haloperidol.

Pub. Date : 2001 Aug

PMID : 11477317






4 Functional Relationships(s)
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1 The authors analyzed the importance of five CYP2D6 genotypes, *1/ *1, *1/ *10, *10/ *10, *1/*5, and *5/*10 on the percentage of change in plasma concentrations of haloperidol and reduced haloperidol. Haloperidol cytochrome P450 family 2 subfamily D member 6 Homo sapiens
2 Patients with the CYP2D6*5 allele (n = 4) showed a significantly smaller increase in plasma concentrations of haloperidol (P < 0.05) and a slightly smaller increase in those of reduced haloperidol (P = 0.074) in response to the coadministration of chlorpromazine compared than those with the CYP2D6*1/*1 genotype (n = 8). Haloperidol cytochrome P450 family 2 subfamily D member 6 Homo sapiens
3 Patients with the CYP2D6*5 allele (n = 4) showed a significantly smaller increase in plasma concentrations of haloperidol (P < 0.05) and a slightly smaller increase in those of reduced haloperidol (P = 0.074) in response to the coadministration of chlorpromazine compared than those with the CYP2D6*1/*1 genotype (n = 8). Haloperidol cytochrome P450 family 2 subfamily D member 6 Homo sapiens
4 Those with the CYP2D6*1/*1 genotype (n = 8) showed a trend toward greater increases in plasma concentrations of haloperidol than those with other genotypes (P = 0.087). Haloperidol cytochrome P450 family 2 subfamily D member 6 Homo sapiens