Genetic variations of human CYP2D6 in the Chinese Han population.

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Qian JC, Xu XM, Hu GX, Dai DP, Xu RA, Hu LM, Li FH, Zhang XH, Yang JF, Cai JP

Genetic variations of human CYP2D6 in the Chinese Han population.

Pharmacogenomics. 2013 Nov;14(14):1731-43. doi: 10.2217/pgs.13.160.

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24192122 [ View in PubMed

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Abstract

AIM: The purpose of this study was to determine the genetic polymorphisms of the CYP2D6 gene and to elucidate the allele distribution pattern in the Chinese Han population. MATERIALS & METHODS: We used PCR and bidirectional sequencing methods to analyze all nine exons of the CYP2D6 gene in 2129 unrelated, healthy Chinese Han subjects from two geographical locations in China: the northern and southern regions. RESULTS: In total, 165 mutated sites were detected in 2129 participants, of which 67 sites were reported for the first time. Among these novel mutation sites, 22 were nonsynonymous and 12 were named as novel alleles (*87-*93, *94A, *94B and *95-*98) by the Human CYP Allele Nomenclature Committee. In addition, 29 previously reported alleles and 84 genotypes were also detected in 1954 volunteers. Functional prediction of novel variants revealed that eight variants might have a deleterious effect on CYP2D6. Linkage disequilibrium analysis and tagSNP selection were performed separately. By using these methods, distinct differences were found between the two regions. CONCLUSION: This study provides the most comprehensive data concerning CYP2D6 polymorphisms in the Chinese Han population to date and increases the number of known alleles; these findings may greatly contribute to the development of personalized medicine for the Chinese Han population.

DrugBank Data that Cites this Article

Pharmaco-genomics

Drug	Interacting Gene/Enzyme	Allele name	Genotypes	Defining change(s)	Type(s)	Description	Details
Metoprolol	Cytochrome P450 2D6 Gene symbol: CYP2D6 UniProt: P10635	CYP2D6*92	Not Available	1995delC	ADR Inferred	Increased risk of slow heart rate (bradycardia)	Details
Venlafaxine	Cytochrome P450 2D6 Gene symbol: CYP2D6 UniProt: P10635	CYP2D6*92	Not Available	1995delC	Effect Inferred	Poor drug metabolizer, lower dose requirements, nausea, vomiting and diarrhea	Details
Codeine	Cytochrome P450 2D6 Gene symbol: CYP2D6 UniProt: P10635	CYP2D6*92	Not Available	1995delC	Effect Inferred	Poor drug metabolizer, lower dose requirements	Details
Amitriptyline	Cytochrome P450 2D6 Gene symbol: CYP2D6 UniProt: P10635	CYP2D6*92	Not Available	1995delC	Effect Inferred	Poor drug metabolizer, lower dose requirements, higher risk for adverse side effects	Details
Imipramine	Cytochrome P450 2D6 Gene symbol: CYP2D6 UniProt: P10635	CYP2D6*92	Not Available	1995delC	Effect Inferred	Poor drug metabolizer, lower dose requirements, higher risk for adverse side effects	Details
Dextromethorphan	Cytochrome P450 2D6 Gene symbol: CYP2D6 UniProt: P10635	CYP2D6*92	Not Available	1995delC	Effect Inferred	Poor drug metabolizer, lower dose requirements	Details
Nortriptyline	Cytochrome P450 2D6 Gene symbol: CYP2D6 UniProt: P10635	CYP2D6*92	Not Available	1995delC	Effect Inferred	Poor drug metabolizer, lower dose requirements, higher risk for adverse side effects	Details
Tamoxifen	Cytochrome P450 2D6 Gene symbol: CYP2D6 UniProt: P10635	CYP2D6*92	Not Available	1995delC	Effect Inferred	Poor response to drug treatment, shorter time to relapse	Details
Desipramine	Cytochrome P450 2D6 Gene symbol: CYP2D6 UniProt: P10635	CYP2D6*92	Not Available	1995delC	Effect Inferred	Poor drug metabolizer, lower dose requirements, higher risk for adverse side effects	Details
Clomipramine	Cytochrome P450 2D6 Gene symbol: CYP2D6 UniProt: P10635	CYP2D6*92	Not Available	1995delC	Effect Inferred	Poor drug metabolizer, lower dose requirements, higher risk for adverse side effects	Details
Atomoxetine	Cytochrome P450 2D6 Gene symbol: CYP2D6 UniProt: P10635	CYP2D6*92	Not Available	1995delC	Effect Inferred	Poor drug metabolizer, increased side effects.	Details