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Influence of ORM1 polymorphisms on the maintenance stable warfarin dosage.
MedLine Citation:
PMID:  23208322     Owner:  NLM     Status:  Publisher    
PURPOSE: ORM1 is a plasma drug binding protein. Its polymorphism rs17650 (*S>*F) has been reported to be an important factor affecting the binding ability and effect of antiretroviral protease inhibitors. The aim of this study was to determine whether the ORM1 rs17650 polymorphism also influences warfarin therapy. METHODS: A total of 191 Chinese patients with steady-dose warfarin therapy were enrolled in this study. The patients were studied for warfarin maintenance dose, the ORM1 rs17650 polymorphism, and two polymorphisms previously demonstrated to affect warfarin response [CYP2C9 rs1057910 (*3) and VKORC1 rs7294 (-1639 G>A)]. RESULTS: Warfarin dose was partially correlated with the VKORC1 rs7294, CYP2C9 rs1057910 and ORM1 rs17650 polymorphisms. Patients carrying the wild-type of these three genes (n = 96) took a mean dose of 3.0 ± 1.1 mg warfarin, which was significantly higher than that taken by the 52 *S patients (2.7 ± 0.7) and 11 *S*S patients (2.5 ± 0.6 mg) (p = 0.048). CONCLUSION: We identified ORM1 as another polymorphic gene affecting warfarin dose requirements. ORM1 *S carriers require lower maintenance doses to achieve and maintain an optimal level of anticoagulation.
Lian Sheng Wang; Jing Jing Shang; Shu Ya Shi; Yan Qing Zhang; Jian Lin; Zhi Hua Guo; Yi Chen Wang; Jie Tang; Jie Liu; Ying Zi Liu; Zhi Li; Zhi Rong Tan; Hong Hao Zhou; Hai He Jiang; Hai Tang Xie
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-4
Journal Detail:
Title:  European journal of clinical pharmacology     Volume:  -     ISSN:  1432-1041     ISO Abbreviation:  Eur. J. Clin. Pharmacol.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1256165     Medline TA:  Eur J Clin Pharmacol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Pharmacogenetics Research Institute, Institute of Clinical Pharmacology of Central South University, Changsha, China,
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