Document Detail

The safety and efficacy of clopidogrel versus ticlopidine in Japanese stroke patients: combined results of two Phase III, multicenter, randomized clinical trials.
MedLine Citation:
PMID:  19288047     Owner:  NLM     Status:  MEDLINE    
Two Phase III studies comparing the safety and efficacy of clopidogrel with ticlopidine as antiplatelet agents for the secondary prevention of vascular events in patients with prior stroke were performed in Japan. Both studies were randomized, double-blind, double-dummy comparative trials with the primary objective of comparing the clinical safety of treatment with either clopidogrel or ticlopidine for up to 12 months. The secondary objective was to assess the incidence of a combined efficacy endpoint of cerebral infarction, myocardial infarction, and vascular death. Patients with prior stroke were recruited during July 1996-February 1998 and September 2001-November 2003 at centers across Japan. The results of the two studies were combined in this analysis. There were 1,869 patients in the safety population (clopidogrel, 941; ticlopidine, 928). Significantly, fewer patients experienced a safety event in the clopidogrel group than in the ticlopidine group (p < 0.001; hazard ratio, 0.610; 95% confidence interval 0.529, 0.703). Almost twice as many patients in the ticlopidine group (25.6%) experienced hepatic dysfunction than in the clopidogrel group (13.4%). There were 1,862 patients evaluable for efficacy (clopidogrel, 939; ticlopidine, 923). There was no significant difference in the incidence of the combined efficacy endpoint between clopidogrel (2.6% of patients) and ticlopidine (2.5%). Clopidogrel was better tolerated than ticlopidine. There was no difference in the efficacy of the two agents with regard to the secondary prevention of vascular events in patients with prior stroke. This was the first combined analysis of direct comparison of clopidogrel with ticlopidine in the clinical setting.
Shinichiro Uchiyama; Yasuo Fukuuchi; Takenori Yamaguchi
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Publication Detail:
Type:  Clinical Trial, Phase III; Journal Article; Multicenter Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't     Date:  2009-03-14
Journal Detail:
Title:  Journal of neurology     Volume:  256     ISSN:  1432-1459     ISO Abbreviation:  J. Neurol.     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-06-22     Completed Date:  2009-09-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0423161     Medline TA:  J Neurol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  888-97     Citation Subset:  IM    
Department of Neurology, Tokyo Women's Medical University School of Medicine, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan.
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MeSH Terms
Brain Infarction / drug therapy,  epidemiology
Double-Blind Method
Follow-Up Studies
Liver / drug effects
Middle Aged
Myocardial Infarction / drug therapy,  epidemiology
Platelet Aggregation Inhibitors / adverse effects,  therapeutic use*
Proportional Hazards Models
Stroke / drug therapy*,  epidemiology
Ticlopidine / adverse effects,  analogs & derivatives*,  therapeutic use*
Treatment Outcome
Reg. No./Substance:
0/Platelet Aggregation Inhibitors; 55142-85-3/Ticlopidine; 90055-48-4/clopidogrel

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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