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Phase 2 study of TAK-442, an oral factor Xa inhibitor, in patients following acute coronary syndrome.

Abstract：

:TAK-442 is an oral direct factor Xa inhibitor. We sought to determine the dose-dependent effect of TAK-442 on major bleeding when added to standard treatment in stabilised patients with acute coronary syndrome (ACS). In this phase II double-blind study, 2,753 ACS patients were randomised to TAK-442 or placebo in addition to usual care using a three-stage adaptive design. Patients were randomised to placebo in all stages, but doses of TAK-442 escalated from 10 mg BID, 20 mg twice-daily (BID), or 40 mg once-daily (QD) in stage 1; to 40 mg BID, 80 mg QD, or 80 mg BID in stage 2; and to 160 mg QD or 120 mg BID in stage 3. Study drug was started 36 hours after emergent treatment of ACS and within seven days of admission, and continued for 24 weeks. The primary endpoint was incidence of TIMI (thrombolysis in myocardial infarction) major bleeding. TIMI major bleeding incidence was low, but higher with the pooled TAK-442 doses than with placebo (17 [0.9%] vs 4 [0.5%]; p=0.47), although the difference was neither significant nor dose-dependent. However, a dose response was evident when using the modified ISTH scale. The incidence of cardiovascular events was similar among TAK-442 dose groups and placebo. When administered over a wide range of doses after an ACS event, TAK-442 treatment did not result in a dose-dependent increase in TIMI major bleeding, but increased bleeding was observed when a more sensitive bleeding scale was used. There was no evidence for efficacy.

journal_name

Thromb Haemost

journal_title

Thrombosis and haemostasis

authors

Goldstein S,Bates ER,Bhatt DL,Cao C,Holmes D,Kupfer S,Martinez F,Spaeder J,Weitz JI,Ye Z,Zannad F,AXIOM investigators.

doi

10.1160/TH13-07-0543

subject

Has Abstract

pub_date

2014-06-01 00:00:00

pages

1141-52

issue

6

eissn

0340-6245

issn

2567-689X

pii

13-07-0543

journal_volume

111

pub_type

杂志文章,多中心研究,随机对照试验

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