Published Online
on April 14, 2005

A more recent version of this article appeared on May 1, 2005

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Submitted on February 15, 2005
Accepted on February 17, 2005

Gavestinel Does Not Improve Outcome After Acute Intracerebral Hemorrhage. An Analysis From the GAIN International and GAIN Americas Studies

E. Clarke Haley Jr MD^*; John L.P. Thompson PhD; Bruce Levin PhD; Stephen Davis MD; Kennedy R. Lees MD; John G. Pittman MS; Janet T. DeRosa MPH; Paul Ordronneau PhD; Devin L. Brown MD; Ralph L. Sacco MD; for the GAIN Americas and GAIN International Investigators

^* To whom correspondence should be addressed. E-mail: ech{at}virginia.edu.

Background and Purpose--Glycine Antagonist in Neuroprotection (GAIN) International and GAIN Americas trials were prospectively designed, randomized, placebo-controlled trials of gavestinel, a glycine-site antagonist and putative neuroprotectant drug administered within 6 hours of suspected ischemic or hemorrhagic stroke. Both trials reported that gavestinel was ineffective in ischemic stroke. This analysis reports the results in those with primary intracerebral hemorrhage.

Methods--The primary hypothesis was that gavestinel treatment did not alter outcome, measured at 3 months by the Barthel Index (BI), from acute intracerebral hemorrhage, based on pooled results from both trials. The BI scores were divided into 3 groups: 95 to 100 (independent), 60 to 90 (assisted independence), and 0 to 55 (dependent) or dead.

Results--In total, 3450 patients were randomized in GAIN International (N=1804) and GAIN Americas (N=1646). Of these, 571 were ultimately identified to have spontaneous intracerebral hematoma on baseline head computerized tomography scan. The difference in distribution of trichotomized BI scores at 3 months between gavestinel and placebo was not statistically significant (P=0.09). Serious adverse events were reported at similar rates in the 2 treatment groups.

Conclusions--These observations from the combined GAIN International and GAIN Americas trials suggest that gavestinel is not of substantial benefit or harm to patients with primary intracerebral hemorrhage. These findings are similar to results previously reported in patients with ischemic stroke.

Key words: hemorrhage • neuroprotection • stroke

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