|
Danish Study Supports
Efficacy
of Endeavor®
Drug-Eluting Stent
At Nine Months, Endeavor Drug-Eluting
Stent Associated with a Target Lesion
Revascularization Rate of 4.0
Percent, Consistent with ENDEAVOR Clinical Program
|
 |
October 16, 2008 / Washington DC --
Medtronic, Inc. (NYSE: MDT) announced today the target lesion revascularization
(TLR) rate for the company’s Endeavor® drug-eluting stent in the
real-world Danish trial, SORT OUT III, was 4.0 percent. This result
at nine months is consistent with the ENDEAVOR-Five real-world study,
which reported an overall TLR of 4.5 percent at 12 months. The rates
of myocardial infarction in the SORT OUT III study were very low
for both the Endeavor (1.4 percent) and Cypher (0.5 percent) stents.
The rate of stent thrombosis in SORT OUT III for Endeavor was 1.2
percent (ARC definite), consistent with typical rates of stent thrombosis
for both drug-eluting and bare-metal stents after nine months of
patient follow up.
Surprisingly, however, the SORT-OUT III study at nine months reported a 1.0 percent TLR rate for Cypher, considerably less than the 4.5 percent TLR reported in the similar SORT OUT II study, Galloe et al, JAMA 2008, previously conducted in the same five centers by the same group. In addition, the stent thrombosis rate for the Cypher stent was 0.2 percent, compared to 1.7 percent reported in the SORT OUT II study. Dr.
Leif Thuesen, a study investigator stated, “We were very surprised by these results - specifically those for Cypher and especially compared to the SORT OUT II data.” It was also noted during the presentation that late stent thrombosis becomes meaningful as a safety signal only after one year. Dr. Lassen, a co-investigator, commented on the safety outcomes in the study, which reported stent thrombosis for Endeavor of 1.2 percent at nine months, “This is only half the story, as we saw with ENDEAVOR IV, we expect late catch up with Cypher.” Dr. Lassen’s
comments acknowledge that while early events were also seen with
Endeavor in the ENDEAVOR IV study at 12 months, there were no instances
of late stent thrombosis with Endeavor after 369 days, in follow
up to two years. Medtronic soon
will complete enrollment in the PROTECT clinical study. The PROTECT
study is the largest randomized trial focusing on the safety
of drug-eluting stents. This 8,800-patient trial is being conducted
at 200 centers worldwide and will compare Medtronic’s Endeavor
stent and Cypher, made by Cordis, using key safety endpoints
and other clinically relevant outcomes. The primary endpoint
for the PROTECT study will be overall stent thrombosis at three
years.
About Medtronic
Medtronic, Inc.
headquartered in Minneapolis, is the global leader in
medical technology – alleviating pain, restoring health
and extending life for millions of people around the
world.
Any
forward-looking statements are subject to risks
and uncertainties such as those described in Medtronic’s
Annual Report on Form 10-K for the year ended April
25, 2008. Actual results may differ materially
from anticipated results.
Source: Medtronic, Inc.
|