Bristol-Myers
Squibb Company (NYSE: BMY) and Pfizer
Inc. (NYSE: PFE) today announced the results of a pre-specified
subanalysis of the Phase 3 ARISTOTLE trial that assessed the effect of
blood pressure control on outcomes as well as the treatment effect of Eliquis
(apixaban) compared to warfarin according to blood pressure control.1
The results showed that poor blood pressure control was associated with
a substantially higher risk of stroke or systemic embolism, independent
of Eliquis or warfarin treatment. However, this subanalysis found
consistent results for Eliquis versus warfarin in reducing the
risk of stroke, regardless of blood pressure control.1 These
data will be presented Saturday, March 29, at the American College of
Cardiology’s (ACC) 63rd Annual Scientific Session in Washington, D.C.
“High blood pressure is a risk factor for stroke in patients with atrial
fibrillation. In this analysis, poorly controlled blood pressure at any
time during the trial increased the risk of stroke by approximately 50
percent. The results for apixaban compared to warfarin in reducing the
risk of stroke were consistent regardless of blood pressure,” said study
lead author Meena Rao, MD, MPH, Duke Clinical Research Institute at Duke
University Medical Center. “These data highlight the critical importance
of blood pressure control in addition to anticoagulation in helping to
lower the risk of stroke in patients with atrial fibrillation.”
In ARISTOTLE, a total of 15,916 (87.5 percent) patients had a history of
hypertension requiring treatment. During the trial, 50 percent of
patients had poorly controlled hypertension (defined as systolic blood
pressure > 140 mm Hg and/or diastolic blood pressure > 90 mm Hg) at some
point. Poorly controlled hypertension during the course of the trial was
associated with a significant 53 percent increase in the risk of stroke
or systemic embolism. Eliquis was consistent in reducing the risk
of stroke or systemic embolism versus warfarin in patients with and
without poor blood pressure control during the trial (p for interaction
= 0.97).1
In this subanalysis, the effect of Eliquis in reducing the risk
of stroke and systemic embolism versus warfarin was consistent with the
main results of the ARISTOTLE trial. Further, the effect of Eliquis
in reducing the risk of stroke and systemic embolism versus warfarin was
also consistent with the results of the ARISTOTLE trial in previously
published subanalyses of other comorbidities, including congestive heart
failure, advanced age, renal impairment and prior stroke.
A total of 11 Bristol-Myers Squibb/Pfizer alliance-sponsored abstracts,
including this ARISTOTLE subanalysis, were accepted for presentation at
the American College of Cardiology’s 63rd Annual Scientific Session.
INDICATION
ELIQUIS is indicated to reduce the risk of stroke and systemic embolism
in patients with nonvalvular atrial fibrillation.
ELIQUIS is indicated for the prophylaxis of deep vein thrombosis (DVT),
which may lead to pulmonary embolism (PE), in patients who have
undergone hip or knee replacement surgery.
IMPORTANT SAFETY INFORMATION
WARNINGS: (A) DISCONTINUING ELIQUIS IN PATIENTS WITH
NONVALVULAR ATRIAL FIBRILLATION WITHOUT ADEQUATE CONTINUOUS
ANTICOAGULATION INCREASES RISK OF STROKE, (B) SPINAL/EPIDURAL HEMATOMA
(A) Discontinuing ELIQUIS places patients at an increased risk of
thrombotic events. An increased rate of stroke was observed following
discontinuation of ELIQUIS in clinical trials in patients with
nonvalvular atrial fibrillation. If anticoagulation with ELIQUIS must be
discontinued for a reason other than pathological bleeding, coverage
with another anticoagulant should be strongly considered.
(B) When neuraxial anesthesia (epidural/spinal anesthesia) or spinal
puncture is employed, patients anticoagulated or scheduled to be
anticoagulated with low molecular weight heparins, heparinoids, or
Factor Xa inhibitors for prevention of thromboembolic complications are
at risk of developing an epidural or spinal hematoma which can result in
long-term or permanent paralysis.
The risk of these events may be increased by the use of indwelling
epidural catheters for administration of analgesia or by the concomitant
use of drugs affecting hemostasis such as nonsteroidal anti-inflammatory
drugs (NSAIDs), platelet aggregation inhibitors, or other
anticoagulants. The risk also appears to be increased by traumatic or
repeated epidural or spinal puncture.
Monitor patients for signs and symptoms of neurologic impairment. If
neurologic compromise is noted, urgent treatment is necessary. Consider
the potential benefit versus risk before neuraxial intervention in
patients anticoagulated or to be anticoagulated for thromboprophylaxis
CONTRAINDICATIONS
-
Active pathological bleeding
-
Severe hypersensitivity reaction to ELIQUIS (apixaban) (e.g.,
anaphylactic reactions)
WARNINGS AND PRECAUTIONS
-
Increased Risk of Stroke with Discontinuation of ELIQUIS in
Patients with Nonvalvular Atrial Fibrillation: Discontinuing
ELIQUIS in the absence of adequate alternative anticoagulation
increases the risk of thrombotic events. An increased rate of stroke
was observed during the transition from ELIQUIS to warfarin in
clinical trials in patients with nonvalvular atrial fibrillation. If
ELIQUIS must be discontinued for a reason other than pathological
bleeding, consider coverage with another anticoagulant.
-
Bleeding Risk: ELIQUIS increases the risk of bleeding and can
cause serious, potentially fatal bleeding. Concomitant use of drugs
affecting hemostasis increases the risk of bleeding including aspirin
and other anti-platelet agents, other anticoagulants, heparin,
thrombolytic agents, SSRIs, SNRIs, and NSAIDs. Patients should be made
aware of signs or symptoms of blood loss and instructed to immediately
report to an emergency room. Discontinue ELIQUIS in patients with
active pathological hemorrhage.
-
There is no established way to reverse the anticoagulant effect of
apixaban, which can be expected to persist for at least 24 hours after
the last dose (i.e., about two half-lives). A specific antidote for
ELIQUIS is not available. Hemodialysis does not appear to have a
substantial impact on apixaban exposure. Protamine sulfate and vitamin
K would not be expected to affect the anticoagulant activity of
apixaban. There is no experience with antifibrinolytic agents
(tranexamic acid, aminocaproic acid) in individuals receiving
apixaban. There is neither scientific rationale for reversal nor
experience with systemic hemostatics (desmopressin and aprotinin) in
individuals receiving apixaban. Use of procoagulant reversal agents
such as prothrombin complex concentrate, activated prothrombin complex
concentrate, or recombinant factor VIIa may be considered but has not
been evaluated in clinical studies. Activated charcoal reduces
absorption of apixaban thereby lowering apixaban plasma concentrations.
-
Prosthetic Heart Valves: The safety and efficacy of ELIQUIS
have not been studied in patients with prosthetic heart valves and is
not recommended in these patients.
ADVERSE REACTIONS
The most common and most serious adverse reactions reported with ELIQUIS
(apixaban) were related to bleeding.
TEMPORARY INTERRUPTION FOR SURGERY AND OTHER INTERVENTIONS
ELIQUIS should be discontinued at least 48 hours prior to elective
surgery or invasive procedures with a moderate or high risk of
unacceptable or clinically significant bleeding. ELIQUIS should be
discontinued at least 24 hours prior to elective surgery or invasive
procedures with a low risk of bleeding or where the bleeding would be
noncritical in location and easily controlled. Bridging anticoagulation
during the 24 to 48 hours after stopping ELIQUIS and prior to the
intervention is not generally required. ELIQUIS should be restarted
after the surgical or other procedures as soon as adequate hemostasis
has been established.
DRUG INTERACTIONS
-
Strong Dual Inhibitors of CYP3A4 and P-gp: Inhibitors of CYP3A4
and P-gp increase exposure to apixaban and increase the risk of
bleeding. For patients receiving 5 mg twice daily, the dose of ELIQUIS
should be decreased when it is coadministered with drugs that are
strong dual inhibitors of CYP3A4 and P-gp (e.g., ketoconazole,
itraconazole, ritonavir, or clarithromycin). In patients already
taking ELIQUIS at a dose of 2.5 mg twice daily, avoid coadministration
with strong dual inhibitors of CYP3A4 and P-gp.
-
Strong Dual Inducers of CYP3A4 and P-gp: Avoid concomitant use
of ELIQUIS with strong dual inducers of CYP3A4 and P-gp (e.g.,
rifampin, carbamazepine, phenytoin, St. John’s wort) because such
drugs will decrease exposure to apixaban and increase the risk of
stroke.
-
Anticoagulants and Antiplatelet Agents: Coadministration of
antiplatelet agents, fibrinolytics, heparin, aspirin, and chronic
NSAID use increases the risk of bleeding. APPRAISE-2, a
placebo-controlled clinical trial of apixaban in high-risk post-acute
coronary syndrome patients treated with aspirin or the combination of
aspirin and clopidogrel, was terminated early due to a higher rate of
bleeding with apixaban compared to placebo.
PREGNANCY CATEGORY B
There are no adequate and well-controlled studies of ELIQUIS in pregnant
women. Treatment is likely to increase the risk of hemorrhage during
pregnancy and delivery. ELIQUIS should be used during pregnancy only if
the potential benefit outweighs the potential risk to the mother and
fetus.
Please see full Prescribing Information, including BOXED WARNINGS and
Medication Guide, available at www.bms.com.
About ARISTOTLE
The ARISTOTLE study was designed to evaluate the efficacy and safety of Eliquis
versus warfarin for the prevention of stroke or systemic embolism. In
ARISTOTLE, 18,201 patients were randomized (9,120 patients to Eliquis
and 9,081 to warfarin). ARISTOTLE was an active-controlled, randomized,
double-blind, multi-national trial in patients with nonvalvular atrial
fibrillation or atrial flutter, and at least one additional risk factor
for stroke. Patients were randomized to treatment with Eliquis 5
mg orally twice daily (or 2.5 mg twice daily in selected patients,
representing 4.7 percent of all patients) or warfarin (target INR range
2.0-3.0), and followed for a median of 1.8 years.
About Atrial Fibrillation
Atrial fibrillation is the most common cardiac arrhythmia (irregular
heartbeat). It is estimated that approximately 5.8 million Americans and
six million individuals in Europe have atrial fibrillation. The lifetime
risk of developing atrial fibrillation is estimated to be approximately
25 percent for individuals 40 years of age or older. One of the most
serious medical concerns for individuals with atrial fibrillation is the
increased risk of stroke, which is five times higher in people with
atrial fibrillation than those without atrial fibrillation. In fact, 15
percent of all strokes are attributable to atrial fibrillation in the
U.S. Additionally, strokes due to atrial fibrillation are more
burdensome than strokes due to other causes. Atrial fibrillation-related
strokes are more severe than other strokes, with an associated 30-day
mortality of 24 percent and a 50 percent likelihood of death within one
year in patients who are not treated with an antithrombotic.
About Eliquis®
Eliquis (apixaban) is an oral selective Factor Xa inhibitor. By
inhibiting Factor Xa, a key blood clotting protein, Eliquis
decreases thrombin generation and blood clot formation. Eliquis
is approved to reduce the risk of stroke and systemic embolism in
patients with nonvalvular atrial fibrillation and for prophylaxis of
DVT, which may lead to PE, in patients who have undergone hip or knee
replacement surgery.
About the Bristol-Myers Squibb/Pfizer Collaboration
In 2007, Pfizer and Bristol-Myers Squibb entered into a worldwide
collaboration to develop and commercialize Eliquis, an oral
anticoagulant discovered by Bristol-Myers Squibb. This global alliance
combines Bristol-Myers Squibb's long-standing strengths in
cardiovascular drug development and commercialization with Pfizer’s
global scale and expertise in this field.
About Bristol-Myers Squibb
Bristol-Myers Squibb is a global biopharmaceutical company whose mission
is to discover, develop and deliver innovative medicines that help
patients prevail over serious diseases. For more information, please
visit http://www.bms.com
or follow us on Twitter at http://twitter.com/bmsnews.
About Pfizer Inc.: Working together for a healthier world™
At Pfizer, we apply science and our global resources to bring therapies
to people that extend and significantly improve their lives. We strive
to set the standard for quality, safety and value in the discovery,
development and manufacture of health care products. Our global
portfolio includes medicines and vaccines as well as many of the world's
best-known consumer health care products. Every day, Pfizer colleagues
work across developed and emerging markets to advance wellness,
prevention, treatments and cures that challenge the most feared diseases
of our time. Consistent with our responsibility as one of the world's
premier innovative biopharmaceutical companies, we collaborate with
health care providers, governments and local communities to support and
expand access to reliable, affordable health care around the world. For
more than 150 years, Pfizer has worked to make a difference for all who
rely on us. To learn more, please visit us at www.pfizer.com.
1 Rao M, et al. Poorly Controlled Blood Pressure is
Independently Associated with a 50% Higher Risk of Stroke or Systemic
Embolism in Patients with Atrial Fibrillation. Poster presented at:
American College of Cardiology 2014 Scientific Session; March 29, 2014;
Washington, DC.
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