Boehringer Ingelheim Pharmaceuticals, Inc. Release: Pradaxa(R) (dabigatran etexilate mesylate) U.S. Label Now Affirms Superior Reduction in Ischemic and Hemorrhagic Stroke Versus Warfarin in Patients with Non-Valvular Atrial Fibrillation
Published: Jun 06, 2012
RIDGEFIELD, Conn., June 6, 2012 /PRNewswire/ -- Boehringer Ingelheim Pharmaceuticals, Inc. today announced that the Pradaxa® (dabigatran etexilate mesylate) capsules prescribing information has been updated to affirm that "PRADAXA 150mg twice daily was superior in reducing ischemic and hemorrhagic strokes relative to warfarin." The update to the "Clinical Studies" section is based on the results of the pivotal RE-LY® trial conducted in 18,000 patients with non-valvular atrial fibrillation (NVAF).
Clinical experience with PRADAXA continues to grow with more than 3.2 million prescriptions for PRADAXA 150mg and 75mg written for more than 600,000 NVAF patients in the U.S. since its approval in October 2010. Additionally, nearly 20,000 cardiologists and more than 90,000 other specialists or primary care physicians have prescribed PRADAXA through April 2012.
"PRADAXA is an important treatment option for many patients with NVAF as it is the only treatment compared to warfarin that provides a superior reduction in ischemic and hemorrhagic stroke, which is the main goal of anticoagulation treatment," said John Smith, M.D., Ph.D., senior vice president for clinical development and medical affairs, Boehringer Ingelheim Pharmaceuticals, Inc. "The inclusion of specific wording about the superiority of PRADAXA over warfarin in the prescribing information is important in defining the benefit it provides when physicians are considering treatment options for this patient population."
The launch of PRADAXA has been the most successful in Boehringer Ingelheim history and is among the pharmaceutical industry's top launches in the last decade. Formulary uptake has been strong for PRADAXA, which is now included on formularies that insure about 90 percent of covered lives in the U.S. PRADAXA also is on formulary with all 50 of the top heart and heart surgery hospitals in the U.S., as identified by U.S. News and World Report.
Boehringer Ingelheim remains focused on patient safety and is committed to further investigating PRADAXA through research such as the long-term safety study RELY-ABLE, which will be presented later this year. Additionally, Boehringer Ingelheim recently launched phase II of the GLORIA-AF patient registry, which is designed to better characterize the use of antithrombotic treatments to reduce the risk of stroke in patients with NVAF.
"Boehringer Ingelheim is committed to the AFib community and is continuing the work and support of educating healthcare professionals about the benefits and risks associated with PRADAXA," said Greg Behar, president and CEO, Boehringer Ingelheim Pharmaceuticals, Inc. "It is important for physicians and patients to discuss the important clinical benefit of superior stroke risk reduction with PRADAXA versus warfarin when considering treatment options."
In the RE-LY trial, PRADAXA 150mg twice daily was superior in reducing ischemic and hemorrhagic stroke compared to warfarin in patients with NVAF. The risk of major bleeds was similar with PRADAXA 150mg and warfarin across major subgroups with the exception of age, where there was a trend towards a higher incidence of major bleeding with PRADAXA for patients > 75 years of age. There were higher rates of major gastrointestinal (GI) bleeding and total GI bleeding with PRADAXA 150mg than warfarin. The incidence of intracranial bleeding, or bleeding inside the skull, was 59 percent lower with PRADAXA 150mg than warfarin in this patient population.
About Pradaxa® (dabigatran etexilate mesylate) Capsules
Indications and Usage
PRADAXA is indicated to reduce the risk of stroke and systemic embolism in patients with non-valvular atrial fibrillation.
IMPORTANT SAFETY INFORMATION ABOUT PRADAXA
PRADAXA is contraindicated in patients with active pathological bleeding and patients with a known serious hypersensitivity reaction (e.g., anaphylactic reaction or anaphylactic shock) to PRADAXA.
WARNINGS AND PRECAUTIONS
Risk of Bleeding:
- PRADAXA increases the risk of bleeding and can cause significant and, sometimes, fatal bleeding. Promptly evaluate any signs or symptoms of blood loss, such as a drop in hemoglobin and/or hematocrit or hypotension. Discontinue PRADAXA in patients with active pathological bleeding.
- Risk factors for bleeding include medications that increase the risk of bleeding (e.g., anti-platelet agents, heparin, fibrinolytic therapy, and chronic use of NSAIDs). PRADAXA's anticoagulant activity and half-life are increased in patients with renal impairment.
- A specific reversal agent for dabigatran is not available. Dabigatran can be dialyzed (removal of about 60% of drug over 2-3 hours) but data supporting this is limited. Activated prothrombin complex concentrates, recombinant Factor VIIa, or concentrates of factors II, IX or X may be considered but their use has not been evaluated. Protamine sulfate and vitamin K are not expected to affect dabigatran anticoagulant activity. Consider administration of platelet concentrates where thrombocytopenia is present or long-acting antiplatelet drugs have been used.
Temporary Discontinuation of PRADAXA
Discontinuing PRADAXA for active bleeding, elective surgery, or invasive procedures places patients at an increased risk of stroke. Minimize lapses in therapy.
Effect of P-gp Inducers & Inhibitors on Dabigatran Exposure
The concomitant use of PRADAXA with P-gp inducers (e.g., rifampin) reduces exposure to dabigatran and should generally be avoided. P-gp inhibition and impaired renal function are major independent factors in increased exposure to dabigatran. Concomitant use of P-gp inhibitors in patients with renal impairment is expected to increase exposure of dabigatran compared to either factor alone.
- For patients with moderate renal impairment (CrCl 30-50 mL/min), consider reducing the dose of PRADAXA to 75 mg twice daily when dronedarone or systemic ketoconazole is coadministered with PRADAXA.
- For patients with severe renal impairment (CrCl 15-30 mL/min), avoid concomitant use of PRADAXA and P-gp inhibitors.
In the pivotal trial comparing PRADAXA to warfarin, the most frequent adverse reactions leading to discontinuation of PRADAXA were bleeding and gastrointestinal (GI) events. PRADAXA 150 mg resulted in a higher rate of major GI bleeds and any GI bleeds compared to warfarin. In patients > 75 years of age, the risk of major bleeding may be greater with PRADAXA than with warfarin. Patients on PRADAXA 150 mg had an increased incidence of GI adverse reactions. These were commonly dyspepsia (including abdominal pain upper, abdominal pain, abdominal discomfort, and epigastric discomfort) and gastritis-like symptoms (including GERD, esophagitis, erosive gastritis, gastric hemorrhage, hemorrhagic gastritis, hemorrhagic erosive gastritis, and GI ulcer). Drug hypersensitivity reactions were reported in <0.1% of patients receiving PRADAXA.
OTHER MEASURES EVALUATED
The risk of myocardial infarction was numerically greater in patients who received PRADAXA 150 mg than in those who received warfarin.
For full PRADAXA prescribing information, please visit www.pradaxa.com or contact Boehringer Ingelheim's Drug Information Unit at 1-800-542-6257.
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Boehringer Ingelheim Pharmaceuticals, Inc., based in Ridgefield, CT, is the largest U.S. subsidiary of Boehringer Ingelheim Corporation (Ridgefield, CT) and a member of the Boehringer Ingelheim group of companies.
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