FDA Mini-Sentinel Assessment Reinforces Safety Data of Pradaxa® (Dabigatran Etexilate Mesylate)
RIDGEFIELD, Conn., Nov. 2, 2012 /PRNewswire/ -- The U.S. Food and Drug Administration (FDA) today announced the results of a Mini-Sentinel assessment that indicates bleeding rates associated with new use of Pradaxa® (dabigatran etexilate mesylate) capsules do not appear to be higher than bleeding rates associated with new use of warfarin, which is consistent with observations from the pivotal RE-LY® trial.
The Mini-Sentinel assessment evaluated new information about the risk of serious bleeding associated with use of the anticoagulants (blood thinners) PRADAXA and warfarin. FDA investigated the actual rates of gastrointestinal bleeding (occurring in the stomach and intestines) and intracranial hemorrhage (a type of bleeding in the brain) for new users of PRADAXA compared to new users of warfarin. This assessment was done using insurance claims and administrative data from the FDA's ongoing Mini-Sentinel pilot of the Sentinel Initiative.
"The findings of the FDA Mini-Sentinel support the safety of PRADAXA when used as directed, and reaffirm the results of our pivotal RE-LY trial," said Sabine Luik, MD, PhD, Sr. Vice President, Medicine & Regulatory Affairs, US Regional Medical Director, NA, Boehringer Ingelheim Pharmaceuticals, Inc. "We believe these findings provide important information for healthcare professionals and patients as they consider the benefits and risks of anticoagulation therapy."
Boehringer Ingelheim will present data from 16 abstracts at the American Heart Association's (AHA) Scientific Sessions in Los Angeles from November 3 to 7, 2012, including new safety data on PRADAXA. These data reinforce BI's commitment to adding to the scientific body of evidence for PRADAXA and stroke prevention in NVAF.
To view the full FDA announcement, click here: http://www.fda.gov/Drugs/DrugSafety/ucm326580.htm
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
CONTRAINDICATIONS
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 & 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.
ADVERSE REACTIONS
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
In the pivotal trial, a higher rate of clinical myocardial infarction was reported in patients who received PRADAXA (0.7 per 100 patient-years for 150 mg dose) than in those who received warfarin (0.6).
For full PRADAXA prescribing information, please visit www.pradaxa.com or contact Boehringer Ingelheim's Medical and Technical Information Unit at 1-800-542-6257.
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About Boehringer Ingelheim Pharmaceuticals, Inc.
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.
The Boehringer Ingelheim group is one of the world's 20 leading pharmaceutical companies. Headquartered in Ingelheim, Germany, it operates globally with 145 affiliates and more than 44,000 employees. Since it was founded in 1885, the family-owned company has been committed to researching, developing, manufacturing and marketing novel medications of high therapeutic value for human and veterinary medicine.
As a central element of its culture, Boehringer Ingelheim pledges to act socially responsible. Involvement in social projects, caring for employees and their families, and providing equal opportunities for all employees form the foundation of the global operations. Mutual cooperation and respect, as well as environmental protection and sustainability are intrinsic factors in all of Boehringer Ingelheim's endeavors.
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PRADAXA® is a registered trademark of Boehringer Ingelheim Pharma GmbH and Co. KG and used under license. RE-LY® and RELY-ABLE® are registered service marks of Boehringer Ingelheim International GmbH and used under license.
SOURCE Pradaxa