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FDA Public Health Advisory for Crestor (rosuvastatin)
Astra-Zeneca Pharmaceuticals today released a revised package insert
for Crestor (rosuvastatin) for use in the 22 member states of the European
Union (EU). The changes to the European labeling are in response to postmarketing
spontaneous adverse event reports in patients receiving Crestor and highlight
certain patient populations who may be at an increased risk for serious
muscle toxicity (myopathy) associated with Crestor use, especially at
the highest approved dose of 40 mg. These risk factors and many of the
recommendations for how to minimize the risk of myopathy are already captured
in the FDA approved labeling for Crestor in the U.S. FDA is alerting physicians
to the need to carefully read the Crestor product label and follow the
recommendations for starting doses, dose adjustments, and maximum daily
doses to minimize the risk of myopathy in individual patients.
Crestor, a member of a class of cholesterol-lowering drugs commonly referred
to as ?statins?, was approved in the U.S. in August 2003,
based on review of an extensive clinical database involving approximately
12,000 patients. At that time, the FDA identified in the WARNINGS section
of the product label those patients whose increased baseline risk for
myopathy warranted more careful monitoring when prescribed Crestor. The
U.S. approved labeling included a specific section titled, ?Myopathy/Rhabdomyolysis?,
which states that patients who are of advanced age (³ 65 years),
have hypothyroidism, and/or renal insufficiency should be considered to
have a greater risk for developing myopathy while receiving a statin.
Physicians are warned to prescribe Crestor with caution in these patients,
particularly at higher doses, as the risk of myopathy increases with higher
drug levels.
In addition, the U.S. approved labeling for Crestor states that increased
rosuvastatin drug levels were observed in certain sub-populations of patients
(e.g., subgroups of Asians, patients concomitantly using cyclosporine
and gemfibrozil), conferring increased risk of myopathy. Because of these
findings, the FDA required Astra-Zeneca to make available in the U.S.
a 5-mg dose that could be used in patients requiring less aggressive cholesterol-lowering
or who were taking concurrent cyclosporine. The maximum recommended dose
in the FDA-approved label is limited to 10 mg daily in patients with severe
renal impairment or who are also taking gemfibrozil.
FDA has received reports of rhabdomyolysis in association with Crestor,
as it has with other drugs in the statin class. In ongoing fashion, we
are evaluating these reports of adverse muscle effects with regard to
clinical severity and apparent relationship to the drug. FDA is comparing
the frequency of reporting of muscle injury with Crestor to that with
other statins, given differences in prescribing rates for the different
drugs. Pending the evaluation of the recent Crestor safety experience,
FDA is not proposing to change the US labeling for Crestor, but does want
to re-emphasize to physicians to the importance of carefully following
the recommendations in the current product label. Analysis of accumulating
safety data in the U.S. and worldwide will be considered in any future
labeling changes for Crestor, and to make recommendations on risk management
plans for Crestor.
Healthcare professionals prescribing Crestor are reminded of the following
key safety messages from the Crestor label: start doses and maintenance doses
of drug should be based on individual cholesterol goals and apparent risks for
side-effects; all patients should be informed that statins can cause muscle
injury, which in rare, severe cases, can cause kidney damage and other organ
failure that are potentially life-threatening; and patients should be told to
promptly report to their physician signs or symptoms of muscle pain and weakness,
malaise, fever, dark urine, nausea, or vomiting.
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