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Another Study Finds Higher Risk of Bladder Cancer with Actos

May 16, 2011 | Parker Waichman LLP

People  who take Actos may face a higher risk of developing bladder cancer, according to a newly published study. The study, which involved a review of adverse event reports associated with various diabetes drugs, found that Actos patients faced a "disproportionate" risk of bladder  cancer compared to those treated with the other medications.

Actos has been linked to bladder cancer in the past. The label for Actos already contains information about bladder cancer risk in the “Precautions – Carcinogenesis, Mutagenesis, Impairment of Fertility” section. accepted equal   Also, two 3-year controlled clinical studies of Actos showed patients who used Actos were at higher risk of bladder cancer compared to those who used other medications. 

Just last year, the FDA  announced it had begun a safety review of the drug after preliminary results of a study conducted by Takeda Pharmaceuticals, the  maker of Actos, indicted there was an increased risk of bladder cancer in patients with the longest exposure to Actos and in those with the highest cumulative dose of the drug. At the time, however, the agency stressed it had not concluded that  Actos  caused the increase in the risk of bladder cancer.

This new study consisted of a review of adverse events associated with diabetes drugs, including Actos,  reported to the FDA between 2004 and 2009. During that time, the FDA received 500,000 such reports, 138 of which involved bladder cancer.  And while bladder cancer was reported with several medications,  a fifth of the bladder cancer cases occurred in Actos patients.

appoint caveat i of the University of Bologna in Italy told Reuters, “not of an actual risk.”  Poluzzi called for more study of this possible  Actos side effect.

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