According to the Louisiana Record (5/17/16), a woman from Washington state filed a lawsuit against Takeda Pharmaceuticals and Eli Lilly, for negligence and strict products liability. The plaintiff argues she used Actos between January 2011 and December 2011, and was later diagnosed with bladder cancer. The lawsuit alleges that the defendants knew about the potential link between Actos and bladder cancer but failed to warn patients about the serious risks. The lawsuit is case number 6:16-cv-00581, in the US District Court for the Western District of Louisiana.
As of May 16, 2016, there were 4,596 lawsuits consolidated for pretrial proceedings in MDL 2299, In Re Actos (Pioglitazone) Products Liability Litigation.
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“The results of this large population based study indicate that pioglitazone is associated with an increased risk of bladder cancer,” researchers wrote. “The absence of an association with rosiglitazone suggests that the increased risk is drug specific and not a class effect.”
Studies have produced conflicting reports as to whether or not Actos is linked to an increased risk of bladder cancer. Although the overall risk of bladder cancer is low, patients say they were not adequately warned about the risk when they were prescribed Actos.
In addition to lawsuits in the United States, there have also been lawsuits filed in Canada, alleging patients were harmed by the use of Actos.