Both Germany and France have now suspended the marketing of Actos (pioglitazone) due to concerns of a link between Actos and bladder cancer. Though we have known about bladder cancer concerns for some time, these recent concerns about the bladder cancer link stem from a recent report analyzing the FDA’s Adverse Event Reporting System (AERS), which found that 93 cases of cancer were recorded between 2004 and 2009 in patients treated with antidiabetic drugs, of which 31 patients were treated with pioglitazone, representing a statistically significant increased risk of bladder cancer (ROR 4.30, 95% confidence interval, 2.82-6.52; P less than 0.0001).
Interestingly, the FDA announced that it was going to look into the link between Actos and bladder cancer only a few days before it made its final decision on what to do with Avandia (as if they didn’t know about the Actos cancer risk before the July 2010 advisory board).
Despite the many things you have heard about Avandia, back in July 2010, the FDA decided to severely restrict the use of Avandia for three reasons: Read more »
*This blog post was originally published at ACP Internist*