Actos (pioglitazone): Ongoing Safety Review - Potential Increased Risk of Bladder Cancer
Audience: Endocrinology, Family Practice, Urology
ISSUE: FDA notified healthcare professionals and patients that the Agency is reviewing data from an ongoing, ten-year epidemiological study designed to evaluate whether Actos (pioglitazone) is associated with an increased risk of bladder cancer. Findings from studies in animals and humans suggest this is a potential safety risk that needs further study. At this time, FDA has not concluded that Actos increases the risk of bladder cancer. Its review is ongoing, and the Agency will update the public when it has additional information.
BACKGROUND: The drug manufacturer, Takeda, conducted a planned analysis of the study data at the five-year mark, and submitted their results to FDA. Overall, there was no statistically significant association between Actos exposure and bladder cancer risk. However, further analyses were also performed looking at how long patients were on Actos and the total amount of the drug they received during that time. An increased risk of bladder cancer was observed among patients with the longest exposure to Actos, as well as in those exposed to the highest cumulative dose of Actos.
RECOMMENDATIONS: Healthcare professionals should continue to follow the recommendations in the drug label when prescribing Actos. Patients should continue taking Actos unless told otherwise by their healthcare professional. Patients who are concerned about the possible risks associated with using Actos should talk to their healthcare professional.
Additional Information for Patients, Information for Healthcare Professionals, and a Data Summary are provided in the Drug Safety Communication.
Healthcare professionals and patients are encouraged to report adverse events or side effects related to the use of these products to the FDA's MedWatch Safety Information and Adverse Event Reporting Program:
- Complete and submit the report Online: www.fda.gov/MedWatch/report.htm
- Download form or call 1-800-332-1088 to request a reporting form, then complete and return to the address on the pre-addressed form, or submit by fax to 1-800-FDA-0178