Immunomodulatory Therapy Does Not Increase the Risk of Cancer in Persons With Inflammatory Bowel Disease and a History of Extracolonic Cancers.

Immunosuppressant therapies (IMTs; thiopurines, anti-tumor necrosis factor agents) may influence the immunologic control of cancer and might facilitate the spread and recurrence of cancer. This study assesses the impact of the use of IMTs on the development of incident cancers (recurrent or new) in patients with inflammatory bowel disease (IBD) and a history of malignancy.Patients with IBD included in the ENEIDA registry with a history of cancer without being exposed to IMTs were identified and retrospectively reviewed and compared regarding further treatment with IMTs or not by means of a log-rank test.Overall, 520 patients with previous extracolonic cancer naive to IMTs before the diagnos…