Tofacitinib-Induced Acute Pancreatitis in a Patient with Rheumatoid Arthritis: A Case Report and Review of the Literature

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BACKGROUND: Acute Pancreatitis (AP) is an uncommon complication that rarely occurs during Rheumatoid Arthritis (RA). Among the varied etiologies of AP, Drug-induced Pancreatitis (DIP) remains a rare entity and a rather challenging condition. A large panel of drugs have been reported to cause pancreatitis; however, there are no cases of tofacitinib-induced pancreatitis reported in the literature. CASE PRESENTATION: We have, herein, reported the case of a Tunisian 58-year-old woman with a four-year history of RA who experienced two episodes of AP; the first one occurred on the second day of a 3-day series of methylprednisolone intravenous injections, and the second episode occurred on the sixth-day of tofacitinib administration. Each time, she presented acute abdominal pain with characteristic radiation to the back. Symptoms resolved spontaneously once the suspected drug was discontinued. In the event of a negative investigation, including abdominal ultrasonography and magnetic resonance imaging, and assessment of albumin, calcemia, triglyceridemia, serum ferritin, and IgG4 levels, DIP was the most likely diagnosis. CONCLUSION: Although DIP is still a rare condition, it remains serious with an increased risk of mortality. We intended to alert clinicians that in addition to the known side effects of tofacitinib, pancreatitis may be induced by this drug, especially in predisposed patients.

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