Author(s): Duerr M, Glander P, Diekmann F, Dragun D, Neumayer HH,
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Abstract BACKGROUND AND OBJECTIVE: The clinical manifestation of angioedema ranges from minor facial edema up to life-threatening swelling of mouth and throat. Hereditary defects, drugs, and food allergies may play a role in the development of angioedema. We systematically investigated the incidence of angioedema in renal allograft recipients treated with mTOR inhibitors (mTORis). DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: All patients in the authors' electronic database who had received mTORis (n = 309) between 2000 and 2008 were identified. Of these, 137 were additionally treated with angiotensin-converting enzyme inhibitors (ACEis). RESULTS: Nine patients (6.6\%, 3.8 per 100 treatment years) developed angioedema after a mean period of 123 days under combined therapy with mTORi and ACEi. Among the remaining 172 patients on mTORi, including 119 patients treated with angiotensin-receptor blockers, only two developed angioedema (1.2\%, 0.5 per 100 treatment years, P = 0.01). In patients receiving mycophenolate and ACEi (n = 462), 10 instances of angioedema were found (2.1\%, 0.8 per 100 treatment years, P = 0.004). CONCLUSIONS: This systematic investigation demonstrated a noticeable incidence of 6.6\% angioedema under combined therapy with mTORi and ACEi in kidney transplant recipients. Treatment with either ACEi or mTORi alone resulted in a significantly lower incidence of angioedema, suggesting that this combination should be avoided.
This article was published in Clin J Am Soc Nephrol
and referenced in Journal of Cancer Clinical Trials