PMID- 24182827 OWN - NLM STAT- MEDLINE DCOM- 20140616 LR - 20211203 IS - 1873-2623 (Electronic) IS - 0041-1345 (Linking) VI - 45 IP - 9 DP - 2013 Nov TI - Painful crural ulcerations and proteinuria as complications after several years of therapy with mTOR inhibitors in the renal allograft recipient: a case report. PG - 3418-20 LID - S0041-1345(13)00713-6 [pii] LID - 10.1016/j.transproceed.2013.06.002 [doi] AB - BACKGROUND: Proliferation signal inhibitors (mammalian target of rapamycin [mTOR]) are a class of immunosuppressive drugs with a new mechanism of action and safety profile, different form calcineurin inhibitors. However, their use is limited because of an high incidence of adverse reactions, the majority of which occur within the first 6 months after commencing treatment. In this paper, we report a patient with substantial proteinuria and painful crural ulcerations that appeared after a few years of mTOR inhibitor therapy and necessitated their withdrawal. CASE REPORT: A 43-year-old man who received a cadaveric kidney was converted to sirolimus from cyclosporine after being diagnosed with adenocarcinoma and carcinoma clarocellulare of his own removed cystic kidney. After 5.5 years of fairly good tolerance of the treatment, proteinuria and painful crural ulcerations appeared. Because of the progressive character of the adverse reactions and no satisfactory results of the applied treatment, mTOR therapy was discontinued. Proteinuria was reduced, pain improved, and the ulcerations healed. CONCLUSIONS: This case report indicates that adverse reactions may develop as a result of mTOR inhibitor use even after many years of good tolerance of the drug and they may necessitate its withdrawal. CI - Copyright (c) 2013 Elsevier Inc. All rights reserved. FAU - Jozwiak, L AU - Jozwiak L AD - Department of Nephrology, Medical University, Lublin, Poland. Electronic address: lucyna.jozwiak@interia.pl. FAU - Ksiazek, A AU - Ksiazek A LA - eng PT - Case Reports PT - Journal Article PL - United States TA - Transplant Proc JT - Transplantation proceedings JID - 0243532 RN - 0 (Immunosuppressive Agents) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Adult MH - Humans MH - Immunosuppressive Agents/*adverse effects MH - *Kidney Transplantation MH - Leg Ulcer/*chemically induced MH - Male MH - TOR Serine-Threonine Kinases/*antagonists & inhibitors MH - Transplantation, Homologous EDAT- 2013/11/05 06:00 MHDA- 2014/06/17 06:00 CRDT- 2013/11/05 06:00 PHST- 2013/04/27 00:00 [received] PHST- 2013/06/28 00:00 [accepted] PHST- 2013/11/05 06:00 [entrez] PHST- 2013/11/05 06:00 [pubmed] PHST- 2014/06/17 06:00 [medline] AID - S0041-1345(13)00713-6 [pii] AID - 10.1016/j.transproceed.2013.06.002 [doi] PST - ppublish SO - Transplant Proc. 2013 Nov;45(9):3418-20. doi: 10.1016/j.transproceed.2013.06.002.