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  • Title: Therapy of sclerodermatous chronic graft-versus-host disease with mammalian target of rapamycin inhibitors.
    Author: Jedlickova Z, Burlakova I, Bug G, Baurmann H, Schwerdtfeger R, Schleuning M.
    Journal: Biol Blood Marrow Transplant; 2011 May; 17(5):657-63. PubMed ID: 20696263.
    Abstract:
    This retrospective study analyzes 34 patients with severe sclerodermatous chronic graft-versus-host disease (cGVHD) treated with inhibitors of the mammalian target of rapamycin (mTOR-I). Twelve patients received mTOR-I as monotherapy and 22 a combination therapy. Four patients also received extracorporal photopheresis. mTOR-I were applied as first-line therapy (n = 15) or in refractory disease (n = 19). Drug doses were adjusted to low therapeutical levels (3-8 ng/mL). Six and 20 patients had a complete and a partial response, respectively, with an overall response rate of 76%. Two additional patients had stable disease. Six refractory patients required alternative therapy. Comedication, especially steroids, could be tapered and stopped in a significant number of patients. No difference in response was observed in everolimus- and sirolimus-treated patients. Major adverse events possibly related to mTOR-I were hyperlipidemia and impaired wound healing. Two patients developed thrombotic microangiopathy. Eight patients died, 5 of the nonresponders (cGVHD; n = 3, infection; n = 2) and 3 of the responders (relapse of the underlying malignancy; n = 1, secondary malignancy; n = 1, unknown cause; n = 1). Twenty-six of the 34 patients remain alive, 18 still on therapy with mTOR-I. Median follow-up for surviving patients is 723 days (range 88-1621). The overall survival at 3 years since mTOR-I is 72%. In conclusion, mTOR-I seem to be an effective and well-tolerated treatment option for patients with sclerodermatous cGVHD.
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