PMID- 16951235 OWN - NLM STAT- MEDLINE DCOM- 20071130 LR - 20220317 IS - 1078-0432 (Print) IS - 1078-0432 (Linking) VI - 12 IP - 17 DP - 2006 Sep 1 TI - Phase I/II study of the mammalian target of rapamycin inhibitor everolimus (RAD001) in patients with relapsed or refractory hematologic malignancies. PG - 5165-73 AB - PURPOSE: Everolimus (RAD001, Novartis), an oral derivative of rapamycin, inhibits the mammalian target of rapamycin (mTOR), which regulates many aspects of cell growth and division. A phase I/II study was done to determine safety and efficacy of everolimus in patients with relapsed or refractory hematologic malignancies. EXPERIMENTAL DESIGN: Two dose levels (5 and 10 mg orally once daily continuously) were evaluated in the phase I portion of this study to determine the maximum tolerated dose of everolimus to be used in the phase II study. RESULTS: Twenty-seven patients (9 acute myelogenous leukemia, 5 myelodysplastic syndrome, 6 B-chronic lymphocytic leukemia, 4 mantle cell lymphoma, 1 myelofibrosis, 1 natural killer cell/T-cell leukemia, and 1 T-cell prolymphocytic leukemia) received everolimus. No dose-limiting toxicities were observed. Grade 3 potentially drug-related toxicities included hyperglycemia (22%), hypophosphatemia (7%), fatigue (7%), anorexia (4%), and diarrhea (4%). One patient developed a cutaneous leukocytoclastic vasculitis requiring a skin graft. One patient with refractory anemia with excess blasts achieved a major platelet response of over 3-month duration. A second patient with refractory anemia with excess blasts showed a minor platelet response of 25-day duration. Phosphorylation of downstream targets of mTOR, eukaryotic initiation factor 4E-binding protein 1, and/or, p70 S6 kinase, was inhibited in six of nine patient samples, including those from the patient with a major platelet response. CONCLUSIONS: Everolimus is well tolerated at a daily dose of 10 mg daily and may have activity in patients with myelodysplastic syndrome. Studies of everolimus in combination with therapeutic agents directed against other components of the phosphatidylinositol 3-kinase/Akt/mTOR pathway are warranted. FAU - Yee, Karen W L AU - Yee KW AD - Authors' Affiliations: Departments of Leukemia and Blood and Marrow Transplantation, University of Texas M.D. Anderson Cancer Center, Houston, Texas. FAU - Zeng, Zhihong AU - Zeng Z FAU - Konopleva, Marina AU - Konopleva M FAU - Verstovsek, Srdan AU - Verstovsek S FAU - Ravandi, Farhad AU - Ravandi F FAU - Ferrajoli, Alessandra AU - Ferrajoli A FAU - Thomas, Deborah AU - Thomas D FAU - Wierda, William AU - Wierda W FAU - Apostolidou, Efrosyni AU - Apostolidou E FAU - Albitar, Maher AU - Albitar M FAU - O'Brien, Susan AU - O'Brien S FAU - Andreeff, Michael AU - Andreeff M FAU - Giles, Francis J AU - Giles FJ LA - eng GR - P01 CA55164/CA/NCI NIH HHS/United States PT - Clinical Trial, Phase I PT - Clinical Trial, Phase II PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - Clin Cancer Res JT - Clinical cancer research : an official journal of the American Association for Cancer Research JID - 9502500 RN - 0 (Adaptor Proteins, Signal Transducing) RN - 0 (Cell Cycle Proteins) RN - 0 (EIF4EBP1 protein, human) RN - 0 (Phosphoproteins) RN - 9HW64Q8G6G (Everolimus) RN - EC 2.7.- (Protein Kinases) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (Ribosomal Protein S6 Kinases, 70-kDa) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - W36ZG6FT64 (Sirolimus) SB - IM MH - Adaptor Proteins, Signal Transducing/antagonists & inhibitors MH - Administration, Oral MH - Adolescent MH - Adult MH - Aged MH - Cell Cycle Proteins MH - Dose-Response Relationship, Drug MH - Drug Administration Schedule MH - Drug-Related Side Effects and Adverse Reactions MH - Everolimus MH - Female MH - Humans MH - Killer Cells, Natural/immunology MH - Leukemia, Lymphocytic, Chronic, B-Cell/*drug therapy MH - Leukemia, Myeloid, Acute/*drug therapy MH - Leukemia, Prolymphocytic/*drug therapy MH - Leukemia, T-Cell/*drug therapy MH - Lymphoma, Mantle-Cell/*drug therapy MH - Male MH - Maximum Tolerated Dose MH - Middle Aged MH - Myelodysplastic Syndromes/*drug therapy MH - Phosphoproteins/antagonists & inhibitors MH - Phosphorylation MH - Protein Kinases/drug effects/metabolism MH - Recurrence MH - Ribosomal Protein S6 Kinases, 70-kDa/antagonists & inhibitors MH - Signal Transduction/drug effects MH - Sirolimus/administration & dosage/adverse effects/*analogs & derivatives/therapeutic use MH - T-Lymphocytes/immunology MH - TOR Serine-Threonine Kinases MH - Treatment Outcome MH - Vasculitis, Leukocytoclastic, Cutaneous/chemically induced EDAT- 2006/09/05 09:00 MHDA- 2007/12/06 09:00 CRDT- 2006/09/05 09:00 PHST- 2006/09/05 09:00 [pubmed] PHST- 2007/12/06 09:00 [medline] PHST- 2006/09/05 09:00 [entrez] AID - 12/17/5165 [pii] AID - 10.1158/1078-0432.CCR-06-0764 [doi] PST - ppublish SO - Clin Cancer Res. 2006 Sep 1;12(17):5165-73. doi: 10.1158/1078-0432.CCR-06-0764.