PMID- 20235190 OWN - NLM STAT- MEDLINE DCOM- 20100628 LR - 20240320 IS - 0008-543X (Print) IS - 1097-0142 (Electronic) IS - 0008-543X (Linking) VI - 116 IP - 11 DP - 2010 Jun 1 TI - Durable responses with the metronomic rituximab and thalidomide plus prednisone, etoposide, procarbazine, and cyclophosphamide regimen in elderly patients with recurrent mantle cell lymphoma. PG - 2655-64 LID - 10.1002/cncr.25055 [doi] AB - BACKGROUND: Targeting the tumor microenvironment and angiogenesis is a novel lymphoma therapeutic strategy. The authors report safety, activity, and angiogenic profiling results with the rituximab and thalidomide plus prednisone, etoposide, procarbazine, and cyclophosphamide (RT-PEPC) regimen in patients with recurrent mantle cell lymphoma (MCL). METHODS: RT-PEPC included induction (Months 1-3) of rituximab 4 times weekly, daily thalidomide (50 mg), and PEPC followed by maintenance thalidomide (100 mg), oral PEPC titrated to the neutrophil count, and rituximab every 4 months. Endpoints included safety, efficacy, quality of life (QoL), and translational studies, including tumor angiogenic phenotyping, plasma vascular endothelial growth factor (VEGF), and circulating endothelial cells. RESULTS: Twenty-five patients were enrolled, and 22 were evaluable. The median age was 68 years (range, 52-81 years), 24 patients (96%) had stage III or IV disease, 18 patients (72%) had an International Prognostic Index (IPI) score of 3 to 5, and 20 patients (80%) had high-risk Mantle Cell International Prognostic Index (MIPI) scores. Patients had received a median of 2 previous therapies (range, 1-7 previous therapies), and 15 patients (60%) had progressed on bortezomib. At a median follow-up of 38 months, the overall response rate was 73% (complete response [CR]/unconfirmed CR rate, 32%; partial response [PR] rate, 41%; n = 22 patients), and the median progression-free survival was 10 months. Four CRs were ongoing (> or =6 months, > or =31 months, > or =48 months, and > or =50 months). Toxicities included grade 1 and 2 fatigue, rash, neuropathy, and cytopenias, including grade 1 and 2 thrombocytopenia (64%) and grade 3 and 4 neutropenia (64%). Two thromboses and 5 episodes of grade 3 or 4 infections occurred. QoL was maintained or improved. Correlative studies demonstrated tumor autocrine angiogenic loop (expression of VEGF A and VEGF receptor 1) and heightened angiogenesis and lymphangiogenesis in stroma. Plasma VEGF levels and circulating endothelial cells trended down with treatment. CONCLUSIONS: RT-PEPC had significant and durable activity in MCL with manageable toxicity and maintained QoL. Novel, low-intensity approaches warrant further evaluation, potentially as initial therapy in elderly patients. CI - (c) 2010 American Cancer Society. FAU - Ruan, Jia AU - Ruan J AD - Division of Hematology-Oncology, Center for Lymphoma and Myeloma, Weill Cornell Medical College, New York, New York, USA. FAU - Martin, Peter AU - Martin P FAU - Coleman, Morton AU - Coleman M FAU - Furman, Richard R AU - Furman RR FAU - Cheung, Ken AU - Cheung K FAU - Faye, Adam AU - Faye A FAU - Elstrom, Rebecca AU - Elstrom R FAU - Lachs, Mark AU - Lachs M FAU - Hajjar, Katherine A AU - Hajjar KA FAU - Leonard, John P AU - Leonard JP LA - eng GR - P01 HL046403/HL/NHLBI NIH HHS/United States GR - K08 HL091517/HL/NHLBI NIH HHS/United States GR - R01 HL042493-18/HL/NHLBI NIH HHS/United States GR - R01 HL090895-03/HL/NHLBI NIH HHS/United States GR - R01 HL090895/HL/NHLBI NIH HHS/United States GR - K08HL091517/HL/NHLBI NIH HHS/United States GR - R01 HL042493/HL/NHLBI NIH HHS/United States GR - P01 HL046403-19/HL/NHLBI NIH HHS/United States 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 - Cancer JT - Cancer JID - 0374236 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Monoclonal, Murine-Derived) RN - 35S93Y190K (Procarbazine) RN - 4F4X42SYQ6 (Rituximab) RN - 4Z8R6ORS6L (Thalidomide) RN - 6PLQ3CP4P3 (Etoposide) RN - 8N3DW7272P (Cyclophosphamide) RN - VB0R961HZT (Prednisone) SB - IM MH - Aged MH - Aged, 80 and over MH - Antibodies, Monoclonal MH - Antibodies, Monoclonal, Murine-Derived MH - Antineoplastic Combined Chemotherapy Protocols/adverse effects/*therapeutic use MH - Cyclophosphamide/administration & dosage MH - Etoposide/administration & dosage MH - Female MH - Humans MH - Lymphoma, Mantle-Cell/*drug therapy/psychology MH - Male MH - Middle Aged MH - Neovascularization, Pathologic MH - Prednisone/administration & dosage MH - Procarbazine/administration & dosage MH - Quality of Life MH - Recurrence MH - Rituximab MH - Thalidomide/administration & dosage MH - Treatment Outcome PMC - PMC3004744 MID - NIHMS257257 EDAT- 2010/03/18 06:00 MHDA- 2010/06/29 06:00 PMCR- 2010/12/20 CRDT- 2010/03/18 06:00 PHST- 2010/03/18 06:00 [entrez] PHST- 2010/03/18 06:00 [pubmed] PHST- 2010/06/29 06:00 [medline] PHST- 2010/12/20 00:00 [pmc-release] AID - 10.1002/cncr.25055 [doi] PST - ppublish SO - Cancer. 2010 Jun 1;116(11):2655-64. doi: 10.1002/cncr.25055.