PMID- 20225334 OWN - NLM STAT- MEDLINE DCOM- 20100525 LR - 20191210 IS - 0008-543X (Print) IS - 1097-0142 (Electronic) IS - 0008-543X (Linking) VI - 116 IP - 10 DP - 2010 May 15 TI - Alemtuzumab by continuous intravenous infusion followed by subcutaneous injection plus rituximab in the treatment of patients with chronic lymphocytic leukemia recurrence. PG - 2360-5 LID - 10.1002/cncr.24958 [doi] AB - BACKGROUND: Monoclonal antibodies may be used more effectively in combination. A previous study of intravenous (iv) bolus alemtuzumab plus rituximab in patients with chronic lymphocytic leukemia (CLL) recurrence produced a response rate of 54% after a 4-week treatment period. METHODS: To optimize dose, schedule, and route of alemtuzumab, a study was designed exploring continuous intravenous infusion (civ) followed by subcutaneous (sc) alemtuzumab together with weekly iv rituximab in patients with previously treated CLL. RESULTS: Data from 40 patients with a median age of 59 years, and a median of 3 prior regimens (range, 1-8 regimens) were evaluable. Approximately 64% of patients were fludarabine-refractory. Seven patients (18%) achieved a complete response (CR), 4 (10%) a nodular partial response (nPR), and 10 (25%) a partial response for an overall response rate of 53%. Of 11 major responses (CR, nPR), 8 occurred after cycle 1. Response rates were highest in blood (94%), followed by liver/spleen (82%), bone marrow (68%), and lymph nodes (51%). The combination did not generate unexpected toxicities. Cytomegalovirus (CMV) reactivations occurred in 6 patients (15%) and responded well to anti-CMV therapy. High titers of anti-idiotype antibodies after sc alemtuzumab were demonstrated in 1 patient, but remained without clinical sequelae. CONCLUSIONS: The combination of civ/sc alemtuzumab plus rituximab has activity in some patients with recurrent/refractory CLL and maximum response is achieved after 1 cycle (4 weeks) in 73% of patients. Further exploration in other settings of CLL together with accompanying pharmacokinetic studies is recommended. CI - (c) 2010 American Cancer Society. FAU - Faderl, Stefan AU - Faderl S AD - Department of Leukemia, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, USA. sfader@mdanderson.org FAU - Ferrajoli, Alessandra AU - Ferrajoli A FAU - Wierda, William AU - Wierda W FAU - O'Brien, Susan AU - O'Brien S FAU - Lerner, Susan AU - Lerner S FAU - Keating, Michael J AU - Keating MJ LA - eng GR - P30 CA016672/CA/NCI NIH HHS/United States PT - Clinical Trial PT - Journal Article PL - United States TA - Cancer JT - Cancer JID - 0374236 RN - 0 (Antibodies, Anti-Idiotypic) RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (Antibodies, Monoclonal, Murine-Derived) RN - 0 (Antibodies, Neoplasm) RN - 3A189DH42V (Alemtuzumab) RN - 4F4X42SYQ6 (Rituximab) SB - IM EIN - Cancer. 2010 Aug 15;116(16):3982. Dosage error in article text MH - Adult MH - Aged MH - Alemtuzumab MH - Antibodies, Anti-Idiotypic/metabolism MH - Antibodies, Monoclonal/*administration & dosage MH - Antibodies, Monoclonal, Humanized MH - Antibodies, Monoclonal, Murine-Derived MH - Antibodies, Neoplasm/*administration & dosage MH - Antineoplastic Combined Chemotherapy Protocols/adverse effects/*therapeutic use MH - Drug Administration Schedule MH - Female MH - Humans MH - Infections/etiology MH - Infusions, Intravenous MH - Injections, Subcutaneous MH - Leukemia, Lymphocytic, Chronic, B-Cell/*drug therapy MH - Male MH - Middle Aged MH - Recurrence MH - Rituximab MH - Treatment Outcome PMC - PMC4476388 MID - NIHMS676526 COIS- Conflict Of Interest Disclosures: The authors made no disclosures. EDAT- 2010/03/13 06:00 MHDA- 2010/05/26 06:00 PMCR- 2015/06/22 CRDT- 2010/03/13 06:00 PHST- 2010/03/13 06:00 [entrez] PHST- 2010/03/13 06:00 [pubmed] PHST- 2010/05/26 06:00 [medline] PHST- 2015/06/22 00:00 [pmc-release] AID - 10.1002/cncr.24958 [doi] PST - ppublish SO - Cancer. 2010 May 15;116(10):2360-5. doi: 10.1002/cncr.24958.