PMID- 28421390 OWN - NLM STAT- MEDLINE DCOM- 20171005 LR - 20221207 IS - 1865-3774 (Electronic) IS - 0925-5710 (Linking) VI - 106 IP - 2 DP - 2017 Aug TI - Ofatumumab combined with chlorambucil for previously untreated chronic lymphocytic leukemia: a phase I/II, open-label study in Japan. PG - 240-247 LID - 10.1007/s12185-017-2233-1 [doi] AB - Elderly/comorbid patients with chronic lymphocytic leukemia (CLL) require low-toxicity treatments. Internationally, the standard treatment for such patients is chlorambucil and an anti-CD20 therapy; however, chlorambucil is not approved in Japan. The aim of the present study was to evaluate the safety, efficacy and pharmacokinetics of ofatumumab in combination with chlorambucil in Japanese patients with previously untreated CLL who were inappropriate for fludarabine-based therapy. Ten patients were enrolled and treated in this study, all of whom received at least one dose of the study drugs. The tolerability of the treatment was confirmed initially with three patients. The overall response rate was 50%, as determined by the Independent Review Committee (IRC) with computerized tomography. All patients were alive at follow-up, and only one patient had progressive disease. The most common treatment-related adverse events (AEs) were thrombocytopenia (n = 10), neutropenia (n = 9) and rash (n = 6). One grade 3 serious AE related to the study drug occurred (hypoxia). The results indicate that ofatumumab combined with chlorambucil is an effective treatment for Japanese CLL patients, with a manageable safety profile. FAU - Hatake, Kiyohiko AU - Hatake K AD - Department of Hematology and Oncology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan. khatake@jfcr.or.jp. FAU - Ogura, Michinori AU - Ogura M AD - Department of Hematology and Oncology, Nagoya Daini Red Cross Hospital, Nagoya, Aichi, Japan. AD - Department of Hematology, Tokai Central Hospital, Kakamigahara, Gifu, Japan. FAU - Takada, Kohichi AU - Takada K AD - Department of Medical Oncology and Hematology, Sapporo Medical University School of Medicine, Sapporo, Japan. FAU - Taniwaki, Masafumi AU - Taniwaki M AD - Division of Hematology and Oncology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan. FAU - Zhang, Fanghong AU - Zhang F AD - Novartis Pharma K.K., Tokyo, Japan. FAU - Fujita, Taizo AU - Fujita T AD - Novartis Pharma K.K., Tokyo, Japan. FAU - Ando, Kiyoshi AU - Ando K AD - Department of Hematology and Oncology, Tokai University School of Medicine, Isehara, Kanagawa, Japan. LA - eng PT - Clinical Trial, Phase I PT - Clinical Trial, Phase II PT - Journal Article DEP - 20170418 PL - Japan TA - Int J Hematol JT - International journal of hematology JID - 9111627 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Monoclonal, Humanized) RN - 18D0SL7309 (Chlorambucil) RN - M95KG522R0 (ofatumumab) SB - IM MH - Aged MH - Aged, 80 and over MH - Antibodies, Monoclonal/administration & dosage/adverse effects/pharmacokinetics MH - Antibodies, Monoclonal, Humanized MH - Antineoplastic Combined Chemotherapy Protocols/adverse effects/*therapeutic use MH - Asian People MH - Chlorambucil/administration & dosage/adverse effects/pharmacokinetics MH - Exanthema/chemically induced MH - Female MH - Humans MH - Japan MH - Leukemia, Lymphocytic, Chronic, B-Cell/*drug therapy MH - Male MH - Middle Aged MH - Neutropenia/chemically induced MH - Thrombocytopenia/chemically induced MH - Treatment Outcome OTO - NOTNLM OT - Chlorambucil OT - Chronic lymphocytic leukemia OT - Ofatumumab OT - Untreated EDAT- 2017/04/20 06:00 MHDA- 2017/10/06 06:00 CRDT- 2017/04/20 06:00 PHST- 2016/12/27 00:00 [received] PHST- 2017/04/04 00:00 [accepted] PHST- 2017/03/30 00:00 [revised] PHST- 2017/04/20 06:00 [pubmed] PHST- 2017/10/06 06:00 [medline] PHST- 2017/04/20 06:00 [entrez] AID - 10.1007/s12185-017-2233-1 [pii] AID - 10.1007/s12185-017-2233-1 [doi] PST - ppublish SO - Int J Hematol. 2017 Aug;106(2):240-247. doi: 10.1007/s12185-017-2233-1. Epub 2017 Apr 18.