title: High incidence of tuberculosis after alemtuzumab treatment in Hong Kong Chinese patients.
abstract: Twenty-seven patients received the anti-CD52 monoclonal antibody alemtuzumab for hematologic malignancies and autoimmune cytopenias in a tuberculosis-endemic area. Seven patients developed mycobacterium tuberculosis (TB) infections (median: 4, 1-24, months from alemtuzumab). The actuarial 1- and 2-year incidence of TB was 31% and 45%. All patients had severe depression of lymphocyte counts subsequent to alemtuzumab treatment, and tuberculosis was extra-pulmonary in three cases. All seven patients had received prior chemotherapy/immunosuppression and tuberculosis had not occurred until alemtuzumab was administered. Patients receiving alemtuzumab in areas endemic for tuberculosis should have careful initial evaluation of TB exposure, so that prophylactic antibiotics might be administered. Tuberculosis reactivation should be considered for unexplained fever and symptoms after alemtuzumab treatment.
authors: Department of Medicine, Queen Mary Hospital, Hong Kong, China. auwing@hotmail.com
authors: Wing-Yan
authors: WY
authors: Au
authors: Anskar Y H
authors: AY
authors: Leung
authors: Eric W C
authors: EW
authors: Tse
authors: Winnie W W
authors: WW
authors: Cheung
authors: Tony W H
authors: TW
authors: Shek
authors: Yok-Lam
authors: YL
authors: Kwong
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000074323:Alemtuzumab; D000911:Antibodies, Monoclonal / Q000627:therapeutic use*; D061067:Antibodies, Monoclonal, Humanized; D000912:Antibodies, Neoplasm / Q000627:therapeutic use*; D000970:Antineoplastic Agents / Q000627:therapeutic use*; D044466:Asian People; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006723:Hong Kong / Q000453:epidemiology; D006801:Humans; D007166:Immunosuppressive Agents; D015994:Incidence; D008232:Lymphoproliferative Disorders / Q000150:complications / Q000188:drug therapy*; D008297:Male; D008875:Middle Aged; D009169:Mycobacterium tuberculosis / Q000472:pathogenicity*; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014376:Tuberculosis / Q000453:epidemiology* / Q000382:microbiology / Q000401:mortality
chemical_list: D000911:Antibodies, Monoclonal; D061067:Antibodies, Monoclonal, Humanized; D000912:Antibodies, Neoplasm; D000970:Antineoplastic Agents; D007166:Immunosuppressive Agents; D012333:RNA, Messenger; D000074323:Alemtuzumab