Premium
Autoimmune thrombocytopenia in Waldenström's macroglobulinemia
Author(s) -
Owen R.G.,
Lubenko A.,
Savage J.,
Parapia L.A.,
Jack A.S.,
Morgan G.J.
Publication year - 2001
Publication title -
american journal of hematology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.456
H-Index - 105
eISSN - 1096-8652
pISSN - 0361-8609
DOI - 10.1002/1096-8652(200102)66:2<116::aid-ajh1026>3.0.co;2-v
Subject(s) - medicine , autoimmune thrombocytopenia , autoimmune hemolytic anemia , waldenstrom macroglobulinemia , macroglobulinemia , immunology , cold agglutinin , gammopathy , cold agglutinin disease , incidence (geometry) , platelet , antibody , gastroenterology , monoclonal , lymphoma , monoclonal antibody , multiple myeloma , physics , optics
Autoimmune phenomena are well‐recognised complications of Waldenström's macroglobulinemia (WM) and IgM monoclonal gammopathy. Peripheral neuropathy and cold agglutinin hemolytic anemia are the most common reported and occur in 5–10% of patients. Autoimmune thrombocytopenia has been rarely reported in WM and its incidence is not known. In this study we report the case of a 67‐year‐old man who presented with autoimmune thrombocytopenia who was subsequently found to have WM. Laboratory investigation demonstrated that platelet‐associated IgM (PAIgM) but not PAIgG was clearly elevated compared to normal controls. In addition the patient's serum reacted strongly with a panel of donor platelets analysed with an indirect platelet immunofluorescence assay utilising an anti‐IgM secondary antibody. Glycoprotein specificity could not however be demonstrated by ELISA techniques for platelet glycoproteins IIbIIIa, IaIIa, IbIXa, and IV. We also reviewed the case records of 104 additional cases of WM diagnosed at our institution between 5/93 and 5/99. Three further cases with clinically significant autoimmune thrombocytopenia were identified. The overall incidence of autoimmune thrombocytopenia (4/105, 3.8%) in this cohort of patients was similar to the incidence of peripheral neuropathy (7/105, 6.7%) and cold agglutinins (3/105, 2.9%). Am. J. Hematol. 66:116–119, 2001. © 2001 Wiley‐Liss, Inc.