Published in:
Open Access
01-12-2017 | Research article
IgMk paraprotein from gammopathy patient can bind to cardiolipin and interfere with coagulation assay: a case report
Authors:
Xin-yao Wu, Yu-feng Yin, Jia-lin Teng, Li-wei Zhang, Cheng-de Yang
Published in:
BMC Immunology
|
Issue 1/2017
Login to get access
Abstract
Background
The monoclonal gammopathies are a group of plasma-cell proliferative disorders characterized by the secretion of monoclonal immunoglobulin (M protein or paraprotein). Some rare cases have revealed the specific affinity of paraprotein as autoantibody. Here we report a patient with monoclonal gammopathy of undetermined significance (MGUS) accompanied by a remarkable increase of anticardiolipin antibody (aCL) and an extensively decreased coagulation factor activity, however, without any clinical signs of antiphospholipid syndrome (APS) and bleeding.
Results
Our further investigation indicated that IgMκ paraprotein of this patient possessed an antibody activity against phospholipids so as to bind to cardiolipin and interfere with coagulation assay in vitro.
Conclusions
This case might be indicative that an abnormality of coagulation tests, disturbed by IgMκ paraprotein, does not predict a risk of bleeding in this patient.