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Low C 3 levels is associated with neutropenia in a proportion of patients with myelodysplastic syndrome: retrospective analysis
Author(s) -
Kim KiJo,
Kwok SeungKi,
Park YunJung,
Kim WanUk,
Cho ChulSoo
Publication year - 2012
Publication title -
international journal of rheumatic diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 41
eISSN - 1756-185X
pISSN - 1756-1841
DOI - 10.1111/j.1756-185x.2012.01704.x
Subject(s) - cytopenia , medicine , myelodysplastic syndromes , serology , clinical significance , immunology , retrospective cohort study , bone marrow , antibody
Background Myelodysplastic syndrome ( MDS ) is a clonal disorder characterized by ineffective hematopoiesis. MDS patients are known to manifest overt rheumatic manifestations and have distinct immunological abnormalities but their clinical significance has yet to be elucidated. Aim To investigate the prevalence of autoimmune or rheumatic manifestations in the course of MDS and serological immunological abnormalities which have been detected at presentation and to determine their clinical significance. Methods One hundred and eleven patients diagnosed as having MSD between 2001 and 2004 were identified. Their clinical and serologic features on medical records were retrospectively reviewed. Results Of 111 patients with MDS , 25 showed 27 autoimmune or rheumatic manifestations. On dividing the cohort into two groups, with and without autoimmune or rheumatic manifestations, the two groups were not statistically different in survival. Serological immunological abnormalities were observed by variable rate, but had no association with compatible clinical manifestations. C 3 hypocomplementemia was observed as high as 45.9% and the C 3 hypocomplementemic subgroup had more severe cytopenia of red cell and white cell lineages and was dominant in the low‐risk I nternational P rognostic S coring S ystem category. Conclusions Our data indicates that a distinct subset of MDS , demonstrating complement activation, has more severe cytopenias, which suggest complement activation contributes to the pathogenesis of autoimmune cytopenia in MDS .