Abstract:Relations between cytogenetic status, FAB‐classification and an abnormal subpopulation of myeloperoxydase (MPO)‐deficient polymorphonuclears (PMN) in 45 patients with myelodysplastic syndrome (MDS) are reported. Clonal abnormalities were demonstrated in 85% of the patients, with a lower incidence in the RA+ group (refractory anaemia with ring sideroblasts) compared to the others (p = 0.004). In 12 patients a spontaneous progression in cytogenetic aberrations occurred and in 7 of these (60%) a simultaneous prog… Show more
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