Document Detail

Myelodysplastic and myeloproliferative disorders of childhood: a study of 167 patients.
MedLine Citation:
PMID:  9885207     Owner:  NLM     Status:  MEDLINE    
Myelodysplastic syndromes (MDS) and myeloproliferative syndromes (MPS) of childhood are a heterogeneous group of clonal disorders of hematopoiesis with overlapping clinical features and inconsistent nomenclature. Although a number of genetic conditions have been associated with MDS and MPS, the overall contribution of inherited predispositions is uncertain. We report a retrospective study examining clinical features, genetic associations, and outcomes in 167 children with MDS and MPS. Of these patients, 48 had an associated constitutional disorder. One hundred one patients had adult-type myelodysplastic syndrome (A-MDS), 60 had juvenile myelomonocytic leukemia (JMML), and 6 infants with Down syndrome had a transient myeloproliferative syndrome (TMS). JMML was characterized by young age at onset and prominent hepatosplenomegaly, whereas patients with A-MDS were older and had little or no organomegaly. The most common cytogenetic abnormalities were monosomy 7 or del(7q) (53 cases); this was common both in patients with JMML and those with A-MDS. Leukemic transformation was observed in 32% of patients, usually within 2 years of diagnosis. Survival was 25% at 16 years. Favorable prognostic features at diagnosis included age less than 2 years and a hemoglobin F level of less than 10%. Older patients tended to present with an adult-type MDS that is accommodated within the French-American-British system. In contrast, infants and young children typically developed unique disorders with overlapping features of MDS and MPS. Although the type and intensity of therapy varied markedly in this study, the overall outcome was poor except in patients with TMS.
S Luna-Fineman; K M Shannon; S K Atwater; J Davis; M Masterson; J Ortega; J Sanders; P Steinherz; V Weinberg; B J Lange
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Blood     Volume:  93     ISSN:  0006-4971     ISO Abbreviation:  Blood     Publication Date:  1999 Jan 
Date Detail:
Created Date:  1999-04-20     Completed Date:  1999-04-20     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  7603509     Medline TA:  Blood     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  459-66     Citation Subset:  AIM; IM    
University of California, San Francisco, San Francisco, CA 94143, USA.
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MeSH Terms
Child, Preschool
Chromosome Aberrations
Chromosomes, Human, Pair 7
Fetal Hemoglobin / metabolism
Gene Deletion
Infant, Newborn
Leukemia / etiology
Myelodysplastic Syndromes* / diagnosis,  genetics,  therapy
Myeloproliferative Disorders* / diagnosis,  genetics,  therapy
Retrospective Studies
Survival Rate
Grant Support
Reg. No./Substance:
9034-63-3/Fetal Hemoglobin

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