Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1 Suppl 1
pubmed:dateCreated
2003-4-8
pubmed:abstractText
Essential thrombocythemia (ET), one of the chronic myeloproliferative disorders, exposes individuals to significantly increased risk for thrombohemorrhagic complications. Epidemiologic data indicate that the two most prominent risk factors for thrombosis are age greater than 60 years or a history of or presentation with thrombosis at any age. Age is an important factor in selecting among therapeutic options, as the agents used to treat ET may contribute to acute leukemic transformation and other secondary malignancies. Whether or not hydroxyurea (HU) carries these risks is controversial and unresolved, but the uncertainty is a basis for avoiding it in young patients. Alternatives to HU that have established efficacy in lowering platelet counts in ET are interferon and anagrelide. Both are highly effective in reducing platelet numbers, and are apparently not associated with leukemogenicity or mutagenicity. However, approximately 30% of patients find interferon intolerable for long-term therapy. Anagrelide offers the advantage of oral dosing and long-term effectiveness at managing platelet counts. A recent long-term study of young ET patients treated with anagrelide found that all thrombohemorrhagic events occurred in patients with platelet counts greater than 0.4 x 10(9)/L, adding to the evidence that reduction of platelet counts to normal may be required for optimal control of risk.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0037-1963
pubmed:author
pubmed:copyrightInfo
Copyright 2003 Elsevier Inc. All rights reserved.
pubmed:issnType
Print
pubmed:volume
40
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
22-5
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Indications for lowering platelet numbers in essential thrombocythemia.
pubmed:affiliation
Department of Hematology, Ospedali Riuniti de Bergamo, Bergamo, Italy.
pubmed:publicationType
Journal Article, Review