Effects of hydroxyurea in a population of Brazilian patients with sickle cell anemia.

Abstract:

:Fetal hemoglobin (HbF) inhibits the polymerization of sickle hemoglobin, modulating the clinical features of sickle cell anemia (SCA). Hydroxyurea (HU) therapy can increase the HbF level, although its production can be influenced by genetic determinants. Twenty-two Brazilian SCA patients were evaluated over 5 years before and after HU use. We analyzed (1) betaS haplotype; (2) patient characteristics; and (3) toxicity. No differences between age, sex, and HU response were observed. We found 40.9% of homozygous for Bantu haplotype, and, in contrasting to other trials, we observed HbF level increase in this group (3.84-9.08 g/dL, P=0.003). Adverse effects were rare. Labyrinthitis was observed in 2 (9.10%) patients after HU use, although this complication had not been described before.

journal_name

Am J Hematol

authors

Vicari P,Barretto de Mello A,Figueiredo MS

doi

10.1002/ajh.20293

keywords:

subject

Has Abstract

pub_date

2005-03-01 00:00:00

pages

243-4

issue

3

eissn

0361-8609

issn

1096-8652

journal_volume

78

pub_type

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