Effect of alpha-thalassemia and beta-globin gene cluster haplotypes on the hematological and clinical features of sickle-cell anemia in Brazil.

Abstract:

:To compare the features of sickle-cell anemia in Brazil with those in other locales, we studied the effects of the beta-globin-like gene cluster haplotype and alpha-thalassemia upon the clinical and hematological features in 85 patients. The distribution of haplotypes differed from that in the United States and Jamaica. The Central African Republic (CAR) haplotype predominated; 34% of patients were CAR haplotype homozygotes, 45% CAR/Benin homozygotes, and 11% Benin homozygotes. No Senegal haplotype chromosomes were observed. Alpha-thalassemia was present in 17.5% of patients. HbF levels were higher in Benin homozygotes, compared with the other two groups (P < 0.05). Nearly half the patients with a CAR haplotype had leg ulcers, compared to 12.5% of the Benin homozygote group; stroke did not occur in alpha-thalassemia carriers, but neither result was statistically significant. As in other studies, our results indicate that the CAR haplotype may be associated with more severe disease.

journal_name

Am J Hematol

authors

Figueiredo MS,Kerbauy J,Gonçalves MS,Arruda VR,Saad ST,Sonati MF,Stoming T,Costa FF

doi

10.1002/(SICI)1096-8652(199610)53:2<72::AID-AJH3>3

subject

Has Abstract

pub_date

1996-10-01 00:00:00

pages

72-6

issue

2

eissn

0361-8609

issn

1096-8652

pii

10.1002/(SICI)1096-8652(199610)53:2<72::AID-AJH3>3

journal_volume

53

pub_type

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