Premium
Hematological effects of atypical and cameroon β‐globin gene haplotypes in adult sickle cell anemia
Author(s) -
Steinberg M. H.,
Lu Z.H.,
Nagel R. L.,
Venkataramani S.,
Milner P. F.,
Huey L.,
Safaya S.,
Rieder R. F.
Publication year - 1998
Publication title -
american journal of hematology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.456
H-Index - 105
eISSN - 1096-8652
pISSN - 0361-8609
DOI - 10.1002/(sici)1096-8652(199810)59:2<121::aid-ajh4>3.0.co;2-#
Subject(s) - haplotype , sickle cell anemia , hemoglobinopathy , globin , anemia , medicine , gene , thalassemia , genetics , hemolytic anemia , cell , biology , genotype
To examine the effects of unusual or atypical β‐globin gene cluster haplotypes on the hematological features and Hb F levels of sickle cell anemia, we studied African Americans who had an atypical or Cameroon haplotype chromosome in association with a typical haplotype. We identified over 20 atypical haplotypes. The distribution of 5′ subhaplotypes of the atypical chromosomes mirrored the distribution of common haplotypes in African Americans with sickle cell anemia. Neither 5′ nor 3′ subhaplotypes of the atypical chromosomes affected Hb F levels, packed cell volume, or mean corpuscular volume in individuals with a Benin chromosome. That the 5′ subhaplotype is unaffected might be a consequence of the small numbers of Senegal 5′ subhaplotypes in our sample, the need for linkage of both 5′ and 3′ subhaplotypes of any haplotype for an effect on Hb F to be present, or the likelihood that a normal β‐globin gene contributed the 5′ subhaplotypes of some atypical haplotypes. Am. J. Hematol. 59:121–126, 1998. © 1998 Wiley‐Liss, Inc.