Hereditary Persistence of Fetal Hemoglobin Caused by Single Nucleotide Promoter Mutations in Sickle Cell Trait and Hb SC Disease. 2016

Anthony O Akinbami, and Andrew D Campbell, and Zeqiu J Han, and Hong-Yuan Luo, and David H K Chui, and Martin H Steinberg
a Department of Medicine , Boston University School of Medicine , Boston , Massachusetts , USA.

Hereditary persistence of fetal hemoglobin (HPFH) can be caused by point mutations in the γ-globin gene promoters. We report three rare cases: a child compound heterozygous for Hb S (HBB: c.20A > T) and HPFH with a novel point mutation in the (A)γ-globin gene promoter who had 42.0% Hb S, 17.0% Hb A and 38.0% Hb F; a man with Hb SC (HBB: c.19G > A) disease and a point mutation in the (G)γ-globin gene promoter who had 54.0% Hb S, 18.0% Hb C and 25.0% Hb F; a child heterozygous for Hb S and HPFH due to mutations in both the (A)γ- and (G)γ-globin gene promoters in cis [(G)γ(A)γ(β(+)) HPFH], with 67.0% Hb A, 6.5% Hb S and 25.0% Hb F.

UI MeSH Term Description Entries
D007223 Infant A child between 1 and 23 months of age. Infants
D008297 Male Males
D011401 Promoter Regions, Genetic DNA sequences which are recognized (directly or indirectly) and bound by a DNA-dependent RNA polymerase during the initiation of transcription. Highly conserved sequences within the promoter include the Pribnow box in bacteria and the TATA BOX in eukaryotes. rRNA Promoter,Early Promoters, Genetic,Late Promoters, Genetic,Middle Promoters, Genetic,Promoter Regions,Promoter, Genetic,Promotor Regions,Promotor, Genetic,Pseudopromoter, Genetic,Early Promoter, Genetic,Genetic Late Promoter,Genetic Middle Promoters,Genetic Promoter,Genetic Promoter Region,Genetic Promoter Regions,Genetic Promoters,Genetic Promotor,Genetic Promotors,Genetic Pseudopromoter,Genetic Pseudopromoters,Late Promoter, Genetic,Middle Promoter, Genetic,Promoter Region,Promoter Region, Genetic,Promoter, Genetic Early,Promoter, rRNA,Promoters, Genetic,Promoters, Genetic Middle,Promoters, rRNA,Promotor Region,Promotors, Genetic,Pseudopromoters, Genetic,Region, Genetic Promoter,Region, Promoter,Region, Promotor,Regions, Genetic Promoter,Regions, Promoter,Regions, Promotor,rRNA Promoters
D005260 Female Females
D005319 Fetal Hemoglobin The major component of hemoglobin in the fetus. This HEMOGLOBIN has two alpha and two gamma polypeptide subunits in comparison to normal adult hemoglobin, which has two alpha and two beta polypeptide subunits. Fetal hemoglobin concentrations can be elevated (usually above 0.5%) in children and adults affected by LEUKEMIA and several types of ANEMIA. Hemoglobin F,Hemoglobin, Fetal
D006444 Hemoglobin C A commonly occurring abnormal hemoglobin in which lysine replaces a glutamic acid residue at the sixth position of the beta chains. It results in reduced plasticity of erythrocytes.
D006450 Hemoglobin SC Disease One of the sickle cell disorders characterized by the presence of both hemoglobin S and hemoglobin C. It is similar to, but less severe than sickle cell anemia. SC Disease,Sickle Cell Hemoglobin C Disease,Disease, Hemoglobin SC,Disease, SC,Diseases, Hemoglobin SC,Diseases, SC,Hemoglobin SC Diseases,SC Disease, Hemoglobin,SC Diseases,SC Diseases, Hemoglobin
D006451 Hemoglobin, Sickle An abnormal hemoglobin resulting from the substitution of valine for glutamic acid at position 6 of the beta chain of the globin moiety. The heterozygous state results in sickle cell trait, the homozygous in sickle cell anemia. Hemoglobin S,Deoxygenated Sickle Hemoglobin,Deoxyhemoglobin S,Hemoglobin SS,Hemoglobin, Deoxygenated Sickle,SS, Hemoglobin,Sickle Hemoglobin,Sickle Hemoglobin, Deoxygenated
D006579 Heterozygote An individual having different alleles at one or more loci regarding a specific character. Carriers, Genetic,Genetic Carriers,Carrier, Genetic,Genetic Carrier,Heterozygotes
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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