ArticleRevista brasileira de hematologia e hemoterapia2011
What influences Hb fetal production in adulthood?
Article in Revista brasileira de hematologia e hemoterapia, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
5 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.
- Foetal haemoglobin inducers for reducing blood transfusion in non-transfusion-dependent beta-thalassaemias.The Cochrane database of systematic reviews · 2023Pooled it
- Hemoglobin Variants as Targets for Stabilizing Drugs.Molecules (Basel, Switzerland) · 2025Review
- The Masked Thalassemia: A Rare Case of a Patient with Normal HbA2 Levels, β-Thalassemia Pathogenic Variant (CD39 C>T), and a Novel δ-Globin Gene Deletion.The application of clinical genetics · 2025Article
- Comprehensive transcriptome analysis of erythroid differentiation potential of olive leaf in haematopoietic stem cells.Journal of cellular and molecular medicine · 2021Article
- Synergistic effect of two β globin gene cluster mutations leading to the hereditary persistence of fetal hemoglobin (HPFH) phenotype.Molecular biology reports · 2017Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Human hemoglobin genes are located in α and β globin gene clusters in chromosomes 16 and 11, respectively. Different types of hemoglobin are synthesized according to the stage of development with fetal hemoglobin (α(2)γ(2)) (Hb F) being the main hemoglobin in the fetal period. After birth, there is a reduction (to about 1%) in Hb F levels and adult hemoglobin, Hb A (2α(2)β(2)), increases to more than 96% of total hemoglobin. However, some genetic conditions whether linked to the β-globin gene cluster or not are associated with high Hb F levels in adults. Among those linked to β-globin are hereditary persistence of fetal hemoglobin, delta-beta thalassemia (δβ-Thalassemia) and the XmnI polymorphism (-158 C = T). Other polymorphisms not related to β-globin gene cluster are known to influence the γ-globin gene expression in adulthood. The most relevant polymorphisms that increase concentrations of Hb F are the HMIP locus on chromosome 6, the BCL11A locus on chromosome 2, the Xp22.2 region of the X chromosome and the 8q region on chromosome 8. Findings from our research group studying genetic factors involved in γ-globin gene regulation in adults without anemia in the northwestern region of São Paulo State showed that high Hb F levels are influenced by the presence of hereditary persistence of fetal hemoglobin mutations and the XmnI polymorphism, suggesting that both genetic alterations characterize the molecular basis of the evaluated population.
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