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Unique Polymorphisms at BCL11A, HBS1L-MYB and HBB Loci Associated with HbF in Kuwaiti Patients with Sickle Cell Disease

Patients with sickle cell disease (SCD) in Kuwait have elevated HbF levels ranging from ~10–44%; however, the modulating factors are unclear. We investigated the association of single nucleotide polymorphisms (SNPs) at BCL11A, HBS1L-MYB and HBB with HbF levels in 237 Kuwaiti SCD patients, divided in...

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Autores principales: Akbulut-Jeradi, Nagihan, Fernandez, Maria Jinky, Al Khaldi, Rasha, Sukumaran, Jalaja, Adekile, Adekunle
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8234980/
https://www.ncbi.nlm.nih.gov/pubmed/34204365
http://dx.doi.org/10.3390/jpm11060567
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author Akbulut-Jeradi, Nagihan
Fernandez, Maria Jinky
Al Khaldi, Rasha
Sukumaran, Jalaja
Adekile, Adekunle
author_facet Akbulut-Jeradi, Nagihan
Fernandez, Maria Jinky
Al Khaldi, Rasha
Sukumaran, Jalaja
Adekile, Adekunle
author_sort Akbulut-Jeradi, Nagihan
collection PubMed
description Patients with sickle cell disease (SCD) in Kuwait have elevated HbF levels ranging from ~10–44%; however, the modulating factors are unclear. We investigated the association of single nucleotide polymorphisms (SNPs) at BCL11A, HBS1L-MYB and HBB with HbF levels in 237 Kuwaiti SCD patients, divided into 3 subgroups according to their HbF levels. Illumina Ampliseq custom DNA panel was used for genotyping and confirmed by arrayed primer extension or Sanger sequencing. In the BCL11A locus, the CC genotype of rs7606173 [χ(2) = 16.5] and (GG) of rs10195871 [χ(2) = 15.0] were associated with Hb-F1 and HbF-2 subgroups, unlike rs1427404-T [χ(2) = 17.3], which showed the highest association across the three subgroups. HBS1L-MYB locus revealed 2 previously-described SNPs (rs66650371 [χ(2) = 9.5] and rs35795442 [χ(2) = 9.2]) and 2 previously-unreported SNPs, (rs13220662 [χ(2) = 6.2] and rs1406811 [χ(2) = 6.7]) that were associated with the HbF-3 subgroup, making this the key locus elevating HbF to the highest levels. HBB cluster variants were associated with lower levels of HbF (β = −1.1). We report four previously-unpublished variants showing significant association with HbF. Each of the three quantitative trait loci affects HbF levels differently; unique SNPs, especially in HBS1L-MYB, elevate HbF to the highest levels.
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spelling pubmed-82349802021-06-27 Unique Polymorphisms at BCL11A, HBS1L-MYB and HBB Loci Associated with HbF in Kuwaiti Patients with Sickle Cell Disease Akbulut-Jeradi, Nagihan Fernandez, Maria Jinky Al Khaldi, Rasha Sukumaran, Jalaja Adekile, Adekunle J Pers Med Article Patients with sickle cell disease (SCD) in Kuwait have elevated HbF levels ranging from ~10–44%; however, the modulating factors are unclear. We investigated the association of single nucleotide polymorphisms (SNPs) at BCL11A, HBS1L-MYB and HBB with HbF levels in 237 Kuwaiti SCD patients, divided into 3 subgroups according to their HbF levels. Illumina Ampliseq custom DNA panel was used for genotyping and confirmed by arrayed primer extension or Sanger sequencing. In the BCL11A locus, the CC genotype of rs7606173 [χ(2) = 16.5] and (GG) of rs10195871 [χ(2) = 15.0] were associated with Hb-F1 and HbF-2 subgroups, unlike rs1427404-T [χ(2) = 17.3], which showed the highest association across the three subgroups. HBS1L-MYB locus revealed 2 previously-described SNPs (rs66650371 [χ(2) = 9.5] and rs35795442 [χ(2) = 9.2]) and 2 previously-unreported SNPs, (rs13220662 [χ(2) = 6.2] and rs1406811 [χ(2) = 6.7]) that were associated with the HbF-3 subgroup, making this the key locus elevating HbF to the highest levels. HBB cluster variants were associated with lower levels of HbF (β = −1.1). We report four previously-unpublished variants showing significant association with HbF. Each of the three quantitative trait loci affects HbF levels differently; unique SNPs, especially in HBS1L-MYB, elevate HbF to the highest levels. MDPI 2021-06-17 /pmc/articles/PMC8234980/ /pubmed/34204365 http://dx.doi.org/10.3390/jpm11060567 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Akbulut-Jeradi, Nagihan
Fernandez, Maria Jinky
Al Khaldi, Rasha
Sukumaran, Jalaja
Adekile, Adekunle
Unique Polymorphisms at BCL11A, HBS1L-MYB and HBB Loci Associated with HbF in Kuwaiti Patients with Sickle Cell Disease
title Unique Polymorphisms at BCL11A, HBS1L-MYB and HBB Loci Associated with HbF in Kuwaiti Patients with Sickle Cell Disease
title_full Unique Polymorphisms at BCL11A, HBS1L-MYB and HBB Loci Associated with HbF in Kuwaiti Patients with Sickle Cell Disease
title_fullStr Unique Polymorphisms at BCL11A, HBS1L-MYB and HBB Loci Associated with HbF in Kuwaiti Patients with Sickle Cell Disease
title_full_unstemmed Unique Polymorphisms at BCL11A, HBS1L-MYB and HBB Loci Associated with HbF in Kuwaiti Patients with Sickle Cell Disease
title_short Unique Polymorphisms at BCL11A, HBS1L-MYB and HBB Loci Associated with HbF in Kuwaiti Patients with Sickle Cell Disease
title_sort unique polymorphisms at bcl11a, hbs1l-myb and hbb loci associated with hbf in kuwaiti patients with sickle cell disease
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8234980/
https://www.ncbi.nlm.nih.gov/pubmed/34204365
http://dx.doi.org/10.3390/jpm11060567
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