Genetic Modifiers of Sickle Cell Anemia Phenotype in a Cohort of Angolan Children

The aim of this study was to identify genetic markers in the Cluster; intergenic region; and , , , and genes associated with the heterogeneous phenotypes of Sickle Cell Anemia (SCA) using next-generation sequencing, as well as to assess their influence and prevalence in an Angolan population. Hemato...

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Veröffentlicht in:Genes 2024-04, Vol.15 (4), p.469
Hauptverfasser: Ginete, Catarina, Delgadinho, Mariana, Santos, Brígida, Miranda, Armandina, Silva, Carina, Guerreiro, Paulo, Chimusa, Emile R, Brito, Miguel
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container_issue 4
container_start_page 469
container_title Genes
container_volume 15
creator Ginete, Catarina
Delgadinho, Mariana
Santos, Brígida
Miranda, Armandina
Silva, Carina
Guerreiro, Paulo
Chimusa, Emile R
Brito, Miguel
description The aim of this study was to identify genetic markers in the Cluster; intergenic region; and , , , and genes associated with the heterogeneous phenotypes of Sickle Cell Anemia (SCA) using next-generation sequencing, as well as to assess their influence and prevalence in an Angolan population. Hematological, biochemical, and clinical data were considered to determine patients' severity phenotypes. Samples from 192 patients were sequenced, and 5,019,378 variants of high quality were registered. A catalog of candidate modifier genes that clustered in pathophysiological pathways important for SCA was generated, and candidate genes associated with increasing vaso-occlusive crises (VOC) and with lower fetal hemoglobin (HbF) were identified. These data support the polygenic view of the genetic architecture of SCA phenotypic variability. Two single nucleotide polymorphisms in the intronic region of 2q16.1, harboring the gene, are genome-wide and significantly associated with decreasing HbF. A set of variants was identified to nominally be associated with increasing VOC and are potential genetic modifiers harboring phenotypic variation among patients. To the best of our knowledge, this is the first investigation of clinical variation in SCA in Angola using a well-customized and targeted sequencing approach.
doi_str_mv 10.3390/genes15040469
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Hematological, biochemical, and clinical data were considered to determine patients' severity phenotypes. Samples from 192 patients were sequenced, and 5,019,378 variants of high quality were registered. A catalog of candidate modifier genes that clustered in pathophysiological pathways important for SCA was generated, and candidate genes associated with increasing vaso-occlusive crises (VOC) and with lower fetal hemoglobin (HbF) were identified. These data support the polygenic view of the genetic architecture of SCA phenotypic variability. Two single nucleotide polymorphisms in the intronic region of 2q16.1, harboring the gene, are genome-wide and significantly associated with decreasing HbF. A set of variants was identified to nominally be associated with increasing VOC and are potential genetic modifiers harboring phenotypic variation among patients. 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intergenic region; and , , , and genes associated with the heterogeneous phenotypes of Sickle Cell Anemia (SCA) using next-generation sequencing, as well as to assess their influence and prevalence in an Angolan population. Hematological, biochemical, and clinical data were considered to determine patients' severity phenotypes. Samples from 192 patients were sequenced, and 5,019,378 variants of high quality were registered. A catalog of candidate modifier genes that clustered in pathophysiological pathways important for SCA was generated, and candidate genes associated with increasing vaso-occlusive crises (VOC) and with lower fetal hemoglobin (HbF) were identified. These data support the polygenic view of the genetic architecture of SCA phenotypic variability. Two single nucleotide polymorphisms in the intronic region of 2q16.1, harboring the gene, are genome-wide and significantly associated with decreasing HbF. A set of variants was identified to nominally be associated with increasing VOC and are potential genetic modifiers harboring phenotypic variation among patients. 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source MDPI - Multidisciplinary Digital Publishing Institute; MEDLINE; EZB-FREE-00999 freely available EZB journals; PubMed Central; PubMed Central Open Access
subjects Adolescent
Anemia
Anemia, Sickle Cell - genetics
Angola
Child
Child, Preschool
Consortia
Datasets
Female
Fetal Hemoglobin - genetics
Fetuses
Genes
Genes, Modifier
Genetic aspects
Genetic diversity
Genetic markers
Genetic variability
Genomes
Genomics
Genotype & phenotype
GTP-Binding Proteins
Hematology
Hemoglobin
Humans
intergenic DNA
introns
Kruppel-Like Transcription Factors - genetics
Male
Medical prognosis
Mutation
Next-generation sequencing
Ontology
Phenotype
Phenotypes
phenotypic variation
Phenotypic variations
Polymorphism, Single Nucleotide
Principal components analysis
Quality control
Repressor Proteins - genetics
Sickle cell anemia
Sickle cell disease
Single nucleotide polymorphisms
Single-nucleotide polymorphism
Software
title Genetic Modifiers of Sickle Cell Anemia Phenotype in a Cohort of Angolan Children
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