HBA2, hemoglobin subunit alpha 2, 3040

N. diseases: 182; N. variants: 34
Source: ALL
Disease Score gda Association Type Type Original DB Sentence supporting the association PMID PMID Year
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 Biomarker disease BEFREE With differences in the amounts of HbA2 and HbF between the groups, an arbitrary score (7.3 HbA2+HbF) was developed where score above 60 indicated HbE-β0-thalassemia. 29668441 2018
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 Biomarker disease BEFREE The α-globin gene triplicated haplotype (αααanti3.7) was observed in 1 case of Hb E-β0-thalassemia. 26303193 2016
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 GeneticVariation disease BEFREE DNA analysis of δ-globin gene identified the Hb A2-Melbourne [δ43(CD2)Glu→Lys] in combination with α(+)-thalassemia, α(0)-thalassemia and β(0)-thalassemia in the first three cases, respectively. 25218786 2015
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 AlteredExpression disease BEFREE HbA2 levels in β-thalassaemia carriers with the Filipino β0-deletion: are the levels higher than what is found with non-deletional forms of β0-thalassaemia? 23222244 2013
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 AlteredExpression disease BEFREE The highest levels of HbA(2) and Hb Hope were observed in samples with Hb Hope/β(0)-thalassemia. 22962223 2012
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 Biomarker disease BEFREE To identify genetic modifiers influencing disease severity, we conducted a two-stage genome scan in groups of 207 mild and 305 severe unrelated patients from Thailand with Hb E/beta0 thalassemia and normal alpha-globin genes. 20353593 2010
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 Biomarker disease BEFREE Coinheritance of alpha-thalassemia with beta 0-thalassemia/Hb E produces a milder clinical phenotype in contrast to an interaction of alpha-globin gene triplication in severe thalassemia. 18026953 2008
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 GeneticVariation disease BEFREE A novel beta-delta globin gene fusion, anti-Lepore Hong Kong, leads to overexpression of delta globin chain and a mild thalassaemia intermedia phenotype when co-inherited with beta(0)-thalassaemia. 17222202 2007
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 Biomarker disease BEFREE We evaluated the contribution of 67 single nucleotide polymorphisms (SNPs) within the beta-globin gene cluster to disease severity in groups of 207 mild- and 305 severe unrelated patients from Thailand with Hemoglobin E (HbE)/beta(0)-thalassemia and normal alpha-globin genes. 17894837 2007
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 GeneticVariation disease BEFREE We describe a patient originating from Ghana who had combined heterozygous alpha (4.2)thalassemia, alpha alpha alpha anti3.7 triplication, the common delta globin variant HbA2' and a new 65 bp duplication/insertion in exon II of the b globin gene causing beta (0)-thalassemia. 17339197 2007
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 GeneticVariation disease BEFREE The mother also carried a previously unreported missense mutation of the delta-globin gene, in cis with the beta(0)-thalassemia mutation, which gave rise to the minor Hb variant originally misidentified as Hb Lepore. 14587045 2003
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 GeneticVariation disease BEFREE Triplication of alpha-globin gene and heterozygosity for beta0-thalassemia accounted for 15% of beta-thalassemia intermedia patients at our locality and was associated with a mild clinical phenotype. 11445869 2001
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 Biomarker disease BEFREE As expected, alpha/beta-globin mRNA ratios were influenced by the concomitant presence of an alpha-globin gene pathology and the beta0 thalassemia and not by the presence of the beta-globin variant which apparently is clinically silent. 10398311 1999
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 Biomarker disease BEFREE Alpha/beta mRNA ratio was higher than in cases combining alpha-globin triplication and beta(0)-thalassaemia or in cases of beta(0)-thalassaemia heterozygous state alone (18, 14.7 and 10.1 respectively). 10554822 1999
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 GeneticVariation disease BEFREE The three patients homozygous for the alpha-globin gene locus (anti 3.7 kb arrangement) had beta(0)-thalassaemia mutations and a diagnosis of thalassaemia intermedia, preserving haemoglobin levels around 7-8 g/dl. 8943886 1996
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 Biomarker disease BEFREE Severe thalassaemia intermedia caused by interaction of homozygosity for alpha-globin gene triplication with heterozygosity for beta zero-thalassaemia. 8199028 1994
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 Biomarker disease BEFREE Filipino beta zero thalassaemia extends for approximately 45 kb beginning approximately 1.5 kb 3' to the delta globin gene. 7682618 1993
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 GeneticVariation disease BEFREE From these results, we may conclude that the inheritance of a mild beta-thalassemia allele such as the beta+ IVS-I nt 6 mutation, in the homozygous or heterozygous state, the coinheritance with homozygous beta zero-thalassemia of the -158 (C----T) G gamma gene promoter mutation and the presence of heterozygous beta-thalassemia/triple alpha-globin gene arrangement are the most common reasons accounting for the development of attenuated forms of beta-thalassemia in Puglia. 1725229 1991
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 AlteredExpression disease BEFREE Compared to SS disease, both thalassaemia syndromes had higher HbA2 levels and red cell counts and lower mean cell haemoglobin content (MCHC), mean cell volume (MCV) and MCH, and S beta zero thalassaemia had higher HbF and reticulocyte counts. 2012764 1991
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 GeneticVariation disease BEFREE We describe a novel mutation in the delta globin gene of a compound heterozygote for delta o thalassemia and a deletion type G gamma + (A gamma delta beta) zero thalassemia. 2767680 1989
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 GeneticVariation disease BEFREE In all these subjects hypochromia and microcytosis were more marked than in beta zero-thalassemia heterozygotes with a full complement of four alpha-globin genes.All but one had moderate anemia. 3189303 1988
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 Biomarker disease BEFREE The effects of alpha thalassaemia on sickle cell-beta zero thalassaemia have been studied by comparing haematological and clinical features in four subjects homozygous for alpha thalassaemia 2 (2-gene group), 27 heterozygotes (3-gene group), and 55 with a normal alpha globin gene complement (4-gene group). 3219294 1988
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 AlteredExpression disease BEFREE We report the characterization of a beta zero-thalassemia in an American Black with unusually high HbA2 and HbF levels. 2456798 1988
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 AlteredExpression disease BEFREE No differences between S beta(0) thalassaemia and S beta(+) thalassaemia were apparent in HbF levels (which resembled those in SS disease) or in HbA2 levels (which exceeded those in SS disease by 1 year of age). 4005180 1985
CUI: C0271980
Disease: beta^0^ Thalassemia
beta^0^ Thalassemia
0.100 GeneticVariation disease BEFREE Alpha zero- and beta zero-thalassemia in a Thai family: unusually mild homozygous beta zero-thalassemia without alpha-globin gene deletion. 2580774 1985