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Alpha-thalassemia (α-thalassemia) is defined by a lack of α-globin chain production in hemoglobin, and those who carry a mutation impacting the α-globin chain on only one chromosome are considered to have a “silent” α-thalassemia whereas, if the mutation is on both then it is considered an α-thalassemia trait.
Haemophilia (British English), or hemophilia (American English) [6] (from Ancient Greek αἷμα (haîma) 'blood' and φιλία (philía) 'love of'), [7] is a mostly inherited genetic disorder that impairs the body's ability to make blood clots, a process needed to stop bleeding.
Alpha thalassemia-intellectual disability syndrome, deletion type, Alpha thalassemia-mental retardation syndrome Chromosome 16 is linked to this condition. ATR-16 syndrome , also called alpha-thalassemia-Intellectual disability syndrome , is a rare disease characterized by monosomy on part of chromosome 16 .
Beta thalassemia minor results in a mild microcytic anemia that is often asymptomatic or may cause fatigue and or pale skin. Beta thalassemia major occurs when a person inherits two abnormal alleles. This can be either two β+ alleles, two β0 alleles, or one of each. Beta thalassemia major is a severe medical condition.
Delta beta-thalassemia is a rare genetic blood disorder in which the production of both δ and β subunits are reduced or absent. In these cases, the production of the γ subunit increases to compensate for the loss of δ and β subunits, resulting in a higher amount of hemoglobin F present in the blood.
Hemoglobin A2 (HbA 2) is a normal variant of hemoglobin A that consists of two alpha and two delta chains (α 2 δ 2) and is found at low levels in normal human blood.Hemoglobin A2 may be increased in beta thalassemia or in people who are heterozygous for the beta thalassemia gene.