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A screening policy exists in Cyprus to reduce the incidence of thalassemia, which since the program's implementation in the 1970s (which also includes pre-natal screening and abortion) has reduced the number of children born with the hereditary blood disease from 1 out of every 158 births to almost zero. [26]
β thalassemia major (Mediterranean anemia or Cooley anemia) is caused by a β o /β o genotype. No functional β chains are produced, and thus no hemoglobin A can be assembled. This is the most severe form of β-thalassemia. β thalassemia intermedia is caused by a β + /β o or β + /β + genotype. In this form, some hemoglobin A is produced.
Beta thalassemia is a hereditary disease allowing for a preventative treatment by carrier screening and prenatal diagnosis. It can be prevented if one parent has normal genes, giving rise to screenings that empower carriers to select partners with normal hemoglobin.
Alpha-thalassemia (α-thalassemia, α-thalassaemia) is an inherited blood disorder and a form of thalassemia. Thalassemias are a group of inherited blood conditions which result in the impaired production of hemoglobin , the molecule that carries oxygen in the blood. [ 4 ]
The treatment was approved in the United Kingdom for the treatment of sickle cell disease and transfusion-dependent beta thalassemia in November 2023. [10] [11] [12] It was approved in the United States for the treatment of sickle cell disease in December 2023 and for the treatment of transfusion-dependent beta thalassemia in January 2024. [13 ...
Screening programs are available to identify thalassemia patients among the general public. Couples are in particular the target group of screening for early identification of carriers who bear risks of having children with thalassemia. [8] Screenings targeted at them are done by detecting heterozygotes in the thalassemia gene.
The majority of hemoglobin variants do not cause disease and are most commonly discovered either incidentally or through newborn screening. Hb variants can usually be detected by protein-based assay methods such as electrophoresis , [ 15 ] isoelectric focusing , [ 16 ] or high-performance liquid chromatography . [ 17 ]
The Mentzer index, described in 1973 by William C. Mentzer, [1] is the MCV divided by the RBC count. It is said to be helpful in differentiating iron deficiency anemia from beta thalassemia trait.
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