Hemoglobin Inherited Disorder

About 7 million of babies are born each year with either congenital abnormality or a genetic disease, and up to 90% of the births occur in low or middle income countries. About 25% consist of only 5 disorder, 2 have inherited disorders of hemoglobin glucose-6-phosphate dehydrogenase deficiency, that are include of monogenic disease. Estimated in excess of 300.000 children are born each year with either sickle cell anemia or one of its variants or a form of thlassemia.

As a research the different hemoglobin disorder is a kind has focused on the underlying mutation that are involved. Difficult to estimate of the health burden that will encountered, particularly by the poorer countries of the world, as the hemoglobin disorder become even more frequent in the future.

Sickle cell anemia is by far the commonest, a further analysis of the data suggest that close to 180,000 babies are born each year in sub-Saharian Africa with this condition. The serious form of β thalassemia are equally divided between β thalassemia major and hemoglobin E (HbE) β thalassemia.

There are many reason to make a map of the distribution of the hemoglobin disorder, often within a short geographical distances. The extensive evidence now shows that the main reason for the high frequency of the hemoglobin disorder is heterozygote, and in the case of β thalassemia and HbC. The different distribution of particular varieties of the hemoglobin disorders among the world populations almost certainly reflects the occurrence of de novo mutations that expanded rapidly under the pressure of natural selection.

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