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African American DNA Research Forum

Re: DNA/Beta Thalassemia
In Response To: Re: DNA/Beta Thalassemia ()

Answering my own question.

Both are "sickle cell diseases", but they are specific forms of a sickle cell disease.
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"Sickle-cell anemia" is the name of a specific form of sickle-cell disease in which there is homozygosity for the mutation that causes Hgb S. Other forms of sickle-cell disease include:

sickle-haemoglobin C disease
sickle beta-plus-thalassemia
sickle beta-zero-thalassemia
hemoglobin ss
Unlike sickle-cell anemia, these other forms of sickle-cell disease are compound heterozygous states in which the person has only one copy of the mutation that causes Hgb S and one copy of another abnormal haemoglobin gene. It is important to know that "sickle-cell anemia" is the proper name of a specific type of "sickle-cell disease", and that "sickle-cell disease" is a non-specific term. Because the different forms of sickle-cell disease are quite different, one must be sure to specify the exact form of the disease in question.


18 Dec 2002 :: 14 Nov 2008
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