Sickle cell disease is an inherited
disorder. More specifically, sickle cell disease is an autosomal recessive
disease. This means that to have the disease, a person must inherit an abnormal
gene from both parents.
People whose
ancestors were from Africa, India, the Middle East, the Mediterranean (Turkey,
Italy, Greece), and some Latin American countries are more likely to inherit
the gene that can cause sickle cell disease. In the United States, the disease
mainly affects African Americans (1 out of 650) and Latin Americans (1 out of
1,000 to 1,400).1 About 8 out of 100 African Americans
carry the sickle cell gene.1
Some people
inherit one sickle cell gene and one other defective
hemoglobin gene. This results in similar sickle cell
disorders ranging from mild to severe. As a group, these disorders occur as
frequently as does sickle cell disease in the U.S.