X-linked sideroblastic anemia
Other Names for this Disease
- Sideroblastic anemia X-linked
- Anemia sex-linked hypochromic sideroblastic
- Congenital sideroblastic anemia
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hemoglobin. People with X-linked sideroblastic anemia have mature red blood cells that are smaller than normal (microcytic) and appear pale (hypochromic) because of the shortage of hemoglobin. This disorder also leads to an abnormal accumulation of iron in red blood cells. The iron-loaded erythroblasts, which are present in bone marrow, are called ring sideroblasts. These abnormal cells give the condition its name. The signs and symptoms of X-linked sideroblastic anemia result from a combination of reduced hemoglobin and an overload of iron. They range from mild to severe and most often appear in young adulthood. Common features include fatigue, dizziness, a rapid heartbeat, pale skin, and an enlarged liver and spleen (hepatosplenomegaly). Over time, severe medical problems such as heart disease and liver damage (cirrhosis) can result from the buildup of excess iron in these organs. X-linked sideroblastic anemia is caused by mutation in the ALAS2 gene. In rare cases, mutations are found in both the HFE gene and the ALAS2 gene, resulting in a more severe form of X-linked sideroblastic anemia. X-linked sideroblastic anemia is inherited in an X-linked recessive pattern.X-linked sideroblastic anemia is an inherited disorder that prevents developing red blood cells (erythroblasts) from making enough
Last updated: 3/11/2013
- X-linked sideroblastic anemia. Genetics Home Reference (GHR). April 2009; http://ghr.nlm.nih.gov/condition/x-linked-sideroblastic-anemia. Accessed 3/11/2013.
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- The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
- Online Mendelian Inheritance in Man (OMIM) is a catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine.
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