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TMPRSS6
SNP Table
| variant | genotype | frequency | risk allele |
|---|---|---|---|
| rs762651137 | |||
| rs80252000 | |||
| rs201819965 | |||
| rs557834969 | |||
| rs145053404 | |||
| rs201148397 | |||
| rs113803353 | |||
| rs116092750 | |||
| rs116310349 | |||
| rs117576908 | |||
| rs139489941 | |||
| rs139563689 | |||
| rs142400865 | |||
| rs143182343 | |||
| rs143244650 | |||
| rs145073875 | |||
| rs146063847 | |||
| rs185482276 | |||
| rs188371820 | |||
| rs201126963 |
Find on This Page
Summary
The TMPRSS6 gene codes for matriptase-2. Matriptase-2 is an enzyme that increases levels of iron in the blood [R].
Matriptase-2 increases blood levels of iron by regulating the production of hepcidin. Hepcidin is a hormone that blocks iron absorption in the gut and prevents its release from stores in the body, thereby lowering iron levels in the bloodstream [R].
TMPRSS6 mutations have been linked to a form of iron deficiency anemia. Red blood cells require iron to make hemoglobin, a protein that helps transport oxygen throughout the body. Low iron levels lead to a lack of oxygen in tissues, which promotes symptoms like weakness and pale skin [R, R, R].
Protein names
Found in These Blog Articles
GHR Function
The TMPRSS6 gene provides instructions for making a protein called matriptase-2. This protein is part of a signaling pathway that controls the levels of another protein called hepcidin, which is a key regulator of iron balance in the body. When blood iron levels are low, this signaling pathway reduces hepcidin production, allowing more iron from the diet to be absorbed through the intestines and transported out of storage sites (particularly in the liver and spleen) into the bloodstream. Iron is an essential component of hemoglobin, which is the molecule in red blood cells that carries oxygen.
More Information
The TMPRSS6 gene provides instructions for making a protein called matriptase-2. This protein is part of a signaling pathway that controls the levels of another protein called hepcidin, which is a key regulator of iron balance in the body. When blood iron levels are low, this signaling pathway reduces hepcidin production, allowing more iron from the diet to be absorbed through the intestines and transported out of storage sites (particularly in the liver and spleen) into the bloodstream. Iron is an essential component of hemoglobin, which is the molecule in red blood cells that carries oxygen.
At least 40 mutations in the TMPRSS6 gene have been found to cause an inherited form of anemia called iron-refractory iron deficiency anemia. This condition is characterized by a shortage (deficiency) of iron in the bloodstream that is resistant (refractory) to treatment with iron. TMPRSS6 gene mutations greatly reduce the amount of functional matriptase-2, preventing it from controlling hepcidin levels. The resulting elevation in hepcidin activity blocks the absorption of iron through the intestines and the release of iron from storage. When not enough iron is available in the bloodstream, less hemoglobin is produced and red blood cells cannot carry oxygen to the body's cells and tissues effectively. The shortage of oxygen causes the signs and symptoms of anemia, which can include tiredness (fatigue), weakness, and pale skin.
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