Is MTHFR gene mutation inherited ?
How is a MTHFR gene mutation inherited? Because each person has two copies of the MTHFR gene, people can inherit one copy of the MTHFR mutation or two copies (one from each parent). People who inherit two copies of a common MTHFR gene mutation (for example two C677T mutations or a C677T mutation and a A1298C mutation) may have an increased risk for certain conditions such as coronary artery disease, blood clots, and stroke when compared to those without the mutations and elevated homocystine levels. Coronary artery disease, blood clots, and stroke are all complex conditions and are caused by a combination of many genetic and environmental factors. Some rare MTHFR gene mutations can lead to homocystinuria, which is inherited in an autosomal recessive manner. Visit our "Homocystinuria due to MTHFR deficiency" webpage.