You may be referring to the C677T variant of the MTHFR gene. This variant is relatively
commonCommon cold in many populations worldwide. We recommend that you meet with a genetic professional to discuss the risks associated with having two copies of this variant.
A medical geneticist can be found at the American College of Medical Genetics. A genetic counselor can be found at the National Society of Genetic Counselors website or through companies like mine, AccessDNA.