|?|| (C;C) (C;T) (T;T) ||28|
The product the BHMT gene is central to the ‘short cut’ through the methylation cycle, again helping to convert homocysteine to methionine. The activity of this gene product can be affected by stress, by cortisol levels and may play a role in ADD/ADHD by affecting norepinephrine levels.
Yasko believes that believes BHMT-02 and BHMT-04 play a role in the gut environment. Yasko also believes that BHMT-08 is related to the impact that psychological stress has on a patient's attention levels.
[PMID 18457970] Human betaine-homocysteine methyltransferase (BHMT) and BHMT2: common gene sequence variation and functional characterization.
[PMID 19048631] Oral facial clefts and gene polymorphisms in metabolism of folate/one-carbon and vitamin A: a pathway-wide association study.
[PMID 19493349] 118 SNPs of folate-related genes and risks of spina bifida and conotruncal heart defects.