I found this site from a Google search that brought me to Rich's interpretation of your results. When I read that I thought this is a forum I want to be a part of.
I haven't done genetic testing yet. I use an orthomolecular approach to treat pyroluria. Ortho also treats high and low histamine levels. Histamine levels relate to under and overmethylation. So I'm tryimg to learn about SNPs to get a sense of the whole picture - all the problems that effect nutrition.
My understanding (and I may be wrong) is COMT is overmethylation (low histamine levels) and MTHFr is undermethylation (high histamine). But these SNPs are still a little confusing to me.
I have Yasko's book but because it lacks a table of contents with page numbers it is a bit of a challenge to use (unless I make my own TOC with pg #s).
I also read Yasko's forum but if I search by SNP initials (COMT or VDR) I get hits for signatures with those SNPs. Posters put their genetic info in their signatures. They don't make it easy to learn this stuff.
But reading the interpretation has me thinking that both high and low histamine levels may be possible at the same time. Food allergies lower histamine levels I've read; so that might explain how those two opposites exit together. I don't know if you have food allergies but that might be one explaination for both SNPs together. I'm not sure if both just exist together to balance each other out. That concept if hard for me to wrap my brain around. I'm still learning this stuff.
High histamine types (histadelics) can have problems with sulfites. Maybe not all though. Molyb helps but if you have a bacterial imbalance but butyrate might help too.
http://www.beatcfsandfms.org/html/HealYourGut.html
(I'm not sure if this link will work.)
Parahprasing -
Your COMT means you are not able to use methyl groups (overmethylation) ...
SAMe makes you spacey - its a methyl donor that overmethylators don't need (they methylate too much and methyl donors make that worse).
But you also have (+/-) MTHFr. You can't process regular folate and need methyl folate (and SAMe).
Because of COMT you don't need methyl donors or methyl forms of b vitamins (methyl B12, 5 MTHF) but MTHFr means you do need SAMe (main methyl donor)and 5 MTHF. This is the part I haven't wrapped my brain around. Understanding histamine levels lead me to believe that a person has either one or the other (high or low levels) but not both together. Apparently both together is possible.
The VDR SNP I think I understand. This means you need D3 and not D2. You may also benefit from vitamin K2 and rosemary and sage. The VDR SNP means vitamin D doesn't get in the cells where it is needed. So its important to take those other things to help vitamin D transport. VDR FOK means you may be prone to diabetes or perhaps problems with your pancreas. Yasko's protocol includes pancreatin for this from what I read on her forum.
The Marshal Protocol is about vitamin D causing problems. I wonder if the Marshall protocol works for those who are VDR positive.
But I did find that interpretation interesting to read. A lot of it was over my head but hopefully I develop an understanding of those other SNPs eventually.