The genetic link is just a theory. There isn’t a solid scientific evidence that these kind of chronic illnesses are caused by them. You can not focus your recover based on a theory. Keep chelating and reversing your possible acquired immune disorders and you will recover your former health. Until more complicated be your health situation, more simple is the treatment. This is the basic of Holistic medicine. Diet, exercises, and an effective protocol to target your underlying cause.
20 years ago cbs upregulation was considered theory, today it is pretty much a given. There is not 100% correlation between a 699 mutation and symptoms, but there are others factors and if the gene is not being expressed, its not going to manifest. But, the argument that its theory at this point is pretty irrelevant.