Hi Lulu,
Great to read that you have done so well on K2. You give me hope!! Were you getting RBC transfusions prior to taking K2? Do you take the recommended 45 mg with/without D3?
My understanding on malabsorption and the gene you mention is unfortunately almost negligible. My mother has had her Gall bladder removed many years back, other than that she has a weak digestive system and major GI problems with diff types of food(specifically sour foods like tomatoes/lemon etc) and 'ALL' types of medicines. She even considers these supplements & vitamins as medicines and is a believer in natural foods.
She also takes probiotic (Biocare powder) for the last 8 weeks or so. Hope that will be of benefit.
Wish you continued good health!!