Thanks @becsbuddy for your response and the article links. That info is what I'm finding too. My gastroenterologist and oncologist are working together. The frustrating part is that there doesn't seem to be an "approved" method for treatment as far as how many infusions, dosage, etc. Each article my wife and I read is somewhat different. I do believe Rituximab works as I have actually been symptom free for several months which is amazing. I know Mayo has done some studies but I can't find anything with specific study details. I have seen the 2019 youtube video describing their study but would love to know if they have done anything else.