Karen, I don’t think that there is one. Everyone responds differently to the array of drugs prescribed for our condition. For example, I have been prescribed Simponi and am about to make a change to Cimzia. It’s been my experience that the medications prescribed for AS can stop being effective, therefore, physicians will prescribe another medication. I think it’s the nature of our disease. I wish that I could answer your question, to the letter, but autoimmune diseases are tricky.

Yes. I hoped to find something I've missed. I'm almost out of options. Thanks for replying, Mark.