And to further answer your question in terms of how the pathway...

And to further answer your question in terms of how the pathway would look, the first goto would be DXB 200 and then add on the other drugs like steroids etc as adjuncts.
You need to understand we are in the infantile stages of development and without any bias, once this drug is marketed, there will be heaps of trials combining it with low dose steroids?, with rituximab? with something else? who knows? You will ask why is there a need to combine it? Like everything in medicine, if you can get a better patient response then why not?

The evolution of drugs in medicine is what keeps us going, if you think about the use of quinine for Malaria and people like you questioning why are we researching mefloquine when we have something that works.... why? because it works better
Salk developed the attenuated dead virus vaccine for polio, Sabin came up with a live vaccine. Again people like you ask why? Why, because it works better and it has eradicated polio pretty much in most countries.
The quest to make human life better and easier for a few unfortunate ones, is what makes this journey so enjoyable. Perhaps not for you.
I am no expert, please everyone do your own research or phone a friend like VRS37 does........