Hmmm not at all common. Usually rescue treatments are IV Steroids, IV Cyclosporine, or IV double-dose Remicade/infliximab (a tnf-alpha blocker). Scratch the IV Steroids if you are steroid-refractory.
Here's a pubmed article talking about
the lot of these with IBD patients:
/www.ncbi.nlm.nih.gov/pmc/articles/PMC4479736/