Is there any experience of using sarilumab instead of tocilizumab for steroid sparing effect in GCA during national tocilizumab shortage?   

This is certainly a very good question, but unfortunately, we don't have an answer. The sarilumab GCA and PMR trials were unfortunately terminated due to the pandemic. I've heard of anecdotal experiences of the use of sarilumab but haven't used it myself (not sure if insurances would approve). Both ...