Hi @abbeyc
The biologic I'm currently on is called Actemra (tocilizumab). It has been FDA approved for the treatment of GCA but not for PMR.
https://www.healio.com/news/rheumatology/20210521/tocilizumab-holds-firm-as-steroidsparing-agent-in-giant-cell-arteritis
Some doctors think it is a game changer for the treatment of GCA. There is ongoing research to see if Actemra will work for PMR. If my experience is any indication, I would say it works for PMR. My rheumatologist wanted me to try Actemra because of my 12 year battle with PMR.

I was unable to taper off prednisone for more than 12 years. I started Actemra on January 1st, 2019. I was off prednisone a year later. I could have tapered off prednisone sooner except for having adrenal insufficiency caused by long term prednisone use.