This one is called canakinumab, not sure if it's the same drug?
Drug name: This one is called canakinumab, not... - Vasculitis UK
Drug name
Googled Canakunimab and it's a biologic drug, it basically blocks a specific inflammatory pathway ( in this case one of the Interleukins ).
There is a biologic drug called Rituximab which is already used to treat ANCA Vasculitis in particular with good success.
These drugs aren't a replacement for prednisolone as they can take a few months to become effective whereas prednisolone acts within 8 hours.
Avacopan is showing promise as a prednisolone alternative though, as well as the large clinical trial underway ( which I posted the link to ) it has shown success in a small study.
I believe canakunimab is being used to treat people who have had a heart attack to prevent further heart attacks and cancer
Heart attack and cancer deaths could be cut by new drug