Any experiences with Kevzara (sarilumab)?

I was on Kevzara for 8 months last year. It did help my symptoms and seemed to prevent flare-ups but it did not allow me to get below 5 mg of prednisone. There were side effects that showed up in labs: high cholesterol and white cells below the normal range. My primary doctor did not think my cholesterol was bad enough to need treatment and the white cells were only slightly low. I had to get off the drug due to cost. About a month after stopping I had a pretty bad flare-up so it had been helping me. Now I'm on Actemra which my insurance is hopefully going to cover!