Is Cemiplimab, an immunotherapy, effective for basal cell carcinoma?

Has anyone out there heard of or had experience with a form of immunotherapy called Cemiplimab?
After having taken the hedgehog-pathway inhibitor vismodegib for six-and-a-half months to treat a large ocular BCC tumor, which I am grateful to say is now gone, there could be errant undetectable microscopic BCC cells that remain in the region behind my eye and could result in yet another recurrence.
I stopped the vismo after 6.5 months due to an accumulation of debilitating side effects. I could resume the chemo treatment, albeit with a modified dosage and schedule, while monitoring side effects, but I've just come across this immunotherapy and am curious to know more about it.
Since traditionally the recommended next step in the eradication of what might remain of the BCC in the region is radiation or proton therapy, which would destroy my eye, I am seeking other alternatives.
I would love to be able to speak to other people who have had this same aggressive, recurring form of BCC in the ocular region. I'd also like to find out about how the immunotherapy has worked for those who have gone that treatment route.