Background: Metastatic or locally advanced cutaneous squamous cell carcinoma (cSCC) can be treated with immunotherapy (IO). Cranial nerve involvement (CNI) is uncommon in cSCC and is a poor prognostic factor. Our aim is to describe how patients with CNI respond to IO monotherapy and/or as an adjunct to RT.

Methods: Under an IRB approved protocol, patients with histologically proven cSCC of the head and neck with CNI treated with IO were retrospectively reviewed.

Results: Twelve patients were included and received cemiplimab or pembrolizumab. Eight patients had CNI at diagnosis, and 4 at time of recurrence after non-IO therapy. Best responses were complete response (1), partial response (7), stable disease (1), progressive disease (2), and pending response (1). Nine patients are alive, 6 of which remain on IO.

Conclusions: In this cohort, IO showed clinical response in 83% of patients, indicating IO can be an effective monotherapy, reserving RT for instances of local failure after IO.

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http://dx.doi.org/10.1002/hed.27419DOI Listing

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