Next-gen Flow Cytometry to Find Immune Profiles, Treatment Response, and Toxicity Markers in Skin Cancer Patients Treated With Cemiplimab.

Cutaneous squamous cell carcinoma (CSCC) is the second most frequent cancer in humans, it exhibits a high tumor mutational burden and is more common in immunocompromised patients, which aimed to explore the impact of immunotherapy in this cancer. CSCC shows good response to anti-PD1 immunotherapy, and cemiplimab is the first FDA-approved and the only EMA-approved treatment for this tumor. However, 50% of patients won't respond to anti-PD1 and to date there is little evidence on the reasons for such a lack of effectiveness. Also, anti-PD1 immunotherapy is very safe, but some patients will develop adverse events, and anticipating severe adverse events might help in patients' management. The NGF-GRACE project aims to find biomarkers of response and toxicity, both in the blood and the tumor, using advanced technologies. The goal is to move towards more personalized treatments, better select patients, predict side effects, and improve our understanding of the immune system in CSCC.