774 NeoPOWER: A phase II study of neoadjuvant PD-1 blockade with cemiplimab in high risk localized, locally recurrent and regionally advanced cutaneous squamous cell carcinoma by Kevin Kelly, Gino K In, Jeffrey Sosman, Sunandana Chandra, Jacob Thomas, Fumito Ito, Daniel Kwon, Hugo Lara Martinez, Erin Barrett, Ashley Wysong, Alissa Marr, Joshua Mammen, Thomas Won, Anisa Sandin, Sophia Marmolejo, Andrew Zeng, Niels Kokot, Mark Swanson, Denice Tsao-Wei, Susan Groshen, Andy Sherrod, Brittney Declerck, Gene Kim, David Peng, Jenny C Hu