557MO Phase II trial evaluating the efficacy of pembrolizumab combined with vorinostat in patients with recurrent and/or metastatic anal squamous cell carcinoma: Subgroup analysis of the PEVOsq basket trial. - Coutzac, C.; Bigot, F.; Vansteene, D.; Dos Santos, M.; Ghiringhelli, F.; You, B.; Lambert, A.; Gomez-Roca, C.A.; Abdeddaim, C.; Neuzillet, C.; Jeannot, E.; Guerini Rocco, E.; et al. (Annals of Oncology, 2023)