RecruitingBiological interventionA Study of GV20-0251 Monotherapy and GV20-0251 in Combination With Pembrolizumab in Participants With Solid Tumor MalignanciesThis is a Phase 1/2A study of GV20-0251 being developed for the treatment of participants with advanced solid tumors, who are refractory to approved therapies or other standard of care.