“The initial efficacy, safety, and pharmacokinetic data from the first five dose cohorts of the Phase 1b trial in patients with recurrent or metastatic EBV-positive NPC are very encouraging,” said Darrel P. Cohen, M.D., Ph.D., Chief Medical Officer of Viracta. “These results support the continued advancement and dose escalation of the study, especially given the two durable confirmed partial responses, the emerging dose-response relationship, and the favorable safety and tolerability profile observed to date.”