Viracta Therapeutics Announces Positive Topline Nana-val Results from Stage 1 of the NAVAL-1 Trial in Patients with Relapsed or Refractory Epstein-Barr Virus-Positive (EBV+) Peripheral T-Cell Lymphoma

- Patients in the Nana-val (nanatinostat in combination with valganciclovir) treatment arm achieved clinically meaningful anti-tumor responses with an overall response rate of 50% and a complete response rate of 20% in the intent-to-treat population (71% and 29% in the efficacy-evaluable population) with a generally manageable safety profile -

- Nana-val demonstrated substantially greater efficacy than nanatinostat monotherapy, further validating its ‘Kick and Kill’ mechanism of action -

- Data were presented in an oral presentation at the 2024 Joint Annual Congress of Taiwan Society of Blood and Marrow Transplantation and The Hematology Society of Taiwan -

SAN DIEGO, April 15, 2024 (GLOBE NEWSWIRE) -- Viracta Therapeutics, Inc. (Nasdaq: VIRX), a clinical-stage precision oncology company focused on the treatment and prevention of virus-associated cancers that impact patients worldwide, today reported positive topline results from Stage 1 of the pivotal Phase 2 NAVAL-1 trial from both arms of the relapsed or refractory (R/R) Epstein-Barr virus-positive (EBV⁺) peripheral T-cell lymphoma (PTCL) cohort. Patients were randomized to either nanatinostat monotherapy (n=10) or to nanatinostat in combination with valganciclovir (Nana-val, n=10). These data were featured in an oral presentation during the 2024 Joint Annual Congress of Taiwan Society of Blood and Marrow Transplantation and The Hematology Society of Taiwan.

“Nana-val demonstrated an impressive clinical response in patients with relapsed or refractory EBV-positive PTCL with a generally manageable safety profile, including one patient who was able to proceed to allogeneic stem-cell transplant and remains in response for over 8 months to date,” said Hung Chang, M.D., Professor of Hematology, Linkou Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan and principal investigator in the NAVAL-1 trial. “The substantially greater clinical efficacy of Nana-val relative to nanatinostat monotherapy suggests that both agents in the combination regimen are contributing to its anti-tumor activity as predicted by their mechanisms of action. Nana-val is emerging as a promising, generally well-tolerated, convenient all-oral treatment for patients with relapsed or refractory EBV-positive PTCL.”