Sorrento Announces Positive Phase II Results of PD-L1 Checkpoint Inhibitor IMC-001 Presented at Asian Congress of the European Society for Medical Oncology (ESMO)

• IMC-001, a PD-L1 monoclonal antibody selected from Sorrento’s G-MAB library, demonstrated impressive therapeutic effects in patients with heavily treated NK/T-cell lymphoma with a 60% objective response rate
• Achieved 100% complete remission in patients with an objective response rate
• Long-term safety and durable response are demonstrated in patients who continued on treatment for over a year
  

SAN DIEGO, Dec. 05, 2022 (GLOBE NEWSWIRE) -- Sorrento Therapeutics, Inc. (Nasdaq: SRNE, “Sorrento”) is pleased to announce the results of a Phase II NK/T-cell lymphoma study of IMC-001, a PD-L1 monoclonal antibody licensed to ImmuneOncia Therapeutics, LLC (“ImmuneOncia”) (Seongnam, South Korea). ImmuneOncia is a biotechnology company specializing in immuno-oncology drug development, jointly established by Yuhan Corporation of Korea and Sorrento. In addition to IMC-001, ImmuneOncia has a wide range of new products in the pipeline, such as IMC-002, a CD47 antibody, and IMC-201, a bispecific antibody.

The Phase II NK/T-cell lymphoma study was selected for an oral presentation at the Asian Congress of the European Society for Medical Oncology (ESMO Asia 2022) in Singapore on December 4th, 2022. The clinical data demonstrated that in patients with heavily treated NK/T-cell lymphoma, 6 of 10 evaluable patients (60%) not only achieved an objective response, but all 6 patients with an objective response also achieved a complete remission with IMC-001. Additionally, 4 of these 6 patients stayed on treatment for over a year, which provides encouraging indication of long-term IMC-001 treatment safety and durable efficacy.

NK/T-cell lymphoma is a rare cancer that is most prevalent in Asian countries, including China and Korea, and is typically treated with a regimen of radiation and chemotherapy. NK/T-cell lymphoma has a high recurrence rate of 75% within two years. Due to the absence of standard-of-care treatment for relapsed/refractory cases, NK/T lymphoma represents a high unmet medical need and significant market opportunity. To date, no single immuno-oncology drug has obtained approval in this indication.

Professor Won Seog Kim of Samsung Medical Center, the presenter and Principal Investigator of the IMC-001 study, commented, “The complete remission and response rate of 60% of IMC-001 significantly outperformed currently available drugs for the treatment, and very rare adverse events of grade 3 or higher also limit concerns over the side effects, making it a leader among PD-L1 drugs. We expect these results to satisfy the criteria for approval.”