Surface Oncology Announces FDA Fast Track Designation Granted by U.S. Food and Drug Administration for SRF388 to Treat Liver Cancer

Surface Oncology (Nasdaq: SURF), a clinical-stage immuno-oncology company developing next-generation immunotherapies that target the tumor microenvironment, today announced that the U.S. Food and Drug Administration (FDA) has granted Fast Track designation to SRF388 for the treatment of patients with hepatocellular carcinoma (HCC), or liver cancer, who have been previously treated with standard therapies, such as vascular endothelial growth factor targeted agents and programmed death-ligand (PD-L1) blockade.

“Liver cancer is the most rapidly increasing type of cancer in both men and women in the U.S., with incidences tripling since 1980.^1 2 There is a significant need to expedite the development of new therapies to treat liver cancer as the five-year survival for patients with unresectable or metastatic liver cancer is less than five percent,”² said Rob Ross, M.D., chief medical officer. “SRF388 targets IL-27, an immuno-suppressive cytokine that has been found to be elevated in patients with liver cancer, as well as kidney cancer, and we believe SRF388 has the potential to be an effective treatment option for these patients, as monotherapy or in combination with anti-PD-1 therapies.”

SRF388 is currently enrolling patients with advanced solid tumors in a Phase 1 monotherapy dose escalation study with planned expansions in liver and kidney cancer to further evaluate SRF388 as a monotherapy and in combination with other cancer therapies.

The FDA’s Fast Track designation is designed to facilitate the development and expedite the review of drugs that are being developed to treat serious conditions and fill an unmet medical need. The purpose of the designation is to bring important new drugs to patients earlier across a wide range of diseases.

SRF388 recently received orphan-drug designation for treatment of hepatocellular carcinoma from the FDA.

About SRF388:

SRF388 is a fully human anti-IL-27 antibody designed to inhibit the activity of this immuno-suppressive cytokine. Surface Oncology has identified particular tumor types, including liver and kidney cancer, where IL-27 appears to play an important role in the immuno-suppressive tumor microenvironment and may contribute to resistance to treatment with checkpoint inhibitors. SRF388 targets the rate-limiting p28 subunit of IL-27, and preclinical studies have shown that treatment with SRF388 blocks the immuno-suppressive biologic effects of IL-27, resulting in immune cell activation in combination with other cancer therapies and potent anti-tumor effects as a monotherapy. Furthermore, Surface Oncology has identified a potential biomarker associated with IL-27 that may be useful in helping identify patients most likely to respond to SRF388.

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