Cantargia Announces the Publication of Preclinical Data Highlighting Nadunolimab's Potential to Counteract Tumor-Driven Systemic Immunosuppression

LUND, SE / ACCESS Newswire / April 28, 2025 / Cantargia (STO:CANTA)

• Preclinical data shows IL1 family signals mediate systemic immune suppression.

• Blocking IL1RAP can overcome resistance to immune therapy in a cervical cancer model.

• Clinical findings from nadunolimab studies reflect these preclinical effects of IL1RAP blockade and suggest translatability to clinical benefit.

Cantargia (Cantargia AB (publ); Nasdaq Stockholm: CANTA) today reported the publication of preclinical results in the renowned scientific journal Cancer Discovery, demonstrating that targeting IL1RAP can effectively inhibit tumor-induced systemic immune suppression in cancer by counteracting immune suppressive myeloid cells. This data is strengthened by nadunolimab clinical data showing a reduction of these cells after nadunolimab treatment. The data is published by Professor Douglas Hanahan's research group at the Lausanne Branch of the Ludwig Institute for Cancer Research and the Swiss Institute for Experimental Cancer Research (EPFL).

"Immune therapy has revolutionized cancer treatment but is still hampered by resistance mechanisms that counteract anti-tumor immune activation. Professor Hanahan's work shows how a tumor can use innate immune mechanisms to induce systemic immune suppression. These signals converge on IL1RAP and can be blocked in preclinical models by a nadunolimab surrogate antibody, overcoming resistance to an anti-tumor vaccine. The data is strengthened by clinical data from nadunolimab studies and strongly emphasize the broader potential of nadunolimab in cancer treatment." said David Liberg, Chief Scientific Officer of Cantargia .

Cancers escape the body's immune response by creating an immunosuppressive environment around the tumor. Beyond the local immunosuppression, cancers can also elicit systemic immunosuppression, whereby lymphoid organs and immune cells are conditioned to restrict anti-tumor immunity, further weakening the anti-cancer responses by the immune system. Using a cervical cancer model, the research group led by Professor Douglas Hanahan identified the IL-1 family of cytokines as major contributors to systemic immunosuppression, that drives a granulocytic expansion in blood, spleen and tumors, and impairs T cell anti-tumor immunity.