On April 14, 2025 Aulos Bioscience, an immuno-oncology company working to revolutionize cancer care through development of immune-activating antibody therapeutics, reported dosing of its first patient with a combination of AU-007, the anti-PD-1 antibody nivolumab and low-dose, subcutaneous aldesleukin in a Phase 2 expansion cohort focused on second-line treatment of melanoma (Press release, Aulos Bioscience, APR 14, 2025, View Source [SID1234651905]). This new cohort is part of Aulos’ Phase 1/2 clinical trial of AU-007 in patients with unresectable locally advanced or metastatic cancer.

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Preliminary Phase 2 data presented in November at the Society for Immunotherapy of Cancer (SITC) (Free SITC Whitepaper) 39th Annual Meeting showed that a combination of AU-007 and low-dose, subcutaneous aldesleukin is clinically active in patients with melanoma, with durable objective responses achieved. The additional Phase 2 cohort in melanoma now allows the nivolumab combination portion of this study to progress.

"We are excited that the first patient is receiving treatment in this new Phase 2 cohort evaluating AU-007 in combination with nivolumab," said Aron Knickerbocker, Aulos Bioscience’s president and chief executive officer. "Given its unique mechanism of action and the positive data presented to date on AU-007 and low-dose, subcutaneous aldesleukin, we believe that AU-007 holds real promise as a novel immuno-oncology treatment in combination with checkpoint inhibitors in multiple cancer types. These include non-small cell lung cancer, for which we initiated a Phase 2 cohort with the anti-PD-L1 antibody avelumab in November, and now melanoma."

AU-007 is the first human monoclonal antibody designed with the assistance of artificial intelligence to enter a human clinical trial. The antibody harnesses the power of interleukin-2 (IL-2) by binding precisely to the portion of IL-2 that binds to CD25, which prevents IL-2 from binding to high-affinity IL-2 receptors on Tregs, vasculature, pulmonary tissue and eosinophils. This redirects IL-2 to medium-affinity receptors on effector T cells (Teffs) and natural killer (NK) cells, which expand and kill tumor cells.

Aulos anticipates presenting preliminary data from the Phase 2 cohort evaluating AU-007, nivolumab and low-dose, subcutaneous aldesleukin as a second-line treatment for melanoma in the second half of 2025. The company will present new Phase 2 data for AU-007 and low-dose, subcutaneous aldesleukin without a checkpoint inhibitor as a second-line treatment for melanoma at the American Association for Cancer Research (AACR) (Free AACR Whitepaper) Annual Meeting later this month.

To learn more about the AU-007 clinical trial program, please visit ClinicalTrials.gov (identifier: NCT05267626). For patients and providers in the U.S., please visit www.solidtumorstudy.com. For patients and health professionals in Australia, please visit www.solidtumourstudy.com.

About AU-007
AU-007 is a human IgG1 monoclonal antibody designed by leveraging artificial intelligence that is highly selective to the CD25-binding portion of IL-2. With a mechanism of action unlike any other IL-2 therapeutic in development, AU-007 redirects IL-2 to reinforce anti-tumor immune effects. This is achieved by preventing IL-2, either exogenous or secreted by effector T cells, from binding to trimeric receptors on regulatory T cells while still allowing IL-2 to bind and expand effector T cells and NK cells. This prevents the negative feedback loop caused by other IL-2-based treatments and biases the immune system toward activation over suppression. AU-007 also prevents IL-2 from binding to CD25-containing receptors on eosinophils, as well as vasculature and pulmonary endothelium, which may significantly reduce the vascular leak syndrome and pulmonary edema associated with high-dose IL-2 therapy.