Core Insights - The SB221 study demonstrates positive safety results for SON-1010 in combination with atezolizumab for patients with platinum-resistant ovarian cancer (PROC) [1][5] - The maximum tolerated dose (MTD) of SON-1010 was established at 1200 ng/kg without dose-limiting toxicity or cytokine release syndrome [1][3] - The study showed a partial response (PR) in one patient and stable disease (SD) in 33% of evaluable patients at four months [1][5] Study Design and Results - The SB221 study aimed to assess the safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) of SON-1010 with atezolizumab, focusing on establishing the MTD [2][8] - A total of 19 subjects were treated, with one patient achieving a PR at the highest dose [2] - Common adverse effects included fatigue, fevers, and gastrointestinal symptoms, with no significant toxicity observed [3][5] Clinical Implications - The results indicate that SON-1010 may enhance the efficacy of immune checkpoint inhibitors (ICIs) in treating 'cold' tumors like ovarian cancer [4][5] - The study's findings are encouraging given the historical safety concerns associated with rhIL-12, suggesting a potential for improved tumor control [5][6] - The ongoing trial will assess longer-term safety and tumor responses, with a focus on expanding the dataset for efficacy evaluation [6][8] Company Overview - Sonnet BioTherapeutics is focused on developing targeted biologic drugs using its Fully Human Albumin-Binding (FHAB) platform [10][11] - SON-1010 is designed to deliver IL-12 to tumor tissues, potentially improving the safety and efficacy profile of immunomodulators [7][10] - The company is also exploring partnerships to support the later stages of SON-1010's development [6][11]
Sonnet’s SON-1010 Demonstrates a Strong Safety Profile in Combination with Atezolizumab for Treatment of Platinum-Resistant Ovarian Cancer, Including a Partial Response at the Highest Dose