Positive Initial Ph 2 Data in Late-Line Solid Tumor Patients Treated With KRAS-Directed Immunotherapy (SLATE) announced
“We are highly encouraged by the early signs of efficacy from the SLATE immunotherapy program, in particular, from our product candidate targeting multiple KRAS oncogenic mutations in patients with advanced, treatment-refractory disease (SLATE-KRAS),” said Andrew Allen, M.D., Ph.D., Co-founder, President, and Chief Executive Officer of Gritstone. “We observe molecular responses in approximately 40% of all evaluable subjects receiving SLATE, and those seen in our NSCLC patients are correlating nicely with extended overall survival, which has been described in recent publications with checkpoint inhibitors. This relationship between OS and ctDNA response was also observed in our GRANITE individualized immunotherapy study in patients with advanced CRC, as published recently in Nature Medicine. Patients with NSCLC without a molecular response had a median overall survival of just 4.5 months, underscoring the encouraging efficacy signal with SLATE in this challenging context with high unmet need for alternative treatment options. The clinical and mechanistic observations across our shared and individualized neoantigen vaccine programs is strikingly consistent, as is the favorable safety and tolerability profile, reinforcing the therapeutic potential of our oncology vaccine programs.”
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