Integrin beta-6 (IB6) is a tumor-associated membrane protein involved in many cellular processes, including wound healing and tissue remodeling. While IB6 expression is constitutively low in healthy tissues, high IB6 expression in numerous cancers, including non-small cell lung cancer (NSCLC), is associated with poor outcomes. In a phase I study, the novel IB6-directed vedotin-based antibody-drug conjugate sigvotatug vedotin (SV) showed manageable safety and encouraging efficacy as a monotherapy and in combination with pembrolizumab in patients with advanced solid tumors, including NSCLC. Based on those results, the phase III Sigvie-003 study is evaluating SV plus pembrolizumab compared with pembrolizumab monotherapy as first-line treatment in adult patients with locally advanced, unresectable, or metastatic NSCLC with high programmed cell death ligand 1 expression (tumor proportion score
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