Michael Wang, MD, University of Texas MD Anderson Cancer Center, Houston, TX, discusses the results of a Phase I study aiming to evaluate the clinical efficacy and safety of VLS-101 in previously treated patients with ROR1-expressing tumors. Over the course of the trial, few adverse events were reported, none of them severe. The objective tumor responses were observed in 47% of patients with mantle cell lymphoma (MCL) and 80% of patients with diffuse large B-cell lymphoma (DLBCL), with some patients achieving a complete response. The results of this study confirm the tumor selectivity and predictable safety profile of VLS-101, which is consistent with other MMAE-containing antibody-drug conjugates (ADCs). The observed response rates provide clinical proof of concept for targeting ROR1 with VLS-101. This interview took place during the 62nd American Society of Hematology (ASH) Annual Meeting and Exposition, 2020.