The investigational anti-B7-H3 antibody-drug conjugate vobramitamab duocarmazine exerts anti-tumor activity in vitro and in vivo in pediatric sarcoma preclinical models.

ABSTRACT: Prognosis for pediatric sarcoma (pSC)-affected patients, especially those with relapsed/refractory disease, is dismal. The available treatment options are unsatisfactory, challenging researchers to address this unmet need. The investigational B7-H3 targeted ADC vobramitamab duocarmazine (vobra duo) showed clinical effectiveness towards several B7-H3-positive adult tumors and pre-clinical efficacy in pediatric neuroblastoma models. Cytotoxicity of vobra duo was evaluated in 2D and 3D models toward pSC cell lines expressing B7-H3, showing a dose-dependent cell viability reduction. Proliferation was assessed by time-lapse single-cell segmentation. Compared to controls, vobra duo resulted in a significant increase in the cell doubling time. AKT/mTOR master effectors of cell proliferation were

SUBMITTER: Bianchi G 

PROVIDER: S-EPMC12877178 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature