h1B8

h1B8 is an experimental **humanized monoclonal antibody** directed against **receptor tyrosine kinase-like orphan receptor 1**. It was reported in preclinical research as a high-specificity, high-affinity anti-ROR1 antibody with antitumor activity in lung cancer, liver cancer, and breast cancer mouse models. The published work also noted comparatively strong target-mediated internalization versus another anti-ROR1 antibody, suggesting potential suitability as a future **antibody-drug conjugate** backbone, although h1B8 itself was described as an unconjugated antibody in the available source material. No specific commercial developer or manufacturer was clearly identified from the provided evidence.