1.ROR1 ANTIBODY IMMUNOCONJUGATES
LANNUTTI, Brian, et al.
Cancer is the second leading cause of human death next to coronary artery disease.Receptor tyrosine kinases (RTKs) play a key role in oncogenic transformation, growth andmetastases. RTKs regulate cell differentiation, proliferation, migration, angiogenesis, andsurvival. The receptor tyrosine kinase-like orphan receptor 1 (ROR1) is an evolutionarilyconserved type I membrane protein that belongs to the ROR subfamily and has extracellulardomains that contain immunoglobulin (Ig)-like, Frizzled, and Kringle domains. ROR 1-deficientmice display a variety of phenotypic defects within the skeletal and urogenital systems, as wellas postnatal growth retardation. ROR1 is expressed during embryogenesis and by a variety ofdifferent cancers, but not by normal post-partum tissues, and can be considered an oncoembryonic surface antigen. Functional data suggest that ROR1 may function in non-canonicalWNT-signaling to promote the survival of malignant cells.