Folate Receptor Alpha (FRα) is
overexpressed in a range of solid tumors with limited expression in normal
tissues, hence an attractive target for an antibody-drug conjugate (ADC).
Rina-S is comprised of a human
monoclonal antibody that selectively binds human FRα, a
novel cleavable hydrophilic linker, and a topoisomerase 1 inhibitor payload,
exatecan.
Rina-S demonstrates anti-tumor
activity in patients with endometrial and ovarian cancer (SITC 2023) at well
tolerated dose levels.
A first in human phase 1/2 study in
patients with advanced solid tumors is currently recruiting (NCT 05579366).