Silverback Therapeuticstm to Present Preclinical Data from Lead ImmunoTACtm Candidate, SBT6050, at Upcoming ASCO Virtual Scientific Program and AACR Virtual Annual Meeting

Silverback Therapeuticstm ("Silverback"), a biopharmaceutical company advancing a pipeline of therapies that are systemically delivered, but locally active, today announced that preclinical data supporting development of its lead ImmunoTACtm candidate, SBT6050, has been accepted for presentation at two upcoming oncology meetings. SBT6050 is a HER2-directed monoclonal antibody conjugated to a potent and highly specific TLR8 agonist that drives tumor-localized activation of myeloid cells. In preclinical models, activation of myeloid cells results in single agent anti-tumor immune responses, even in tumors lacking T cells. These data will be featured in virtual poster sessions at ASCO20 Virtual Scientific Program and AACR 2020 Virtual Annual Meeting.

ASCO20 Virtual Scientific Program

Title: SBT6050, a HER2-Directed TLR8 Therapeutic, is a Systemically Administered, Tumor-Targeted Human Myeloid Cell Agonist
Abstract ID: 3110
Presenter: Valerie Odegard, PhD, CSO
Virtual Presentation: Available online starting May 29, 2020 at 8:00 A.M. ET

AACR Virtual Annual Meeting 2020 Session II

Title: SBT6050, a HER2-Directed TLR8 ImmunoTACtm Therapeutic, is a Potent Human Myeloid Cell Agonist that Provides Opportunity for Single Agent Clinical Activity
Abstract ID: 1523
Presenter: Valerie Odegard, PhD, CSO
Virtual Presentation: Available online starting June 22 at 9:00 A.M. ET

About Silverback Therapeutics

Silverback Therapeutics is a privately held biopharmaceutical company advancing a pipeline of therapies that are systemically delivered, but locally active and target fundamental disease pathways. Silverback's ImmunoTACtm technology is a targeted therapy platform designed to promote local modulation of important biologic pathways which enables innovative therapeutic approaches for oncology, virology, and fibrosis. Silverback's lead candidate, SBT6050, is a novel immuno-oncology therapeutic comprised of a TLR8 specific agonist (a potent activator of myeloid cells) conjugated to a HER2-directed monoclonal antibody. Solid tumors, including those resistant to T cell targeted immunotherapy, are replete with myeloid cells. Activation and reprogramming of myeloid cells drives an innate immune response resulting in direct tumor killing and can also nucleate a T cell response. Successful activation of myeloid cells can lead to anti-tumor immunity, even in tumors that are resistant to immune checkpoint blockade. Clinical investigation of SBT6050 is expected to begin in 2H 2020. Silverback Therapeutics is located in Seattle, Washington. To learn more, visit www.silverbacktx.com.