Coherus Presents Preliminary Results from Phase I Dose Escalation Study of its Anti-chemokine receptor 8 (CCR8) Antibody, CHS-114, at the 2024 American Society of Clinical Oncology (ASCO) Annual Meeting

CHS-114 shown to have an acceptable safety profile with no dose-limiting toxicities (DLTs) in heavily pretreated patients with solid tumors

Selective depletion of peripheral CCR8+ regulatory T cells (Tregs) was observed and depletion was maintained over the dosing interval, establishing proof of mechanism

Preclinical data and preliminary clinical results support further evaluation of CHS-114 in combination with the anti-programmed cell death protein 1 (PD-1) antibody, toripalimab-tpzi, and other immuno-oncology (IO) agents

REDWOOD CITY, Calif., May 23, 2024 (GLOBE NEWSWIRE) -- Coherus BioSciences, Inc. (Coherus, Nasdaq: CHRS), today announced clinical data from the CHS-114, single agent dose escalation stage of its Phase 1 study at the ASCO Annual Meeting, taking place May 31 to June 4, 2024, at McCormick Place in Chicago. CHS-114 is a novel afucosylated human immunoglobulin G1 (IgG1) monoclonal antibody (mAb) that selectively and potently targets human CCR8 with no off-target binding. CCR8 is a G protein-coupled receptor (GPCR) that shows preferential expression on tumor resident Treg cells and has promise as a drug target for selectively targeting immune suppression in the tumor microenvironment (TME) without broadly depleting Treg cells, which has the known unwanted side effect of autoimmune activation.

“The Phase 1 preliminary dose escalation results are an important milestone as we progress our innovative I-O pipeline. We are very pleased with the safety profile, the predictable dose proportional pharmacokinetic profile, and the selective depletion of peripheral CCR8+ Tregs that were observed,” said Rosh Dias, M.D., Coherus’ Chief Medical Officer. “By targeting CCR8, we believe CHS-114 has the potential to overcome Treg immune suppression in the TME and allows T cell recruitment, which turns cold tumors hot and enhances anti-tumor activity when combined with I-O agents. The data support further evaluation of CHS-114 in combination treatment with our anti-PD-1 antibody, toripalimab, and other I-O agents.”

CCR8 is a chemokine receptor predominantly expressed by tumor infiltrating Tregs that suppress the body’s natural anti-cancer immune response. Targeting CCR8 is a promising potential therapeutic strategy designed to selectively deplete intratumoral CCR8+ Tregs, reshape the tumor microenvironment by alleviating local immunosuppression, and enhance anti-tumor immune response when combined with I-O agents. Data presented at ASCO demonstrate proof of mechanism for selective depletion of CCR8+ Tregs and an acceptable safety profile to date.