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Genmab and Incyte Announce Clinical Trial Collaboration in Metastatic Colorectal Cancer

Incyte
  • Phase 1/2 study will evaluate petosemtamab plus INCB161734 and standard-of-care chemotherapy in first-line KRAS G12D-mutated metastatic colorectal cancer (mCRC)

COPENHAGEN, Denmark & WILMINGTON, Del., October 24, 2026--Genmab A/S (Nasdaq: GMAB) and Incyte (Nasdaq: INCY) today announced a clinical trial collaboration to evaluate petosemtamab, Genmab's investigational IgG1-bispecific antibody targeting the epidermal growth factor receptor (EGFR) and leucine-rich repeat containing G-protein-coupled receptor 5 (LGR5), in combination with INCB161734, Incyte's investigational, potent and selective KRAS G12D inhibitor, and standard-of-care chemotherapy as a first-line treatment for patients with metastatic colorectal cancer harboring a KRAS G12D mutation, an area with substantial unmet medical need.

"This collaboration supports our broader development strategy for petosemtamab as we explore its potential across treatment settings and in novel combinations," said Judith Klimovsky, M.D., Executive Vice President and Chief Development Officer, Genmab. "Partnering with Incyte enables us to evaluate this investigational combination in patients with KRAS G12D-mutated metastatic colorectal cancer, reflecting our commitment to research collaborations aimed at expanding potential treatment options for more patients."

"Metastatic colorectal cancer remains difficult-to-treat, underscoring the importance of evaluating novel combinations grounded in complementary scientific approaches with the potential to enhance efficacy," said Pablo J. Cagnoni, M.D., President, Incyte and Global Head of Research and Development. "Our collaboration with Genmab will explore the potential of combining KRAS G12D inhibition with LGR5-targeted EGFR inhibition and standard-of-care chemotherapy, with the goal of advancing a new first-line treatment approach for patients with metastatic colorectal cancer."

Under the collaboration, Genmab will conduct the Phase 1/2 study evaluating petosemtamab in combination with INCB161734 and standard-of-care chemotherapy in patients with KRAS G12D-mutated mCRC in the first-line setting. Incyte will co-fund the study and provide clinical supply of INCB161734.

KRAS mutations occur in approximately 40% of colorectal cancers, with G12D being the most common KRAS mutation. These cancers are associated with poor prognosis, underscoring the need for new treatment approaches. The collaboration reflects a shared focus on investigating whether agents with distinct and potentially complementary mechanisms, combined with standard-of-care chemotherapy, may offer a path toward a new treatment option for patients with KRAS G12D-mutated metastatic colorectal cancer.