Study of Denikitug (GS-1811) Given Alone or With Nivolumab or With Chemotherapy in Adults With Advanced Colorectal Cancer

Summary

The goal of this clinical study is to learn more about the study drug, Denikitug (DEN, GS-1811), to evaluate the efficacy and safety of Denikitug Monotherapy and Denikitug-based Combinations in participants with advanced microsatellite stable (MSS) colorectal cancer (CRC). The primary objective of this study is to assess the effect of DEN as monotherapy and in combination with nivolumab (NIVO) or trifluridine-tipiracil (FTD-TPI) and bevacizumab (BVZ) on objective response rate (ORR) as assessed by the investigator according to Response Evaluation Criteria in Solid Tumors (RECIST Version 1.1).

Eligibility

Key Inclusion Criteria:

Medical History/Physical Characteristics

* Histologically or cytologically confirmed unresectable, recurrent, or locally advanced or metastatic microsatellite stable colorectal cancer (MSS CRC) (adenocarcinoma, excluding appendix cancer).
* Documented MSS or proficient mismatch repair (pMMR) disease by local assessment using a validated polymerase chain reaction (PCR) (microsatellite status) and/or immunohistochemistry (IHC) mismatch repair (MMR) assay is required.
* Has received up to 2 prior lines of systemic therapy for advanced or metastatic CRC, which must have included at least fluoropyrimidine-, oxaliplatin-, irinotecan-based chemotherapies if indicated; and if applicable: anti-vascular endothelial growth factor (VEGF) therapy, anti epidermal growth factor receptor (EGFR) therapy, encorafenib or adagrasib/sotorasib.
* Documented progressive disease (PD) by computed tomography (CT) or magnetic resonance imaging (MRI) during or after the most recent therapy per RECIST Version 1.1 criteria by investigator assessment.
* Eastern Cooperative Oncology Group (ECOG) performance status score of 0-1.

Laboratory Assessments

* Have adequate organ function.

Key Exclusion Criteria with:

Medical Conditions/History:

* Significant cardiovascular disease.
* History of autoimmune disease or active autoimmune disease that has required systemic treatment within 2 years.
* History of (noninfectious) pneumonitis/interstitial lung disease or current pneumonitis/ interstitial lung disease.
* History of gastrointestinal (GI) perforation, permanent ileostomy, abdominal abscess or fistula within 6 months, active or uncontrolled GI bleeding within 4 weeks, or any condition associated with significant risk of bleeding or perforation (eg, untreated varices, tumor erosion, recent GI surgery).

Prior/Concurrent Therapy or Clinical Study Experience

Prior treatment with:

* Trifluridine-tipiracil, regorafenib, or fruquitinib.
* Any immuno-oncology therapy.
* Anticancer biologic agent within 4 weeks prior to randomization or have had prior chemotherapy, targeted small molecule therapy, or radiation therapy within 2 weeks prior to randomization and have not recovered (ie, Grade 2 or less) from AEs from prior anticancer therapy at the time of randomization. Individuals in observational studies are eligible.
* Allogeneic tissue/solid organ transplantation, including allogeneic stem cell transplantation. Exception: prior corneal transplant without requirement for systemic immunosuppressive agents is allowed.

Note: Other protocol defined Inclusion/Exclusion criteria may apply.

Conditions2

Interventions4

Locations5 sites

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