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Study of Denikitug (GS-1811) Given Alone or With Nivolumab or Chemotherapy in Adults With Metastatic Gastric, Gastroesophageal Junction (GEJ), and Esophageal Adenocarcinomas

  • PhasePhase 2
  • StatusRecruiting
  • Planned enrollment120 people
  • Recruiting US sites3
  • SponsorGilead Sciences
  • RegistryNCT07546812

Recruitment re-checked on ClinicalTrials.gov Oct 30, 2026. Public record; not medical advice.

Study of Denikitug (GS-1811) Given Alone or With Nivolumab or Chemotherapy in Adults With Metastatic Gastric, Gastroesophageal Junction (GEJ), and Esophageal Adenocarcinomas: a one-minute explainerNCT075468121 min

Eligibility

Who can join

The film gives the main points. The full list below is copied from the registry; the study team makes the final decision.

  • Age18 Years to no maximum
  • SexAll
  • Healthy volunteersNo

You may be able to join if

  • Key Inclusion Criteria:
  • Histologically or cytologically confirmed diagnosis of locally advanced, unresectable, or metastatic gastric, gastroesophageal junction (GEJ), or esophageal adenocarcinoma (EAC).
  • Human epidermal growth factor receptor 2 (HER2)-negative status, as determined by local assessment using a validated immunohistochemistry assay, in situ hybridization or other amplification testing.
  • Has had disease progression during or after first line of systemic therapy for advanced or metastatic gastric, GEJ, or EACs, which must have included at least one of the following:
  • Platinum- and fluoropyrimidine-based chemotherapy.
  • Therapy with an anti-programmed cell death protein 1 (PD1) or anti-programmed cell death ligand 1 (anti-PD-L1) monoclonal antibody (patients with PD-L1-positive tumors must have received prior PD-1/PD-L1-based therapy).
  • Zolbetuximab or other Claudin-18 (CLDN18).2-targeted therapy, if indicated based on biomarker status.
  • Eastern Cooperative Oncology Group (ECOG) performance status score of 0-1.
  • Have adequate organ function.
  • Male individuals and female individuals of childbearing potential who engage in heterosexual intercourse must agree to use methods of contraception.
  • Key Exclusion Criteria:
  • Active or history of autoimmune disease requiring systemic treatment within 2 years, inflammatory bowel disease (IBD) (Crohn's/ulcerative colitis), celiac disease, or noninfectious enteritis/colitis. (Physiologic hormone replacement not considered systemic treatment).
  • History or current noninfectious pneumonitis/interstitial lung disease, including radiation-induced pneumonitis requiring steroids or active/recurrent pneumonitis of any etiology.
  • Documented microsatellite instability-high (MSI-H) or deficient mismatch repair (dMMR) disease by local polymerase chain reaction (PCR) (microsatellite status) and/or informed consent form (ICH) (mismatch repair (MMR)) assay
  • (For Part 2 only) Has known history of peripheral neuropathy ≥ Grade 2 (per National Cancer Institute(NCI)-Common Tenninology Criteria for Adverse Events (CTCAE) Version 5.0).
  • (For Part 2 only) Known coagulopathy that increases the risk of bleeding, bleeding diatheses. Any other Grade 3 or higher hemorrhage/bleeding event within 28 days prior to enrollment.
  • Prior/Concurrent Therapy or Clinical Study Experience
  • Prior treatment with DEN or other C-C chemokine receptor 8 (CCR8)-targeted agents.
  • Prior Lonsurf (trifluridine-tipiracil) or paclitaxel (PAC)-based regimens in the first-line setting for advanced/metastatic gastroesophageal adenocarcinoma.
  • Any systemic therapy (including investigational) targeting vascular endothelial growth factor (VEGF) or VEGF receptor (VEGFR) signaling pathways.
  • Anticancer biologic within 4 weeks, orchemotherapy, targeted small molecule, or radiation therapy within 2 weeks prior to enrollment with unresolved adverse events (AE)s (Grade >2). (Observational study participants are eligible).
  • Prior allogenic tissue/solid organ or stem cell transplantation. (Exception: corneal transplant not requiring systemic immunosuppression is allowed).
  • Note: Other protocol defined Inclusion/Exclusion criteria may apply.

The treatment

How it is intended to work

This is how the treatment is meant to work. Whether it helps, and how safe it is, is what this trial is testing.

anti-CCR8 monoclonal antibody GS-1811. A humanized immunoglobulin G1 (IgG1) afucosylated monoclonal antibody against C-C-chemokine receptor 8 (CCR8), with potential immunomodulating and antineoplastic activities. Upon administration, anti-CCR8 monoclonal antibody GS-1811 targets and binds to CCR8 on CCR8-positive, immunosuppressive tumor-infiltrating T-regulatory (TITR) cells in the tumor microenvironment (TME), and prevents chemokine ligand 1 (CCL1)-CCR8-mediated signaling. GS-1811 depletes CCR8-positive TITR cells via antibody-dependent cell-mediated cytotoxicity (ADCC), which may reactivate antitumor immune responses. CCR8 is specifically expressed by TITR cells in multiple types of cancer and plays a key role in immunosuppression. NCI Drug Dictionary

Treatments listed in the registry

  • Denikitug (Drug): Administered Intravenously
  • Nivolumab (Drug): Administered Intravenously
  • Ramucirumab (Drug): Administered Intravenously
  • Paclitaxel (Drug): Administered Intravenously

The study

Treatment groups

Randomized · Parallel · masking: None

Part 1: Arm A: DEN (Dose A) and NIVO (Experimental)

Participants will receive DEN Dose A as an IV infusion in combination with NIVO as an IV infusion.

Part 1: Arm B: DEN (Dose B) and NIVO (Experimental)

Participants will receive DEN Dose B as an IV infusion in combination with NIVO as an IV infusion.

Part 1: Arm C: DEN (Dose B) (Experimental)

Participants will receive DEN Dose B as an IV infusion.

Part 2: Arm D: Safety Run-in (SRI) Cohort (Experimental)

Participants will receive DEN in combination with ramucirumab (RAM) and paclitaxel (PAC). If dose for DEN is deemed safe during the SRI Cohort, the study will move forward into the Expansion Period.

Part 2: Arm D: Expansion Cohort (Experimental)

If DEN dose is deemed safe in Arm D: SRI Cohort, participants will receive DEN at recommended dose as an IV infusion in combination with RAM and PAC.

Goals

What the study measures

Main goals

  • Objective Response Rate (ORR) (Up to 4 years)

Other goals

  • Duration of Response (DOR)
  • Progression-Free Survival (PFS)
  • Overall Survival (OS)
  • Percentage of Participants Experiencing Treatment-Emergent Adverse Event (TEAEs) According to the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 5.0
  • Percentage of Participants Experiencing Clinical Laboratory Abnormalities According to the NCI CTCAE v5.0
  • Pharmacokinetic (PK) Parameter: Serum concentration of DEN
  • PK Parameter: Cmax for Denikitug
  • PK Parameter: AUCall for Denikitug
  • Percentage of Participants who Developed Treatment-Emergent Antidrug Antibody (ADA) Against Denikitug

Planned enrollment: 120 (estimated).

Where

Recruiting US sites

  • Massachusetts General Hospital, Boston, Massachusetts
  • New York Oncology Hematology, Albany, New York
  • Weill Cornell Medicine - New York Presbyterian Hospital, New York, New York

11 recruiting sites outside the US. Site status as of Oct 30, 2026. Check the live record before contacting a site.

Sources

Where this comes from

Registry record reviewed as fetched Oct 30, 2026, last updated by the sponsor Sep 20, 2026. Public record; not medical advice.

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