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A Study of GI-108, an Anti-CD73-IgG4 Fc-IL-2v Bispecific Fusion Protein, as Monotherapy in Patients With Advanced or Metastatic Solid Tumors

An Open-label, Multicenter, Dose Escalation and Expansion Phase 1/2 Study to Evaluate the Safety, Tolerability and Pharmacokinetics, and Anti-tumor Activity of GI-108, an Anti-CD73-IgG4 Fc-IL-2v Bispecific Fusion Protein, as a Single Agent in Patients With Advanced or Metastatic Solid Tumors

Status
Recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07172802
Enrollment
102
Registered
2025-09-15
Start date
2025-04-22
Completion date
2027-09-01
Last updated
2026-09-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Advanced Solid Tumor, Head and Neck (HNSCC), Metastatic Solid Tumor, Non-small Cell Lung Cancer (NSCLC), Pancreatic Cancer, Renal Cell Carcinoma (RCC)

Keywords

GI-108

Brief summary

The purpose of this study is to evaluate the safety, tolerability, pharmacokinetics, and therapeutic activity of GI-108, as a single agent, in patients with advanced or metastatic solid tumors

Detailed description

This is an open-label, multicenter, dose escalation and expansion, phase 1/2 study to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD) and anti-tumor activity of GI-108 as a single agent in advanced or metastatic solid tumors. A control arm is not included. The study is composed of two phases: * Dose escalation phase * Dose expansion phase The dose escalation phase will enroll up to 62 patients with advanced or metastatic solid tumors. At least 3 dose-limiting toxicity (DLT) evaluable patients will be enrolled in each cohort during the dose escalation to establish a maximum tolerated dose (MTD) or tentative recommended phase 2 dose (RP2D). Enrollment in each cohort may be extended to enroll additional 4\ 7 patients (aiming to recruit up to 10 patients including DLT evaluable patients per cohort), potentially enriched in certain tumor types and/or characteristics to confirm safety, PK and/or pharmacodynamics (PD) of GI-108. The Safety Monitoring Committee (SMC) will determine extension of each cohort based on the review of all available clinical data including efficacy, safety, PK and/or PD. Of the 7 planned cohorts in the dose escalation phase, up to 5 cohorts may be extended to include additional patients based on safety, efficacy PK and/or PD data. The evidence of enrollment extension should be documented for each cohort during dose escalation phase.

Interventions

DRUGGI-108

Dose level will be escalated from 0.1mg/kg to 1.5 mg/kg and Recommended phase 2 dose (or RP2D) of GI-108 will be administered via IV infusion Q3W upto 2 years (approximately 35 cycles)

Sponsors

GI Innovation, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: * Males and females aged ≥ 18 years (or ≥ 19 years according to local regulatoryguidelines) at the time of screening. * Has adequate organ and marrow function as defined in protocol. * Measurable disease as per RECIST v1.1. * ECOG performance status 0-1. * Adverse events related to any prior chemotherapy, radiotherapy, immunotherapy,other prior systemic anti-cancer therapy, or surgery must have resolved to Grade≤1, except alopecia and Grade 2 peripheral neuropathy. * HIV infected patients must be on anti-retroviral therapy (ART) and have a well-controlled HIV infection/disease as defined in protocol. Key

Exclusion criteria

* Has known active CNS metastases and/or carcinomatous meningitis. An active second malignancy. * Has active or a known history of Hepatitis B or known active Hepatitis C virus infection. * Has active tuberculosis or has a known history of active tuberculosis. Active or uncontrolled infections, or severe infection within 4 weeks before study treatment administration. * History of chronic liver disease or evidence of hepatic cirrhosis, except patients with liver metastasis. * Has an active autoimmune disease that has required systemic treatment in past 2 years. * Previous immunotherapies related to mode of action of GI-102. Has a diagnosis of immunodeficiency or is receiving chronic systemic steroidtherapy or any other form of immunosuppressive medications within 2 weeksprior to Cycle 1 Day 1.

Design outcomes

Primary

MeasureTime frameDescription
Incidence of Dose-Limiting Toxicities (DLTs) (Dose escalation phase)Study Day 1, assessed up to DLT period (3 weeks after treatment)Number and proportion of subjects experiencing DLTs during dose escalation, used to determine MTD and/or RP2D.
Incidence and Severity of Immune-Related Adverse Events (irAEs) (Dose escalation phase)From Day 1 through study completion (up to ~24 months)Number and proportion of subjects with immune-related AEs, graded per CTCAE v5.0.
Objective Response Rate (ORR) according to RECIST version 1.1 (Dose expansion phase)Study Day 1, assessed up to approximately 24 monthsBased on Investigator review of radiographic imaging

Secondary

MeasureTime frameDescription
Objective Response Rate (ORR) according to RECIST version 1.1 (Dose escalation phase)Study Day 1, assessed up to approximately 24 monthsBased on Investigator review of radiographic imaging
Incidence and Severity of Immune-Related Adverse Events (irAEs) (Dose expansion phase)Day 1 through study completion, up to ~24 monthsNumber and proportion of subjects with immune-related AEs, graded per CTCAE v5.0.
Disease Control Rate (DCR)Study Day 1, assessed up to approximately 24 monthsDCR is defined as the percentage of patients who have achieved CR, PR and stable disease (SD), per RECIST v1.1 guideline as determined by the investigators.
Duration of objective response (DoR)Study Day 1, assessed up to approximately 24 monthsDCR is defined as the time from the first occurrence of a documented objective response to the time of the first document disease progression or death from any cause, whichever occurs first, per RECIST v1.1 as determined by the investigator.
Progression-free survival (PFS)6-month, 12-month, and 18-monthPFS is defined as the time from the first study treatment (Day 1) to the first occurrence of progression or death from any cause, whichever occurs first, per RECIST v1.1 guideline as determined by the investigator
Overall survival (OS)12-month and 18-monthOS is defined as the time from the first study treatment to death from any cause
Peak plasma concentration (Cmax) of GI-108Study Day 1, assessed up to approximately 24 monthsBased on the concentration vs time profile by dose level
Half-life of GI-108 (T1/2)Study Day 1, assessed up to approximately 24 monthsBased on the concentration vs time profile by dose level
Area under the plasma concentration versus time curve (AUC) of GI-108Study Day 1, assessed up to approximately 24 monthsBased on the concentration vs time profile by dose level
Clearance of GI-108Study Day 1, assessed up to approximately 24 monthsBased on the concentration vs time profile by dose level
Volume of distribution (Vd) of GI-108 after administrationStudy Day 1, assessed up to approximately 24 monthsBased on the concentration vs time profile by dose level

Countries

South Korea

Contacts

CONTACTHye Su Min, PhD
clinical-108@gi-innovation.com+82-2-404-2003

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 18, 2026