Skip to content

Dose Confirmation and Dose Expansion Phase 1 Study of IO-108 and IO-108 + Anti-PD-1 in Solid Tumors

A Phase 1, Open-Label, Multicenter Study Investigating Safety, Tolerability, Pharmacokinetics and Preliminary Efficacy of IO-108 as Monotherapy and in Combination With Anti-PD-1 Monoclonal Antibody in Adult Patients With Advanced or Metastatic Solid Tumors

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05508100
Enrollment
38
Registered
2022-08-19
Start date
2022-09-09
Completion date
2024-04-30
Last updated
2024-05-24

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

Conditions

Advanced Solid Tumor

Brief summary

This is a Phase 1 study to evaluate the safety, tolerability, PK, and preliminary efficacy of IO-108 monotherapy and in combination with anti-PD-1 monoclonal antibody pembrolizumab or tislelizumab in adult patients with advanced solid tumors. The study will be conducted in 3 parts, including Part A IO-108 monotherapy dose confirmation; Part B IO-108 + anti-PD-1 dose confirmation, and Part C dose expansion.

Interventions

BIOLOGICALIO-108

IO-108, intravenously, on Day 1 of each 21-day cycle.

BIOLOGICALIO-108 + pembrolizumab

IO-108, intravenously, on Day 1 of each 21-day cycle. Pembrolizumab will be administered intravenously on Day 1 of each 21-day cycle.

BIOLOGICALIO-108 + tislelizumab

IO-108, intravenously, on Day 1 of each 21-day cycle. Tislelizumab will be administered intravenously on Day 1 of each 21-day cycle.

Sponsors

Immune-Onc Therapeutics
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

1. Age ≥18, and \< 75. 2. Part A and Part B Cohort 1: Patients must have histologically or cytologically confirmed advanced or metastatic solid tumor and have failed, or have been intolerant for standard systemic therapy, or for whom no treatment known to confer clinical benefit exists. Part B Cohort 2 and Part C: Patient with advanced or metastatic solid tumor who meet the specific criteria. 3. Patients have at least 1 measurable disease per RECIST v1.1 as assessed by local clinical site. 4. Eastern Cooperative Oncology Group (ECOG) performance status 0 to 1. 5. Patients must have adequate hematologic function, hepatic function and renal function.

Exclusion criteria

1. Patients who previously received a monoclonal antibody therapy targeting LILRB2/ILT4 (including IO-108). 2. Patients who received chemotherapy, radiotherapy, biologic therapy, targeted therapy, immunotherapy, or other investigational anti-cancer therapy \< 4 weeks prior to their first day of study drug administration. 3. Requires systemic corticosteroids at a dose of \>10 mg daily of prednisone or the dose equivalent to other systemic corticosteroid, or other immunosuppressive agents ≤ 14 days prior to the first dose. 4. History of radiation pneumonitis, non-infectious pneumonitis or interstitial lung disease expect for radioactive pulmonary fibrosis not requiring corticosteroid treatment. 5. Symptomatic central nervous system (CNS) metastases. Note: Other protocol defined Inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Incidence of treatment-emergent adverse events (TEAEs), serious adverse events (SAEs), and dose-limiting toxicities (DLTs) in patients treated with IO-108through study completion, an average of 2 yearsAE severity graded by National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE), Version 5.0
Incidence of treatment-emergent adverse events (TEAEs), serious adverse events (SAEs), and dose-limiting toxicities (DLTs) in patients treated with IO-108 in combination with pembrolizumab or tislelizumabthrough study completion, an average of 2 yearsAE severity graded by NCI CTCAE, Version 5.0
Preliminary anti-tumor activity of IO-108 in combination with pembrolizumab or tislelizumabthrough study completion, an average of 2 yearsORR is defined as the percentage of patients who have a complete response (CR) or a partial response (PR) per RECIST v1.1

Secondary

MeasureTime frameDescription
Maximum plasma concentration (Cmax) of IO-108through study completion, an average of 2 yearsCharacterize the Cmax of IO-108 by successive sampling of blood at pre-specified time points
Preliminary anti-tumor activitythrough study completion, an average of 2 yearsDisease Control Rate, defined as the percentage of patients with CR, PR, or stable disease.
Steady state concentration of IO-108through study completion, an average of 2 yearsCharacterize steady state concentration of IO-108 by successive sampling of blood at pre-specified time points
Anti-drug antibodies (ADA) of IO-108through study completion, an average of 2 yearsDetermine the incidence and titer of ADAs against IO-108

Countries

China

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026