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RecruitingNCT07423117ClinicalTrials.gov record

A Study of ITC-6146RO in Patients With Advanced or Metastatic Cancer Who Have Failed Standard Therapy

Metastatic Castration-resistant Prostate Cancer · Non-small Cell Lung Cancer · Triple Negative Breast Cancer · Metastatic Solid Tumor

THE QUICK READ

What this study involves

The registry says this study is recruiting. Individual locations may have different availability.

Study type
Interventional
Phase
Phase 1
Age range
18 years - Not specified
Sex eligible
All sexes
Healthy volunteers
Not accepted
Participants
102 Estimated

These are starting points, not an eligibility decision. The research team must review the full requirements.

About the research

The study consists of Phase 1a (dose escalation) and Phase 1b (dose expansion). In Phase 1a, sequential cohorts of subjects will receive escalating doses of ITC-6146RO to determine maximum tolerated dose (MTD) and/or optimal biological dose (OBD).

In Phase 1b, the recommended phase 2 dose (RP2D) chosen from Phase 1a will be evaluated to further investigate safety, tolerability, pharmacokinetic (PK) and anti-tumor efficacy of ITC-6146RO.

Who may be able to participate?

The list below is the sponsor’s full registry wording. It can include conditions, prior treatment, test results and other requirements. A match in search does not mean you qualify.

Inclusion Criteria:

1. Adult males and females aged ≥ 19 years (Korea) or ≥ 18 years (United States)
2. Patients must be individuals who have voluntarily agreed to participate in the study after receiving a detailed explanation and fully understanding the nature of the clinical trial, and who have provided written informed consent.
3. Pathological confirmation of malignancy and evidence of metastatic or surgically unresectable disease
4. Patients must have at least one evaluable or measurable lesion based on Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST version 1.1). However, for patients with prostate cancer, eligibility will be determined based on Prostate Cancer Working Group 3 (PCWG3)
5. Patients who have received standard therapies and have no remaining clinically available approved treatment options.
6. Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1
7. Estimated life expectancy of ≥ 3 months

Exclusion Criteria:

1. Inability to comply with study and follow-up procedures
2. Patients with a prior history of anticancer therapy before the first dose
3. History of another active malignancy within the past 3 years
4. Patients with central nervous system metastases, leptomeningeal disease, or spinal cord compression.
5. Patients who are currently participating in a clinical trial or have participated in a clinical trial involving a medical device or investigational product within 28 days prior to the first administration of ITC-6146RO
6. Has prior treatment with duocarmycin-containing agents
7. Pregnancy, lactation, or breastfeeding
8. Known Human immunodeficiency virus (HIV), Hepatitis C virus (HCV) and Hepatitis B virus (HBV) infection with active disease exception of the following conditions.
9. Tuberculosis with active disease
10. Active infection necessitating systemic therapy
11. Prior allogenic bone marrow transplantation or solid organ transplantation
12. History of autoimmune disease, treatment with systemic immunosuppressive medications
13. Patients with clinically significant pulmonary disease

Understand screening

Treatment, groups and participation

The registry may describe treatments and study duration without a complete visit calendar. Ask the study team for the exact schedule, procedures, risks, costs and alternatives. Keep your usual care plan unless your treating clinician tells you otherwise.

Assignment
Not applicable
Masking
No masking
Phase 1a/b

The study consists of a Phase 1a dose-escalation part and a Phase 1b dose-expansion part.

Drug: ITC-6146RO

ITC-6146RO DRUG

ITC-6146RO will be administered as an intravenous (IV) infusion at protocol-specified dose levels and schedules in Phase 1a (dose escalation) and Phase 1b (dose expansion).

Prepare your questions

What researchers are measuring

Outcome measures describe what is being studied. They are not proof that a treatment works.

Primary measures

Phase 1a (Dose Escalation) Incidence of Adverse Events (AEs)

Time frame: Through study completion (Up to 2 years)

Grade 3 and 4 AEs, Treatment Emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs), Dose-limiting toxicities (DLTs) and AEs leading to discontinuation of study treatment, Evaluation of all-grade cardiac, renal, and pulmonary AEs , n, (%)

Phase 1b (Dose Expansion) Incidence of AEs

Time frame: Through study completion (Up to 2 years)

Grade 3 and 4 AEs, TEAEs, SAEs and AEs leading to discontinuation of study treatment, Evaluation of all-grade cardiac, renal, and pulmonary AEs, n, %

Secondary measures

Phase 1a (Dose Escalation) Maximum Tolerated Dose (MTD) or Optimal Biological Dose (OBD) of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

MTD/OBD will be reported as the final selected dose level for further investigation from Phase 1a dose escalation. MTD is determined by DLTs observed during the prespecified DLT observation period, and OBD is determined by meeting prespecified biological activity criteria (as defined in the protocol).

Phase 1a (Dose Escalation) Area Under the Plasma Concentration-Time Curve From Time 0 to the Last Quantifiable Concentration (AUClast) After Single-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Plasma AUClast following a single dose of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Area Under the Plasma Concentration-Time Curve From Time 0 to Infinity (AUCinf) After Single-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Plasma AUCinf following a single dose of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Maximum Observed Plasma Concentration (Cmax) After Single-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Plasma Cmax following a single dose of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Terminal Elimination Half-life (t1/2) After Single-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Plasma terminal elimination half-life (t1/2) following a single dose of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Time to Maximum Observed Plasma Concentration (Tmax) After Single-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Plasma Tmax following a single dose of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Apparent Clearance (CL) After Single-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Plasma apparent clearance (CL) following a single dose of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Apparent Volume of Distribution (Vz) After Single-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Plasma apparent volume of distribution (Vz) following a single dose of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Area Under the Plasma Concentration-Time Curve From Time 0 to the Last Quantifiable Concentration (AUClast) After Multiple-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Plasma AUClast following multiple-dose administration of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Maximum Observed Plasma Concentration at Steady State (Cmax,ss) After Multiple-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Plasma Cmax,ss (as applicable) following multiple-dose administration of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Trough Plasma Concentration at Steady State (Ctrough,ss) After Multiple-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Plasma Ctrough,ss (as applicable) following multiple-dose administration of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Average Plasma Concentration Over the Dosing Interval at Steady State (Cav,τ) After Multiple-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Plasma Cav,τ (as applicable) following multiple-dose administration of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Terminal Elimination Half-life at Steady State (t1/2,ss) After Multiple-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Plasma terminal elimination half-life at steady state (t1/2,ss) (as applicable) following multiple-dose administration of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Time to Maximum Observed Plasma Concentration at Steady State (Tmax,ss) After Multiple-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Plasma Tmax,ss (as applicable) following multiple-dose administration of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Apparent Clearance at Steady State (CLss) After Multiple-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Plasma apparent clearance at steady state (CLss) (as applicable) following multiple-dose administration of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Apparent Volume of Distribution at Steady State (Vss) After Multiple-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Plasma apparent volume of distribution at steady state (Vss) (as applicable) following multiple-dose administration of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Accumulation Ratio After Multiple-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Accumulation ratio (as applicable) following multiple-dose administration of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Peak-to-Trough Fluctuation (PTF) After Multiple-Dose Administration of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Peak-to-trough fluctuation (PTF) (as applicable) following multiple-dose administration of ITC-6146RO will be calculated from plasma concentration-time data and summarized descriptively.

Phase 1a (Dose Escalation) Incidence of Anti-Drug Antibodies (ADAs) to ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Percentage of participants with detectable ADAs to ITC-6146RO (ADA-positive) based on a validated immunoassay.

Phase 1b (Dose Expansion) Population Pharmacokinetic (PopPK) Parameters of ITC-6146RO

Time frame: Through study completion (Up to 2 years)

PopPK parameters (e.g.,clearance and volume of distribution) will be estimated using PopPK modeling based on measured ITC-6146RO concentrations.

Phase 1b (Dose Expansion) Incidence of Anti-Drug Antibodies (ADAs) and Neutralizing Antibodies (NAbs) to ITC-6146RO

Time frame: Through study completion (Up to 2 years)

Percentage of participants with detectable ADAs, including NAbs, to ITC-6146RO, as determined by validated immunoassay and neutralization assays (as applicable).

Phase 1a/b (Dose Escalation, Dose Expansion) Objective Response Rate (ORR) by Investigator per RECIST v1.1

Time frame: Through study completion (Up to 2 years)

ORR will be assessed by the investigator per RECIST v1.1

Phase 1a/b (Dose Escalation, Dose Expansion) Duration of Response (DoR) by Investigator per RECIST v1.1

Time frame: Through study completion (Up to 2 years)

DoR will be assessed by the investigator per RECIST v1.1

Phase 1a/b (Dose Escalation, Dose Expansion) Time to Response (TTR) by Investigator per RECIST v1.1

Time frame: Through study completion (Up to 2 years)

TTR will be assessed by the investigator per RECIST v1.1

Phase 1a/b (Dose Escalation, Dose Expansion) Progression-Free Survival (PFS) by Investigator per RECIST v1.1

Time frame: Through study completion (Up to 2 years)

PFS will be assessed by the investigator per RECIST v1.1

Other measures

Phase 1b (Dose Expansion) Association Between ITC-6146RO Pharmacokinetic Parameters and Efficacy and Safety Endpoints

Time frame: Through study completion (Up to 2 years)

Correlation between ITC-6146RO pharmacokinetic (PK) parameters and selected efficacy, safety, and exploratory endpoints. Efficacy endpoints may include objective response rate (ORR) and progression-free survival (PFS). Associations will be evaluated using appropriate exposure-response analyses.

Phase 1a/b (Dose Escalation, Dose Expansion) Overall Survival (OS)

Time frame: Through study completion (Up to 2 years)

OS is defined as the time from randomization until death from any cause.

Phase 1a/b (Dose Escalation, Dose Expansion) Association Between B7-H3 Expression in Tumor Tissue and Anti-Tumor Efficacy

Time frame: Through study completion (Up to 2 years)

Correlation between B7-H3 expression in tumor tissue assessed by immunohistochemistry (IHC) and anti-tumor efficacy endpoints, including objective response rate (ORR) and progression-free survival (PFS). ORR is defined as the proportion of participants with confirmed complete or partial response, and PFS as time to disease progression or death per protocol-defined criteria. Associations will be evaluated using appropriate statistical methods. In participants with metastatic castration-resistant prostate cancer (mCRPC), PSA response rate (≥50% decline from baseline) and time to PSA progression will also be assessed.

No results are flagged as posted.

Review the complete result tables and limitations in the official record.

Open official results ↗

Research locations (3)

The overall study status and a local site’s status can differ. Confirm that location’s availability before traveling.

3 locations

Severance HospitalSeoul, Seoul, South KoreaRecruiting
Asan Medical CenterSeoul, Seoul, South KoreaRecruiting
Samsung Medical CenterSeoul, Seoul, South KoreaRecruiting

Study team and timeline

Lead sponsor
IntoCell, Inc
Study start
Mar 24, 2026 Actual
Primary completion
Jun 30, 2027 Estimated
Study completion
Dec 31, 2029 Estimated
First posted
Feb 20, 2026 Actual
Last updated
Nov 10, 2026 Actual

Official study contacts

Official study title

A Phase 1a/b, Open-label, Multicenter, First-in-human, Dose Escalation/Expansion Study With Multiple Cohorts to Evaluate the Safety, Tolerability, Pharmacokinetics and Preliminary Anti-tumor Efficacy of ITC-6146RO in Patients With Advanced or Metastatic Cancer Who Have Failed Standard Therapy

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Source: ClinicalTrials.gov API v2. Information is submitted by sponsors and investigators. NLM does not approve the safety or science of all listed studies. Registry disclaimer.

Retrieved: Nov 12, 2026 · Last registry update: Nov 10, 2026