A Study With ABL103 in Subjects With Advanced or Metastatic Solid Tumors

NCT06126666 | Recruiting Phase 1 DMC

• 1 other identifier: ABL103-1001
• Study Type: interventional
• Target: 96
• Locations: 1 country
• Sites: 3

Brief Summary

This is a first-in-human Phase 1, single-arm, open-label, multicenter, multiple-dose, dose-escalation study of ABL103 to evaluate the safety, tolerability, MTD (maximum tolerated dose) and/or RP2D (recommended phase 2 dose), pharmacokinetics, immunogenicity, preliminary antitumor activity of ABL103 in subjects with any progressive locally advanced(unresectable) or metastatic solid tumor who are relapsed or refractory following the last line of treatment and have no available standard of care option. This study includes 2 parts: a dose-escalation part and tumor-expansion part

Conditions

Advanced Solid Tumor

Outcome Measures

Primary Outcomes (4)

• Number of subjects with Dose-Limiting Toxicities (DLT)

  Number of subjects with Dose-Limiting Toxicities (DLT)

  From Day 1 until disease progression or Day 28

• Number of subjects with Treatment-emergent Adverse Events (AEs), Serious Adverse Events (SAEs) and immune-related Adverse Events (irAEs)

  Number of subjects with Treatment-emergent AEs, SAEs and irAEs

  From Day 1 until confirmed Complete Response (CR), disease progression, initiation of a new anticancer therapy, unacceptable toxicity, or subject's consent withdrawal, or investigator's decision to discontinue treatment, which came first

• Number of subjects with Treatment-emergent Infusion related reactions (IRRs)

  Number of subjects with Treatment-emergent IRRs

  From Day 1 until confirmed CR, disease progression, initiation of a new anticancer therapy, unacceptable toxicity, or subject's consent withdrawal, or investigator's decision to discontinue treatment, which came first

• Number of subjects with the changes from baseline in laboratory values

  Number of subjects with the changes from baseline in laboratory values

  From Day 1 until confirmed CR, disease progression, initiation of a new anticancer therapy, unacceptable toxicity, or subject's consent withdrawal, or investigator's decision to discontinue treatment, which came first

Secondary Outcomes (1)

• Pharmacokinetic profile of ABL103

  From Day 1 until confirmed CR, disease progression, initiation of a new anticancer therapy, unacceptable toxicity, or subject's consent withdrawal, or investigator's decision to discontinue treatment, which came first, assessed up to 24 months

Study Arms (1)

ABL103

EXPERIMENTAL

ABL103 will be administered biweekly of every 28-day cycle in the dose-escalation. The dosing interval to be used in tumor-expansion part will be evaluated based on the emerging safety and PK data from the dose-escalation part of the study.

Drug: ABL103

Interventions

ABL103 DRUG

ABL103 will be administered biweekly of every 28-day cycle in the dose-escalation. The dosing interval to be used in tumor-expansion part will be evaluated based on the emerging safety and PK data from the dose-escalation part of the study.

ABL103

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Subject must understand and be willing to provide informed consent and be able to comply with the study procedures and restrictions.
• Subject must be ≥18 years of age on the day of signing the informed consent form (ICF)
• Subject must have a histologically confirmed locally advanced unresectable, or metastatic solid tumor.
• Subject must be relapsed or be refractory to available standard therapy or they must be intolerant of available standard therapy.
• Subject must meet Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1.
• Subject must have an estimated life expectancy of at least 12 weeks.
• Subjects must be recovered from AEs from prior therapy to Grade 1 or the baseline grade more than 14 days prior to the first administration of the study drug, except alopecia or Grade 2 toxicities that are deemed stable or irreversible (eg, peripheral neuropathy)
• Subjects must have adequate hematologic, renal, hepatic, and thyroid functions confirmed based on the screening laboratory test within 7 days prior to the first administration of ABL103.

You may not qualify if:

• Subject has received prior anticancer monoclonal antibody treatment or investigational therapy within 28 days prior to the first administration of study drug.
• Subject has received prior chemotherapy or radiation therapy within 2 weeks or targeted small molecule therapy within 5 half-lives prior to the first administration of study drug.
• Subject requires or has received systemic steroid therapy or any other immunosuppressive therapy within 14 days prior to study drug administration.
• Subject has a history of drug-induced pneumonitis (interstitial lung disease) or currently has pneumonitis.
• Subject has risk factors for bowel obstruction or bowel perforation, including, but not limited to a history of acute diverticulitis, intra-abdominal abscess, and abdominal carcinomatosis.
• Subject discontinued from prior immunomodulatory therapy due to any intolerable immune-related adverse events (irAEs) requiring systemic steroid treatment.
• Subject has received prior treatment with anti-B7-H4 antibody and/or anti-4-1BB antibody.

Sponsors & Collaborators

• ABL Bio, Inc.: lead

Study Sites (3)

Seoul National University Bundang Hospital

Seongnam, Seoul, 13620, South Korea

RECRUITING

Seoul National University Hospital

Seoul, Seoul, 03080, South Korea

NOT YET RECRUITING

Sevrance Hospital

Seoul, South Korea, 03722, South Korea

RECRUITING

Study Officials

• Sangmi Lee

  Clinical development team

  STUDY DIRECTOR

Central Study Contacts

Sangmi Le

CONTACT

+82-31-8014-7030; sangmi.lee@ablbio.com

Jungwoo Choi

CONTACT

+82-31-8018-9857; jungwoo.choi@ablbio.com

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SEQUENTIAL
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: November 2, 2023
• First Posted: November 13, 2023
• Study Start: November 7, 2023
• Primary Completion: December 30, 2025
• Study Completion (Estimated): November 15, 2027
• Last Updated: October 1, 2025

Record last verified: 2025-09

Locations

KR (3)