Skip to content

A First-in-Human (FIH) Study of BG-C137, an Anti-Fibroblast Growth Factor Receptor 2b (FGFR2b) Antibody Drug Conjugate, in Participants With Advanced Solid Tumors

A Phase 1a/b, Open-label, Multicenter Study to Investigate the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics, and Preliminary Antitumor Activity of BG-C137, an Antibody-Drug Conjugate Targeting FGFR2b, in Patients With Advanced Solid Tumors

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06625593
Enrollment
168
Registered
2024-10-03
Start date
2024-12-09
Completion date
2026-12-31
Last updated
2026-07-09

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

Conditions

Advanced Solid Tumor

Keywords

BG-C137, Advanced Solid Tumor, First-in-human, FGFR2b, ADC, Fibroblast growth factor receptor 2b

Brief summary

The purpose of this study is to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics, and preliminary antitumor activity of BG-C137 alone and in combination with anticancer agents in participants with advanced solid tumors. The study will be conducted in two phases: Phase 1a (Monotherapy Dose Escalation, and Safety Expansion; Combination Dose Confirmation and Safety Expansion) and Phase 1b (Dose Expansion).

Detailed description

Our company, previously known as BeiGene, is now officially BeOne Medicines. Because some of our older studies were sponsored under the name BeiGene, you may see both names used for this study on this website.

Interventions

DRUGBG-C137

Administered intravenously

Administered intravenously or orally

Sponsors

BeOne Medicines
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

1. Histologically or cytologically confirmed advanced or metastatic solid tumors. 2. Life expectancy of ≥ 3 months. 3. Prior standard systemic therapy in the advanced or metastatic setting. Dose Escalation: Participants for whom further standard treatment is not available, not tolerated or determined not appropriate based on the investigator's judgment. Combo Dose Confirmation, Combo Safety Expansion, and Dose Expansion: Participants who have received at least 1 or 2 prior lines of systemic therapy, which included a fluoropyrimidine and/or a platinum in the advanced or metastatic setting 4. Tumors with FGFR2b expression/ or FGFR2 gene amplification. Participants must provide agreement for collection of archival tissue or recently obtained fresh tumor biopsy for central evaluation of FGFR2b expression levels and other biomarker assessments. 5. ≥ 1 measurable lesion per RECIST v1.1. 6. Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1. 7. Adequate organ function as determined per protocol.

Exclusion criteria

1. Prior exposure to topoisomerase I inhibitor (TOP1i)-based antibody-drug conjugate (ADC) therapies or FGFR2b-targeted ADC therapies. 2. Active or chronic corneal disorder, history of corneal transplantation, corneal keratitis, keratoconjunctivitis, keratopathy, corneal abrasion, inflammation or ulceration, other active ocular conditions and any clinically significant corneal disease that prevents adequate monitoring of drug-induced keratopathy. 3. Spinal cord compression, or active leptomeningeal disease or uncontrolled, untreated brain metastasis. 4. Systemic antitumor therapy (including targeted therapy and immunotherapy ≤ 14 days, ≤ 28 days for immuno- oncological antibody, ≤ 14 days or 5 half-lives \[whichever is shorter\] for chemotherapy, ADCs, or investigational therapy) before first dose of study drug(s). 5. Toxicities due to prior therapy that have not recovered. 6. Any malignancy ≤ 2 years before first dose of study drug(s) except for the specific cancer under investigation in this study and any locally recurring cancer that has been treated curatively. 7. History of interstitial lung disease (ILD), noninfectious pneumonitis, oxygen saturation at rest \< 92%, or requirement for supplemental oxygen at baseline. Note: Other protocol-defined Inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Phase 1a: Number of Participants with Adverse Events (AEs) and Serious Adverse Events (SAEs)Up to approximately 2 yearsNumber of participants with AEs and SAEs as graded by the National Cancer Institute- Common Terminology Criteria for Adverse Events Version (NCI CTCAE 5.0)), including AEs that meet protocol-defined dose-limiting toxicity (DLT) criteria and AEs meeting protocol-defined adverse event of clinical interest (AECIs)
Phase 1a: Maximum Tolerated Dose (MTD) or Maximum Administered Dose (MAD) of BG-C137Up to approximately 2 yearsThe MTD or MAD is defined as the highest dose evaluated for which the estimated toxicity rate is closest to a target toxicity rate, or the highest dose administered, respectively.
Phase 1a: Recommended Dose(s) for Expansion (RDFE[s]) of BG-C137 as monotherapy and in combination with anticancer agentsUp to approximately 2 yearsRDFE(s) is determined based on relevant data, as available
Phase 1b: The recommended Phase 2 dose (RP2D) of BG-C137Up to approximately 2 yearsThe RP2D of BG-C137 monotherapy will be determined based on relevant data, as available
Phase 1b: Overall Response Rate (ORR)Up to approximately 2 yearsORR is defined as the percentage of participants with confirmed complete response (CR) or partial response (PR) by Response Evaluations Criteria in Solid Tumors Version 1.1 (RECIST v1.1)

Secondary

MeasureTime frameDescription
Phase 1a: ORRUp to approximately 2 yearsORR is defined as the percentage of participants with CR or PR, as determined by RECIST v1.1
Phase 1a and 1b: Disease Control Rate (DCR)Up to approximately 2 yearsDCR is defined as the percentage of participants with best overall response of a CR, PR, and stable disease, as assessed by RECIST v1.1
Phase 1a and 1b: Duration of Response (DOR)Up to approximately 2 yearsDOR is defined as the time from the first determination of an objective response per RECIST v1.1 until the first documentation of progression or death, whichever comes first, as assessed using RECIST v1.1
Phase 1b: Progression Free Survival (PFS)Up to approximately 2 yearsPFS is defined as the time from the date of the first dose of study drug to the date of the first documentation of progressive disease assessed using RECIST v1.1 or death, whichever occurs first
Phase 1b: Number of Participants with Adverse Events (AEs) and Serious Adverse Events (SAEs)Up to approximately 2 yearsNumber of participants with AEs and SAEs as graded by the National Cancer Institute- Common Terminology Criteria for Adverse Events Version (NCI CTCAE 5.0), and AEs meeting protocol-defined adverse event of clinical interest (AECI)s.
Phase 1a: Plasma concentrations of BG-C137 analytesUp to approximately 1 year; at the end of treatment (maximum of 2 years) and at the first safety follow-up visit (30 days after last dose)
Phase 1b: Plasma concentrations of BGB-C137 analytesUp to approximately 1 year; at the end of treatment (maximum of 2 years) and at the first safety follow-up visit (30 days after last dose)
Phase 1a: Maximum observed plasma concentration (Cmax) of BGB-C137 analytesTwice in the first 3 months
Phase 1a: Time to reach maximum observed plasma concentration (Tmax) of BGB-C137 analytesTwice in the first 3 months
Phase 1a: Minimum Observed Plasma Concentration (Ctrough) Of BGB-C137 analytesTwice in the first 3 months
Phase 1a: Area Under the Plasma Concentration-time Curve (AUC) of BGB-C137 analytesTwice in the first 3 months
Phase 1a: Terminal Half-Life (t1/2) of BGB-C137 analytesTwice in the first 3 months
Phase 1a and 1b: Incidence of Antidrug Antibodies (ADAs) to BGB-C137Up to approximately 2 years

Countries

Australia, China, South Korea, United States

Contacts

CONTACTStudy Director
clinicaltrials@beonemed.com1.877.828.5568
STUDY_DIRECTORStudy Director

BeOne Medicines

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 10, 2026