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A First-in-Human Phase I Study of ESG206 in Subjects With B-cell Lymphoid Malignancies

A First-in-Human Phase I, Open Label, Multiple Dose, Dose Escalation Study to Investigate the Safety, Tolerability, Pharmacokinetics and Antitumor Activities of Anti-BAFFR mAb, ESG206 in Subjects With B-cell Lymphoid Malignancies

Status
Withdrawn
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05263739
Enrollment
0
Registered
2022-03-03
Start date
2025-12-31
Completion date
2026-12-31
Last updated
2025-09-12

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

Conditions

B-cell Lymphoid Malignancies

Brief summary

This is a first-in-human phase I, multicenter, open label, sequential-cohort, dose escalation study of ESG206. The purpose is to evaluate the clinical safety, tolerability, PK, and preliminary efficacy and to establish the MTD, if any, and RP2D(s) of ESG206 in adult subjects with B lymphoid malignancies.

Detailed description

This is a first-in-human phase I, multicenter, open label, sequential-cohort, dose escalation study of ESG206. The study will follow a modified 3+3 dose escalation scheme. Dose escalation will continue until identification of MTD or the predicted efficacy dose in the event that a MTD is not identified due to paucity of DLTs. Toxicity including dose-limiting toxicity (DLT) observed in Cycle 1 of the first 28 days will be used to determine escalation to the next dose level as described below. Five dose levels are planned. Dose choosing will be determined by the SMC and the sponsor based on the pharmacokinetics, tolerability and preliminary antitumor activities, as well as other available data. Subjects will be monitored for safety, tolerability, and efficacy throughout the study.

Interventions

DRUGESG206

Administered via intravenous (IV) infusion

Sponsors

Escugen (Australia) Biotechnology Pty Ltd
CollaboratorUNKNOWN
Shanghai Escugen Biotechnology Co., Ltd
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

* Willing and able to provide written informed consent for the trial. * Male or female and at least 18 years of age. * Subjects must have a histologically confirmed (or documented), incurable B-cell hematologic malignancy that had progressed despite standard of care therapy and for which there was no alternative therapy of proven benefit or no effective standard therapy is available or tolerable. * Measurable or evaluable Disease. * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. * Subject must have adequate organ function.

Exclusion criteria

* Has had prior chemotherapy, targeted therapy, immunotherapy or any other agents used as systemic treatment for cancer, within 14 days before first dosing. * Had major surgery within 4 weeks before first dosing. * Had undergone an autologous stem cell transplant within 100 days before first dosing. * Evidence of severe or uncontrolled systemic diseases (e.g., unstable or uncompensated respiratory, hepatic, or renal disease). * Known immediate or delayed hypersensitivity reaction or idiosyncrasy to drugs chemically related to the investigational product or excipients. * Pregnant or breastfeeding women. * Unwillingness or inability to follow the procedures outlined in the protocol.

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants Experiencing Any Treatment Emergent Adverse EventsFirst dose date up to last dose plus 30 daysTreatment-emergent adverse events (TEAEs) were defined as: Any AE that happens after treatment initiation,.or AE that was present at time of treatment initiation but worsened after treatment initiation, or AE that was present and resolved prior to treatment and reappeared after treatment initiation after the start of study drug through 30 days after the last dose of study drug. The severity was graded based on the National Cancer Institute's Common Terminology Criteria for Adverse Events Version 5.0.

Secondary

MeasureTime frameDescription
AUC0-infUp to 20 monthsArea under the serum concentration time curve from time 0 extrapolated to infinity
TmaxUp to 20 monthsTime to maximum plasma concentration
T1/2Up to 20 monthsHalf-life
CmaxUp to 20 monthsMaximum observed plasma concentration
Progression-free Survival (PFS)Up to 20 monthsDefined as the interval from the start of study therapy to the earlier of the first documentation of disease progression or death from any cause
ADAUp to 20 monthsIncidence of anti-drug antibodies
Overall Response (OR)Up to 20 monthsDefined as complete response (CR) + partial response (PR)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 6, 2026