BL-M07D1 (Trastuzumab Brengitecan T-bren) vs Standard of Care Platinum-based Chemotherapy (PBC) for HER2-expressing Metastatic Urothelial Cancer After Progression on Anti-PD-(L)1-based Therapy

November 9, 2026 updated by: SystImmune Inc.

A Phase 3 Open-Label, Randomized Controlled Trial of T-bren (BL M07D1) vs. Platinum-based Chemotherapy in Patients With HER2 Expressing Metastatic Urothelial Cancer With Disease Progression on or After Anti-PD-(L)1-based Therapy

The objective of the study is to evaluate the efficacy and safety of T-bren in participants with HER2 expressing metastatic UC with progression on or after anti-PD-(L)1-based therapy.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This study is a Global Phase 3, randomized, open-label, multicenter study of T-bren for the treatment of metastatic UC. This study will assess the efficacy and safety of T-bren versus PBC in adult participants with HER2-expressing UC after progression on anti-PD-(L)1-based therapy.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
520

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Georgia
      • Macon, Georgia, United States, 31210
        • Recruiting
        • Central Georgia Cancer Center
        • Principal Investigator:
          • Bradley Sumrall, MD
        • Contact:
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Histologically or cytologically documented metastatic or surgically unresectable transitional cell carcinoma (TCC) of the urothelium involving the renal pelvis, ureter, bladder, or urethra. Minor histologic variants (ie, <50% overall) are acceptable, provided that TCC is the dominant histology.
  • Disease progression or recurrence during or following anti-PD-(L)1-based therapy.
  • Fresh biopsy or archival tumor samples.
  • Documented HER2 expression by central laboratory testing.
  • Eligible to receive carboplatin or cisplatin in combination with gemcitabine.
  • At least 1 measurable lesion based on RECIST v1.1.
  • An Eastern Cooperative Oncology Group performance status (ECOG PS) of 0 to 1.
  • Adequate organ function.
  • Adequate coagulation parameters.

Exclusion Criteria:

  • Prior topoisomerase inhibitor-based ADC therapy.
  • Primary tumors in the central nervous system (CNS), active or untreated CNS metastases, or carcinomatous meningitis.
  • Bladder cancers with small cell histology.
  • Other prior or concurrent malignancies except for certain localized cancers or low-grade prostate cancer (if approved by sponsor), or other malignancy treated with curative intent with a disease-free interval of at least 3 years.
  • Prior history of clinically significant bleeding, or perforation of the gastrointestinal tract within 6 months of randomization.
  • Active autoimmune diseases and inflammatory diseases.
  • History of noninfectious interstitial lung disease (ILD)/pneumonitis that required treatment with steroids, have current ILD/pneumonitis, or where suspected ILD/pneumonitis cannot be ruled out by imaging at Screening.
  • Advanced/clinically significant lung disease (eg, poorly controlled chronic obstructive pulmonary disease or asthma, restrictive lung disease, or pulmonary hypertension) within 6 months prior to randomization.
  • Known human immunodeficiency virus infection.
  • Active hepatitis B virus (HBV) infection.
  • Active hepatitis C virus (HCV) infection.
  • Active or latent tuberculosis.
  • Other protocol-specified inclusion/ exclusion criteria apply

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Arm A, T-bren Dose Level 1

T-bren administered intravenously
Drug: T-Bren, Dose level 1

T-bren: Administered intravenously on day 1 of each 21-day cycle

Other Names:
  • T-Bren
  • BL-M07D1
  • Trastuzumab Brengitecan
Experimental: Arm B, T-bren Dose Level 2

T-bren administered intravenously
Drug: T-bren, Dose level 2

TBren administered intravenously on day 1 of each 21-day cycle

Other Names:
  • T-Bren
  • BL-M07D1
  • Trastuzumab Brengitecan
Active Comparator: Arm C, Control Arm, Platinum-based Chemotherapy (PBC)
  1. Gemcitabine Administered intravenously
  2. Cisplatin or Carboplatin Administered intravenously
Drug: Gemcitabine + Platinum Based Chemotherapy (Cisplatin or Carboplatin)

Gemcitabine administered intravenously on Day 1 and Day 8 of each 21-day cycle and Cisplatin or Carboplatin administered intravenously on Day 1 of each 21-day cycle

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Progression-Free Survival (PFS)
Time Frame: Approximately 5 years

Progression-Free Survival (PFS) by Blinded Independent Central Review (BICR) per RECIST v1.1 in the primary population
Approximately 5 years

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Overall Survival (OS)
Time Frame: Approximately 5 years

Overall Survival (OS) in primary population
Approximately 5 years
Progression-Free Survival (PFS) in the ITT population
Time Frame: Approximately 5 years

Progression-Free Survival (PFS) by BICR per RECIST v1.1 in the ITT (Intent-to-Treat) Population
Approximately 5 years
Overall Survival (OS) in the ITT population
Time Frame: Approximately 5 years
Approximately 5 years
Progression-Free Survival (PFS) by Investigator Assessment
Time Frame: Approximately 5 years

Progression-Free Survival (PFS) by Investigator Assessment per RECIST v1.1
Approximately 5 years
Objective Response Rate (ORR) per RECIST v1.1
Time Frame: Approximately 5 years
Approximately 5 years
Disease Control Rate (DCR) per RECIST v1.1
Time Frame: Approximately 5 years
Approximately 5 years
Duration of Response (DOR) per RECIST v1.1
Time Frame: Approximately 5 years
Approximately 5 years
Time to Response (TTR) per RECIST v1.1
Time Frame: Approximately 5 years
Approximately 5 years
Adverse Events (AEs) and Serious Adverse Events (SAEs)
Time Frame: Approximately 5 years
Approximately 5 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
SystImmune Inc.

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Jimmy Liu Zhao, MD, PhD, SystImmune Inc.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 1, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2028

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2029

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 6, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 6, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 13, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 10, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 9, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • BL-M07D1-UC-301

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings