Disitamab Vedotin Plus Intravesical Mitomycin C in HER2-Expressing Intermediate- to High-Risk Non-Muscle-Invasive Bladder Cancer

June 9, 2026 updated by: hanxuebin, Shanxi Province Cancer Hospital

Disitamab Vedotin Plus Intravesical Mitomycin C in HER2-Expressing Medium-high Risk Non-Muscle-Invasive Bladder Cancer: A Phase II Clinical Trial

This study aims to evaluate the efficacy and safety of intravenous administration of vedacitinib combined with intravesical instillation of mitomycin in treating patients with high-risk NMIBC with HER2 expression. The goal is to provide a new treatment option for NMIBC patients, reduce the risk of tumor recurrence, decrease the proportion of radical bladder surgery, and improve the quality of life of patients.

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.

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.
30

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 2

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

  • China
    • Shanxi
      • Taiyuan, Shanxi, China, 030000
        • Recruiting
        • Shanxi Provincial Cancer Hospital
        • 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

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Voluntary participation, signing a written informed consent form;
  • The age on the date of signing the informed consent form should be no less than 18 years old, regardless of gender;
  • The subjects have completed the standard TURBT procedure before signing the informed consent form, and no obvious residual tumor lesions were found in the surgical field;
  • The postoperative pathology clearly diagnosed as non-muscle-invasive bladder cancer, and the main tissue component was more than 50% urothelial carcinoma (transitional cell carcinoma);
  • The subjects were classified into the intermediate-risk or high-risk group according to the risk classification for NMIBC;
  • Tumor tissue samples for TURBT must be provided, along with the required relevant pathological reports. Fresh surgical tissues or pathological slides can be sent for examination as well;
  • The patients were intolerant to BCG or did not accept the BCG infusion treatment plan;
  • Before treatment, HER2 detection was conducted on the resection specimens in the laboratory: The IHC results confirmed HER2 expression (defined as: IHC 1+, 2+ or 3+);
  • Clinical non-metastatic bladder cancer (N0, M0) was determined by abdominal computed tomography (CT).

Exclusion Criteria:

  • History of muscle-invasive bladder cancer or metastatic bladder cancer before treatment;History of muscle-invasive bladder cancer or metastatic bladder cancer before treatment;
  • Imaging results within 3 months before treatment indicated lymph node or other site/organ metastasis;
  • Imaging results within 3 months before treatment indicated the presence of other urinary system tumors;
  • Received other systemic anti-cancer treatments within 3 weeks before treatment, including chemotherapy, biological therapy, immunotherapy, targeted therapy, endocrine therapy, and/or investigational drug therapy;
  • Received bladder radiotherapy for urothelial carcinoma before treatment;
  • Known to have anaphylaxis or delayed allergic reaction to certain components of vedacitinib or similar drugs;
  • Within the 3 days prior to the first infusion, the following conditions had not yet been alleviated to CTCAE grade 1:Uncontrolled acute or chronic infections, such as pneumonia, biliary tract infections;Hepatitis B and Hepatitis C infections; dyspnea;Acute or chronic kidney injury; nephrotic syndrome; bladder perforation; urinary tract obstruction;
  • NYHA rating of 3 or 4;
  • Symptoms and signs related to cardiovascular diseases: including myocardial infarction, congestive heart failure, arrhythmia, etc.;
  • Known cerebrovascular accidents;
  • History of autoimmune diseases (such as inflammatory bowel disease, idiopathic thrombocytopenic purpura, systemic lupus erythematosus, hemolytic anemia, rheumatoid arthritis, etc.);
  • Known positive HIV serology, Hepatitis C infection and/or Hepatitis B (HepBsAg or core antibody positive and responding after antiviral treatment for Hepatitis B, except for these patients: these patients are allowed to participate in this study; Note: Patients with negative HepBsAg at screening)

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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

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: Disitamab Vedotin Plus Intravesical Mitomycin C
Participants will receive intravenous disitamab vedotin in combination with intravesical mitomycin C according to the protocol-defined treatment schedule.
Drug: Disitamab Vedotin
Disitamab Vedotin injection: 2.0 mg/kg, every two weeks, treatment lasts for 8 to 12 cycles
Drug: Mitomycin C (MMC)
Mitomycin bladder intravesical instillation: 40mg per dose. Instill immediately after surgery, then once a week thereafter. The induction chemotherapy instillation lasts for 8 times. Subsequently, it is instilled once a month for a total of 10 months for maintenance chemotherapy.

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
1-year disease-free survival rate(1-year DFS rate)
Time Frame: At 12 months after the first study treatment.
defined as the time from study treatment initiation to disease recurrence (confirmed by cystoscopic biopsy or imaging), disease progression (muscle invasion or distant metastasis), or death from any cause, estimated by the Kaplan-Meier method.
At 12 months after the first study treatment.

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
Disease-free survival
Time Frame: From drug combination to the first documented recurrence, disease progression, death from any cause, or last follow-up, assessed up to 12 months.
Disease-free survival is defined as the time from the date of first study treatment to the first documented recurrence, disease progression, death from any cause, or last disease assessment, whichever occurred first.
From drug combination to the first documented recurrence, disease progression, death from any cause, or last follow-up, assessed up to 12 months.
Overall Survival（OS）
Time Frame: From the date of first study treatment to the date of death from any cause or last known follow-up, whichever occurred first, assessed up to 12 months.
Overall survival is defined as the time from the date of first study treatment to death from any cause. Participants who are alive at the last follow-up will be censored at the date of last known follow-up.
From the date of first study treatment to the date of death from any cause or last known follow-up, whichever occurred first, assessed up to 12 months.
Incidence and Severity of Treatment-emergent Adverse Events
Time Frame: From the date of first study treatment until 30 days after the last dose of study treatment, assessed up to 12 months.
Treatment-emergent adverse events are defined as adverse events that occur or worsen after initiation of study treatment. Adverse events will be recorded and graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events version 5.0.
From the date of first study treatment until 30 days after the last dose of study treatment, assessed up to 12 months.

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.
Shanxi Province Cancer Hospital

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 (Actual)

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.
April 1, 2024

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.
April 1, 2027

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.
April 1, 2027

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).
June 3, 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.
June 9, 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.
June 12, 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.
June 12, 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.
June 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.
June 1, 2026

More Information

Terms related to this study

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.
  • KY2024066

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

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.

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Conditions

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