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A Study of Disitamab Vedotin Alone or With Pembrolizumab in Urothelial Cancer That Expresses HER2

  • PhasePhase 2
  • StatusRecruiting
  • Planned enrollment372 people
  • Recruiting US sites138
  • SponsorSeagen, a wholly owned subsidiary of Pfizer
  • RegistryNCT04879329

Recruitment re-checked on ClinicalTrials.gov Oct 30, 2026. Public record; not medical advice.

A Study of Disitamab Vedotin Alone or With Pembrolizumab in Urothelial Cancer That Expresses HER2: a one-minute explainerNCT048793291 min

Eligibility

Who can join

The film gives the main points. The full list below is copied from the registry; the study team makes the final decision.

  • Age18 Years to no maximum
  • SexAll
  • Healthy volunteersNo

You may be able to join if

  • Cohorts A and B
  • Histopathologically-confirmed, locally-advanced, unresectable or metastatic urothelial cancer (LA/mUC), including UC originating from the renal pelvis, ureters, bladder, or urethra
  • Participants must have received only 1 or 2 lines of prior systemic treatment for LA/mUC, including 1 line of platinum-containing chemotherapy
  • At least one measurable lesion by investigator assessment based on RECIST version 1.1.
  • HER2-expression status determined by the central laboratory to be IHC 1+, 2+ or 3+, in the provided tumor sample
  • Eastern Cooperative Oncology Group (ECOG) performance status score of 0 or 1
  • Cohort C
  • Histopathologically-confirmed LA/mUC, including UC originating from the renal pelvis, ureters, bladder, or urethra
  • No prior systemic therapy for LA/mUC
  • Neoadjuvant or adjuvant therapy, including PD-(L)1 inhibitors, is acceptable, if disease recurrence/progression occurred more than 12 months after the last dose of systemic therapy
  • At least one measurable lesion by investigator assessment based on RECIST v1.1.
  • Participant is eligible to receive cisplatin- or carboplatin- containing chemotherapy per investigator evaluation
  • HER2-expression status determined by the central laboratory to be IHC 1+, 2+ or 3+, on the provided tumor tissue sample
  • ECOG performance status of 0, 1, or 2
  • Cohort D
  • Histopathologically-confirmed LA/mUC, including UC originating from the renal pelvis, ureters, bladder, or urethra
  • Based on a participant's eligibility to receive treatment with standard of care therapies in Japan, participants must have received all of the following lines of therapy for LA/mUC:
  • a. One prior line of platinum-containing chemotherapy.
  • b. Prior therapy with PD-(L)1 inhibitors as (neo)adjuvant therapy, first-line maintenance therapy or as second line treatment.
  • c. Prior enfortumab vedotin therapy.
  • At least one measurable lesion by investigator assessment based on RECIST v1.1.
  • ECOG performance status of 0 or 1
  • Cohort E
  • Histopathologically-confirmed LA/mUC, including UC originating from the renal pelvis, ureters, bladder, or urethra
  • No prior systemic therapy for LA/mUC
  • Neoadjuvant or adjuvant therapy, including PD-(L)1 inhibitors, is acceptable, if disease recurrence/progression occurred more than 12 months after the last dose of systemic therapy.
  • At least one measurable lesion by investigator assessment based on RECIST v1.1.
  • Participant is eligible to receive cisplatin- or carboplatin- containing chemotherapy per investigator evaluation
  • HER2-expression status determined by the central laboratory to be IHC 1+, 2+ or 3+, in the provided tumor sample
  • ECOG performance status of 0 or 1
  • Cohort G
  • Histopathologically-confirmed, locally-advanced, unresectable or metastatic urothelial cancer (LA/mUC), including UC originating from the renal pelvis, ureters, bladder, or urethra
  • Participants must have received only 1 or 2 lines of prior systemic treatment for LA/mUC, including 1 line of therapy containing enfortumab vedotin as monotherapy or in combination with pembrolizumab
  • The last administration of enfortumab vedotin must be 90 days from the start of study treatment. Intervening therapies are allowed between the final dose of enfortumab vedotin and the start of disitamab vedotin.
  • At least one measurable lesion by investigator assessment based on RECIST version 1.1.
  • HER2-expression status determined by the central laboratory to be IHC 1+, 2+ or 3+, in the provided tumor sample
  • Eastern Cooperative Oncology Group (ECOG) performance status score of 0 or 1

You cannot join if

  • Cohorts A and B
  • Known hypersensitivity to disitamab vedotin or any of their components
  • Prior antitumor treatment (including chemotherapy, radiotherapy, targeted therapy, immunotherapy etc.) within 2 weeks of start of study (defined as Cycle 1 Day 1 for Cohorts A and B)
  • Toxicity from a previous treatment has not returned to Grades 0 or 1 (except for Grade 2 alopecia)
  • Prior MMAE-based ADCs (eg, enfortumab vedotin) or HER2-directed therapy
  • Major surgery that has not fully recovered within 4 weeks prior to dose administration
  • Peripheral sensory or motor neuropathy ≥ Grade 2 at baseline
  • Cohort C
  • Known hypersensitivity to disitamab vedotin, pembrolizumab, or any of their components
  • Prior antitumor treatment (including chemotherapy, radiotherapy, targeted therapy, immunotherapy etc.) within 2 weeks of start of study defined as Cycle 1 Day 1 for the single-arm part of Cohort C and as randomization date for the randomized part of Cohort C)
  • Toxicity from a previous treatment has not returned to Grades 0 or 1 (except for Grade 2 alopecia)
  • Prior MMAE-based ADCs (eg, enfortumab vedotin) or HER2-directed therapy
  • Major surgery that has not fully recovered within 4 weeks prior to dose administration
  • Peripheral sensory or motor neuropathy ≥ Grade 2 at baseline
  • Has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy (in dosing exceeding 10 mg daily of prednisone equivalent) or any other form of immunosuppressive therapy within 7 days prior the first dose of study drug
  • Participants who have previously received any prior treatment with an agent directed to another stimulatory or co-inhibitory T cell receptor (including but not limited to CD137 agonists, CAR-T cell therapy, CTLA-4 inhibitors, or OX-40 agonists) are excluded.
  • Cohort D
  • Known hypersensitivity to disitamab vedotin or any of their components
  • Prior antitumor treatment (including chemotherapy, radiotherapy, targeted therapy, immunotherapy etc.) within 2 weeks of start of study (defined as Cycle 1 Day 1 for Cohort D)
  • Toxicity from a previous treatment has not returned to Grades 0 or 1 (except for Grade 2 alopecia)
  • Prior HER2-directed therapy
  • Any prior history of ≥ Grade 3 non-hematological AEs related to prior therapy
  • Major surgery that has not fully recovered within 4 weeks prior to dose administration
  • Peripheral sensory or motor neuropathy ≥ Grade 1 at baseline
  • Cohort E
  • Known hypersensitivity to disitamab vedotin, pembrolizumab, or any of their components
  • Prior antitumor treatment (including chemotherapy, radiotherapy, targeted therapy, immunotherapy etc.) within 2 weeks of start of study (defined as Cycle 1 Day 1 for Cohort E)
  • Toxicity from a previous treatment has not returned to Grades 0 or 1 (except for Grade 2 alopecia)
  • Any prior history of ≥ Grade 3 non-hematological AEs related to prior therapy
  • Prior MMAE-based ADCs (eg, enfortumab vedotin) or HER2-directed therapy
  • Major surgery that has not fully recovered within 4 weeks prior to dose administration
  • Peripheral sensory or motor neuropathy ≥ Grade 1 at baseline
  • Has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy (in dosing exceeding 10 mg daily of prednisone equivalent) or any other form of immunosuppressive therapy within 7 days prior the first dose of study drug
  • Cohort G
  • Known hypersensitivity to disitamab vedotin or any of their components
  • Prior antitumor treatment (including chemotherapy, radiotherapy, targeted therapy, immunotherapy etc.) within 2 weeks of start of study (defined as Cycle 1 Day 1 for Cohort G)
  • Toxicity from a previous treatment has not returned to Grades 0 or 1 (except for Grade 2 alopecia)
  • Prior HER2-directed therapy
  • Major surgery that has not fully recovered within 4 weeks prior to dose administration
  • Peripheral sensory or motor neuropathy ≥ Grade 2 at baseline
  • There are additional inclusion and exclusion criteria. The study center will determine if criteria for participation are met.

The treatment

How it is intended to work

This is how the treatment is meant to work. Whether it helps, and how safe it is, is what this trial is testing.

disitamab vedotin. An antibody-drug conjugate (ADC) composed of trastuzumab, a humanized immunoglobulin G1 (IgG1) monoclonal antibody directed against the tumor-associated antigen (TAA) human epidermal growth factor receptor 2 (EGFR2; HER2; ErbB2), conjugated to the microtubule-disrupting cytotoxic agent monomethyl auristatin E (MMAE), with potential antineoplastic activity. Upon administration of trastuzumab vedotin, the trastuzumab moiety targets and binds to HER2 on the surface of tumor cells. Following internalization, MMAE targets and binds to tubulin, and inhibits microtubule polymerization. This results in G2/M phase cell cycle arrest and apoptosis in HER2-expressing tumor cells. HER2, a tyrosine kinase receptor, is overexpressed by many cancer cell types. NCI Drug Dictionary

Treatments listed in the registry

  • disitamab vedotin (Drug): Given into the vein (IV; intravenous) every 2 weeks.
  • pembrolizumab (Drug): Given by IV on Day 1 of each 6-week cycle.

The study

Treatment groups

Randomized · Sequential · masking: None

Cohort A - DV monotherapy for HER2-positive tumor types (Experimental)

Disitamab vedotin monotherapy

Cohort B - DV monotherapy for HER2-low tumor types (Experimental)

Disitamab vedotin monotherapy

Cohort C - Non-randomized combination therapy (Experimental)

Disitamab vedotin + pembrolizumab

Cohort C - Randomized combination therapy (Experimental)

Disitamab vedotin + pembrolizumab

Cohort C - Randomized monotherapy (Experimental)

Disitamab vedotin monotherapy

Cohort D - DV monotherapy (Japan only) (Experimental)

Disitamab vedotin monotherapy

Cohort E - DV combination therapy (Japan only) (Experimental)

Disitamab vedotin + pembrolizumab

Cohort G - DV monotherapy (Experimental)

Disitamab vedotin

Goals

What the study measures

Main goals

  • Confirmed Objective Response Rate (cORR) per Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1 (v1.1) by blinded independent central review (BICR) (Cohorts A, B, C, and G) (Duration of treatment; approximately 2 years)
  • Incidence of adverse events (AEs) (Cohorts D and E) (Approximately 2 years)
  • Incidence of dose alterations (Cohorts D and E) (Approximately 2 years)
  • Incidence of laboratory abnormalities (Cohorts D and E) (Approximately 2 years)
  • Incidence of electrocardiogram (ECG) abnormalities (Cohorts D and E) (Approximately 2 years)
  • Change from baseline of left ventricular ejection fraction (LVEF) (Cohorts D and E) (Approximately 2 years)
  • Pharmacokinetic (PK) parameter - Area under the curve (AUC) (Cohorts D and E) (Through 30-37 days following the last dose of DV; up to approximately 2 years)
  • PK parameter - Maximum concentration (Cmax) (Cohorts D and E) (Through 30-37 days following the last dose of DV; up to approximately 2 years)
  • PK parameter - Time to maximum concentration (Tmax) (Cohorts D and E) (Through 30-37 days following the last dose of DV; up to approximately 2 years)
  • PK parameter - Trough concentration (Ctrough) (Cohorts D and E) (Through 30-37 days following the last dose of DV; up to approximately 2 years)

Other goals

  • cORR per RECIST v1.1 by investigator assessment (Cohorts A, B, C, and G)
  • Confirmed Duration of Response (DOR) per RECIST v1.1 by BICR (Cohorts A, B, C, and G)
  • Confirmed DOR per RECIST v1.1 by investigator assessment (Cohorts A, B, C, and G)
  • Progression-free survival (PFS) per RECIST v1.1 by BICR (Cohorts A, B, C, and G)
  • PFS per RECIST v1.1 by investigator assessment (Cohorts A, B, C, and G)
  • Disease control rate (DCR) per RECIST v1.1 by BICR (Cohorts A, B, C, and G)
  • DCR per RECIST v1.1 by investigator (Cohorts A, B, C, and G)
  • Overall survival (OS) (Cohorts A, B, C, and G)
  • Incidence of adverse events (AEs) (Cohorts A, B, C, and G)
  • Incidence of dose alterations (Cohorts A, B, C, and G)
  • Incidence of laboratory abnormalities (Cohorts A, B, C, and G)
  • Incidence of ECG abnormalities (Cohorts A, B, C, and G)
  • Change from baseline of LVEF (Cohorts A, B, C, and G)
  • PK parameter - AUC (Cohorts A, B, C, and G)
  • PK parameter - Cmax (Cohorts A, B, C, and G)
  • PK parameter - Tmax (Cohorts A, B, C, and G)
  • PK parameter - Ctrough (Cohorts A, B, C, and G)
  • PK parameter of pembrolizumab - Cmax (Cohort E)
  • Incidence of anti-drug antibodies (ADAs) against disitamab vedotin (All Cohorts)
  • Incidence of anti-drug antibodies (ADAs) against pembrolizumab (Cohorts C and E)
  • Incidence of neutralizing antibodies (NABs) against disitamab vedotin (All Cohorts)

Planned enrollment: 372 (estimated).

Where

Recruiting US sites

  • Banner Gateway Medical Center, Gilbert, Arizona
  • Banner MD Anderson Cancer Center, Gilbert, Arizona
  • Kaiser Permanente Anaheim Kraemer Medical Offices, Anaheim, California
  • Foothill Cardioology, Arcadia, California
  • Kaiser Permanente Baldwin Park Medical Center, Baldwin Park, California
  • Kaiser Permanente Bellflower Medical Offices, Bellflower, California
  • Beverly Hills Multi-Specialties Practice, Beverly Hills, California
  • Providence Saint Joseph Medical Center, Burbank, California
  • UCLA Burbank Cardiology, Burbank, California
  • UCLA Hematology/Oncology - Burbank, Burbank, California
  • UCLA Encino Specialty Care (Radiology), Encino, California
  • UCLA Hematology/Oncoclogy-Encino, Encino, California
  • Kaiser Permanente Fontana Medical Center, Fontana, California
  • Foothill Cardiology Glendora, Glendora, California
  • Kaiser Permanente South Bay Medical center, Harbor City, California
  • Chao Family Comprehensive Cancer Center and Ambulatory Care, Irvine, California
  • Kaiser Permanente Alton/Sand Canyon Medical Offices, Irvine, California
  • UCLA Downtown Los Angeles Primary & Specialty Care, Los Angeles, California
  • Kaiser Permanente Los Angeles Medical Offices, Los Angeles, California
  • Kaiser Permanente West Los Angeles Medical Center, Los Angeles, California
  • Ronald Reagan UCLA Medical Center, Drug Information Center, Los Angeles, California
  • UCLA Cardiovascular Center, Los Angeles, California
  • UCLA Hematology Oncology, Los Angeles, California
  • UCLA Westwood Specialty Care, Los Angeles, California
  • UCLA Santa Monica Cardiology, Los Angeles, California
  • UCLA Montecito Primary & Specialty Care, Montecito, California
  • Newport Diagnostics Center (Radiology), Newport Beach, California
  • Kaiser Permanente Ontario Medical Center, Ontario, California
  • UC Irvine Health, Orange, California
  • Kaiser Permanente Panorama City Medical Center, Medical Offices 3, Panorama City, California
  • Foothill Cardiology Pasadena, Pasadena, California
  • Southern California Heart Specialists, Pasadena, California
  • UCLA Hematology/ Oncology- Pasadena, Pasadena, California
  • UCLA Hematology Oncology - Porter Ranch, Porter Ranch, California
  • UCLA Porter Ranch Primary & Specialty Care, Porter Ranch, California
  • Kaiser Permanente Riverside Medical Center, Riverside, California
  • Southern California Permanente Medical Group (SCPMG), Riverside, California
  • Kaiser Permanente San Diego Mission Road (Regulatory and Lab Supplies), San Diego, California
  • Kaiser Permanente Zion Medical Center, San Diego, California
  • UCSF Cancer Center MZ Phlebotomy, San Francisco, California
  • UCSF Mount Zion Phlebotomy, San Francisco, California
  • UCSF Parnassus Phlebotomy, San Francisco, California
  • UCSF Investigational Drugs Pharmacy, San Francisco, California
  • University of California, San Francisco | HDFCCC - Hematopoietic Malignancies, San Francisco, California
  • University of California, San Francisco, San Francisco, California
  • Diagnostic Medical Group of Southern California (Radiology), San Gabriel, California
  • Southern California Heart Centers, San Gabriel, California
  • UCLA Hematology/Oncology - San Luis Obispo, San Luis Obispo, California
  • Sierra Vista Regional Medical Center, San Luis Obispo, California
  • Kaiser Permanente San Marcos Medical Offices, San Marcos, California
  • UCLA Hematology/Oncology - Santa Monica, Santa Monica, California
  • UCLA Simi Valley Alamo Specialty Care, Simi Valley, California
  • Twin Cities Community Hospital, Templeton, California
  • UCLA Thousand Oaks Primary & Specialty Care, Thousand Oaks, California
  • UCLA Hematology/Oncology - Torrance, Torrance, California
  • UCLA Torrance Lomita Specialty Care, Torrance, California
  • UCLA Hematology-Oncology Clinic - Santa Clarita, Valencia, California
  • UCLA Santa Clarita Primary & Specialty Care, Valencia, California
  • UCLA Hematology/Oncology - Ventura, Ventura, California
  • UCLA Ventura Cardiology, Ventura, California
  • UCLA Hematology/Oncology - Westlake, Westlake Village, California
  • Kaiser Permanente Woodland Hills Medical Center, Woodland Hills, California
  • Medstar Washington Hospital Center, Washington D.C., District of Columbia
  • Florida Cancer Specialists, Bonita Springs, Florida
  • Florida Cancer Specialists, Bradenton, Florida
  • Florida Cancer Specialists, Bradenton, Florida
  • Florida Cancer Specialists, Cape Coral, Florida
  • Florida Cancer Specialists, Fleming Island, Florida
  • Florida Cancer Specialists, Fort Myers, Florida
  • Florida Cancer Specialists, Fort Myers, Florida
  • Florida Cancer Specialists, N. Venice, Florida
  • Florida Cancer Specialists, Naples, Florida
  • Florida Cancer Specialists, Port Charlotte, Florida
  • Florida Cancer Specialists, Sarasota, Florida
  • Florida Cancer Specialists Sarasota Memorial Hospital (SAD), Sarasota, Florida
  • Florida Cancer Specialists, Tallahassee, Florida
  • Moffitt Cancer Center McKinley Hospital, Tampa, Florida
  • Moffitt Cancer Center, Tampa, Florida
  • Florida Cancer Specialists, Venice, Florida
  • Florida Cancer Specialists, Venice, Florida
  • UChicago Medicine - River East, Chicago, Illinois
  • University of Chicago Medical Center, Chicago, Illinois
  • Accellacare - Deerfield, Deerfield, Illinois
  • UChicago Medicine at Ingalls - Flossmoor, Flossmoor, Illinois
  • UChicago Medicine Ingalls Memorial, Harvey, Illinois
  • University of Chicago Comprehensive Cancer Center at Silver Cross Hospital, New Lenox, Illinois
  • The University of Chicago Medicine Center for Advanced Care Orland Park, Orland Park, Illinois
  • UChicago Medicine at Ingalls - Tinley Park, Tinley Park, Illinois
  • UMass Memorial Medical Center, Worcester, Massachusetts
  • University of Massachusetts Chan Medical School, Worcester, Massachusetts
  • The Cancer & Hematology Centers, Big Rapids, Michigan
  • Karmanos Cancer Institute, Detroit, Michigan
  • Henry Ford Cancer - Detroit (Brigitte Harris Cancer Pavilion), Detroit, Michigan
  • Karmanos Cancer Institute Weisberg Cancer Treatment Center, Farmington Hills, Michigan
  • The Cancer & Hematology Centers, Grand Rapids, Michigan
  • Cancer & Hematology Centers of Western Michigan, PC- Kit Storage, Grand Rapids, Michigan
  • The Cancer & Hematology Centers, Grand Rapids, Michigan
  • The Cancer & Hematology Centers, Holland, Michigan
  • Karmanos Cancer Institute at McLaren Greater Lansing, Lansing, Michigan
  • The Cancer & Hematology Centers, Norton Shores, Michigan
  • MSK Basking Ridge, Basking Ridge, New Jersey
  • MSK Monmouth, Middletown, New Jersey
  • MSK Bergen, Montvale, New Jersey
  • MSK Commack, Commack, New York
  • MSK Wesrchester, Harrison, New York
  • Memorial Sloan Kattering Cancer Centre- Investigational Drug Service Pharmacy, Long Island City, New York
  • Memorial Sloan Kettering Cancer Center - David H. Koch Center for Cancer Care (74th Street)., New York, New York
  • Icahn School of Medicine at Mount Sinai, New York, New York
  • Evelyn H. Lauder Breast and Imaging Centre (BAIC), New York, New York
  • Memorial Sloan Kettering Cancer Center - Main Campus, New York, New York
  • Sidney Kimmel Center for Prostate and Urological Cancers - Memorial Sloan Kettering Cancer Center, New York, New York
  • MSK nassau, Uniondale, New York
  • Carolinas Medical Center (biopsy only), Charlotte, North Carolina
  • Carolinas Medical Center Investigational Drug Services, Charlotte, North Carolina
  • Levine Cancer Institute, Charlotte, North Carolina
  • Atrium Health Mercy (biopsy only), Charlotte, North Carolina
  • Atrium Health University City (biopsy only), Charlotte, North Carolina
  • Levine Cancer Institute University, Charlotte, North Carolina
  • Levine Cancer Institute - Ballantyne, Charlotte, North Carolina
  • Atrium Health Cabarrus (biopsy only), Concord, North Carolina
  • Levine Cancer Institute Concord, Concord, North Carolina
  • Levine Cancer Institute- Gaston, Gastonia, North Carolina
  • Atrium Health Union (biopsy only), Monroe, North Carolina
  • University Hospitals Cleveland Medical Center, Cleveland, Ohio
  • Ohio State University Hospital, Columbus, Ohio
  • Ohio State University, Columbus, Ohio
  • OSU Wexner Medical Center & James Cancer Hospital, Columbus, Ohio
  • The James Cancer Hospital & Solove Research Institute at The OSU Comprehensive Cancer Center, Columbus, Ohio
  • The James Outpatient Care West Campus, Columbus, Ohio
  • OU Health Stephenson Cancer Center, Oklahoma City, Oklahoma
  • OU Medical Center, Oklahoma City, Oklahoma
  • University of Tennessee Medical Center, Knoxville, Tennessee
  • The University of Texas MD Anderson Cancer Center, Houston, Texas
  • Inova Schar Cancer Institute, Fairfax, Virginia
  • Harborview Medical Center, Seattle, Washington
  • Fred Hutchinson Cancer Center, Seattle, Washington
  • University of Washington Medical Center, Seattle, Washington
  • Froedtert Hospital/Medical College of Wisconsin, Milwaukee, Wisconsin

31 recruiting sites outside the US. Site status as of Oct 30, 2026. Check the live record before contacting a site.

Sources

Where this comes from

Registry record reviewed as fetched Oct 30, 2026, last updated by the sponsor Jul 21, 2026. Public record; not medical advice.

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