A Study of Enfortumab Vedotin for Patients With Locally Advanced or Metastatic Urothelial Bladder Cancer (EV-201)
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ClinicalTrials.gov Identifier: NCT03219333 |
Recruitment Status :
Active, not recruiting
First Posted : July 17, 2017
Last Update Posted : March 26, 2021
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This is a study that will test how an experimental drug (enfortumab vedotin) affects patients with cancer of the urinary system (urothelial cancer). This type of cancer includes cancer of the bladder, renal pelvis, ureter or urethra that has spread to nearby tissues or to other areas of the body.
This clinical trial will enroll patients who were previously treated with a kind of anticancer drug called an immune checkpoint inhibitor (CPI). Some CPIs have been approved for the treatment of urothelial cancer.
This study will test if the cancer shrinks with treatment. This study will also look at the side effects of the drug. A side effect is a response to a drug that is not part of the treatment effect.
Patients who sign up for this trial must also fall into one of these categories:
- Patients have already received treatment with platinum-containing chemotherapy
- Patients have never received platinum-containing treatment and are not eligible for treatment with cisplatin.
Condition or disease | Intervention/treatment | Phase |
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Carcinoma, Transitional Cell Urinary Bladder Neoplasms Urologic Neoplasms Renal Pelvis Neoplasms Urothelial Cancer Ureteral Neoplasms Urethral Neoplasms | Drug: Enfortumab vedotin | Phase 2 |
Expanded Access : An investigational treatment associated with this study has been approved for sale to the public. More info ...
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 219 participants |
Allocation: | N/A |
Intervention Model: | Single Group Assignment |
Intervention Model Description: | single-arm, open-label, multi-cohort, multicenter study |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | A Single-arm, Open-label, Multicenter Study of Enfortumab Vedotin (ASG-22CE) for Treatment of Patients With Locally Advanced or Metastatic Urothelial Cancer Who Previously Received Immune Checkpoint Inhibitor (CPI) Therapy |
Actual Study Start Date : | October 8, 2017 |
Actual Primary Completion Date : | October 27, 2020 |
Estimated Study Completion Date : | May 31, 2025 |

Arm | Intervention/treatment |
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Experimental: Enfortumab vedotin
Enfortumab vedotin on days 1, 8 and 15 every 28 days
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Drug: Enfortumab vedotin
Intravenous (IV) infusion on days 1, 8 and 15 every 28 days
Other Names:
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- Objective response rate (ORR) by an independent review facility (IRF) [ Time Frame: Up to 3 years ]The proportion of patients with confirmed complete response (CR) or partial response (PR) according to Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST 1.1)
- Duration of response (DOR) by an IRF [ Time Frame: Up to 7.5 years ]The time from first documentation of objective response (CR or PR that is subsequently confirmed) to the first documentation of progressive disease (PD) or to death due to any cause, whichever comes first
- Disease control rate at 16 weeks (DCR16) by an IRF [ Time Frame: 16 weeks ]Proportion of patients with CR, PR, or stable disease (SD) at Week 16 visit
- Progression free survival (PFS) by an IRF [ Time Frame: Up to 7.5 years ]The time from start of study treatment to first documentation of objective tumor progression (PD per RECIST 1.1), or to death due to any cause, whichever comes first
- ORR by investigator assessment [ Time Frame: Up to 7.5 years ]Confirmed CR and PR per RECIST 1.1
- DOR by investigator assessment [ Time Frame: Up to 7.5 years ]The time from first documentation of objective response (CR or PR that is subsequently confirmed) to the first documentation of PD or to death due to any cause, whichever comes first
- DCR16 by investigator assessment [ Time Frame: 16 weeks ]Proportion of patients with CR, PR, or SD at Week 16 visit
- Progression free survival (PFS) by investigator assessment [ Time Frame: Up to 7.5 years ]The time from start of study treatment to first documentation of objective tumor progression (PD per RECIST 1.1), or to death due to any cause, whichever comes first
- Overall survival (OS) [ Time Frame: Up to 7.5 years ]The time from start of study treatment to date of death due to any cause
- Incidence of adverse events (AEs) [ Time Frame: Through 1 month following last dose, or end-of-treatment visit whichever is later, up to 7.5 years ]Descriptive statistics will be used to summarize results
- Incidence of laboratory abnormalities [ Time Frame: Through 1 month following last dose, or end-of-treatment visit whichever is later, up to 7.5 years ]Descriptive statistics will be used to summarize results
- Pharmacokinetics (PK) parameter for enfortumab vedotin: Maximum concentration (Cmax) [ Time Frame: Through 1 month following last dose, or end-of-treatment visit whichever is later, up to 7.5 years ]Cmax will be derived from the PK blood samples collected
- PK parameter for enfortumab vedotin: Trough concentration (Ctrough) [ Time Frame: Through 1 month following last dose, or end-of-treatment visit whichever is later, up to 7.5 years ]Ctrough will be derived from the PK blood samples collected
- PK parameter for monomethyl auristatin E (MMAE): Cmax [ Time Frame: Through 1 month following last dose, or end-of-treatment visit whichever is later, up to 7.5 years ]Cmax will be derived from the PK blood samples collected
- PK parameter for MMAE: Ctrough [ Time Frame: Through 1 month following last dose, or end-of-treatment visit whichever is later, up to 7.5 years ]Ctrough will be derived from the PK blood samples collected
- PK parameter for Total Antibody (TAb): Cmax [ Time Frame: Through 1 month following last dose, or end-of-treatment visit whichever is later, up to 7.5 years ]Cmax will be derived from the PK blood samples collected
- PK parameter for Total Antibody (TAb): Ctrough [ Time Frame: Through 1 month following last dose, or end-of-treatment visit whichever is later, up to 7.5 years ]Ctrough will be derived from the PK blood samples collected
- Incidence of antitherapeutic antibodies (ATA) to enfortumab vedotin [ Time Frame: Through 1 month following last dose, or end-of-treatment visit whichever is later, up to 7.5 years ]Blood samples for ATA analysis will be collected

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Histologically documented urothelial carcinoma (squamous differentiation or mixed cell types allowed).
- Metastatic disease or locally advanced disease that is not resectable.
- Must have received prior treatment with a CPI in the locally advanced or metastatic urothelial cancer setting. A CPI is defined as a programmed cell death protein 1 (PD-1) or programmed death-ligand 1 (PD-L1) inhibitor. Patients who received CPI therapy in the neoadjuvant/adjuvant setting and had recurrent or progressive disease either during therapy or within 3 months of therapy completion are eligible.
- Must either have prior treatment with platinum-containing chemotherapy (Cohort 1) or be platinum-naïve and ineligible for treatment with cisplatin at time of enrollment (Cohort 2).
- Must have had progression or recurrence of urothelial cancer during or following receipt of most recent therapy.
- Tumor tissue samples must be available for submission to the sponsor prior to study treatment.
- Must have measurable disease according to Response Evaluation Criteria in Solid Tumors (RECIST) (Version 1.1).
- An Eastern Cooperative Oncology Group (ECOG) Performance Status score of ≤1 for Cohort 1 or ≤2 for Cohort 2.
- Anticipated life expectancy of ≥3 months as assessed by the investigator.
Exclusion Criteria:
- Ongoing sensory or motor neuropathy Grade ≥2.
- Active central nervous system (CNS) metastases.
- Immunotherapy related myocarditis, colitis, uveitis, or pneumonitis.
- Prior enrollment in an enfortumab vedotin study or prior treatment with other monomethyl auristatin E (MMAE)-based antibody-drug conjugates (ADCs).
- Uncontrolled tumor-related pain or impending spinal cord compression.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03219333

Study Director: | Janet Trowbridge, MD, PhD | Seagen Inc. |
Responsible Party: | Astellas Pharma Global Development, Inc. |
ClinicalTrials.gov Identifier: | NCT03219333 |
Other Study ID Numbers: |
SGN22E-001 |
First Posted: | July 17, 2017 Key Record Dates |
Last Update Posted: | March 26, 2021 |
Last Verified: | March 2021 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Undecided |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Enfortumab vedotin Metastatic Urothelial Cancer ASG-22CE Locally Advanced Urothelial Cancer Antibody-Drug Conjugate Nectin-4 |
Platinum-naïve Cisplatin-ineligible Antineoplastic Agents Drug Therapy ASG-22ME |
Neoplasms Urinary Bladder Neoplasms Urologic Neoplasms Carcinoma, Transitional Cell Ureteral Neoplasms Urethral Neoplasms Pelvic Neoplasms Urogenital Neoplasms |
Neoplasms by Site Urinary Bladder Diseases Urologic Diseases Carcinoma Neoplasms, Glandular and Epithelial Neoplasms by Histologic Type Ureteral Diseases Urethral Diseases |