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A Phase 3, Randomized, Open-label Study to Evaluate Perioperative Enfortumab Vedotin Plus Pembrolizumab (MK-3475) Versus Neoadjuvant Gemcitabine and Cisplatin in Cisplatin-eligible Participants with Muscle-invasive Bladder Cancer (KEYNOTE-B15 / EV-304)

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-505615-21-00
Acronym
MK3475-B15
Enrollment
445
Registered
2023-12-13
Start date
2021-04-28
Completion date
Unknown
Last updated
2025-10-14

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

Conditions

Muscle Invasive Bladder Cancer

Brief summary

Event-Free Survival (EFS)

Detailed description

Pathologic Complete Response (pCR) Rate, Overall Survival (OS), Disease Free Survival (DFS), Pathologic Downstaging (pDS) Rate, Number of Participants Who Experienced An Adverse Event (AE) (Arm A only), Number of Participants Who Discontinued Study Treatment Due to An AE (Arm A only), Change from Baseline in the European Organization for Research and Treatment of Cancer (EORTC)-Quality of Life Questionnaire-Core 30 (QLQ- C30) Global Health Status/Quality of Life (Items 29 and 30) Combined Score, Change from Baseline in EORTC QLQ-C30 Physical Functioning Scale, Change from Baseline in Urinary, Bowel and Sexual Domains per Bladder Cancer Index (BCI), Change from Baseline in EuroQoL-5 Dimensions, 5-level Questionnaire (EQ- 5D-5L) Visual Analogue Score (VAS), Time to Deterioration (TTD) in the EORTC-QLQ-C30 Global Health Status/Quality of Life (Items 29 and 30), TTD in the Physical Functioning Scale per EORTC QLQ-C30, TTD in the Role Functioning Scale per EORTC QLQ-C30, TTD in the Urinary, Bowel and Sexual Domains per BCI, TTD in the EQ-5D-5L VAS

Interventions

DRUGENFORTUMAB VEDOTIN
DRUGGEMCITABINE
DRUGCISPLATIN
DRUGKEYTRUDA 25 mg/mL concentrate for solution for infusion

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Event-Free Survival (EFS)

Secondary

MeasureTime frame
Pathologic Complete Response (pCR) Rate, Overall Survival (OS), Disease Free Survival (DFS), Pathologic Downstaging (pDS) Rate, Number of Participants Who Experienced An Adverse Event (AE) (Arm A only), Number of Participants Who Discontinued Study Treatment Due to An AE (Arm A only), Change from Baseline in the European Organization for Research and Treatment of Cancer (EORTC)-Quality of Life Questionnaire-Core 30 (QLQ- C30) Global Health Status/Quality of Life (Items 29 and 30) Combined Score, Change from Baseline in EORTC QLQ-C30 Physical Functioning Scale, Change from Baseline in Urinary, Bowel and Sexual Domains per Bladder Cancer Index (BCI), Change from Baseline in EuroQoL-5 Dimensions, 5-level Questionnaire (EQ- 5D-5L) Visual Analogue Score (VAS), Time to Deterioration (TTD) in the EORTC-QLQ-C30 Global Health Status/Quality of Life (Items 29 and 30), TTD in the Physical Functioning Scale per EORTC QLQ-C30, TTD in the Role Functioning Scale per EORTC QLQ-C30, TTD in the Urinary,

Countries

Bulgaria, Croatia, Czechia, France, Germany, Greece, Hungary, Italy, Poland, Portugal, Romania, Spain

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026