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HER2 and LA/mUC: A Multi-country Chart Review Cohort Study

A Retrospective Chart Review of Real-world Treatment Outcomes in Patients With Locally Advanced Unresectable or Metastatic Urothelial Cancer Based on HER2 Expression

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05902494
Enrollment
389
Registered
2023-06-15
Start date
2023-06-29
Completion date
2025-06-18
Last updated
2025-07-20

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

Conditions

Urothelial Carcinoma

Keywords

Urothelial Cancer, Bladder Cancer, HER2 Mutations, HER2 Overexpression, HER2 Amplification, Seattle Genetics

Brief summary

This study is being done to learn about urothelial cancers that make HER2 and how that affects treatment choices for participants with urothelial cancer. During this study, the medical and health records of participants will be reviewed to learn more about their health. Participants will have urothelial cancer that has grown in the body near where it started (locally advanced) and cannot be removed (unresectable) or has spread through the body (metastatic).

Interventions

None listed

Sponsors

Seagen, a wholly owned subsidiary of Pfizer
Lead SponsorINDUSTRY

Study design

Observational model
OTHER
Time perspective
RETROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Histologically confirmed UC originating from the renal pelvis, ureters, bladder, or urethra. Mixed-cell type tumors are eligible as long as urothelial cell carcinoma is the predominant cell type. * Locally advanced unresectable or metastatic stage disease * Formalin fixed paraffin embedded (FFPE) tumor tissue blocks (or freshly sectioned slides, see laboratory manual for details) available for HER2 testing. * At least 1 prior line of systemic therapy for locally advanced unresectable or metastatic urothelial carcinoma (LA/mUC), including 1 line of platinum-containing chemotherapy. * Initiation of anticancer therapy for UC after prior progression on platinum-based therapy with or without maintenance avelumab between 01 January 2019 and 12 months before the end of data collection * Radiographically documented and measurable disease progression immediately before index date

Exclusion criteria

* Any concurrent malignant neoplasm requiring systemic therapy during the study window * Enrollment in a therapeutic clinical trial and received non-standard of care treatment during index line of therapy

Design outcomes

Primary

MeasureTime frameDescription
Real-world Objective Response Rate (rwORR) per modified response evaluation criteria in solid tumors version 1.1 (RECIST v1.1)Up to 5 yearsThe proportion of participants who have a best overall response (BOR) based on complete response (CR) or partial response (PR). The BOR for each participant is the best response (radiographically documented and measurable disease or physician-assessed response) achieved after the start date of the lines of treatment (LOT) prior to the initiation of any subsequent LOT.

Secondary

MeasureTime frameDescription
Percentages of HER2+ (IHC3+, IHC2+/ISH+), HER2-low (IHC1+, IHC2+/ISH-), HER2-expressing (IHC1+, IHC2+, and IHC3+), and HER2-zero (IHC0) participantsUp to 5 years
Characteristics of LA/mUC participantsUp to 5 years
Real-world Overall Survival (rwOS)Up to 5 yearsTime from the index date to date of death from any cause.
Characteristics of treatment patterns in LA/mUC participantsUp to 5 yearsAgent, reason for change of LOT, surgery, radiotherapy, number of LOT, treatments in each LOT, mean number of LOT, median time to discontinuation of each LOT
Percentages of IHC0, 1+, 2+, and 3+ participantsUp to 5 years
Real-world Time on Treatment (rwTOT)Up to 5 yearsTime from the start date of the LOT to the end date of the same LOT for any reason.
Real-world Time to Next Treatment (rwTTNT)Up to 5 yearsThe time from the start date of each LOT to the initiation of the next LOT for any reason.
Real-world Progression Free Survival (rwPFS)Up to 5 yearsTime from the index date to the first recorded disease progression (radiographically documented and measurable disease or physician assessed response) or death from any cause, before the start of next LOT whichever occurs first.
Real-world Duration of Response (rwDOR)Up to 5 yearsThe duration of time from the first documented CR or PR in the LOT to the first recorded disease progression (radiographically documented and measurable disease or physician-assessed response) or death from any cause before the start of the next LOT, whichever occurs first.
rwORR for each subsequent LOT following the index LOTUp to 5 yearsThe proportion of participants who had a real-world BOR based on CR or PR. The BOR for each participant is the best response (radiographically documented and measurable disease or physician-assessed response) achieved after the start date of the LOT prior to the initiation of any subsequent LOT.

Countries

Austria, France, Germany, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 29, 2026