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Urothelial CancerNCT05366725

A Study to Learn About the Study Medicine (Called Avelumab) in People With Advanced Urothelial Cancer After Chemotherapy

An observational study of Urothelial Cancer, run by Merck Healthcare KGaA, Darmstadt, Germany, an affiliate of Merck KGaA, Darmstadt, Germany at 10 sites in United Kingdom.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this clinical trial is to learn about the safety and effects of the study medicine (called Avelumab) in people with advanced urothelial (bladder) cancer (UC) whose disease hasn't worsened after receiving chemotherapy. This study is seeking participants who: 1. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Urothelial Cancer
What is being tested?
Avelumab
How many people
106 participants
Where
10 sitesUnited Kingdom
Study dates
29 Jun 2022to 27 Jun 2024
Phase
Observational
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: Adult patients with a diagnosis of locally advanced or metastatic UC, either de novo or relapsed who are progression-free following completion of platinum-based chemotherapy.

Who may be able to join

  • Patients with a diagnosis of locally advanced or metastatic UC, either de novo or relapsed
  • Patients received 1L platinum-based chemotherapy and had stable disease, partial response, or complete response to this treatment
  • Patients received avelumab as indicated as a monotherapy for the first-line maintenance treatment of adult patients with locally advanced or metastatic UC who are progression-free following platinum-based chemotherapy
  • Patients aged ≥18 years on the date that they commenced avelumab -

Who cannot join

  • Patients whose hospital records are not available for review
  • Patients who are receiving an investigational medicinal product as part of a clinical trial at the time of maintenance therapy with avelumab

Trial locations and contacts

10 sites in 1 country.

10 sites in 1 country

United Kingdom10 sites
  • University Hospitals Bristol

    Bristol, BS1 3NU

  • Beatson West of Scotland Cancer Centre

    Glasgow, G12 0YN

  • Royal Surrey County Hospital

    Guildford, GU2 7XX

  • University College London Hospital

    London, NW1 2PG

  • Guy's and St Thomas' Hospital

    London, SE1 9RT

  • The Christie NHS Foundation Trust

    Manchester, M20 4BX

  • Clatterbridge Hospital

    Metropolitan Borough of Wirral, CH63 4JY

  • Churchill Hospital

    Oxford, OX3 7LE

  • Royal Preston Hospital

    Preston, PR2 9HT

  • Lister Hospital

    Stevenage, SG1 4AB

Other trials in United Kingdom

About this study

Official title: A MULTI-CENTRE NON-INTERVENTIONAL STUDY TO DESCRIBE THE EARLY CLINICAL EXPERIENCE OF AVELUMAB USED AS MONOTHERAPY FOR THE FIRST-LINE MAINTENANCE TREATMENT OF ADULT PATIENTS WITH LOCALLY ADVANCED OR METASTATIC UROTHELIAL CARCINOMA WHO ARE PROGRESSION-FREE FOLLOWING PLATINUM-BASED CHEMOTHERAPY

The purpose of this clinical trial is to learn about the safety and effects of the study medicine (called Avelumab) in people with advanced urothelial (bladder) cancer (UC) whose disease hasn't worsened after receiving chemotherapy.

This study is seeking participants who:

Read more
  1. Have UC that cannot be operated on or has spread to other parts of the body
  2. Received 1st line platinum-based chemotherapy and had stable disease, partial response, or complete response to this treatment
  3. Received Avelumab as indicated as the only therapy for the first-line maintenance who are progression-free following platinum-based chemotherapy
  4. Are 18 years or older on the date that they start taking Avelumab

All participants in this study will receive Avelumab, a standard treatment for urothelial carcinoma. Participants will take part in this study for about 4 years. During this time, they will take Avelumab as instructed in the real-world setting. We will study the experiences of people receiving the study medicine. This will help us decide if the study medicine is safe and effective.

Read the detailed description

The primary objective of this study is to estimate real-world overall survival (rwOS) in a real-world cohort of patients treated with avelumab monotherapy for the first-line maintenance treatment of adult patients with locally advanced or metastatic UC who are progression-free following platinum-based chemotherapy.

The secondary objectives are:

  1. To describe the clinical and demographic characteristics of the study population
  2. To estimate real-world progression-free survival (rwPFS)
  3. To describe treatment characteristics of 1L anti-cancer therapies received prior to the initiation of avelumab as 1Lmaintenance therapy
  4. To describe treatment patterns after initiation of avelumab as 1L maintenance therapy
  5. To describe the adverse events (AEs) explicitly attributed to avelumab in a real-world population
  6. To describe real-world all-cause associated healthcare resource burden associated with avelumab therapy
Being tested
Avelumab

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • AvelumabDrug

    As provided in real world practice

Study groups in NCT05366725
Study groupRoleWhat they receive
Adult patients with locally advanced or metastatic urothelial cancerNot described
Receives: Drug: Avelumab

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Real-World Overall Survival

    Real-World Overall Survival is the time from participant eCRF index date (avelumab initiation between September 2020 to November 2021) to date of death by any cause, or date of censoring, inclusive of start and end date. Analysis was performed using Kaplan-Meier method.

    Measured: From participant eCRF index date (avelumab initiation between September 2020 to November 2021) to date of death by any cause, or date of censoring (whichever is first) (up to 24-months from initiation of avelumab treatment)

Secondary outcomes (28)
  1. Clinical Characteristics: Time From First Diagnosis to Locally Advanced or Metastatic Diagnosis

    Time from First Diagnosis to Locally Advanced or Metastatic Diagnosis is the time between date of first diagnosis and date of locally advanced or metastatic diagnosis. Due to retrospective nature of study, the diagnosis data was collected retrospectively before participants were enrolled into the study, hence timeframe exceeds the study duration in this outcome measure.

    Measured: Time between date of first diagnosis and date of locally advanced or metastatic diagnosis measured at baseline (date of locally advanced or metastatic diagnosis) (Up to 621.4 weeks)

  2. Clinical Characteristics: Participant's Age at Locally Advanced or Metastatic Diagnosis

    Age (in years) at date of locally advanced or metastatic cancer diagnosis. Calculated as the number of years between date of birth and date of locally advanced or metastatic diagnosis, rounded down to the nearest whole year of age was reported. Due to retrospective nature of study, the diagnosis data was collected retrospectively before participants were enrolled into the study, hence timeframe exceeds the study duration in this outcome measure.

    Measured: Time between date of first diagnosis and date of locally advanced or metastatic diagnosis measured at baseline (date of locally advanced or metastatic diagnosis) (Up to 621.4 weeks)

  3. Clinical Characteristics: Participant's Stage of UC at Locally Advanced or Metastatic Diagnosis

    The Stage of UC of participants at Locally Advanced or Metastatic Diagnosis was reported as recorded in eCRF Q13: Stage IIIA, Stage IIIB, Stage IVA or Stage IVB. Urothelial cancer stages III to IVB indicate progressive spread of the disease. In Stage IIIA, the cancer has invaded nearby tissues like the prostate, uterus, or vagina, or has reached one lymph node in the pelvis. Stage IIIB involves spread to two or more lymph nodes in that region. In Stage IVA, the cancer extends further to nearby organs such as the pelvic or abdominal wall, or to distant lymph nodes. Stage IVB represents the most advanced stage, where the cancer has metastasized to distant organs like the lungs, liver, or bones. Due to retrospective nature of study, the diagnosis data was collected retrospectively before participants were enrolled into the study, hence timeframe exceeds the study duration in this outcome measure.

    Measured: Time between date of first diagnosis and date of locally advanced or metastatic diagnosis measured at baseline (date of locally advanced or metastatic diagnosis) (Up to 621.4 weeks)

  4. Clinical Characteristics: Participant's Histology at Locally Advanced or Metastatic Diagnosis

    Participant's Histology at Locally Advanced or Metastatic Diagnosis was reported. Number of participants with histology of Pure urothelial cancer, mixed urothelial with component of another pathology, or other were reported. Due to retrospective nature of study, the diagnosis data was collected retrospectively before participants were enrolled into the study, hence timeframe exceeds the study duration in this outcome measure.

    Measured: Time between date of first diagnosis and date of locally advanced or metastatic diagnosis measured at baseline (date of locally advanced or metastatic diagnosis) (Up to 621.4 weeks)

  5. Clinical Characteristics: Number of Participants With De Novo Disease or Newly Relapsed at Locally Advanced or Metastatic Diagnosis

    Number of participants with de novo disease or newly relapsed at locally advanced or metastatic diagnosis was reported. Due to retrospective nature of study, the diagnosis data was collected retrospectively before participants were enrolled into the study, hence timeframe exceeds the study duration in this outcome measure.

    Measured: Time between date of first diagnosis and date of locally advanced or metastatic diagnosis measured at baseline (date of locally advanced or metastatic diagnosis) (Up to 621.4 weeks)

  6. Clinical Characteristics: Participant's Programmed Death-Ligand 1 (PD-L1) Tumour Assessment Immune Cell (IC) Test Result at Locally Advanced or Metastatic Diagnosis

    Participants PD-L1 tumour assessment immune cell (IC) test result at Locally Advanced or Metastatic Diagnosis was reported. Due to retrospective nature of study, the diagnosis data was collected retrospectively before participants were enrolled into the study, hence timeframe exceeds the study duration in this outcome measure.

    Measured: Time between date of first diagnosis and date of locally advanced or metastatic diagnosis measured at baseline (date of locally advanced or metastatic diagnosis) (Up to 621.4 weeks)

  7. Clinical Characteristics: Number of Participants With Eastern Cooperative Oncology Group (ECOG) Performance Status Score of 0, 1 and 2, 3 or 4

    ECOG-PS assessed participant's performance status on a 5 point scale: 0= fully active/able to carry on all pre-disease activities without restriction; 1= restricted in physically strenuous activity, ambulatory/able to carry out light or sedentary work; 2= ambulatory (>50% of waking hours), capable of all self-care, unable to carry out any work activities; 3= capable of only limited self-care, confined to bed/chair >50% of waking hours; 4= completely disabled, cannot carry on any self-care, totally confined to bed/chair. Due to retrospective nature of study, the diagnosis data was collected retrospectively before participants were enrolled into the study, hence timeframe exceeds the study duration in this outcome measure.

    Measured: Time between date of first diagnosis and date of locally advanced or metastatic diagnosis measured at baseline (date of locally advanced or metastatic diagnosis) (Up to 621.4 weeks)

  8. Clinical Characteristics: Participants Site of Metastases

    Participants site of metastases: Lymph nodes, Bone, Lung, Liver, Peritoneum or other was reported. Participants could have one or more sites of metastases. Due to retrospective nature of study, the diagnosis data was collected retrospectively before participants were enrolled into the study, hence timeframe exceeds the study duration in this outcome measure.

    Measured: Time between date of first diagnosis and date of locally advanced or metastatic diagnosis measured at baseline (date of locally advanced or metastatic diagnosis) (Up to 621.4 weeks)

  9. Clinical Characteristics: Number of Participants With Prior Radical Treatment of Primary UC at Locally Advanced or Metastatic Diagnosis

    The number of participants with prior radical treatment of primary UC at Locally Advanced or Metastatic Diagnosis were reported. Due to retrospective nature of study, the diagnosis data was collected retrospectively before participants were enrolled into the study, hence timeframe exceeds the study duration in this outcome measure.

    Measured: Time between date of first diagnosis and date of locally advanced or metastatic diagnosis measured at baseline (date of locally advanced or metastatic diagnosis) (Up to 621.4 weeks)

  10. Clinical Characteristics: Number of Participants With Prior Adjuvant or Neoadjuvant System Therapy at Locally Advanced or Metastatic Diagnosis

    The number of participants with prior adjuvant or neoadjuvant system therapy at Locally Advanced or Metastatic Diagnosis were reported. Due to retrospective nature of study, the diagnosis data was collected retrospectively before participants were enrolled into the study, hence timeframe exceeds the study duration in this outcome measure.

    Measured: Time between date of first diagnosis and date of locally advanced or metastatic diagnosis measured at baseline (date of locally advanced or metastatic diagnosis) (Up to 621.4 weeks)

  11. Age of Participants at Avelumab Initiation

    The age of participants at avelumab initiation was reported.

    Measured: At Index date (date of avelumab initiation between September 2020 to November 2021 ) as reported in the eCRF.

  12. Real-World Progression-Free Survival (Rw-PFS)

    Rw-PFS is the time from the start date of avelumab treatment to the first date of either: any evidence of progression or date of death.

    Measured: From participant eCRF index date (avelumab initiation between September 2020 to November 2021) to date of death by any cause, or date of censoring (whichever is first) (up to 24-months from initiation of avelumab treatment)

  13. Treatment Characteristics: Type of First Systemic Anticancer Treatment (SACT) Regimen Received Before Avelumab Start Date

    Number of participants who received type of First SACT regimen received were reported.

    Measured: From date of locally advanced or metastatic diagnosis to index date (Day 0) (avelumab initiation date between Sep 2020 to Nov 2021 as reported in the eCRF) (Up to 24 months)

  14. Treatment Characteristics: Number of First- Line Systematic Anti-Cancer Therapy (SACT) Cycles Received

    Number of first line SACT cycles received by participants was reported as treatment characteristics.

    Measured: From date of locally advanced or metastatic diagnosis to index date (Day 0) (avelumab initiation date between Sep 2020 to Nov 2021 as reported in the eCRF) (Up to 24 months)

  15. Treatment Characteristics: Number of Participants Switching Between Different Platinum-Based Chemotherapies

    Number of participants switching between different platinum-based chemotherapies were reported.

    Measured: From date of locally advanced or metastatic diagnosis to index date (Day 0) (avelumab initiation date between Sep 2020 to Nov 2021 as reported in the eCRF) (Up to 24 months)

  16. Treatment Characteristics: Time From Completion of First Line Systematic Anti-Cancer Therapy (SACT) to Start of Avelumab

    Time from completion of first line SACT to start of avelumab was reported. Calculated as the number of days from the end date of the last first line SACT cycle to the start date of avelumab, inclusive of the start and end dates of this period.

    Measured: From date of the last record of first line SACT to index date (Day 0) (avelumab initiation date between September 2020 - November 2021 as reported in the eCRF) (Up to 24 months)

  17. Treatment Characteristics: Response to First Line Therapy

    Response to first line therapy was reported. Response to first line SACT as reported in eCRF included: Complete Response (CR), Partial Response (PR) and Stable disease. The definitions of tumor responses are as follows: Complete or PR as the best adjudication result (CR > PR > stable disease [SD] > progressive disease [PD]) complies with the RECIST tumor assessment guidelines as closely as possible in clinical practice.

    Measured: From date of first line SACT initiation to index date (Day 0) (avelumab initiation date between September 2020 - November 2021 as reported in the eCRF) (Up to 24 months)

  18. Treatment Characteristics: Response to First-Line Therapy Based on Computed Tomography (CT) Scan Evidence

    Response to First Line therapy based on CT scan evidence was reported. Response to first line SACT was judged based on CT scan evidence after the last cycle of first line SACT, as reported in eCRF. Reported as Yes or No.

    Measured: From date of first line SACT initiation to index date (Day 0) (avelumab initiation date between September 2020 - November 2021 as reported in the eCRF) (Up to 24 months)

  19. Treatment Patterns: Duration of Treatment With Avelumab

    Duration was derived based on the date of avelumab initiation and the last date of avelumab treatment.

    Measured: From (avelumab initiation date between September 2020 - November 2021 as reported in the eCRF) to end date of avelumab, or date of censoring (whichever is first), assessed upto 24 months after avelumab initiation

  20. Treatment Patterns: Number of Participants Who Received Second-Line Therapy as Per eCRF

    Number of participants who received second-line therapy were reported.

    Measured: From (avelumab initiation date between September 2020 - November 2021 as reported in the eCRF) and end of follow-up (upto 24 months after avelumab initiation)

  21. Treatment Patterns: Time Interval Between Start of Avelumab and Start of Second-Line Therapy

    Time interval was derived using the dates of avelumab initiation and initiation of first regimen of second line therapy. This parameter was calculated only among participants who go on to receive second-line therapy after avelumab initiation.

    Measured: From (avelumab initiation date between September 2020 - November 2021 as reported in the eCRF)to start of second-line therapy assessed upto 24 months after avelumab initiation.

  22. Treatment Patterns: Systematic Anti-Cancer Therapy Regimen Received as Second Line Therapy

    Number of participants who received Systematic Anti-Cancer Therapy Regimen as Second Line Therapy was reported.

    Measured: From avelumab initiation date between September 2020 - November 2021 as reported in the eCRF and upto 24 months after avelumab initiation

  23. Treatment Patterns: High Dose Systemic Steroid Use

    Number of participants with high dose systemic steroid use was reported.

    Measured: From avelumab initiation date between September 2020 - November 2021 as reported in the eCRF up to 24 months after avelumab initiation

  24. Number of Participants With Adverse Events (AEs) Explicitly Attributed to Avelumab in a Real-World Population

    The number of separate AEs recorded per participants (with explicit linkage in the medical notes to avelumab) will be calculated using data from eCRF (each reported event on the eCRF counts as a separate AE).

    Measured: From participant eCRF index date (avelumab initiation between September 2020 to November 2021) to date of death by any cause, or date of censoring (whichever is first) (up to 24-months from initiation of avelumab treatment)

  25. Healthcare Resource Burden Associated With Avelumab Therapy: Accident and Emergency Visits

    The number of accident and emergency visits recorded per participant as reported on the eCRF was used to calculate the rate of events per participant per year of follow-up time.

    Measured: From participant eCRF index date (avelumab initiation between September 2020 to November 2021) to date of death by any cause, or date of censoring (whichever is first) (up to 24-months from initiation of avelumab treatment)

  26. Healthcare Resource Burden Associated With Avelumab Therapy: Hospitalizations

    The number of hospital admissions recorded per participant as reported on the eCRF was used to calculate the rate of events per participant per year of follow-up time

    Measured: From participant electronic case report form (eCRF) index date (avelumab initiation between September 2020 to November 2021) to date of death by any cause, or date of censoring (whichever is first) (up to 24-months from initiation of avelumab treatment)

  27. Healthcare Resource Burden Associated With Avelumab Therapy: Participants Duration of Hospitalisation

    Duration of Hospitalisation was reported.

    Measured: Time from the start date of platinum-basedchemotherapeutic treatment to the earliest of date of death or date of censoring,as reported on the eCRF assessed up to 24 months from avelumab initiation (index date)

  28. Real-World Overall Survival

    Real world overall suvival was the time from the start date of platinum-based chemotherapeutic treatment to the earliest of date of death or date of censoring, as reported on the eCRF.

    Measured: From participant electronic case report form (eCRF) index date (avelumab initiation between September 2020 to November 2021) to date of death by any cause, or date of censoring (whichever is first) (up to 24-months from initiation of avelumab treatment)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 May 2022
  2. Study start29 Jun 2022
  3. Primary completion27 Jun 2024
  4. Study completion27 Jun 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Other
Enrolment
106 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05366725
Sponsor's protocol ID
B9991047
Status last verified
Nov 2025
First submitted
4 May 2022
Last updated
2 Dec 2025
Individual data sharing
No: We are committed to enhancing public health through responsible sharing of clinical trial data. Following approval of a new product or a new indication for an approved product in both the US and the European Union, the study sponsor and/or its affiliated companies will share study protocols, anonymized patient data and study level data, and redacted clinical study reports with qualified scientific and medical researchers, upon request, as necessary for conducting legitimate research. Further information on how to request data can be found on our website bit.ly/IPD21

Questions about this trial

What is this clinical trial studying?

An observational study of Urothelial Cancer, run by Merck Healthcare KGaA, Darmstadt, Germany, an affiliate of Merck KGaA, Darmstadt, Germany at 10 sites in United Kingdom.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 2 Dec 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 10 sites in United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 2 Dec 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Real-World Overall Survival (time frame: From participant eCRF index date (avelumab initiation between September 2020 to November 2021) to date of death by any cause, or date of censoring (whichever is first) (up to 24-months from initiation of avelumab treatment)). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Dec 2025.

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