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Urinary Bladder NeoplasmsPhase 2DISCUSNCT06892860

Comparing 3 vs 6 Cycles of Platinum-based Chemotherapy Prior to Maintenance Avelumab in Advanced Urothelial Cancer

A Phase 2 study testing Avelumab in people with Urinary Bladder Neoplasms, run by Queen Mary University of London at 3 sites in 3 countries.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

This is an adaptive, open-label, randomised phase II trial that aims to evaluate the impact of 3 vs 6 cycles of first-line platinum-based chemotherapy followed by maintenance avelumab in the quality of life of patients with locally advanced or metastatic urothelial cancer. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Urinary Bladder Neoplasms
What is being tested?
Avelumab
Could I receive a placebo?
No, everyone receives an active treatment
How many people
320 participants
Where
3 sitesin 3 countries
Study dates
16 Dec 2021to 22 Dec 2027
Phase
Phase 2
Are there results?
Not yet: the study is under way

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

Who may be able to join

  • Willing and able to provide written informed consent.
  • Ability to comply with the protocol, including but not limited to, the repeated completion of the EORTC QLQ-C30 questionnaires.
  • Age ≥ 18 years.
  • Histologically confirmed, unresectable locally advanced or metastatic urothelial carcinoma (i.e., cancer of the bladder, renal pelvis, ureter, or urethra). Patients with squamous or sarcomatoid differentiation or mixed cell types are eligible but a component of urothelial cancer is required.
  • Measurable disease by RECIST v1.1.
  • Eligible for gemcitabine/ cisplatin or gemcitabine/carboplatin. The following criteria are established for the use of carboplatin (patients not fulfilling the following carboplatin criteria should be considered for gemcitabine/ cisplatin):
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  • GFR <60 mL/min but ≥30 mL/min (measured by the Cockcroft-Gault formula or by local accepted standards). Subjects with a GFR ≥50 mL/min and no other cisplatin ineligibility criteria may be considered cisplatin-eligible based on the investigator's clinical judgement.
  • ECOG or WHO performance status of 2.
  • NCI CTCAE Grade ≥2 audiometric hearing loss.
  • NYHA Class III heart failure.
  • Eastern Cooperative Oncology Group (ECOG) Performance Status score of 0, 1 or 2.
  • Adequate haematologic and organ function as defined below:
  • Negative serum or urine pregnancy test within 2 weeks of Day 1 Cycle 1 for female patients of childbearing potential only.
  • Agreement to use adequate contraceptive measures

Who cannot join

  • 1. Prior treatment with a PD-(L)-1 inhibitor for any advanced malignancy. Treatment with PD-(L)-1 inhibitors in the neoadjuvant or adjuvant setting for UC are permitted.
  • 2. Prior systemic therapy for locally advanced or metastatic urothelial carcinoma with the following exceptions: a platinum containing regimen (cisplatin or carboplatin) in the neoadjuvant or adjuvant setting if more than 6 months since last cycle have occurred. Patients who received adjuvant or neoadjuvant immune therapy for muscle invasive or non-muscle invasive disease are eligible.
  • 3. Pregnant and lactating female patients. 4. Known history of active CNS metastases. Patients with treated CNS metastases are permitted on the study if all of the following are true: 5. Prior allogeneic stem cell or solid organ transplantation. 6. Administration of a live, attenuated vaccine within 4 weeks prior to enrolment or anticipation that such a live, attenuated vaccine will be required during the study.
  • 7. Treatment with systemic immunostimulatory agents (including but not limited to interferons or interleukin [IL]-2) within 4 weeks or five half-lives of the drug, whichever is shorter, prior to enrolment (see section 11.26).
  • 8. Concurrent treatment with any other investigational agent or participation in another clinical trial with therapeutic intent within 4 weeks prior to enrolment.
  • 9. Evidence of significant uncontrolled concomitant disease that could affect compliance with the protocol or interpretation of results, including significant liver disease (such as cirrhosis, uncontrolled major seizure disorder, or superior vena cava syndrome).
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  • 10. Malignancies other than urothelial carcinoma within 3 years prior to Cycle 1, Day 1, with the exception of those with a negligible risk of metastasis or death and treated with expected curative outcome (such as adequately treated carcinoma in situ of the cervix, basal or squamous cell skin cancer, or ductal carcinoma in situ treated surgically with curative intent) or localized prostate cancer treated with curative intent and absence of prostate-specific antigen (PSA) relapse or incidental prostate cancer (Gleason score ≤ 3 + 4 and PSA < 10 ng/mL undergoing active surveillance and treatment naive). .
  • 11. Significant cardiovascular disease, such as New York Heart Association cardiac disease (Class II or greater), myocardial infarction or cerebral vascular accident/stroke within 6 months prior to enrolment, unstable arrhythmias, or unstable angina.
  • 12. Radiotherapy within 2 weeks prior to C1D1. Patients must have recovered adequately from toxicities resulting from the intervention prior to starting study treatment.
  • 13. Major surgery (defined as requiring general anaesthesia and >24-hour inpatient hospitalization) within 4 weeks prior to randomisation. Patients must have recovered adequately from complications from the intervention prior to starting study treatment.
  • 14. History of idiopathic pulmonary fibrosis (including pneumonitis), drug-induced pneumonitis, organizing pneumonia (i.e., bronchiolitis obliterans, cryptogenic organizing pneumonia), or evidence of active pneumonitis on screening chest CT scan (History of radiation pneumonitis in the radiation field (fibrosis) is permitted).
  • 15. Active hepatitis infection (defined as having a positive hepatitis B surface antigen [HBsAg] test at screening) or hepatitis C. Patients with past hepatitis B virus (HBV) infection or resolved HBV infection (defined as having a negative HBsAg test and a positive antibody to hepatitis B core antigen [anti-HBc] antibody test) are eligible.
  • 16. Positive HIV test. 17. Active tuberculosis. 18. Active autoimmune disease including but not limited to myasthenia gravis, myositis, autoimmune hepatitis, systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, vascular thrombosis associated with antiphospholipid syndrome, Wegener's granulomatosis, Sjögren's syndrome, Guillain-Barré syndrome, multiple sclerosis, vasculitis, or glomerulonephritis.
  • 19. History of autoimmune-related hypothyroidism, unless on a stable dose of thyroid replacement hormone.
  • 20. History of severe allergic, anaphylactic, or other hypersensitivity reactions to chimeric or humanized antibodies.
  • 21. Known hypersensitivity or allergy to biopharmaceuticals produced in Chinese hamster ovary cells or any component of avelumab.
  • 22. Active infection requiring systemic therapy. 23. Persisting toxicity related to prior therapy (NCI CTCAE Grade > 1); however, alopecia, sensory neuropathy Grade ≤ 2, or other Grade ≤ 2 not constituting a safety risk based on investigator's judgment are acceptable.
  • 24. Any condition that, in the opinion of the investigator, would interfere with evaluation of study treatment or interpretation of patient safety or study results 25. Participants with previous or known history of allergic reaction to cisplatin, gemcitabine, carboplatin or other platinum containing compounds, or any component of the chemotherapy formulations.
  • 26. Patients with bleeding tumours 27. Any other contraindication for gemcitabine/ cisplatin or gemcitabine/carboplatin treatment as per SmPC.

Trial locations and contacts

3 sites in 3 countries. Contact the study team or a site near you to ask about taking part.

DISCUS Trial Coordinator contact

bci-discus@qmul.ac.uk

Bci-discus@qmul.ac.uk

Thomas Powles contact

thomas.powles1@nhs.net

3 sites in 3 countries

France1 site, 1 recruiting
  • Unicancer

    Paris

    Yohann Loriot, +442078848497, bci-discus@qmul.ac.uk

    Recruiting

Other trials in France

Spain1 site, 1 recruiting
  • Adknoma

    Madrid

    Enrolling by invitation

Other trials in Spain

United Kingdom1 site, 1 recruiting
  • Barts Health NHS Trust

    London

    Thomas Powles

    Recruiting

Other trials in United Kingdom

About this study

Official title: A Randomised Phase II Study Comparing 3 vs 6 Cycles of Platinum-based Chemotherapy Prior to Maintenance Avelumab in Advanced Urothelial Cancer

This is an adaptive, open-label, randomised phase II trial that aims to evaluate the impact of 3 vs 6 cycles of first-line platinum-based chemotherapy followed by maintenance avelumab in the quality of life of patients with locally advanced or metastatic urothelial cancer. Initially, 224 eligible and evaluable patients (112 in each arm) will receive 3 cycles vs 6 cycles of 3-weekly gemcitabine plus cisplatin/carboplatin, followed by 2-weekly maintenance avelumab until disease progression or intolerable toxicities. Avelumab treatment will be given up to a maximum of 2 years from the end of chemotherapy.

Being tested
Avelumab
Medical subject headings
Urinary Bladder Neoplasms

What participants receive

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

  • AvelumabDrug

    Avelumab treatment will be given up to a maximum of 2 years from the end of chemotherapy

Study groups in NCT06892860
Study groupRoleWhat they receive
3 cycles of gemcitabine + cisplatin/carboplatin followed by avelumabExperimentalGemcitabine and cisplatin/carboplatin will be dispensed to patients on day 1 of each 21-day cycle of chemotherapy (3 cycles). Gemcitabine will additionally be dispensed to patients on day 8 of each 21-day cycle of chemotherapy. Following completion of gemcitabine and cisplatin/carboplatin chemotherapy, patients will then receive maintenance avelumab within 10 weeks of completing chemotherapy, on day 1 and 15 of each 28-day cycle for up to 2 years after the end of chemotherapy.
Receives: Drug: Avelumab
6 cycles of gemcitabine + cisplatin/carboplatin followed by avelumabActive comparatorGemcitabine and cisplatin/carboplatin will be dispensed to patients on day 1 of each 21-day cycle of chemotherapy (6 cycles). Gemcitabine will additionally be dispensed to patients on day 8 of each 21-day cycle of chemotherapy. Following completion of gemcitabine and cisplatin/carboplatin chemotherapy, patients will then receive maintenance avelumab within 10 weeks of completing chemotherapy, on day 1 and 15 of each 28-day cycle for up to 2 years after the end of chemotherapy.
Receives: Drug: Avelumab

What is being measured

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

  1. To evaluate the effect of 3 vs 6 cycles platinum-based, front-line chemotherapy followed by maintenance avelumab based on patient-reported outcomes (PROs) in the study population.

    Change in GHS/QoL scale scores from baseline to completion of 6 cycles of treatment. Patients who withdraw from treatment between Cycles 4 and 6 will be included, provided an EORTC QLQ-C30 questionnaire is completed within 14 days from the date of withdrawal.

    Measured: Cycle 6 (Arm A: 3x cycles of chemotherapy (21 days per cycle) plus 3x cycles of Avelumab (28 days per cycle), Arm B: 6 cycles of chemotherapy only (21 days per cycle)

Secondary outcomes (4)
  1. To evaluate the effect of 3 vs 6 cycles platinum-based, front-line chemotherapy followed by maintenance avelumab based on additional patient-reported outcomes (PROs) in the study population.

    Quality of Life Assessment using the GHS/QOL scale score

    Measured: 10 cycles of treatment (Arm A: 3x cycles of chemotherapy (21 days per cycle) plus 7x cycles of Avelumab (28 days per cycle), Arm B: 6 cycles of chemotherapy (21 days per cycle) followed by 4x cycles of avelumab (28 days per cycle))

  2. To evaluate the effect of 3 vs 6 cycles platinum-based, front-line chemotherapy followed by maintenance avelumab based on clinician reported outcomes.

    Performance Status as measured by the Karnofsky Scale on completion of 6 cycles of treatment.

    Measured: On completion of 6 cycles of treatment (From baseline to completion of cycle 6 (Arm A: 3x cycles of chemotherapy (21 days per cycle) plus 3x cycles of Avelumab (28 days per cycle), Arm B: 6 cycles of chemotherapy only (21 days per cycle)))

  3. To evaluate the safety and tolerability of 3 vs 6 cycles of platinum-based, front-line chemotherapy followed by maintenance avelumab therapy.

    Adverse events graded according to NCI-CTCAE v5.0

    Measured: From baseline throughout treatment (From baseline to completion of cycle 6 (Arm A: 3x cycles of chemotherapy followed by Avelumab, Arm B: 6 cycles of chemotherapy followed by Avelumab) for a maximum of 2 years on avelumab.

  4. To assess the efficacy of 3 vs 6 cycles platinum based, front-line chemotherapy followed by maintenance avelumab in patients with advanced UC.

    Efficacy endpoints

    Measured: Baseline until end of trial participation (maximum of 2 years on avelumab)

Timeline

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

  1. First posted25 Mar 2025
  2. Study start16 Dec 2021
  3. Primary completion30 Jun 2027 (estimated)
  4. Study completion22 Dec 2027 (estimated)

Resources

More details

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

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
320 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06892860
Sponsor's protocol ID
DISCUS
Acronym
DISCUS
Status last verified
May 2026
First submitted
29 Jul 2022
Last updated
6 May 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Powles T, Hussain SA, Climent MA, Carbonero IG, Molina-Cerrillo J, Puente J, Borrega P, Malik J, Dourthe LM, Jones R, Castellano D, Duran I, Loriot Y, Priyadarshini G, Szabados B, Jamal F, Wang YQ, Kotriwala N, Jackson-Spence F, Ackerman C, Grande E. Three versus six cycles of platinum-based chemotherapy followed by avelumab maintenance as first-line treatment for advanced urothelial cancer: the phase II DISCUS trial. Ann Oncol. 2026 Feb;37(2):250-259. doi: 10.1016/j.annonc.2025.10.011. Epub 2025 Oct 17.

    PubMed 41110700

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Avelumab in people with Urinary Bladder Neoplasms, run by Queen Mary University of London at 3 sites in 3 countries.

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 14 inclusion and 19 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: looking for participants now, as of the sponsor's last update on 6 May 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 3 sites in France, Spain, 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.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

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

Contact DISCUS Trial Coordinator (bci-discus@qmul.ac.uk, Bci-discus@qmul.ac.uk), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

To evaluate the effect of 3 vs 6 cycles platinum-based, front-line chemotherapy followed by maintenance avelumab based on patient-reported outcomes (PROs) in the study population. (time frame: Cycle 6 (Arm A: 3x cycles of chemotherapy (21 days per cycle) plus 3x cycles of Avelumab (28 days per cycle), Arm B: 6 cycles of chemotherapy only (21 days per cycle)). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06892860, which also lists 1 linked publication.

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 6 May 2026.

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