A trial of radiotherapy for people receiving atezolizumab for cancer of the urinary system

ISRCTN ISRCTN12606219
DOI https://doi.org/10.1186/ISRCTN12606219
EudraCT/CTIS number 2020-004893-23
IRAS number 280335
Secondary identifying numbers CPMS 48346, IRAS 280335
Submission date
10/06/2021
Registration date
10/06/2021
Last edited
06/03/2024
Recruitment status
No longer recruiting
Overall study status
Ongoing
Condition category
Cancer
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English Summary

Background and study aims
RE-ARM is a clinical trial for people who are already receiving treatment with either a drug called atezolizumab or a similar drug called avelumab for bladder or urinary system cancer (urothelial cancer) which has spread to other parts of their body (metastasised). RE-ARM investigates whether giving additional radiotherapy alongside atezolizumab can improve how well it works.
Atezolizumab is an immunotherapy drug which enhances the body’s natural immune response against cancer. It normally starts working after the first few weeks of treatment, but it can start working later on (late response), even if at the start there was no clear effect.
Radiotherapy can also improve the body’s cancer immune response. Previous studies suggest radiotherapy can be given safely in combination with immunotherapy and it may make it more likely to work. The RE-ARM study will assess whether giving people a short course of radiotherapy while they’re taking atezolizumab will increase the number who then have a late response.

Who can participate?
People receiving atezolizumab or avelumab for metastatic urothelial cancer

What does the study involve?
102 participants will be enrolled and assigned to one of two groups at random. Half (51) will take atezolizumab on its own. The other half will take atezolizumab alongside a short course of radiotherapy targeted at one site of their cancer. Participants in both groups will continue to receive atezolizumab every three weeks until it is no longer helping to keep their cancer under control.
Participants will have check-ups every three weeks to check and treat any symptoms they may be having and scans every 9-12 weeks to check whether their cancer is responding to treatment. This schedule is based on the standard treatment and monitoring schedule used for atezolizumab. After people stop their atezolizumab treatment patients will continue to be followed up every 3 months.

What are the possible benefits and risks of participating?
There is no guarantee that participants will benefit directly from taking part in RE-ARM.
Participants may have side effects from the study treatment and participants will be informed of the potential for side effects caused by atezolizumab and radiotherapy via their doctor and the patient information sheet. The information we get from this study may help in treating people with metastatic urothelial cancer in the future

Where is the study run from?
The Institute of Cancer Research (UK)

When is the study starting and how long is it expected to run for?
January 2021 to December 2025

Who is funding the study?
1. Cancer Research UK
2. Roche (Switzerland)

Who is the main contact?
Hannah Gribble, REARM-icrctsu@icr.ac.uk

Study website

Contact information

Ms Hannah Gribble
Scientific

ICR-CTSU
The Institute of Cancer Research
15 Cotswold Road
Sutton
SM2 5NG
United Kingdom

Phone +44 (0)20 8722 4613
Email rearm-icrctsu@icr.ac.uk

Study information

Study designInterventional randomized controlled trial
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Hospital
Study typeTreatment
Participant information sheet Not available in web format, please use the contact details below to request a patient information sheet
Scientific titleA Randomised phase II trial of Enhancement of efficacy of Atezolizumab by Radiotherapy in Metastatic urothelial carcinoma
Study acronymRE-ARM
Study hypothesisCurrent study hypothesis as of 31/07/2023:
The addition of palliative radiotherapy to atezolizumab will improve cancer response for people who have been receiving atezolizumab or maintenance avelumab for metastatic urothelial carcinoma without previous response.

Previous study hypothesis:
The addition of palliative radiotherapy to atezolizumab will improve cancer response for people who have been receiving atezolizumab for metastatic urothelial carcinoma without previous response.
Ethics approval(s)Approved 09/03/2021, London - Surrey Borders REC (Health Research Authority, Skipton House, 80 London Road, London, SE1 6LH, UK; +44 (0)207 104 8120; surreyborders.rec@hra.nhs.uk), ref: 21/LO/0150
ConditionUrothelial cancer
InterventionCurrent interventions as of 31/07/2023:
DESIGN
RE-ARM is a phase II trial that will take place at several NHS hospitals around the country. It will recruit 102 participants from approximately 20 participating sites within the UK. The RE-ARM trial is for people with advanced urothelial cancer who are having atezolizumab or maintenance avelumab as part of their routine treatment, but have not had a response after the first 9 weeks of treatment. Patients who are able to continue to receive atezolizumab will be invited to join the trial by their doctor at the hospital where they are receiving treatment.

RANDOMISATION
Participants will have assessments within 28 days prior to entering the trial to check it is a suitable option for them.
Those assessments include:
1. Physical examination
2. Medical history
3. Full blood count, urea and electrolytes, amylase and liver function assessment
4. Thyroid function assessment
5. Blood tests for HIV, hepatitis B and hepatitis C
6. Assessment of symptoms and current medication
7. CT chest abdomen pelvis

Those who agree to join the trial will be allocated to one of two treatment groups:
1. Atezolizumab treatment on its own
2. Atezolizumab and having radiotherapy as well.

People who take part will be allocated to these groups at random by the central coordinating centre. This is to help make sure that any differences we see between treatment response in each group is due to the treatment they have received.
Participants will have a series of study visits, the timing of the visits and assessments to be performed are described below.

TREATMENT AND ASSESSMENT SCHEDULE:

Group 1 - Atezolizumab only
Participants will receive atezolizumab every 3 weeks for a maximum of two years or until it is no longer suitable for the participant to continue receiving atezolizumab.

Group 2 - Atezolizumab plus radiotherapy
Participants allocated to also receive radiotherapy will follow the same schedule as group 1 but will also receive radiotherapy during their first 3 weeks of atezolizumab treatment within RE-ARM. The radiotherapy treatment will be given over five visits during one week.

The assessment schedule will be the same for both group 1 and 2 and has been designed to mirror the standard assessment schedule for those being treated with atezolizumab as standard of care outside the trial setting as far as possible.

Assessments during atezolizumab treatment:
The following assessments should be conducted before each three-weekly cycle (within 72 hrs prior to day 1):
• Physical examination
• Full blood count, urea and electrolytes, amylase, liver function assessment
• Thyroid function (every 6 weeks)
• Assessment of symptoms and current medication
• A CT scan of their chest, abdomen and pelvis (Every 9 weeks within the first year of treatment, then every 12 weeks within the second year of treatment. If the participants cancer has worsened a scan will be performed six weeks later, then twelve week later, before reverting back to the original schedule).

Assessments after atezolizumab treatment:
There will be no trial specific assessments after treatment is completed, however symptoms and side effects will continue to be monitored for 90 days after treatment completion and three monthly updates on health status will be collected from participating sites until trial closure/participants’ death.
If participants agree to participate in the quality of life or sample sub-studies, assessments will take place at the following time points:

Quality of life:
Participants will complete a questionnaire called EORTC QLQ-C30 at screening, week 9, 6 and 12 months.

Sample collection sub-study:
Blood samples for research will be collected at screening, during radiotherapy for those in group 2, week 3, week 9 and if the participant's cancer becomes worse.

Previous interventions:
DESIGN
RE-ARM is a phase II trial that will take place at several NHS hospitals around the country. It will recruit 102 participants from approximately 20 participating sites within the UK. The RE-ARM trial is for people with advanced urothelial cancer who are having atezolizumab as part of their routine treatment, but have not had a response after the first 9 weeks of treatment. Patients who are able to continue to receive atezolizumab will be invited to join the trial by their doctor at the hospital where they are receiving treatment.

RANDOMISATION
Participants will have assessments within 28 days prior to entering the trial to check it is a suitable option for them.
Those assessments include:
• Physical examination
• Medical history
• Full blood count, urea and electrolytes, amylase and liver function assessment
• Thyroid function assessment
• Blood tests for HIV, hepatitis B and hepatitis C
• Assessment of symptoms and current medication
• CT chest abdomen pelvis

Those who agree to join the trial will be allocated to one of two treatment groups:
1. Continuing atezolizumab treatment on its own
2. Continuing atezolizumab and having radiotherapy as well.

People who take part will be allocated to these groups at random by the central coordinating centre. This is to help make sure that any differences we see between treatment response in each group is due to the treatment they have received.

Participants will have a series of study visits, the timing of the visits and assessments to be performed are described below.

TREATMENT AND ASSESSMENT SCHEDULE:
Group 1 - Atezolizumab only
Participants will receive atezolizumab every 3 weeks for a maximum of two years or until it is no longer suitable for the participant to continue receiving atezolizumab.
Group 2 - Atezolizumab plus radiotherapy
Participants allocated to also receive radiotherapy will follow the same schedule as group 1 but will also receive radiotherapy during their first 3 weeks of atezolizumab treatment within RE-ARM. The radiotherapy treatment will be given over five visits during one week.

The assessment schedule will be the same for both group 1 and 2 and has been designed to mirror the standard assessment schedule for those being treated with atezolizumab as standard of care outside the trial setting as far as possible.

Assessments during atezolizumab treatment:
The following assessments should be conducted before each three-weekly cycle (within 72 hrs prior to day 1):
• Physical examination
• Full blood count, urea and electrolytes, amylase, liver function assessment
• Thyroid function (every 6 weeks)
• Assessment of symptoms and current medication
• A CT scan of their chest, abdomen and pelvis (Every 9 weeks within the first year of treatment, then every 12 weeks within the second year of treatment. If the participants cancer has worsened a scan will be performed six weeks later, then twelve week later, before reverting back to the original schedule).

Assessments after atezolizumab treatment:
There will be no trial specific assessments after treatment is completed, however symptoms and side effects will continue to be monitored for 90 days after treatment completion and three monthly updates on health status will be collected from participating sites until trial closure/participants’ death.
If participants agree to participate in the quality of life or sample sub-studies, assessments will take place at the following time points:
Quality of life:
Participants will complete a questionnaire called EORTC QLQ-C30 at screening, week 9, 6 and 12 months.
Sample collection sub-study:
Blood samples for research will be collected at screening, during radiotherapy for those in group 2, week 6, week 9 and if the participant's cancer becomes worse.
Intervention typeDrug
Pharmaceutical study type(s)
PhasePhase II
Drug / device / biological / vaccine name(s)Atezolizumab
Primary outcome measureObjective response rate according to RECIST v1.1 at 9 weeks after the start of study
Secondary outcome measures1. Objective response rate according to iRECIST at nine weeks after the start of study
2. Clinical benefit according to RECIST v1.1 at nine weeks after the start of study
3. Best response according to RECIST v1.1 at six months after the start of study
4. Duration of response measured using patient records at the end of the study
5. Time to progression measured using patient records at the end of the study
6. Progression free survival measured using patient records at the end of the study
7. Overall survival measured using patient records at the end of the study
8. Treatment related toxicity (CTCAE v5) at the end of the study
9. Patient reported quality of life (EORTC QLQ-C30 & EQ-5D-5L) up to 12 months
Overall study start date01/01/2021
Overall study end date31/12/2025

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit18 Years
SexBoth
Target number of participantsPlanned Sample Size: 102; UK Sample Size: 102
Participant inclusion criteriaCurrent inclusion criteria as of 31/07/2023:
1. Histologically confirmed metastatic urothelial carcinoma not amenable to curative treatment with surgery or radiotherapy. Mixed histology is permitted if predominantly TCC
2. Patients experiencing progressive disease (according to local investigator assessment) during up to six months of treatment with either open-label atezolizumab* (first, second or third line¥) or maintenance avelumab (following platinum-based chemotherapy); or patients with an overall best response of stable disease after a minimum of 3 cycles and a maximum of six months of open label atezolizumab
3. At least one extra-cranial metastatic site suitable for radiotherapy (see section 9.1)
4. At least one RECIST v1.1 measurable lesion distant to the planned site of radiotherapy
5. No radiotherapy within four weeks prior to starting pre-study atezolizumab/avelumab or during atezolizumab or avelumab treatment
6. Satisfactory haematological and biochemical profile (Hb >90 g/L, Plt>100 x 109/L, WBC > 3.0 x 109/L, creatinine < 1.5 ULN, AST or ALT <3X ULN, bilirubin <1.5x ULN)
7. ECOG PS 0-1
8. Age ≥18 years
9. Written informed consent
* In accordance with therapeutic indications as stated in the current summary of product characteristics
¥ Neoadjuvant treatment received more than a year prior to trial entry will not be considered a line of treatment

Previous inclusion criteria:
1. Histologically confirmed metastatic urothelial carcinoma not amenable to curative treatment with surgery or radiotherapy. Mixed histology is permitted if predominantly TCC
2. Received a minimum of 3 cycles and maximum of 6 cycles of open label atezolizumab treatment* (either first, second or third line¥) with an overall best response of stable disease according to local investigator assessment
3. At least one extra-cranial metastatic site suitable for radiotherapy
4. At least one additional RECIST v1.1 measurable lesion distant to planned site for radiotherapy
5. No radiotherapy within four weeks prior to starting pre-study atezolizumab or during atezolizumab treatment
6. Satisfactory haematological and biochemical profile (Hb >90 g/L, Plt>100 x 10^9/L, WBC >3.0 x 10^9/L, creatinine <1.5 ULN, AST or ALT <3X ULN, bilirubin <1.5x ULN)
7. ECOG PS 0-1
8. Age >=18 years
9. Written informed consent
* In accordance with therapeutic indications as stated in the current summary of product characteristics
¥ Neoadjuvant treatment received more than a year prior to trial entry will not be considered a line of treatment
Participant exclusion criteriaCurrent exclusion criteria as of 31/07/2023:
1. Any contraindication to atezolizumab treatment in the local investigator’s opinion (e.g. toxicity [see Section 9.2.8], rapidly progressive disease requiring alternative treatment such as chemotherapy)
2. Greater than 8 weeks since the last dose of atezolizumab or maintenance avelumab
3. Over 6 months’ treatment with atezolizumab or maintenance avelumab prior to randomisation
4. Planned or anticipated clinical need for palliative radiotherapy within 9 weeks following trial entry
5. Received any anti-PD1/PD-L1 or anti-CTLA-4 therapy prior to commencement of atezolizumab or maintenance avelumab
6. Received atezolizumab in combination with chemotherapy
7. Immunosuppressive treatment (apart from corticosteroids at a dose equivalent of prednisolone ≤10 mg daily) within 2 weeks prior to randomisation.
8. Contraindication to radiotherapy (e.g. radiation sensitivity syndrome)
9. Autoimmune disease requiring active immunotherapy treatment or with life-threatening complications. Patients with vitiligo, controlled psoriasis, autoimmune thyroid disease, type 1 diabetes will be eligible
10. History of pneumonitis
11. Presence of known active brain metastases (brain metastases which have received treatment and are controlled do not preclude randomisation)
12. Active HIV, hepatitis B or hepatitis C infection – patients with asymptomatic or controlled disease may join the trial following review and approval by the Chief Investigator. Participants with these conditions, either active or previous, are not eligible to provide samples for the translational substudy
13. Pregnant or lactating women
14. Administration of a live, attenuated vaccine within 28 days prior to study entry
15. Anticipated life expectancy <10 weeks

Previous exclusion criteria:
1. Any contraindication to continued atezolizumab treatment in the local investigator’s opinion (e.g. toxicity, rapidly progressive disease requiring alternative treatment such as chemotherapy)
2. Received anti-PD1/PD-L1, anti-CTLA-4 therapy prior to commencement of atezolizumab
3. Received atezolizumab in combination with chemotherapy
4. Immunosuppressive treatment (apart from corticosteroids at a dose equivalent of prednisolone <=10mg daily) within 2 weeks prior to study entry
5. Contraindication to radiotherapy (e.g. radiation sensitivity syndrome)
6. Autoimmune disease requiring active immunotherapy treatment or with life-threatening complications. Patients with vitiligo, controlled psoriasis, autoimmune thyroid disease, and type 1 diabetes will be eligible.
7. History of pneumonitis
8. Presence of known active brain metastases (brain metastases which have received treatment and are controlled do not preclude trial entry)
9. Active HIV, hepatitis B or hepatitis C infection – patients with asymptomatic or controlled disease may join the trial following review and approval by the Chief Investigator
10. Pregnant or lactating women
11. Administration of a live, attenuated vaccine within 28 days prior to study entry
12. Anticipated life expectancy <10 weeks
Recruitment start date19/07/2021
Recruitment end date06/03/2024

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centres

Royal Marsden Hospital
Downs Road
Sutton
SM2 5PT
United Kingdom
The Royal Marsden Hospital (london)
Fulham Road
London
SW3 6JJ
United Kingdom
Charing Cross Hospital
Fulham Palace Road
London
W6 8RF
United Kingdom
Southampton General Hospital
Tremona Road
Southampton
SO16 6YD
United Kingdom
Royal Free Hospital
Pond Street
London
NW3 2QG
United Kingdom
University College London Hospital
250 Euston Road
London
NW1 2PG
United Kingdom
The James Cook University Hospital
Marton Road
Middlesbrough
TS4 3BW
United Kingdom
Clatterbridge Cancer Centre
Clatterbridge Hospital
Clatterbridge Road
Wirral
CH63 4JY
United Kingdom
Royal Devon and Exeter Hospital
Barrack Road
Exeter
EX2 5DW
United Kingdom
Leicester General Hospital
Gwendolen Road
Leicester
LE5 4PW
United Kingdom
Belfast City Hospital
51 Lisburn Rd
Belfast
BT9 7AB
United Kingdom
St Bartholomew's Hospital
West Smithfield
London
EC1A 7BE
United Kingdom
University Hospitals Coventry & Warwickshire
Clifford Bridge Road
Coventry
CV2 2DX
United Kingdom
The Christie Clinic
550 Wilmslow Road
Manchester
M20 4BX
United Kingdom

Sponsor information

Institute of Cancer Research
Research organisation

123 Old Brompton Road
London
SW7 3RP
United Kingdom

Phone +44 (0)2087225360
Email barbara.pittam@icr.ac.uk
Website http://www.icr.ac.uk/
ROR logo "ROR" https://ror.org/043jzw605

Funders

Funder type

Charity

Cancer Research UK
Private sector organisation / Other non-profit organizations
Alternative name(s)
CR_UK, Cancer Research UK - London, CRUK
Location
United Kingdom
F. Hoffmann-La Roche
Private sector organisation / For-profit companies (industry)
Alternative name(s)
Hoffman-La Roche, F. Hoffmann-La Roche Ltd.
Location
Switzerland

Results and Publications

Intention to publish date01/12/2026
Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryAvailable on request
Publication and dissemination planThe RE-ARM results will be presented at relevant international conferences and published in a peer reviewed journal when available. A lay summary will also be prepared to accompany the peer-reviewed publication.
IPD sharing planThe datasets generated during and/or analysed during the current study are/will be available upon request from rearm-icrctsu@icr.ac.uk.

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
HRA research summary 28/06/2023 No No

Editorial Notes

06/03/2024: The recruitment end date was changed from 30/09/2024 to 06/03/2024.
12/12/2023: The individual participant data (IPD) sharing plan and summary were updated.
31/07/2023: The following changes were made to the study record:
1. The study hypothesis, interventions, inclusion and exclusion criteria were updated.
2. Study website added.
3. The recruitment end date was changed from 30/06/2023 to 30/09/2024.
4. The Royal Marsden Hospital (Chelsea), Charing Cross Hospital, Southampton General Hospital, The Royal Free Hospital, University College Hospital, James Cook university Hospital, The Clatterbridge Cancer Centre
Royal Devon & Exeter Hospital, Leicester General Hospital, Belfast City Hospital, St Bartholomew’s Hospital, University Hospitals Coventry, and The Christie Cancer Centre were added as study participating centres.
13/07/2021: The recruitment start date was changed from 01/07/2021 to 19/07/2021.
10/06/2021: Trial's existence confirmed by the National Institute for Health Research (NIHR) (UK).