Study of Weekly Radiotherapy for Bladder Cancer
Bladder Cancer
Conditions: official terms
Urinary Bladder Neoplasms
Study Type
Study Phase
Study Design
Allocation: Randomized, Endpoint Classification: Safety Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
Name: Standard planning radiotherapy Type: Radiation
Name: Adaptive planning radiotherapy Type: Radiation
Overall Status
Background Localised muscle invasive bladder cancer (MIBC) is life-threatening and can cause significant symptoms. Around 50% of patients with MIBC who are referred for radiotherapy are unfit for standard radical treatment (surgery or daily radiotherapy with chemotherapy), but would have a normal life expectancy if their cancer were adequately controlled. Retrospective studies suggest that radiotherapy which is given weekly using fewer fractions and higher doses (hypofractionated), may be an alternative where daily radiotherapy is not an option.

Radiotherapy treatment is planned based on information from a CT scan which shows the position and shape of the bladder. This plan needs to take into account the fact that the bladder's shape and position can change, depending on how full it is and because of where it is in relation to the bowel. A safety margin is therefore added around the bladder on the planned treatment, to reduce the risk of missing any of the bladder with the radiotherapy.

It is now possible to take scans of the bladder's position before each treatment and adjust the position of the treatment plan accordingly to ensure the bladder is fully covered by it. In this study we are also looking at whether it is possible to design a series of treatment plans with different size safety margins and then choose one that fits best for each particular day. This is called 'adaptive radiotherapy'. This technique may enable accurate treatment delivery using smaller safety margins and this might help to reduce side effects.


In patients with MIBC not suitable for cystectomy or daily radiotherapy we aim to assess:

1. whether treatment using adaptive planning can be successfully delivered at multiple sites across the UK and results in acceptable levels of toxicity

2. the local tumour control rate achieved by hypofractionated weekly radiotherapy

3. the requirement to treat with adaptive planning.

How results will be used Results will provide robust evidence for use of hypofractionated radiotherapy and assess whether this is a plausible and worthwhile treatment in this patient population. The randomised element of the trial will support the implementation of image-guided adaptive radiotherapy for bladder cancer in the UK. HYBRID will provide evidence on the benefits or otherwise of this methodology and inform the development of further trials in this and other patient groups.
Criteria for eligibility
Healthy Volunteers: No
Maximum Age: N/A
Minimum Age: 18 Years
Gender: Both
Criteria: Inclusion Criteria:

- Written informed consent

- Age ≥18 years

- Histologically confirmed invasive bladder carcinoma (T2-T4a N0 M0; any histological sub-type)

- Unsuitable for radical cystectomy or daily fractionated radiotherapy for any reason (including performance status, co-morbidity, patient refusal)

- Expected survival >6 months

- WHO performance status 0-3

- Willing to undergo post treatment cystoscopy

Exclusion Criteria:

- Nodal or metastatic disease

- Concurrent malignancy

- Previous pelvic radiotherapy

- Urinary catheter in-situ

- Any other contra-indication to radiotherapy (e.g. inflammatory bowel disease)

- Unable to attend for post treatment follow up
Addenbrooke's Hospital
Cambridge, United Kingdom
Status: Recruiting
Velindre Cancer Centre
Cardiff, United Kingdom
Status: Recruiting
Ipswich Hospital
Ipswich, United Kingdom
Status: Recruiting
St James's University Hospital
Leeds, United Kingdom
Status: Not yet recruiting
Guy's & St Thomas's Hospital
London, United Kingdom
Status: Recruiting
Royal Marsden NHSFT
London, United Kingdom
Status: Recruiting
Contact: Robert Huddart
Royal Marsden NHSFT
London, United Kingdom
Status: Recruiting
University College London
London, United Kingdom
Status: Recruiting
Royal Preston Hospital
Preston, United Kingdom
Status: Not yet recruiting
Clatterbridge Cancer Centre
Wirral, United Kingdom
Status: Recruiting
Start Date
April 2014
Completion Date
January 2025
Institute of Cancer Research, United Kingdom
Institute of Cancer Research, United Kingdom
Record processing date processed this data on July 28, 2015 page