Randomized Trial of stAndard of Care With or Without Metastases-directed Stereotactic Body Radiation Therapy in Patients Affected by Oligometastatic uRothelial carcinomA (ASTRA)

April 24, 2026 updated by: Istituto Clinico Humanitas

Randomized Trial of stAndard of Care With or Without Metastases-directed Stereotactic Body Radiation Therapy in Patients Affected by Oligometastatic uRothelial carcinomA: ASTRA Trial

Bladder cancer is the most common type of urothelial cancer. When the disease has spread to other parts of the body (metastatic disease), the prognosis is often poor, because there are only a few effective treatment options available.

At the moment, standard treatment mainly includes systemic therapies, such as chemotherapy and immunotherapy (immune checkpoint inhibitors). These treatments act on the whole body. However, the use of local treatments, such as stereotactic radiotherapy, has not been well studied in bladder cancer.

Stereotactic radiotherapy is a type of radiation treatment that delivers very high doses of radiation to the tumor in a small number of treatment sessions. This technique is already widely used to treat a limited number of metastases (called oligometastases) from other types of cancer.

The aim of this study is to understand whether stereotactic radiotherapy is also effective and safe for treating oligometastases coming from bladder cancer.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

44

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

  • Italy
    • Milan
      • Rozzano, Milan, Italy, 20089

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Age > 18 years
  • WHO performance status ≤ 2
  • Pathological proven urothelial carcinoma
  • Stage IV disease at imaging
  • Maximum of 3 extracranial metastases
  • Indication to receive I or II line of standard systemic therapy
  • Adequate liver function
  • Adequate bone marrow function
  • Written informed consent

Exclusion Criteria:

  • Inability to provide informed consent
  • Previous radiation therapy on the same target lesions
  • Pregnant or breastfeeding patients
  • Prior malignancy within the last five years (except adequately treated basal cell carcinoma of the skin or in situ carcinoma of the skin or in situ carcinoma of the cervix, surgically cured, or localized prostate cancer without evidence of biochemical progression)
  • Mental conditions rendering the patient incapable to understand the nature, scope, and consequences of the study
  • WHO PS >=3

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
No Intervention: ONLY SYSTEMIC TREATMENT
patients will be treated according to clinical practice with systemic treatment only
Experimental: SBRT
patients will be treated with systemic treatment and SBRT on oligometastatic lesions
Radiation: SBRT
Stereotactic radiotherapy is a type of radiation treatment that delivers very high doses of radiation to the tumor in a small number of treatment sessions, it wil be used to treat oligometastatic disease

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
SBRT Outcome
Time Frame: From treatment to 12 months follow up
evaluation of the effectiveness of treatment through conventional imaging. The response will be classified according to RECIST (Response Evaluation Criteria in Solid Tumours, version 1.1) and PERCIST13 criteria
From treatment to 12 months follow up

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
SBRT Toxicities
Time Frame: From treatment to 12 months follow up
assessment of treatment-related toxicities following the CTCAE V. 4.0 scale
From treatment to 12 months follow up
quality of life of treated patients
Time Frame: from treatment to 12 months follow up
Quality of life will be scored using the Quality of life questionnaire (QLQ)-C30. a low score means a good quality of life while high values indicate a poor quality of life.
from treatment to 12 months follow up
immune response in patients treated with SBRT
Time Frame: from treatment to 12 months follow up
Monitoring of the dynamics of innate (monocytic and granulocytic cells, Natural killer cells) and adaptive (T cells, B cells) immune subsets in the peripheral blood of patients before and after RT.
from treatment to 12 months follow up

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Istituto Clinico Humanitas

Collaborators

Varian, a Siemens Healthineers Company

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

  • Common Terminology Criteria for Adverse Events (CTCAE) Version 4.0 Published: May 28, 2009 (v4.03: June 14, 2010) U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES National Institutes of Health National Cancer Institute.Use the "Insert Citation" button to add citations to this document.
  • Wahl RL, Jacene H, Kasamon Y, Lodge MA. From RECIST to PERCIST: Evolving Considerations for PET Response Criteria in Solid Tumors. J Nucl Med. 2009;50(Suppl_1):122S-150S. doi:10.2967/jnumed.108.057307
  • Franzese C, Francolini G, Nicosia L, Alongi F, Livi L, Scorsetti M. Stereotactic Body Radiation Therapy in the Management of Oligometastatic and Oligoprogressive Bladder Cancer and Other Urothelial Malignancies. Clin Oncol (R Coll Radiol). 2021 Jan;33(1):50-56. doi: 10.1016/j.clon.2020.07.008. Epub 2020 Jul 25. PMID: 32723486
  • Shaverdian N, Lisberg AE, Bornazyan K, Veruttipong D, Goldman JW, Formenti SC, Garon EB, Lee P. Previous radiotherapy and the clinical activity and toxicity of pembrolizumab in the treatment of non-small-cell lung cancer: a secondary analysis of the KEYNOTE-001 phase 1 trial. Lancet Oncol. 2017 Jul;18(7):895-903. doi: 10.1016/S1470-2045(17)30380-7. Epub 2017 May 24. Erratum in: Lancet Oncol. 2017 Jul;18(7):e371. PMID: 28551359; PMCID: PMC5538772
  • Gomez DR, Tang C, Zhang J, Blumenschein GR Jr, Hernandez M, Lee JJ, Ye R, Palma DA, Louie AV, Camidge DR, Doebele RC, Skoulidis F, Gaspar LE, Welsh JW, Gibbons DL, Karam JA, Kavanagh BD, Tsao AS, Sepesi B, Swisher SG, Heymach JV. Local Consolidative Therapy Vs. Maintenance Therapy or Observation for Patients With Oligometastatic Non-Small-Cell Lung Cancer: Long-Term Results of a Multi-Institutional, Phase II, Randomized Study. J Clin Oncol. 2019 Jun 20;37(18):1558-1565. doi: 10.1200/JCO.19.00201. Epub 2019 May 8. PMID: 31067138; PMCID: PMC6599408.
  • Palma DA, Olson R, Harrow S, Gaede S, Louie AV, Haasbeek C, Mulroy L, Lock M, Rodrigues GB, Yaremko BP, Schellenberg D, Ahmad B, Senthi S, Swaminath A, Kopek N, Liu M, Moore K, Currie S, Schlijper R, Bauman GS, Laba J, Qu XM, Warner A, Senan S. Stereotactic Ablative Radiotherapy for the Comprehensive Treatment of Oligometastatic Cancers: Long-Term Results of the SABR-COMET Phase II Randomized Trial. J Clin Oncol. 2020 Sep 1;38(25):2830-2838. doi: 10.1200/JCO.20.00818. Epub 2020 Jun 2. PMID: 32484754; PMCID: PMC7460150
  • Dewan MZ, Galloway AE, Kawashima N, Dewyngaert JK, Babb JS, Formenti SC, Demaria S. Fractionated but not single-dose radiotherapy induces an immune-mediated abscopal effect when combined with anti-CTLA-4 antibody. Clin Cancer Res. 2009 Sep 1;15(17):5379-88. doi: 10.1158/1078-0432.CCR-09-0265. Epub 2009 Aug 25. PMID: 19706802; PMCID: PMC2746048
  • Powles T, Valderrama BP, Gupta S, Bedke J, Kikuchi E, Hoffman-Censits J, Iyer G, Vulsteke C, Park SH, Shin SJ, Castellano D, Fornarini G, Li JR, Gümüş M, Mar N, Loriot Y, Fléchon A, Duran I, Drakaki A, Narayanan S, Yu X, Gorla S, Homet Moreno B, van der Heijden MS; EV-302 Trial Investigators. Enfortumab Vedotin and Pembrolizumab in Untreated Advanced Urothelial Cancer. N Engl J Med. 2024 Mar 7;390(10):875-888. doi: 10.1056/NEJMoa2312117. PMID: 38446675
  • Powles T, Park SH, Voog E, Caserta C, Valderrama BP, Gurney H, Kalofonos H, Radulović S, Demey W, Ullén A, Loriot Y, Sridhar SS, Tsuchiya N, Kopyltsov E, Sternberg CN, Bellmunt J, Aragon-Ching JB, Petrylak DP, Laliberte R, Wang J, Huang B, Davis C, Fowst C, Costa N, Blake-Haskins JA, di Pietro A, Grivas P. Avelumab Maintenance Therapy for Advanced or Metastatic Urothelial Carcinoma. N Engl J Med. 2020 Sep 24;383(13):1218-1230. doi: 10.1056/NEJMoa2002788. Epub 2020 Sep 18. PMID: 32945632.
  • Liang F, Zhu J. Pembrolizumab for Advanced Urothelial Carcinoma. N Engl J Med. 2017 Jun 8;376(23):2302. doi: 10.1056/NEJMc1704612. PMID: 28591524.
  • Von der Maase H, Hansen SW, Roberts JT, Dogliotti L, Oliver T, Moore MJ, Bodrogi I, Albers P, Knuth A, Lippert CM, Kerbrat P, Sanchez Rovira P, Wersall P, Cleall SP, Roychowdhury DF, Tomlin I, Visseren-Grul CM, Conte PF. Gemcitabine and cisplatin versus methotrexate, vinblastine, doxorubicin, and cisplatin in advanced or metastatic bladder cancer: results of a large, randomized, multinational, multicenter, phase III study. J Clin Oncol. 2000 Sep;18(17):3068-77. doi: 10.1200/JCO.2000.18.17.3068. PMID: 11001674
  • Roberts JT, von der Maase H, Sengeløv L, Conte PF, Dogliotti L, Oliver T, Moore MJ, Zimmermann A, Arning M. Long-term survival results of a randomized trial comparing gemcitabine/cisplatin and methotrexate/vinblastine/doxorubicin/cisplatin in patients with locally advanced and metastatic bladder cancer. Ann Oncol. 2006 May;17 Suppl 5:v118-22. doi: 10.1093/annonc/mdj965. Retraction in: Ann Oncol. 2011 Nov;22(11):2536. PMID: 16807438.
  • Bellmunt J, Orsola A, Leow JJ, Wiegel T, De Santis M, Horwich A; ESMO Guidelines Working Group. Bladder cancer: ESMO Practice Guidelines for diagnosis, treatment and follow-up. Ann Oncol. 2014 Sep;25 Suppl 3:iii40-8. doi: 10.1093/annonc/mdu223. Epub 2014 Aug 5. PMID: 25096609
  • Torre LA, Bray F, Siegel RL, Ferlay J, Lortet-Tieulent J, Jemal A. Global cancer statistics, 2012. CA Cancer J Clin. 2015 Mar;65(2):87-108. doi: 10.3322/caac.21262. Epub 2015 Feb 4. PMID: 25651787

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

February 16, 2026

Primary Completion (Estimated)

February 1, 2030

Study Completion (Estimated)

February 1, 2030

Study Registration Dates

First Submitted

February 2, 2026

First Submitted That Met QC Criteria

February 9, 2026

First Posted (Actual)

February 17, 2026

Study Record Updates

Last Update Posted (Actual)

April 30, 2026

Last Update Submitted That Met QC Criteria

April 24, 2026

Last Verified

February 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • ASTRA

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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