Endometrial CancerPhase 2NCT05640999
Adjuvant Therapy in POLE-Mutated and p53-Wildtype/NSMP Early Stage Endometrial Cancer RAINBO BLUE & TAPER
A Phase 2 study testing Vaginal brachytherapy, Adjuvant radiotherapy (EBRT +/- brachytherapy) and Observation in people with Endometrial Cancer, run by Canadian Cancer Trials Group at 123 sites in 9 countries.
Trial summary
This protocol tests de-escalated adjuvant treatment in patients with POLE-mutated or p53wt/NSMP (p53 wildtype/no specific molecular profile) early-stage endometrial cancer (EC). Patients may be enrolled in one of two sub-studies EN10.A/RAINBO BLUE: POLE-mutated EC EN10.B/TAPER: p53 wildtype / NSMP EC Read more about this study
- Who is it for?
- Ages 18 years and older, women only
- Conditions the study is for
- Endometrial Cancer
- What is being tested?
- Vaginal brachytherapy, Adjuvant radiotherapy (EBRT +/- brachytherapy) and Observation
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 393 participants
- Where
- 123 sitesin 9 countries
- Study dates
- 19 Dec 2022to 30 Jun 2029
- 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
- Women only
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patients must have had surgery consisting of hysterectomy and bilateral salpingo-oophorectomy. Lymph node dissection can be performed as per institutional standards. There must be no macroscopic residual disease after surgery.
- Patients must have histologically confirmed Stage I to III endometrial carcinoma which can be endometrioid, serous, clear cell, un/dedifferentiated, carcinosarcoma or mixed.
- Patients' Eastern Cooperative Group (ECOG) performance status must be 0, 1, or 2.
- HIV-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months are eligible for this trial.
- Patients' age must be ≥ 18 years.
- Patient consent must be appropriately obtained in accordance with applicable local and regulatory requirements.
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- Patient is able (i.e. sufficiently fluent) and willing to complete the patient-reported outcomes (PRO) questionnaires in either English, French or a validated language
- Patients must be accessible for treatment and follow-up. Patients enrolled on this trial must be treated and followed at the participating centre
- Protocol treatment is to begin within 10 weeks of hysterectomy/bilateral salpingo-oophorectomy
Who cannot join
- Prior Neoadjuvant chemotherapy for current endometrial cancer diagnosis.
- Prior pelvic radiation.
- Patients with a history of other malignancies, except: carcinoma in-situ without evidence of invasive disease when resected, adequately treated non-melanoma skin cancer, or other tumours curatively treated with no evidence of disease for ≥ 5 years.
- Clinical evidence of distant metastasis as determined by pre-surgical or post-surgical imaging (CT scan of chest, abdomen and pelvis or whole-body PET-CT scan)
- Patients with a documented positive surgical margin.
- Patients with a documented positive peritoneal washings, if performed.
Trial locations and contacts
123 sites in 9 countries. Contact the study team or a site near you to ask about taking part.
123 sites in 9 countries
United States77 sites, 77 recruiting
- Recruiting
Alaska Womens Cancer Care
Anchorage, Alaska, 99508
Melissa Hardesty, 907-212-6871
- Recruiting
Grady Health System
Atlanta, Georgia, 30303
Jill Remick, 404-778-1900
- Recruiting
Emory University Hospital Midtown
Atlanta, Georgia, 30308
Jill Remick, 404-778-1900
- Recruiting
Piedmont Hospital
Atlanta, Georgia, 30309
Leda Gattoc
- Recruiting
Emory University Hospital Winship Cancer Institute
Atlanta, Georgia, 30322
Jill Remick, 404-778-1900
- Recruiting
Emory Saint Josephs Hospital
Atlanta, Georgia, 30342
Jill Remick, 404-778-1900
- Recruiting
UCHealth University of Colorado Hospital
Aurora, Colorado, 80045
Bradley Corr
- Recruiting
UHHS-Chagrin Highlands Medical Center
Beachwood, Ohio, 44122
Sarah Lynam, 216-844-3954
- Recruiting
Massachusetts General Hospital Cancer Center
Boston, Massachusetts, 02114
Andrea Russo, 617-726-7941
- Recruiting
Roswell Park Cancer Institute
Buffalo, New York, 14263
Emese Zsiros, 716-845-8337
- Recruiting
University of Vermont Medical Center
Burlington, Vermont, 05401
Puyao Li, 802-656-8990
- Recruiting
University of Vermont and State Agricultural College
Burlington, Vermont, 05405
Puyao Li, 802-656-8990
- Recruiting
UNC Lineberger Comprehensive Cancer Center
Chapel Hill, North Carolina, 27599
Olivia Lara, 877-668-0683
- Recruiting
Geauga Hospital
Chardon, Ohio, 44024
Sarah Lynam, 216-844-3954
- Recruiting
University of Virginia Cancer Center
Charlottesville, Virginia, 22908
Kara Romano, 434-924-5191
- Recruiting
Northwestern University
Chicago, Illinois, 60611
Dario Roque, 312-695-0990
- Recruiting
Case Western Reserve University
Cleveland, Ohio, 44106
Sarah Lynam, 216-844-3954
- Recruiting
Ohio State University Comprehensive
Columbus, Ohio, 43210
Casey Cosgrove
- Recruiting
Mercy Hospital
Coon Rapids, Minnesota, 55433
Annie Tan, 952-993-1517
- Recruiting
Emory Decatur Hospital
Decatur, Georgia, 30033
Jill Remick, 404-778-1900
- Recruiting
UM Sylvester Comprehensive Cancer Center at
Deerfield Beach, Florida, 33442
Joseph Pearson
- Recruiting
AdventHealth Porter
Denver, Colorado, 80210
Neil Phippen
- Recruiting
UM Sylvester Comprehensive Cancer Center at Doral
Doral, Florida, 33166
Joseph Pearson
- Recruiting
Duke University Medical Center
Durham, North Carolina, 27710
Angeles Secord
- Recruiting
Farmington Health Centre
Farmington, Utah, 84025
Cristina DeCesaris
- Recruiting
University of Florida
Gainesville, Florida, 32610-0277
Danielle Cerbon, 352-265-0287
- Recruiting
Saint Vincent Hospital Cancer Center Green Bay
Green Bay, Wisconsin, 54301
Matthew Ryan, 920-884-3135
- Recruiting
Penn State Milton S Hershey Medical Center
Hershey, Pennsylvania, 17033
Shaina Bruce, 717-531-3779
- Recruiting
M.D. Anderson Cancer Center
Houston, Texas, 77030
Ann Klopp, 713-563-2444
- Recruiting
Ascension Saint Vincent Indianapolis Hospital
Indianapolis, Indiana, 46260
Megan Buechel, 317-415-6740
- Recruiting
Womens Cancer Center of Nevada
Las Vegas, Nevada, 89106
Nicola Spirtos, 702-851-4672
- Recruiting
Cedars-Sinai Medical Center
Los Angeles, California, 90048
Emily Prendergast, 310-423-5246
- Recruiting
Norton Hospital Pavilion and Medical Campus
Louisville, Kentucky, 40202
Monica Vetter, 502-899-3366
- Recruiting
Norton Suburban Hospital and Medical Campus
Louisville, Kentucky, 40207
Monica Vetter, 502-899-3366
- Recruiting
UH Seidman Cancer Center
Mentor, Ohio, 44060
Sarah Lynam, 216-844-3954
- Recruiting
University of Miami School of Medicine
Miami, Florida, 33136
Joseph Pearson
- Recruiting
Medical College of Wisconsin
Milwaukee, Wisconsin, 53226
William Bradley, 414-805-6600
- Recruiting
Sarasota Memorial Hospital - Venice
N. Venice, Florida, 34275
Beverly Long, 941-917-2225
- Recruiting
University Medical Center New Orleans
New Orleans, Louisiana, 70112
Tara Castellano, 504-210-3539
- Recruiting
Mount Sinai Chelsea
New York, New York, 10011
Caitlin Carr, 212-824-7309
- Recruiting
Mount Sinai Hospital
New York, New York, 10029
Caitlin Carr, 212-824-7309
- Recruiting
University of Miami Sylvester
North Miami, Florida, 33181
Joseph Pearson
- Recruiting
University of Oklahoma Health Sciences Center
Oklahoma City, Oklahoma, 73104
Christina Washington, 405-271-8777
- Recruiting
Nebraska Methodist Hospital
Omaha, Nebraska, 68114
Brent Tierney, 402-354-5144
- Recruiting
Northwestern Medicine Orland Park
Orland Park, Illinois, 60462
Dario Roque, 312-695-0990
- Recruiting
Upstate Cancer Center Radiation Oncology at Oswego
Oswego, New York, 13126
Mary Cunningham, 315-634-4112
- Recruiting
Paoli Memorial Hospital
Paoli, Pennsylvania, 19301
Paul Gilman, 484-476-2649
- Recruiting
University Hospitals Parma Medical Center
Parma, Ohio, 44129
Sarah Lynam, 216-844-3954
- Recruiting
Huntington Memorial Hospital
Pasadena, California, 91105
Emily Prendergast, 310-423-5246
- Recruiting
Thomas Jefferson University
Philadelphia, Pennsylvania, 19107
Mitchell Edelson, 215-481-4000
- Recruiting
UM Sylvester Comprehensive Cancer Center
Plantation, Florida, 33324
Joseph Pearson
- Recruiting
Providence Portland Medical Centre
Portland, Oregon, 97213
Alison Conlin, 503-215-6259
- Recruiting
Providence Saint Vincent Medical Center
Portland, Oregon, 97225
Alison Conlin, 503-215-6259
- Recruiting
Women and Infants Hospital
Providence, Rhode Island, 02905
Matthew Oliver, 401-274-1122 ext. 48181
- Recruiting
Duke Womens Cancer Care Raleigh
Raleigh, North Carolina, 27607
Angeles Secord
- Recruiting
Virginia Commonwealth University
Richmond, Virginia, 23298
Emma Fields
- Recruiting
Sutter Medical Center Sacramento
Sacramento, California, 95816
Anna Likhacheva
- Recruiting
University of Utah Sugarhouse Health Centre
Salt Lake City, Utah, 84106
Cristina DeCesaris
- Recruiting
Huntsman Cancer Institute University of Utah
Salt Lake City, Utah, 84112
Cristina DeCesaris
- Recruiting
Florida Cancer Specialists - Sarasota Downtown
Sarasota, Florida, 34236
Beverly Long, 941-917-2225
- Recruiting
First Physicians Group-Sarasota
Sarasota, Florida, 34239
Beverly Long, 941-917-2225
- Recruiting
Sarasota Memorial Hospital
Sarasota, Florida, 34239
Beverly Long, 941-917-2225
- Recruiting
Sarasota Memorial Health Care Centre
Sarasota, Florida, 34243
Beverly Long, 941-917-2225
- Recruiting
Swedish Medical Center First Hill
Seattle, Washington, 98122
Charles Drescher, 206-991-2000
- Recruiting
Sidney Kimmel Cancer Center Washington Township
Sewell, New Jersey, 08080
Mitchell Edelson, 215-481-4000
- Recruiting
Baystate Medical Center
Springfield, Massachusetts, 01199
Tashanna Myers, 413-974-3565
- Recruiting
Washington University School of Medicine
St Louis, Missouri, 63110
Premal Thaker, 314-747-3604
- Recruiting
State University of New York
Syracuse, New York, 13210
Mary Cunningham, 315-634-4112
- Recruiting
Upstate Cancer Center at Hill Radiation Oncology
Syracuse, New York, 13210
Mary Cunningham, 315-634-4112
- Recruiting
University of Arizona Cancer Center
Tucson, Arizona, 85719
Marina Miller
- Recruiting
Florida Cancer Specialists - Venice Pinebrook
Venice, Florida, 34275
Beverly Long, 941-917-2225
- Recruiting
Upstate Cancer Center at Verona
Verona, New York, 13478
Mary Cunningham, 315-634-4112
- Recruiting
Northwestern Medicine Cancer Center Warrenville
Warrenville, Illinois, 60555
Dario Roque, 312-695-0990
- Recruiting
UH Seidman Cancer Center
Westlake, Ohio, 44145
Sarah Lynam, 216-844-3954
- Recruiting
Asplundh Cancer Pavilion
Willow Grove, Pennsylvania, 19090
Mitchell Edelson, 215-481-4000
- Recruiting
UMass Memorial Medical Centre
Worcester, Massachusetts, 01605
Susan Zweizig, 508-856-6265
- Recruiting
Lankenau Medical Center
Wynnewood, Pennsylvania, 19096
Paul Gilman, 484-476-2649
Canada15 sites, 15 recruiting
- Recruiting
Royal Victoria Regional Health Centre
Barrie, Ontario, L4M 6M2
Jessica Conway, 705 728-9090
- Recruiting
Arthur J.E. Child Comprehensive Cancer Centre
Calgary, Alberta, T2N 5G2
Ruth Fullerton, 403 521-3095
- Recruiting
Cross Cancer Institute
Edmonton, Alberta, T6G 1Z2
Fleur Huang, 780 432-8516
- Recruiting
Juravinski Cancer Centre at Hamilton Health Sciences
Hamilton, Ontario, L8V 5C2
Clare Reade, 905 389-5688
- Recruiting
BCCA - Kelowna
Kelowna, British Columbia, V1Y 5L3
Hamid Raziee
- Recruiting
London Health Sciences Centre Research Inc.
London, Ontario, N6A 5W9
Lucas Mendez, 519 685-8600 ext. 53169
- Recruiting
Trillium Health Partners - Credit Valley Hospital
Mississauga, Ontario, L5M 2N1
Katherine Pulman, 905 813-1100 ext. 1841
- Recruiting
CHUM-Centre Hospitalier de l'Universite de Montreal
Montreal, Quebec, H2X 3E4
Maroie Barkati, 514 890-8254
- Recruiting
The Jewish General Hospital
Montreal, Quebec, H3T 1E2
Susie K.S. Lau, 514 340-8222 ext. 3114
- Recruiting
BCCA - Prince George
Prince George, British Columbia, V2M 7E9
Allison Ye, 250 645-7300
- Recruiting
CIUSSS de l'Estrie - Centre hospitalier
Sherbrooke, Quebec, J1H 5N4
Mathieu Viau
- Recruiting
Odette Cancer Centre
Toronto, Ontario, M4N 3M5
Helen MacKay, 416 480-5145
- Recruiting
University Health Network
Toronto, Ontario, M5G 2M9
Kathy Han, 416 946-4501 ext. 2919
- Recruiting
BCCA - Vancouver
Vancouver, British Columbia, V5Z 4E6
Jessica McAlpine, 604 877-6000 ext. 2395
- Recruiting
BCCA - Victoria
Victoria, British Columbia, V8R 6V5
Caroline Holloway, 250 519-5609
Australia11 sites, 11 recruiting
- Recruiting
Monash Medical Centre
Clayton, Victoria, 3168
Shih-Ern Yao, 39 594-6666
- Recruiting
Royal Darwin Hospital
Darwin, Tiwi, 0810
Michelle Harris
- Recruiting
Frankston Hospital
Frankston, Victoria, 3199
Yoland Antill
- Recruiting
Canberra Hospital
Garran, ACT 2605
Andrew Douglas Lee
- Recruiting
Royal Brisbane and Womens Hospital
Herston, 4029
Andrea Garrett, 73 646-8111
- Recruiting
South Western Sydney Local Health District
Liverpool, New South Wales, 2170
Viet Do
- Recruiting
The Royal Women's Hospital
Parkville, Victoria, 3053
Orla McNally, 613 834-5356 ext. 2
- Recruiting
Mater Research Institute South Brisbane
South Brisbane, Queensland, 4101
Nimithri Cabraal
- Recruiting
Royal North Shore Hospital
St Leonards, New South Wales, 2065
Marita Morgia, 2 946-3130
- Recruiting
Calvary Mater Newcastle Hospital
Waratah, New South Wales, 2298
Geetha Govindarajulu
- Recruiting
Westmead Hospital
Westmead, New South Wales, 2145
Alison Brand
Netherlands6 sites, 6 recruiting
- Recruiting
Radiotherapiegroep
Arnhem, Gelderland, 6815AD
Dorien Haverkort, 318 877-9000
- Recruiting
Catharina ziekenhuis
Eindhoven, North Brabant, 5623 EJ
Bastiaan Wortman, 40 239-9111
- Recruiting
Leiden University Medical Center (LUMC)
Leiden, 2333ZA
Stephanie De Boer
- Recruiting
Maastro clinic (Maastricht UMC)
Maastricht, Limburg, 6229ET
Nienke Kuijsters, 31 088-4456 ext. 0
- Recruiting
Erasmus Medical Center (EMC)
Rotterdam
Henrieke Westerveld
- Recruiting
MC Haaglanden
The Hague, South Holland, 432
Mandy Kiderlen, 3 889-7979
France5 sites, 5 recruiting
- Recruiting
Centre Oscar Lambret
Lille, Nord, 59000
Abel Cardoba Largo
- Recruiting
Centre Leon Berard
Lyon, Auvergne-Rhône-Alpes, 69008
Olivia Le Saux, 47 878-2828
- Recruiting
Groupe Hospitalier Diaconesses Croix Saint-Simon
Paris, 75012
Frederic Selle, 33 144-6437
- Recruiting
Institut Universitaire du Cancer de Toulouse - IUCT
Toulouse, Occitanie, 31100
Laurence Gladieff
- Recruiting
Institut Gustave-Roussy
Villejuif, FR, 94805
Alexandra Leary, 33 142-1142 ext. 11
Italy5 sites, 5 recruiting
- Recruiting
ASST Spedali Civili Brescia
Brescia, 25123
Germana Tognon
- Recruiting
Policliico Careggi
Florence, Florence, 50134
Maria Cristina Petrella
- Recruiting
ASST Lecco
Lecco, 23900
Romerai D'Amico
- Recruiting
European Institute of Oncology
Milan, 20141
Ilaria Betella, 39 025-7489
- Recruiting
Policlinico Umberto I, Universita Sapienza
Rome, 00161
Federica Tomao
New Zealand2 sites, 2 recruiting
- Recruiting
Auckland City Hospital
Auckland, 1023
Ruth Angell
- Recruiting
Christchurch Hospital
Christchurch, 8140
Bryony Simcock
Germany1 site, 1 recruiting
- Recruiting
Diak Klinikum Landkreis Schwaebisch Hall
Schwäbisch Hall, Baden-Wurttemberg, 74523
Stefan Kommoss
Norway1 site, 1 recruiting
- Recruiting
Oslo University Hospital
Oslo, Ullernchausseen 70, 0379
Kristina Lindemann, 2 293-4983
About this study
Official title: A Phase II Study of Tailored Adjuvant Therapy in POLE-Mutated and p53-Wildtype/NSMP Early Stage Endormetrial Cancer (RAINBO BLUE & TAPER)
This protocol tests de-escalated adjuvant treatment in patients with POLE-mutated or p53wt/NSMP (p53 wildtype/no specific molecular profile) early-stage endometrial cancer (EC). Patients may be enrolled in one of two sub-studies
- EN10.A/RAINBO BLUE: POLE-mutated EC
- EN10.B/TAPER: p53 wildtype / NSMP EC
Read the detailed description
This study is being done in order to find out if this new approach is better or worse than the usual approach for early-stage endometrial cancer. The usual approach is defined as the care most people get for early-stage endometrial cancer.
The usual approach for patients who are not in a study is treatment with surgery. Tissue that is removed as part of this procedure is analyzed in the pathology laboratory to guide the doctor to decide whether or not additional treatment such as radiation and or chemotherapy should be recommended.
- Conditions
- Endometrial Cancer
- Being tested
- Vaginal brachytherapy, Adjuvant radiotherapy (EBRT +/- brachytherapy), Observation
- Medical subject headings
- Endometrial Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Vaginal brachytherapyRadiation
Vaginal brachytherapy should be delivered using a vaginal cylinder, or alternatively ovoids
Adjuvant radiotherapy (EBRT +/- brachytherapy)Radiation
Treatment is to be delivered using 4-18 MV photons. MV, kV or CBCT imaging capabilities are required. Planning systems with capability for DICOM data transfer must be used.
ObservationOther
Observation
| Study group | Role | What they receive |
|---|---|---|
| Sub-study A: RAINBO BLUE Cohort A1 | Experimental | Observation Receives: Other: Observation |
| Sub-Study A: RAINBO BLUE Cohort A2 | Experimental | Observation or Adjuvant Radiotherapy Receives: Radiation: Adjuvant radiotherapy (EBRT +/- brachytherapy); Other: Observation |
| Sub-Study B: TAPER | Experimental | Observation or Vaginal Brachytherapy Receives: Radiation: Vaginal brachytherapy; Other: Observation |
What is being measured
The primary outcome is the main question the study is designed to answer.
Estimate the rate of pelvic recurrence at 3 years in patients who are treated with de-escalated adjuvant treatment directed by tumour molecular status
Measured: 3 years
Secondary outcomes (7)
Estimate the rate of isolated vaginal recurrence at 3 years
Measured: 3 years
Estimate the rate of para-aortic recurrence at 3 years
Measured: 3 years
Estimate the rate of distant metastasis at 3 years
Measured: 3 years
Estimate recurrence-free survival
Measured: 9 years
Estimate endometrial cancer-specific survival
Measured: 9 years
Estimate overall survival
Measured: 9 years
Describe the impact of molecular classification on fear of recurrence by Fear of Recurrence Inventory
Measured: 9 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Dec 2022
- Study start19 Dec 2022
- Primary completion31 Dec 2028 (estimated)
- Study completion30 Jun 2029 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Endometrial CancerStudies of the same condition, open and under way.
- More trials run by Canadian Cancer Trials GroupThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 393 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Canadian Cancer Trials Group
- Sponsor type
- Research network
- Collaborators
- Canadian Cancer Clinical Trials Network, Australia New Zealand Gynaecological Oncology Group, Gustave Roussy, Cancer Campus, Grand Paris, Leiden University Medical Center, Mario Negri Gynecologic Oncology group (MaNGO), NRG Oncology, Philipps University Marburg, University College, London
- Responsible party
- Sponsor
- Investigators
- Kathy Han, Study chair, University Health Network, Princess Margaret Hospital, Toronto ON CanadaJessica McAlpine, Study chair, BCCA-Vancouver Cancer Centre, Vancouver BC Canada
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05640999
- Sponsor's protocol ID
- EN10
- Other IDs
- NRG-GY032
- Status last verified
- Aug 2026
- First submitted
- 29 Nov 2022
- Last updated
- 14 Oct 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 14 Oct 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase II Study of Tailored Adjuvant Therapy in POLE-Mutated and p53-Wildtype/NSMP Early Stage Endormetrial Cancer (RAINBO BLUE & TAPER)
- ClinicalTrials.gov ID
- NCT05640999
- Acronym / sponsor ID
- EN10
- Conditions
- Endometrial Cancer
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 393 participants (estimated)
- Lead sponsor
- Canadian Cancer Trials GroupResearch network
- Collaborators
- Canadian Cancer Clinical Trials Network, Australia New Zealand Gynaecological Oncology Group, Gustave Roussy, Cancer Campus, Grand Paris, Leiden University Medical Center, Mario Negri Gynecologic Oncology group (MaNGO), NRG Oncology, Philipps University Marburg, University College, London
- Study start
- 19 Dec 2022 (actual)
- Primary completion
- 31 Dec 2028 (estimated)
- Study completion
- 30 Jun 2029 (estimated)
- First posted
- 7 Dec 2022 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This protocol tests de-escalated adjuvant treatment in patients with POLE-mutated or p53wt/NSMP (p53 wildtype/no specific molecular profile) early-stage endometrial cancer (EC). Patients may be enrolled in one of two sub-studies
- EN10.A/RAINBO BLUE: POLE-mutated EC
- EN10.B/TAPER: p53 wildtype / NSMP EC
Detailed description
This study is being done in order to find out if this new approach is better or worse than the usual approach for early-stage endometrial cancer. The usual approach is defined as the care most people get for early-stage endometrial cancer.
The usual approach for patients who are not in a study is treatment with surgery. Tissue that is removed as part of this procedure is analyzed in the pathology laboratory to guide the doctor to decide whether or not additional treatment such as radiation and or chemotherapy should be recommended.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Sub-study A: RAINBO BLUE Cohort A1 | Experimental | Other: ObservationObservation |
| Sub-Study A: RAINBO BLUE Cohort A2 | Experimental | Radiation: Adjuvant radiotherapy (EBRT +/- brachytherapy), Other: ObservationObservation or Adjuvant Radiotherapy |
| Sub-Study B: TAPER | Experimental | Radiation: Vaginal brachytherapy, Other: ObservationObservation or Vaginal Brachytherapy |
Who may qualify
- Ages
- 18 years and older
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (9 listed)
- Patients must have had surgery consisting of hysterectomy and bilateral salpingo-oophorectomy. Lymph node dissection can be performed as per institutional standards. There must be no macroscopic residual disease after surgery.
- Patients must have histologically confirmed Stage I to III endometrial carcinoma which can be endometrioid, serous, clear cell, un/dedifferentiated, carcinosarcoma or mixed.
- Patients' Eastern Cooperative Group (ECOG) performance status must be 0, 1, or 2.
- HIV-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months are eligible for this trial.
- Patients' age must be ≥ 18 years.
Key exclusion criteria (6 listed)
- Prior Neoadjuvant chemotherapy for current endometrial cancer diagnosis.
- Prior pelvic radiation.
- Patients with a history of other malignancies, except: carcinoma in-situ without evidence of invasive disease when resected, adequately treated non-melanoma skin cancer, or other tumours curatively treated with no evidence of disease for ≥ 5 years.
- Clinical evidence of distant metastasis as determined by pre-surgical or post-surgical imaging (CT scan of chest, abdomen and pelvis or whole-body PET-CT scan)
- Patients with a documented positive surgical margin.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Vaginal brachytherapyVaginal brachytherapy should be delivered using a vaginal cylinder, or alternatively ovoids | Radiation | Sub-Study B: TAPER |
| Adjuvant radiotherapy (EBRT +/- brachytherapy)Treatment is to be delivered using 4-18 MV photons. MV, kV or CBCT imaging capabilities are required. Planning systems with capability for DICOM data transfer must be used. | Radiation | Sub-Study A: RAINBO BLUE Cohort A2 |
| ObservationObservation | Other | Sub-Study A: RAINBO BLUE Cohort A2, Sub-Study B: TAPER, Sub-study A: RAINBO BLUE Cohort A1 |
Primary outcome
Estimate the rate of pelvic recurrence at 3 years in patients who are treated with de-escalated adjuvant treatment directed by tumour molecular status
Time frame: 3 years
7 secondary outcomes
Estimate the rate of isolated vaginal recurrence at 3 years
Time frame: 3 years
Estimate the rate of para-aortic recurrence at 3 years
Time frame: 3 years
Estimate the rate of distant metastasis at 3 years
Time frame: 3 years
Estimate recurrence-free survival
Time frame: 9 years
Estimate endometrial cancer-specific survival
Time frame: 9 years
Estimate overall survival
Time frame: 9 years
Describe the impact of molecular classification on fear of recurrence by Fear of Recurrence Inventory
Time frame: 9 years
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 14 Oct 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Kathy Han study chair
University Health Network, Princess Margaret Hospital, Toronto ON Canada
Jessica McAlpine study chair
BCCA-Vancouver Cancer Centre, Vancouver BC Canada
123 sites in 9 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Vaginal brachytherapy, Adjuvant radiotherapy (EBRT +/- brachytherapy) and Observation in people with Endometrial Cancer, run by Canadian Cancer Trials Group at 123 sites in 9 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 9 inclusion and 6 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 14 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 123 sites in United States, Canada, Australia, Netherlands, France and 4 more countries. 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 Wendy Parulekar (613-533-6430, wparulekar@ctg.queensu.ca), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Estimate the rate of pelvic recurrence at 3 years in patients who are treated with de-escalated adjuvant treatment directed by tumour molecular status (time frame: 3 years). 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 14 Oct 2026.