Stereotactic Pelvic Adjuvant Radiation Therapy in Cancers of the Uterus II (SPARTACUSII)
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The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT04890912 |
Recruitment Status :
Recruiting
First Posted : May 18, 2021
Last Update Posted : October 25, 2021
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Condition or disease | Intervention/treatment | Phase |
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Endometrial Cancer | Radiation: Conventional Fractionation Radiation: Hypofractionation | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 50 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | Stereotactic Pelvic Adjuvant Radiation Therapy in Cancers of the Uterus II: A Phase II Randomized Controlled Trial |
Actual Study Start Date : | July 15, 2021 |
Estimated Primary Completion Date : | June 1, 2022 |
Estimated Study Completion Date : | June 1, 2023 |

Arm | Intervention/treatment |
---|---|
Active Comparator: Conventional Fractionation Pelvic Radiation
Patients randomized to the conventional fractionation arm will be treated with intensity-modulated or volumetric arc therapy technique as per standard protocol.
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Radiation: Conventional Fractionation
Dose prescribed is 45 Gy in 25 fractions (1.8 Gy per fraction) delivered daily over 5 weeks. |
Experimental: Stereotactic Hypofractionated Radiation
Patients randomized to hypofractionation will be treated the stereotactic hypofractionated technique.
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Radiation: Hypofractionation
Dose prescribed is 30 Gy in 5 fractions (6 Gy per fraction) delivered every other day over 11 days. There will be a minimum of 36 hours and maximum of 96 hours between fractions. The entire course of treatment should be completed within no less than 10 days. |
- Acute bowel toxicity [ Time Frame: Baseline to 2 years following RT completion ]To compare the acute bowel toxicities associated with hypofractionated vs conventional adjuvant pelvic radiation as measured by the The Expanded Prostate Cancer Index Composite (EPIC) questionnaire.
- Acute bowel toxicities [ Time Frame: Baseline to 2 years following RT completion ]To compare the acute bowel toxicities associated with hypofractionated treatment and conventional fractionation in adjuvant pelvic radiation for endometrial cancers using the Common Terminology Criteria for Adverse Events (CTCAE v5.0) criteria.
- Acute urinary toxicities through CTCAE [ Time Frame: Baseline to 2 years following RT completion ]To compare the acute urinary toxicities associated with hypofractionated treatment and conventional fractionation in adjuvant pelvic radiation for endometrial cancers using the Common Terminology Criteria for Adverse Events (CTCAE v5.0) criteria.
- Acute urinary toxicities through EPIC [ Time Frame: Baseline to 2 years following RT completion ]To compare the acute urinary toxicities associated with hypofractionated treatment and conventional fractionation in adjuvant pelvic radiation for uterine cancer as measured by EPIC.
- Local- regional failure [ Time Frame: Baseline to 2 years following RT completion ]To compare presence of tumour through physical exam or radiologic imaging between hypofractionated treatment and conventional fractionation.
- Disease-free survival [ Time Frame: Baseline to 2 years following RT completion ]To compare disease-free survival of hypofractionated treatment and conventional fractionation
- Quality of life using EORTC QLQ-30 and endometrial module (EN-24) [ Time Frame: Baseline to 2 years following RT completion ]To compare the effect of hypofractionated treatment and conventional fractionation on quality of life using the using EORTC (European Organisation for Research and Treatment of Cancer) core questionnaire (QLQ-C30) with EN-24 companion.
- Correlation of GU toxicity, EORTC, and EPIC [ Time Frame: Baseline to 2 years following RT completion ]To measure correlations between GU toxicity and EORTC questionnaire versus GU toxicity and EPIC questionnaire.

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | Female |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Patient with histologically confirmed endometrial adenocarcinoma, serous or clear cell carcinoma.
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Patient is a candidate for adjuvant pelvic radiation for uterine cancer (+/- vault brachytherapy), meeting one of the following conditions:
High grade histology (including serous and clear cell) OR Outer-half myometrial invasion and International Federation of Gynecology and Obstetrics (FIGO) grade 1-2 OR FIGO stage II - III.
- Patients who are to receive adjuvant systemic therapy sequentially in addition to pelvic radiotherapy will be eligible.
- Age ≥18 years.
- Patient is willing and able to give informed consent to participate in this clinical trial.
Exclusion Criteria:
- Patient has had prior pelvic radiotherapy.
- Patient has a contraindication to pelvic radiotherapy, such as but not limited to a connective tissue disease or inflammatory bowel disease.
- Patient planned for concurrent chemoradiation therapy.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04890912
Contact: Anika Mohan | 416-480-5000 ext 89828 | anika.mohan@sunnybrook.ca | |
Contact: Nithla Mohanathas | 416-480-5000 ext 85838 | nithla.mohanathas@sunnybrook.ca |
Canada, Ontario | |
Royal Victoria Hospital | Not yet recruiting |
Barrie, Ontario, Canada, L4M 6M2 | |
Contact: Adam Gladwish, MD gladwisha@rvh.on.ca | |
Principal Investigator: Adam Gladwish, MD | |
Sub-Investigator: Julia Skliarenko, MD | |
London Regional Cancer Program | Not yet recruiting |
London, Ontario, Canada, N6A 5W9 | |
Contact: David D'Souza, MD david.dsouza@lhsc.on.ca | |
Sub-Investigator: David D'Souza, MD | |
Sub-Investigator: Lucas Mendez, MD | |
Sub-Investigator: Vikram Velker, MD | |
Credit Valley Hospital | Not yet recruiting |
Mississauga, Ontario, Canada, L5M 2N1 | |
Contact: Jasper Yuen, MD jyuen@cvh.on.ca | |
Sub-Investigator: Jasper Yuen, MD | |
Sunnybrook Health Sciences Centre | Recruiting |
Toronto, Ontario, Canada, M4N 3M5 | |
Contact: Anika Mohan anika.mohan@sunnybrook.ca | |
Principal Investigator: Eric Leung, MD | |
Sub-Investigator: Elizabeth Barnes, MD | |
Sub-Investigator: Amandeep Taggar, MD | |
Sub-Investigator: Melanie Davidson, MD | |
Sub-Investigator: Andrew Loblaw, MD | |
Sub-Investigator: Elysia Donovan, MD | |
Sub-Investigator: Patrick Cheung, MD | |
Princess Margaret Cancer Centre | Not yet recruiting |
Toronto, Ontario, Canada, M5G 2C1 | |
Contact: Kathy Han, MD kathy.han@rmp.uhn.ca | |
Principal Investigator: Kathy Han, MD |
Principal Investigator: | Eric Leung, MD | Sunnybrook Health Sciences Centre | |
Principal Investigator: | Kathy Han, MD | Princess Margaret Cancer Centre | |
Principal Investigator: | Adam Gladwish, MD | Royal Victoria Hospital |
Responsible Party: | Dr. Eric Leung, Principal Investigator, Sunnybrook Health Sciences Centre |
ClinicalTrials.gov Identifier: | NCT04890912 |
Other Study ID Numbers: |
SPARTACUS II |
First Posted: | May 18, 2021 Key Record Dates |
Last Update Posted: | October 25, 2021 |
Last Verified: | October 2021 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
endometrial cancer uterine cancer |
Endometrial Neoplasms Uterine Neoplasms Genital Neoplasms, Female Urogenital Neoplasms |
Neoplasms by Site Neoplasms Uterine Diseases |