No Surgery Trial / Two Dose-escalation Strategies
Morpheus
A Phase III Study Testing Two Dose Escalation Strategies to Increase the Population of Complete Responders After Radiation Therapy in the Context of Organ Preservation for Patients With Rectal Cancer
1 other identifier
interventional
131
2 countries
4
Brief Summary
A randomized study of 131 patients. Patients with a clinical T2-3 N0 rectal cancer will be randomized to two arms (arm A: standard chemoradiation (45 Gy in 25 with concomitant 5-FU or Xeloda chemotherapy) and an external beam boost of 9 Gy compared to arm B: standard chemoradiation (45 Gy in 25 with concomitant 5-FU or Xeloda chemotherapy) and followed by a brachytherapy boost of 30 Gy in 3 fractions).
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_2
Started Apr 2017
Longer than P75 for phase_2
4 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
February 7, 2017
CompletedFirst Posted
Study publicly available on registry
February 13, 2017
CompletedStudy Start
First participant enrolled
April 25, 2017
CompletedPrimary Completion
Last participant's last visit for primary outcome
January 1, 2028
ExpectedStudy Completion
Last participant's last visit for all outcomes
January 1, 2030
February 17, 2026
December 1, 2025
10.7 years
February 7, 2017
February 12, 2026
Conditions
Outcome Measures
Primary Outcomes (1)
TME-free survival
Time from date of randomization to either TME or death in the intention to treat population
2 years post treatment
Secondary Outcomes (4)
Local Recurrence
2 years post treatment
Disease-free survival
5 years post treatment
Overall survival
5 years post treatment
Overall Quality of life
5 years post treatment
Study Arms (2)
Chemoradiation + EBRT Boost
EXPERIMENTALstandard chemoradiation (45 Gy in 25 with concomitant 5-FU or Xeloda chemotherapy) and an external beam boost of 9 Gy in 5; Complete responders and Non-complete responders
Chemoradiation + HDRBT Boost
EXPERIMENTALstandard chemoradiation (45 Gy in 25 with concomitant 5-FU or Xeloda chemotherapy) and followed by a brachytherapy boost of 30 Gy in 3 fractions; Complete responders and Non-complete responders
Interventions
Patients that are complete responders will not have surgery. Patients that are non-complete responders will have surgery.
45 Gy in 25 with concomitant 5-FU or Xeloda chemotherapy) and an external beam boost of 9 Gy in 5
45 Gy in 25 with concomitant 5-FU or Xeloda chemotherapy) and followed by a brachytherapy boost of 30 Gy in 3 fractions
Eligibility Criteria
You may qualify if:
- Rectal cancer patients, clinically staged as T2-T3 by MRI or endoscopic/trans-rectal ultrasound
- Rectal cancer staged as N0 by MRI or EUS/TRUS
- No metastatic lesion
- Rectal tumor occupying less than half of the circumference
- Tumor less than 5 cm on its largest dimension
- Tumor located at less than 10 cm from the anal verge
- Tumor penetration less than 5 mm in the mesorectal fat
- Tumor accessible for brachytherapy
- Lumen accessible for colonoscopy
- Patient should be a suitable candidate for brachytherapy and chemotherapy
- Older than 18 years of age
- Adequate birth control measures in women of childbearing potential
- Written informed consent
You may not qualify if:
- Patients with previous pelvic radiation
- Evidence of distant metastasis
- Extension of malignant disease to the anal canal
- Tumors staged as T4
- Tumors larger than 5 cm in length
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (4)
UT Southwestern Medical Center
Dallas, Texas, 75390, United States
Le Centre Hospitalier de l'Université de Montreal
Montreal, Quebec, H2X0A9, Canada
Jewish General Hospital
Montreal, Quebec, H3T 1E2, Canada
Centre hospitalier universitaire de Québec
Québec, Quebec, G2L2Z3, Canada
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Te Vuong, MD
Sir Mortimer Jewish General Hospital
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Director, Radiation Oncology Department
Study Record Dates
First Submitted
February 7, 2017
First Posted
February 13, 2017
Study Start
April 25, 2017
Primary Completion (Estimated)
January 1, 2028
Study Completion (Estimated)
January 1, 2030
Last Updated
February 17, 2026
Record last verified: 2025-12
Data Sharing
- IPD Sharing
- Will not share