Colorectal CarcinomaPhase 2Hypo-OPRANCT06991465
Organ Preservation in Rectal AdenoCa Using Hypofractionated Pelvic RT(Hypo-OPRA)
A Phase 2 study testing Radiation Therapy, FOLFOX regimen and Capecitabine in people with Colorectal Carcinoma, run by Neil Kopek at 1 site in Canada.
Trial summary
The combination of preoperative pelvic RT - either long-course chemoradiotherapy (LCCRT) or short-course radiotherapy (SCRT)- followed by surgery has been the standard of care in the curative treatment of locally advanced adenocarcinoma of the rectum for decades. Read more about this study
- Who is it for?
- Ages 18 to 90 years
- Conditions the study is for
- Colorectal Carcinoma
- What is being tested?
- Radiation Therapy, FOLFOX regimen and Capecitabine
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 35 participants
- Where
- 1 siteCanada
- Study dates
- 16 Aug 2023to 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 to 90 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Histologically confirmed invasive adenocarcinoma of the rectum
- Pelvic MRI defined disease (at least one of the following):
- mesorectum involved or breached - includes involvement of adjacent organ(s) (T3-T4)
- Patients are considered medically fit for oncologic resection
- ECOG performance status 0 or 1
- No evidence of established metastatic disease (CT chest and abdomen)
Show all 13Show fewer
- Absolute neutrophil count >1.5x109/L; platelets >100x109/L,
- Serum transaminase <3 x ULN;
- Adequate renal function (Cockroft Gault estimation >50 mL/min)
- Bilirubin <1.5 x ULN
- Ability to comply with oral medication
- Willingness and ability to give informed consent and comply with treatment and follow up schedule
- Age 18 or over
Who cannot join
- Previous chemotherapy
- Previous radiotherapy to the pelvis (including brachytherapy)
- Uncontrolled cardiorespiratory comorbidity (includes patients with inadequately controlled angina or myocardial infarction within 6 months of randomisation)
- T1 or T2 N0 disease without extra-mural venous invasion
- Unequivocal evidence of metastatic disease (includes resectable metastases)
- Major impairment of bowel function without defunctioning stoma/ileostomy (baseline grade 3 diarrhoea or clinically significant faecal incontinence
Show all 13Show fewer
- Known dihydropyrimidine dehydrogenase deficiency
- History of another malignancy within the last 5 years except successfully treated basal cell cancer of skin or carcinoma in situ of uterine cervix.
- Known Gilberts disease (hyperbilirubinaemia)
- Taking warfarin or phenytoin or sorivudine
- Gastrointestinal disorder which would interfere with oral therapy and its bioavailability
- Pregnant, lactating, or pre-menopausal women not using adequate contraception
- Unfit to receive any study treatment or subsequent surgical resection
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Canada1 site, 1 recruiting
- Recruiting
McGill University Health Centre
Montreal, Quebec, H4A 3J1
Neil Kopek, M.D., 514-934-4400, neil.kopek@muhc.mcgill.ca
Tarek Hijal, M.D., 514-934-4400, tarek.hijal@muhc.mcgill.ca
About this study
Official title: Organ Preservation in Rectal Adenocarcinoma Using Hypofractionated Pelvic Radiotherapy (Hypo-OPRA): A Phase II Clinical Trial
The combination of preoperative pelvic RT - either long-course chemoradiotherapy (LCCRT) or short-course radiotherapy (SCRT)- followed by surgery has been the standard of care in the curative treatment of locally advanced adenocarcinoma of the rectum for decades. Some patients however achieve a complete clinical response (cCR) to their preoperative treatment which opens the possibility of avoiding surgery and consequently preserving the rectum. There now exists a growing body of data from centres around the world validating the safety of a surveillance approach in clinical complete responders treated with LCCRT.
Read the detailed description
At McGill, SCRT is used routinely as a pre-operative radiotherapy schedule for locally advanced adenocarcinomas of the rectum. Likewise SCRT followed by chemotherapy is already used routinely at McGill as a pre-operative regimen for locally advanced rectal cancer with high risk features. Compelling registry data from Scandinavia shows that enduring clinical complete responses can be achieved after SCRT. To date, however, nearly all of the published data supporting a surveillance strategy in complete clinical responders is based on LCCRT. The present study proposes to explore further the organ preservation potential of SCRT.
Adopting a non-operative strategy in rectal cancer patients who achieve complete tumour regression avoids the risks of surgical morbidity and mortality, notably a sparing of the rectal sphincter muscles in the case of low-lying tumours and consequently avoidance of a permanent stoma.
Although multiple phase III trials support the routine use of SCRT in the pre-operative setting for locally advanced rectal adenocarcinoma, to date nearly all of the published data supporting a surveillance strategy in complete clinical responders is based on LCCRT. Compelling registry data from Scandinavia does show that enduring clinical complete responses can be achieved after short-course pelvic radiotherapy. Furthermore, the Rectal Cancer and Pre-operative Induction Therapy Followed by Dedicated Operation (RAPIDO) study demonstrated that, compared with LCCRT, SCRT followed by chemotherapy (SCRT-CH) has a higher pathologic complete response rate (29% versus 14%), less disease-related treatment failure, and superior distant metastasis-free survival.
Short-course pelvic radiotherapy with or without sequential chemotherapy can induce enduring clinical complete responders and the use of SCRT as part of a non-operative organ preservation strategy merits further prospective exploration. At McGill, SCRT is already used routinely as a pre-operative dose schedule for clinically node negative/N1 locally advanced adenocarcinomas of the rectum where downsizing is not required to achieve a sphincter sparing R0 resection. Likewise, since the publication of the RAPIDO trial, SCRT followed by FOLFOX/CAPOX chemotherapy has emerged as the preferred regimen at McGill for patients with high risk features (cT4 disease, cN2 and/or extramesorectal nodes, EMVI+, threatened or involved mesorectal fascia and/or sphincter muscles). The present phase II prospective study proposes to explore further the organ preservation potential of SCRT combined with a simultaneous integrated boost on sites of gross disease..
- Conditions
- Colorectal Carcinoma
- Being tested
- Radiation Therapy, FOLFOX regimen, Capecitabine
- Medical subject headings
- Colorectal Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Radiation TherapyRadiation
Also called Hyofractionated Radiotherapy
High Dose Hypofractionated Radiotherapy 35 Gy over 5 fractions.
FOLFOX regimenDrug
Radiosensitizing chemotherapy
CapecitabineDrug
Radiosensitizing chemotherapy
| Study group | Role | What they receive |
|---|---|---|
| Hypofractionated Pelvic Radiotherapy | Experimental | A single arm consisting of hypofractionated RT dose of 25 Gy in 5 fractions once daily fractions of intensity modulated radiotherapy (IMRT) with a simultaneous integrated boost up to 35 Gy on sites of gross disease (tumour and lymphadenopathy). Receives: Radiation: Radiation Therapy; Drug: FOLFOX regimen; Drug: Capecitabine |
What is being measured
The primary outcome is the main question the study is designed to answer.
Feasibility of Hypo-fractionated Approach in 5 fractions for a dose of 35Gy
Rate of failure to achieve CR or the rate of recurrence after achieving CR
Measured: One year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 May 2025
- Study start16 Aug 2023
- Primary completionSep 2027 (estimated)
- Study completion30 Jun 2029 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (28)Papers the sponsor has linked to this study.
- Other trials for Colorectal CarcinomaStudies of the same condition, open and under way.
- 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
- Not applicable
- Intervention model
- Single group
- Model description
- To achieve a complete clinical response (cCR) to their preoperative treatment which opens the possibility of avoiding surgery and consequently preserving the rectum. There now exists a growing body of data from centres around the world validating the safety of a surveillance approach in clinical complete responders treated with LCCRT.
- Masking
- None (open label)
- Enrolment
- 35 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Neil Kopek
- Sponsor type
- University, hospital or other
- Collaborators
- McGill University Health Centre/Research Institute of the McGill University Health Centre
- Responsible party
- Sponsor-investigator, Neil Kopek, McGill University Health Centre/Research Institute of the McGill University Health Centre
- Investigators
- Neil Kopek, M.D., Principal investigator, Radiation Oncologist - Radiation Oncology
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06991465
- Sponsor's protocol ID
- 2023-9472
- Acronym
- Hypo-OPRA
- Status last verified
- May 2025
- First submitted
- 12 May 2025
- Last updated
- 28 May 2025
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Kim H, Pedersen K, Olsen JR, Mutch MG, Chin RI, Glasgow SC, Wise PE, Silviera ML, Tan BR, Wang-Gillam A, Lim KH, Suresh R, Amin M, Huang Y, Henke LE, Park H, Ciorba MA, Badiyan S, Parikh PJ, Roach MC, Hunt SR. Nonoperative Rectal Cancer Management With Short-Course Radiation Followed by Chemotherapy: A Nonrandomized Control Trial. Clin Colorectal Cancer. 2021 Sep;20(3):e185-e193. doi: 10.1016/j.clcc.2021.03.003. Epub 2021 Apr 7.
PubMed 34001462Bahadoer RR, Dijkstra EA, van Etten B, Marijnen CAM, Putter H, Kranenbarg EM, Roodvoets AGH, Nagtegaal ID, Beets-Tan RGH, Blomqvist LK, Fokstuen T, Ten Tije AJ, Capdevila J, Hendriks MP, Edhemovic I, Cervantes A, Nilsson PJ, Glimelius B, van de Velde CJH, Hospers GAP; RAPIDO collaborative investigators. Short-course radiotherapy followed by chemotherapy before total mesorectal excision (TME) versus preoperative chemoradiotherapy, TME, and optional adjuvant chemotherapy in locally advanced rectal cancer (RAPIDO): a randomised, open-label, phase 3 trial. Lancet Oncol. 2021 Jan;22(1):29-42. doi: 10.1016/S1470-2045(20)30555-6. Epub 2020 Dec 7.
PubMed 33301740Nilsson PJ, Ahlberg M, Kordnejad S, Holm T, Martling A. Organ preservation following short-course radiotherapy for rectal cancer. BJS Open. 2021 Sep 6;5(5):zrab093. doi: 10.1093/bjsopen/zrab093.
PubMed 34686879Temple LK, Bacik J, Savatta SG, Gottesman L, Paty PB, Weiser MR, Guillem JG, Minsky BD, Kalman M, Thaler HT, Schrag D, Wong WD. The development of a validated instrument to evaluate bowel function after sphincter-preserving surgery for rectal cancer. Dis Colon Rectum. 2005 Jul;48(7):1353-65. doi: 10.1007/s10350-004-0942-z.
PubMed 15868235Jorge JM, Wexner SD. Etiology and management of fecal incontinence. Dis Colon Rectum. 1993 Jan;36(1):77-97. doi: 10.1007/BF02050307.
PubMed 8416784Appelt AL, Ploen J, Harling H, Jensen FS, Jensen LH, Jorgensen JC, Lindebjerg J, Rafaelsen SR, Jakobsen A. High-dose chemoradiotherapy and watchful waiting for distal rectal cancer: a prospective observational study. Lancet Oncol. 2015 Aug;16(8):919-27. doi: 10.1016/S1470-2045(15)00120-5. Epub 2015 Jul 5.
PubMed 26156652Glynne-Jones R, Hughes R. Critical appraisal of the 'wait and see' approach in rectal cancer for clinical complete responders after chemoradiation. Br J Surg. 2012 Jul;99(7):897-909. doi: 10.1002/bjs.8732. Epub 2012 Apr 27.
PubMed 22539154Maas M, Beets-Tan RG, Lambregts DM, Lammering G, Nelemans PJ, Engelen SM, van Dam RM, Jansen RL, Sosef M, Leijtens JW, Hulsewe KW, Buijsen J, Beets GL. Wait-and-see policy for clinical complete responders after chemoradiation for rectal cancer. J Clin Oncol. 2011 Dec 10;29(35):4633-40. doi: 10.1200/JCO.2011.37.7176. Epub 2011 Nov 7.
PubMed 22067400Dalton RS, Velineni R, Osborne ME, Thomas R, Harries S, Gee AS, Daniels IR. A single-centre experience of chemoradiotherapy for rectal cancer: is there potential for nonoperative management? Colorectal Dis. 2012 May;14(5):567-71. doi: 10.1111/j.1463-1318.2011.02752.x.
PubMed 21831177Habr-Gama A. Assessment and management of the complete clinical response of rectal cancer to chemoradiotherapy. Colorectal Dis. 2006 Sep;8 Suppl 3:21-4. doi: 10.1111/j.1463-1318.2006.01066.x.
PubMed 16813588Habr-Gama A, de Souza PM, Ribeiro U Jr, Nadalin W, Gansl R, Sousa AH Jr, Campos FG, Gama-Rodrigues J. Low rectal cancer: impact of radiation and chemotherapy on surgical treatment. Dis Colon Rectum. 1998 Sep;41(9):1087-96. doi: 10.1007/BF02239429.
PubMed 9749491Habr-Gama A, Gama-Rodrigues J, Sao Juliao GP, Proscurshim I, Sabbagh C, Lynn PB, Perez RO. Local recurrence after complete clinical response and watch and wait in rectal cancer after neoadjuvant chemoradiation: impact of salvage therapy on local disease control. Int J Radiat Oncol Biol Phys. 2014 Mar 15;88(4):822-8. doi: 10.1016/j.ijrobp.2013.12.012. Epub 2014 Feb 1.
PubMed 24495589Habr-Gama A, Perez RO, Nadalin W, Nahas SC, Ribeiro U Jr, Silva E Sousa AH Jr, Campos FG, Kiss DR, Gama-Rodrigues J. Long-term results of preoperative chemoradiation for distal rectal cancer correlation between final stage and survival. J Gastrointest Surg. 2005 Jan;9(1):90-9; discussion 99-101. doi: 10.1016/j.gassur.2004.10.010.
PubMed 15623449Habr-Gama A, Perez RO, Nadalin W, Sabbaga J, Ribeiro U Jr, Silva e Sousa AH Jr, Campos FG, Kiss DR, Gama-Rodrigues J. Operative versus nonoperative treatment for stage 0 distal rectal cancer following chemoradiation therapy: long-term results. Ann Surg. 2004 Oct;240(4):711-7; discussion 717-8. doi: 10.1097/01.sla.0000141194.27992.32.
PubMed 15383798Habr-Gama A, Perez RO, Proscurshim I, Campos FG, Nadalin W, Kiss D, Gama-Rodrigues J. Patterns of failure and survival for nonoperative treatment of stage c0 distal rectal cancer following neoadjuvant chemoradiation therapy. J Gastrointest Surg. 2006 Dec;10(10):1319-28; discussion 1328-9. doi: 10.1016/j.gassur.2006.09.005.
PubMed 17175450
Study at a glance
From the registry record, last updated by the sponsor on 28 May 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Organ Preservation in Rectal Adenocarcinoma Using Hypofractionated Pelvic Radiotherapy (Hypo-OPRA): A Phase II Clinical Trial
- ClinicalTrials.gov ID
- NCT06991465
- Acronym / sponsor ID
- Hypo-OPRA / 2023-9472
- Conditions
- Colorectal Carcinoma
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 35 participants (estimated)
- Lead sponsor
- Neil KopekUniversity, hospital or other
- Collaborators
- McGill University Health Centre/Research Institute of the McGill University Health Centre
- Study start
- 16 Aug 2023 (actual)
- Primary completion
- Sep 2027 (estimated)
- Study completion
- 30 Jun 2029 (estimated)
- First posted
- 28 May 2025 (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.
The combination of preoperative pelvic RT - either long-course chemoradiotherapy (LCCRT) or short-course radiotherapy (SCRT)- followed by surgery has been the standard of care in the curative treatment of locally advanced adenocarcinoma of the rectum for decades. Some patients however achieve a complete clinical response (cCR) to their preoperative treatment which opens the possibility of avoiding surgery and consequently preserving the rectum. There now exists a growing body of data from centres around the world validating the safety of a surveillance approach in clinical complete responders treated with LCCRT.
Detailed description
At McGill, SCRT is used routinely as a pre-operative radiotherapy schedule for locally advanced adenocarcinomas of the rectum. Likewise SCRT followed by chemotherapy is already used routinely at McGill as a pre-operative regimen for locally advanced rectal cancer with high risk features. Compelling registry data from Scandinavia shows that enduring clinical complete responses can be achieved after SCRT. To date, however, nearly all of the published data supporting a surveillance strategy in complete clinical responders is based on LCCRT. The present study proposes to explore further the organ preservation potential of SCRT.
Adopting a non-operative strategy in rectal cancer patients who achieve complete tumour regression avoids the risks of surgical morbidity and mortality, notably a sparing of the rectal sphincter muscles in the case of low-lying tumours and consequently avoidance of a permanent stoma.
Although multiple phase III trials support the routine use of SCRT in the pre-operative setting for locally advanced rectal adenocarcinoma, to date nearly all of the published data supporting a surveillance strategy in complete clinical responders is based on LCCRT. Compelling registry data from Scandinavia does show that enduring clinical complete responses can be achieved after short-course pelvic radiotherapy. Furthermore, the Rectal Cancer and Pre-operative Induction Therapy Followed by Dedicated Operation (RAPIDO) study demonstrated that, compared with LCCRT, SCRT followed by chemotherapy (SCRT-CH) has a higher pathologic complete response rate (29% versus 14%), less disease-related treatment failure, and superior distant metastasis-free survival.
Short-course pelvic radiotherapy with or without sequential chemotherapy can induce enduring clinical complete responders and the use of SCRT as part of a non-operative organ preservation strategy merits further prospective exploration. At McGill, SCRT is already used routinely as a pre-operative dose schedule for clinically node negative/N1 locally advanced adenocarcinomas of the rectum where downsizing is not required to achieve a sphincter sparing R0 resection. Likewise, since the publication of the RAPIDO trial, SCRT followed by FOLFOX/CAPOX chemotherapy has emerged as the preferred regimen at McGill for patients with high risk features (cT4 disease, cN2 and/or extramesorectal nodes, EMVI+, threatened or involved mesorectal fascia and/or sphincter muscles). The present phase II prospective study proposes to explore further the organ preservation potential of SCRT combined with a simultaneous integrated boost on sites of gross disease..
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
- Model description
- To achieve a complete clinical response (cCR) to their preoperative treatment which opens the possibility of avoiding surgery and consequently preserving the rectum. There now exists a growing body of data from centres around the world validating the safety of a surveillance approach in clinical complete responders treated with LCCRT.
| Arm | Type | Receives |
|---|---|---|
| Hypofractionated Pelvic Radiotherapy | Experimental | Radiation: Radiation Therapy, Drug: FOLFOX regimen, Drug: CapecitabineA single arm consisting of hypofractionated RT dose of 25 Gy in 5 fractions once daily fractions of intensity modulated radiotherapy (IMRT) with a simultaneous integrated boost up to 35 Gy on sites of gross disease (tumour and lymphadenopathy). |
Who may qualify
- Ages
- 18 to 90 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (13 listed)
- Histologically confirmed invasive adenocarcinoma of the rectum
- Pelvic MRI defined disease (at least one of the following):
- mesorectum involved or breached - includes involvement of adjacent organ(s) (T3-T4)
- Patients are considered medically fit for oncologic resection
- ECOG performance status 0 or 1
Key exclusion criteria (13 listed)
- Previous chemotherapy
- Previous radiotherapy to the pelvis (including brachytherapy)
- Uncontrolled cardiorespiratory comorbidity (includes patients with inadequately controlled angina or myocardial infarction within 6 months of randomisation)
- T1 or T2 N0 disease without extra-mural venous invasion
- Unequivocal evidence of metastatic disease (includes resectable metastases)
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 |
|---|---|---|
| Radiation TherapyAlso: Hyofractionated RadiotherapyHigh Dose Hypofractionated Radiotherapy 35 Gy over 5 fractions. | Radiation | Hypofractionated Pelvic Radiotherapy |
| FOLFOX regimenRadiosensitizing chemotherapy | Drug | Hypofractionated Pelvic Radiotherapy |
| CapecitabineRadiosensitizing chemotherapy | Drug | Hypofractionated Pelvic Radiotherapy |
Primary outcome
Feasibility of Hypo-fractionated Approach in 5 fractions for a dose of 35Gy
Time frame: One year
Rate of failure to achieve CR or the rate of recurrence after achieving CR
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 28 May 2025.
- Results publication: PubMed 34001462Kim H, Pedersen K, Olsen JR, Mutch MG, Chin RI, Glasgow SC, Wise PE, Silviera ML, Tan BR, Wang-Gillam A, Lim KH, Suresh R, Amin M, Huang Y, Henke LE, Park H, Ciorba MA, Badiyan S, Parikh PJ, Roach MC, Hunt SR. Nonoperative Rectal Cancer Management With Short-Course Radiation Followed by Chemotherapy: A Nonrandomized Control Trial. Clin Colorectal Cancer. 2021 Sep;20(3):e185-e193. doi: 10.1016/j.clcc.2021.03.003. Epub 2021 Apr 7.
- Results publication: PubMed 33301740Bahadoer RR, Dijkstra EA, van Etten B, Marijnen CAM, Putter H, Kranenbarg EM, Roodvoets AGH, Nagtegaal ID, Beets-Tan RGH, Blomqvist LK, Fokstuen T, Ten Tije AJ, Capdevila J, Hendriks MP, Edhemovic I, Cervantes A, Nilsson PJ, Glimelius B, van de Velde CJH, Hospers GAP; RAPIDO collaborative investigators. Short-course radiotherapy followed by chemotherapy before total mesorectal excision (TME) versus preoperative chemoradiotherapy, TME, and optional adjuvant chemotherapy in locally advanced rectal cancer (RAPIDO): a randomised, open-label, phase 3 trial. Lancet Oncol. 2021 Jan;22(1):29-42. doi: 10.1016/S1470-2045(20)30555-6. Epub 2020 Dec 7.
- Results publication: PubMed 34686879Nilsson PJ, Ahlberg M, Kordnejad S, Holm T, Martling A. Organ preservation following short-course radiotherapy for rectal cancer. BJS Open. 2021 Sep 6;5(5):zrab093. doi: 10.1093/bjsopen/zrab093.
- Results publication: PubMed 15868235Temple LK, Bacik J, Savatta SG, Gottesman L, Paty PB, Weiser MR, Guillem JG, Minsky BD, Kalman M, Thaler HT, Schrag D, Wong WD. The development of a validated instrument to evaluate bowel function after sphincter-preserving surgery for rectal cancer. Dis Colon Rectum. 2005 Jul;48(7):1353-65. doi: 10.1007/s10350-004-0942-z.
- Results publication: PubMed 8416784Jorge JM, Wexner SD. Etiology and management of fecal incontinence. Dis Colon Rectum. 1993 Jan;36(1):77-97. doi: 10.1007/BF02050307.
- Results publication: PubMed 26156652Appelt AL, Ploen J, Harling H, Jensen FS, Jensen LH, Jorgensen JC, Lindebjerg J, Rafaelsen SR, Jakobsen A. High-dose chemoradiotherapy and watchful waiting for distal rectal cancer: a prospective observational study. Lancet Oncol. 2015 Aug;16(8):919-27. doi: 10.1016/S1470-2045(15)00120-5. Epub 2015 Jul 5.
- Results publication: PubMed 22539154Glynne-Jones R, Hughes R. Critical appraisal of the 'wait and see' approach in rectal cancer for clinical complete responders after chemoradiation. Br J Surg. 2012 Jul;99(7):897-909. doi: 10.1002/bjs.8732. Epub 2012 Apr 27.
- Results publication: PubMed 22067400Maas M, Beets-Tan RG, Lambregts DM, Lammering G, Nelemans PJ, Engelen SM, van Dam RM, Jansen RL, Sosef M, Leijtens JW, Hulsewe KW, Buijsen J, Beets GL. Wait-and-see policy for clinical complete responders after chemoradiation for rectal cancer. J Clin Oncol. 2011 Dec 10;29(35):4633-40. doi: 10.1200/JCO.2011.37.7176. Epub 2011 Nov 7.
- Results publication: PubMed 21831177Dalton RS, Velineni R, Osborne ME, Thomas R, Harries S, Gee AS, Daniels IR. A single-centre experience of chemoradiotherapy for rectal cancer: is there potential for nonoperative management? Colorectal Dis. 2012 May;14(5):567-71. doi: 10.1111/j.1463-1318.2011.02752.x.
- Results publication: PubMed 16813588Habr-Gama A. Assessment and management of the complete clinical response of rectal cancer to chemoradiotherapy. Colorectal Dis. 2006 Sep;8 Suppl 3:21-4. doi: 10.1111/j.1463-1318.2006.01066.x.
- Results publication: PubMed 9749491Habr-Gama A, de Souza PM, Ribeiro U Jr, Nadalin W, Gansl R, Sousa AH Jr, Campos FG, Gama-Rodrigues J. Low rectal cancer: impact of radiation and chemotherapy on surgical treatment. Dis Colon Rectum. 1998 Sep;41(9):1087-96. doi: 10.1007/BF02239429.
- Results publication: PubMed 24495589Habr-Gama A, Gama-Rodrigues J, Sao Juliao GP, Proscurshim I, Sabbagh C, Lynn PB, Perez RO. Local recurrence after complete clinical response and watch and wait in rectal cancer after neoadjuvant chemoradiation: impact of salvage therapy on local disease control. Int J Radiat Oncol Biol Phys. 2014 Mar 15;88(4):822-8. doi: 10.1016/j.ijrobp.2013.12.012. Epub 2014 Feb 1.
- Individual participant dataSharing planned: No
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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.
Neil Kopek, M.D. principal investigator
Radiation Oncologist - Radiation Oncology
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Radiation Therapy, FOLFOX regimen and Capecitabine in people with Colorectal Carcinoma, run by Neil Kopek at 1 site in Canada.
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 13 inclusion and 13 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 28 May 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Canada. 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 Neil Kopek, M.D. (514-934-4400, neil.kopek@muhc.mcgill.ca), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Feasibility of Hypo-fractionated Approach in 5 fractions for a dose of 35Gy (time frame: One year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT06991465, which also lists 28 linked publications.
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 28 May 2025.