ClinicalTrials.gg
Status unknownNCT02005965MERCURY IIUpdated Sep 18, 2018

Low Rectal Cancer Study (MERCURY II)

An observational study in Adenocarcinoma, Adenocarcinoma, Mucinous and Carcinoma, sponsored by Royal Marsden NHS Foundation Trust. Status unknown at 17 sites in 3 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2018-09-18.

Primary conditionAdenocarcinoma, MucinousRegistry: AdenocarcinomaReclassifiedWhy we changed it
Registry
Adenocarcinoma — the first condition term the registry derived for this study.
ClinicalTrials.gg
Adenocarcinoma, Mucinous
Why
  1. The study's listed conditions name Adenocarcinoma, Mucinous, a narrower term within Adenocarcinoma.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Royal Marsden NHS Foundation Trust · Observational

The sponsor has not verified this record recently (last verified Sep 2018), so the status shown — last known as Active, not recruiting — may be out of date.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
542
Ages
18 Years and older
Sex
All
01

Study summary

The MERCURY Study demonstrated the accuracy, feasibility and reproducibility of Magnetic Resonance Imaging (MRI) to stage rectal cancer in a prospective, multidisciplinary, multi-centre study. However, there were differences in patient outcome, dependent upon the position of the tumour in the rectum and its height above the anal verge. Whilst the outcome was excellent for patients who underwent an anterior resection, the outcome, based upon margin involvement and quality of the specimen, was poor for patients who underwent an abdomino-perineal excision for low rectal cancer.

It is proposed that accurate MRI staging pre-operatively will allow the correct patients to receive neo-adjuvant chemoradiotherapy (CRT), and also pre-warn the surgeons if the resection margins appear threatened so that the operation can be modified to take this into account. The primary aims of the Low Rectal Cancer Study (MERCURY II) are to assess the rate of CRM positivity rate in low rectal cancer and to assess the difference in global quality of life at two years post surgery in patients according to plane of surgery with or without sphincter preservation.

Read the detailed description

The aim of this study is to reduce the positive margin rate of 30% to around 15%. The study is an international multicentre, prospective, observational study, whereby patients with biopsy-proven low-rectal cancer (lower edge of the tumour \< 6cms from the anal verge on MRI), will be recruited from participating centres, having given informed, written consent. Data from the radiology, surgical and pathological aspects will be collected and analysed centrally at the Royal Marsden Hospital. The patient's medical records will be reviewed for five years post surgery, and the patients will also be followed up by quality of life questionnaires. This project aims to show that in low rectal cancer, improved local control and survival can be achieved through a reduction in the involved CRM rates by MRI-planned surgery and selective pre-operative therapy. It also aims to assess the ability to predict disease recurrence and to provide an assessment of disease-free survival and overall survival.

02

Conditions studied

  • Adenocarcinoma
  • Adenocarcinoma, Mucinous
  • Carcinoma
  • Neoplasms, Glandular and Epithelial
  • Neoplasms by Histologic Type
  • Neoplasms
  • Neoplasms, Cystic, Mucinous, and Serous
  • Colorectal Neoplasms
  • Intestinal Neoplasms
  • Gastrointestinal Neoplasms
  • Digestive System Neoplasms
  • Neoplasms by Site
  • Digestive System Diseases
  • Gastrointestinal Diseases
  • Intestinal Diseases
  • Rectal Diseases

Keywords

  • Rectal Cancer
  • Low Rectal Cancer
  • MERCURY
  • Cancer
  • CRM
  • Circumferential Margin
  • Quality of Life
  • MRI
  • Radiology
  • Abdominoperineal Excision
  • Anterior Resection
  • Surgery
  • Pathology
03

In context

Adenocarcinoma, Mucinous Reclassified

31 studies on the registry are indexed under Adenocarcinoma, Mucinous; 10 are open to participants now.

Browse Adenocarcinoma, Mucinous studies →

Lead sponsor

Royal Marsden NHS Foundation Trust is the lead sponsor of 273 studies on the registry; 53 are open to participants now.

Compared within Adenocarcinoma, Mucinous, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Adenocarcinoma. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients with biopsy proven adenocarcinoma within 6cm of the anal verge confirmed on MRI.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Ability to give informed, written consent.
  • Adults age 18 or over - male or female.
  • Recently diagnosed with -proven, primary, low rectal cancer.
  • No previous therapy for rectal cancer.

Exclusion criteria

Exclusion Criteria:

  • Current pregnancy, including ectopic pregnancy.
  • Previous pelvic/rectal (excluding carcinoma in-situ).
  • Previous pelvic radiotherapy.
  • Previous pelvic floor surgery for faecal incontinence or prolapse.
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
542 participants (actual)
Patient registry
No

Groups and cohorts

  • Staging and outcomes for patients with Low Rectal Cancer

    Low Rectal Cancer defined on MRI as a cancer within 6cm of the anal verge

06

What researchers measure

Primary outcomes

  1. To assess the rate of CRM positivity rate in low rectal cancer.

    Time frame: 4 years

  2. To compare global quality of life at two years post surgery in patients according to plane of surgery with or without sphincter preservation.

    Time frame: 8 years

Secondary outcomes

  1. To compare patient reported outcomes in patients according to plane of surgery with or without sphincter preservation.

    Time frame: 8 years

  2. Analysis of the clinical and radiological factors influencing the decision by surgeons to carry out Anterior Resections, APE or extralevator APE.

    Time frame: 8 years

  3. Comparison of time to local recurrence, disease-free and overall survival between patients undergoing different types of surgery.

    Time frame: 8 years

  4. Comparison of imaging and pathology staging assessment, patient characteristics and complication rates, between different types of surgery and surgical approaches.

    Time frame: 8 years

  5. Investigation of potential associations between imaging and pathology assessment of radial and distal margins, neo-adjuvant chemoradiotherapy, perineal complications and sphincter preservation rates.

    Time frame: 8 years

  6. Investigation of potential association between length of operation with number of complications and length of post-operative ITU/HDU stay.

    Time frame: 8 years

07

Study locations

17 sites
  • Vivantes Klinikum im Friedrichshain
    Berlin, 10249, Germany
  • Krankenhaus Dresden-Friedrichstadt
    Dresden, 01067, Germany
  • The First Surgical Clinic
    Belgrade, 11000, Serbia
  • Milton Keynes General Hospital
    Milton Keynes, Buckinghamshire MK6 5LD, United Kingdom
  • Stepping Hill Hospital
    Stockport, Cheshire SK2 7JE, United Kingdom
  • North Hampshire Hospitals NHS Trust (Basingstoke Hospital)
    Basingstoke, Hampshire RG24 9NA, United Kingdom
  • West Middlesex University Hospital
    Isleworth, Middlesex TW7 6AF, United Kingdom
  • Weston General Hospital
    Weston-super-Mare, Somerset BS23 4TQ, United Kingdom
  • Croydon University Hospital
    Croydon, Surrey CR7 7YE, United Kingdom
  • Frimley Park Hospital NHS Foundation Trust
    Frimley, Surrey GU16 7UJ, United Kingdom
  • Princess of Wales Hospital
    Bridgend, Wales CF31 1RQ, United Kingdom
  • University Hospital of Wales
    Cardiff, Wales CF14 4XW, United Kingdom
  • Bradford Royal Infirmary
    Bradford, West Yorkshire BD9 6RJ, United Kingdom
  • Salisbury NHS Foundation Trust (Salisbury District Hospital)
    Salisbury, Wiltshire SP2 8BJ, United Kingdom
  • Ulster Hospital
    Belfast, BT16 1RH, United Kingdom
  • Royal Marsden Hospital
    London & Surrey, United Kingdom
  • North Manchester General Hospital
    Manchester, M8 5RB, United Kingdom
08

References and documents

Publications

  • Battersby NJ, How P, Moran B, Stelzner S, West NP, Branagan G, Strassburg J, Quirke P, Tekkis P, Pedersen BG, Gudgeon M, Heald B, Brown G; MERCURY II Study Group. Prospective Validation of a Low Rectal Cancer Magnetic Resonance Imaging Staging System and Development of a Local Recurrence Risk Stratification Model: The MERCURY II Study. Ann Surg. 2016 Apr;263(4):751-60. doi: 10.1097/SLA.0000000000001193. PubMed 25822672 ↗
09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Aug 2007 to primary completion in Mar 2016, 102 months.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 21, 2013
First posted
Dec 9, 2013
StartActual
Aug 13, 2007
Primary completionActual
Mar 11, 2016
CompletionEst.
Mar 11, 2021
Last update
Sep 18, 2018
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 18, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02005965
Collaborators
Pelican Cancer Foundation
Responsible party
Sponsor
First posted
Dec 9, 2013
Start date
Aug 13, 2007
Primary completion
Mar 11, 2016
Completion
Mar 11, 2021 (estimated)
Last update
Sep 18, 2018

Study contacts

Gina Brown
principal investigator · Royal Marsden NHS Foundation Trust
Brendan Moran
principal investigator · Pelican Cancer Foundation

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Sep 2018. You cannot join it, but the record below documents what was studied.

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