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Mri IN STaging REctal Polyp Planes (MINSTREL)

13. september 2018 opdateret af: Royal Marsden NHS Foundation Trust

Early cancers of the rectum can be removed safely through the anus without subjecting patients to major abdominal surgery in a procedure called TEMS (transanal endoscopic microsurgery). Patients undergoing TEMS can benefit from reduced mortality, impotence, hospital stay and avoiding a stoma that may be associated with pelvic surgery.

Currently few of the patients eligible for TEMS are offered it for a variety of reasons that include uncertainties about the risk of leaving residual tumour and the increased risk of subsequent recurrence of cancer within the pelvis. Current UK guidelines state there is no role for imaging in assessing the malignant polyp. Conversely whilst retrospectively reviewing their MRI databank the investigators have found evidence that MRI can accurately judge the depth of these early tumours and thereby potentially identify patients for local excision.

The investigators hope to prospectively test their hypothesis that an MRI scan can accurately gauge depth of tumour spread in an unselected group of benign and malignant tumours measuring between 20mm and 50mm in size.

The investigators will identify eligible patients awaiting surgery / polypectomy and if they consent to this pilot study participants will undergo an MRI to assess their tumour which assesses safety at all levels of the rectal wall. The accuracy of MRI can then be established by reference to gold standard histopathology. Should MRI prove sensitive and specific then the investigators hope to change national guidelines to mandate MRI to standardise assessment and thereby increase the appropriate use of TEMS in the UK.

Studieoversigt

Status

Ukendt

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Data published by the NBOCAP in 2014 shows 45% of the 9,433 rectal cancers treated in the UK annually were either T1 or T2 and 66% were node negative. Despite this 77% of those operated on underwent major resection whilst only 11% were locally excised.

Rectal tumours are heterogenous and endosocpic biopsy is an unreliable way to exclude malignancy. Objective endoscopic criteria applied to assess lesion morphology and pit pattern mostly have an evidence base derived from international single centre trials and the accuracy and variable use in UK routine practice remains un-audited. Endorectal ultrasound is rarely used and in routine practice has shown to be inaccurate. Of the early rectal cancers submitted to the UK TEM database, 44% of pT1 and 31% of pT2 cancers were incorrectly presumed to be benign preoperatively. Pre operatively considering a lesion benign when in fact it is malignant is associated with a hazard 1.98 of leaving residual disease after excision with TEMS.

High-Spatial-Resolution magnetic resonance imaging (MRI) is a standard of care in assessing the circumferential resection margin of rectal tumours and triaging patients with more advanced tumours to neoadjuvant therapy to reduce local recurrence. MRI is the established modality for identifying rectal cancer position, the relationship of tumour to the peritoneal reflection, is less user dependent than ultrasound, provides reliable information about extramural disease and is available in all centres that operate on rectal cancer. There is a paucity of evidence base clarifying the current accuracy of MRI in assessing T stage and lymph node involvement in early rectal cancer.

Eligible patients will be identified on colonoscopy if they are found to have a 20mm to 50mm rectal tumour within 150mm of the anal verge. Endoscopic assessment +/- ultrasound +/- biopsies may be taken as per local policy for review at the local multidisciplinary team meeting. Patients will be invited to participate in the trial after the index colonoscopy. Patients will have fully recovered from the endoscopy and any sedation given before being approached to join the trial.

All patients who enter the trial will be sent for an MRI. The MRI will be reported using a novel staging proforma. The results of all the staging investigations, the MRI and any biopsy will be made available to the clinician and any MDT discussion. The patients will proceed to excision or resection of the tumour as per clinician / MDT discussion.

Patients will be followed up as per routine NHS care as determined by local polyp surveillance protocol or MDT discussion.

Undersøgelsestype

Interventionel

Tilmelding (Forventet)

55

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Det Forenede Kongerige
      • London/Surrey, Det Forenede Kongerige, SM2 5PT
        • Royal Marsden Hospital NHS Foundation Trust
    • Croydon
      • Thornton Heath, Croydon, Det Forenede Kongerige, CR7 7YE
        • Croydon University Hospital
    • Essex
      • Colchester, Essex, Det Forenede Kongerige, CO4 5JL
        • Colchester General Hospital
    • Hampshire
      • Portsmouth, Hampshire, Det Forenede Kongerige, PO6 3LY
        • Queen Alexandra Hospital
    • London
      • Isleworth, London, Det Forenede Kongerige, TW7 6AF
        • West Middlesex Hospital
    • Oxford
      • Headington, Oxford, Det Forenede Kongerige, OX3 7LE
        • Churchill Hospital
    • West Yorkshire
      • Bradford, West Yorkshire, Det Forenede Kongerige, BD9 6RJ
        • Bradford Royal Infirmary
    • Wiltshire
      • Salisbury, Wiltshire, Det Forenede Kongerige, SP2 8BJ
        • Salisbury District Hospital

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Patients aged over 18 years of age presenting with 20 to 50mm tumours found at flexible sigmoidosocpy /colonoscopy presumed either adenoma or adenocarcinoma.
  • Patients must be able to undergo colonoscopy, adequate bowel preparation, MRI, and surgery if necessary.

Exclusion Criteria:

  • Patients who are unable to consent, who withhold consent or who withdraw consent will be excluded.
  • Patients will be excluded if they have a contraindication to MRI (e.g. intraocular metal fragments, certain pacemakers, severe claustrophobia).

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Diagnostisk
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Novel pelvic MRI scan assessment
All patients with rectal tumours of 20-50mm in size who consent to enter the trial will receive novel staging report for their pelvic MRI scan.
Andet: Novel Pelvic MRI scan assessment
A novel MRI assessment of early rectal cancers will be provided for all patients in MINSTREL

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Measurement of the accuracy of a novel MRI assessment tool to accurately stage Early Rectal Cancers and Polyps
Tidsramme: 6 weeks post diagnosis
6 weeks post diagnosis

Sekundære resultatmål

Resultatmål
Tidsramme
Measurement of Inter-observer Kappa agreement for stage of tumour
Tidsramme: At diagnosis
At diagnosis
Measurement of the Sensitivity and specificity of MRI for lymph node metastasis
Tidsramme: 6 weeks after diagnosis
6 weeks after diagnosis

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Royal Marsden NHS Foundation Trust

Samarbejdspartnere

Pelican Cancer Foundation

Efterforskere

  • Ledende efterforsker: Gina Brown, Royal Marsden Hospital NHS Foundation Trust

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

13. august 2015

Primær færdiggørelse (Faktiske)

27. juli 2017

Studieafslutning (Forventet)

27. juli 2020

Datoer for studieregistrering

Først indsendt

18. august 2015

Først indsendt, der opfyldte QC-kriterier

21. august 2015

Først opslået (Skøn)

26. august 2015

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

14. september 2018

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

13. september 2018

Sidst verificeret

1. september 2018

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • CCR4346

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Endetarmskræft

Kliniske forsøg med Novel Pelvic MRI scan assessment

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Placeringer

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