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A Study of Prostate and pelvIs Versus prOsTate Alone Treatment for Locally Advanced Prostate Cancer (PIVOTAL)

2. januar 2019 opdateret af: Institute of Cancer Research, United Kingdom

A Randomised Phase II Trial of Prostate and pelvIs Versus prOsTate Alone Treatment for Locally Advanced Prostate Cancer

Prostate cancer is the most common male cancer in the UK with 35,000 cases diagnosed annually. 35% of these are locally advanced disease. These patients have a high chance of pelvic lymph node involvement and have relatively poor prostate cancer survival rates of 22.5% at 10 years.

One of the standard treatments for these patients is radiotherapy to the prostate. PIVOTAL is a multi-centre phase II non-comparative randomised feasibility trial, in which patients with a high chance of pelvic lymph node involvement are randomised between prostate radiotherapy alone and prostate + pelvic radiotherapy.

Both groups will receive radiotherapy called Intensity Modulated Radiation Therapy (IMRT). This is a relatively new method of shaping radiotherapy treatment beams which allows the tumour to be treated more precisely, whilst avoiding more of the surrounding normal, healthy tissues (particularly the rectum, bladder and bowel). Using IMRT, it is possible to deliver higher doses of radiotherapy to the pelvis than with previous radiotherapy methods - this has been tested in a single hospital, single group setting and levels of side effects (toxicity) were acceptable.

PIVOTAL aims to find out whether toxicity levels at 18 weeks from the start of radiotherapy remain acceptable when treatment is given in multiple cancer centres across the UK. It is randomised to ensure unbiased collection of acute toxicity data and to provide information on patients' willingness to participate in a randomised study. Should the phase II study be successful, the investigators would develop a phase III trial to compare treatment effectiveness (disease control).

Patients who enter PIVOTAL will be followed up for two years from the start of radiotherapy and data relating to toxicity will be collected. They will also be asked to complete patient related symptoms questionnaires. Data related to disease recurrence will then be collected annually from patients' standard hospital visits.

Studieoversigt

Status

Ukendt

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

124

Fase

  • Fase 2

Kontakter og lokationer

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

Studiesteder

  • Det Forenede Kongerige
      • Birmingham, Det Forenede Kongerige
        • Queen Elizabeth
      • Cambridge, Det Forenede Kongerige
        • Addenbrooke's Hospital
      • Cardiff, Det Forenede Kongerige
        • Velindre Hospital
      • Ipswich, Det Forenede Kongerige
        • Ipswich
      • Liverpool, Det Forenede Kongerige
        • Clatterbridge Centre for Oncology
      • London, Det Forenede Kongerige
        • Royal Marsden NHSFT
      • Newcastle, Det Forenede Kongerige
        • Freeman 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

Han

Beskrivelse

Inclusion Criteria:

  1. Histologically confirmed, non-metastatic adenocarcinoma of the prostate, previously untreated (other than by neoadjuvant hormonal treatment)

  2. National Collaborative Cancer Network locally advanced disease (T3b± or T4)43 or:

    • Estimated risk of pelvic lymph node involvement ≥30% * and either:

    • Gleason 9 or 10 or
    • Gleason 8 and one other high risk feature (T3± disease or PSA >20) or
    • Gleason 7 and 2 high risk features (T3± disease and PSA ≥30)
  3. WHO performance status 0 or 1
  4. Normal blood count (Hb > 11g/dl, WBC >4000/mm3, platelets >100,000/mm3)
  5. LHRH analogue therapy for 6-9 months duration prior to proposed radiotherapy treatment and PSA < 4ng/ml prior to randomisation.
  6. Age ≥ 18 years
  7. Patients must be prepared to attend follow up. All patients participating in the Patient Reported Outcomes (PRO) Study must have adequate cognitive ability to complete the PRO questionnaires.

  8. Written informed consent

    • T3a disease should be demonstrated convincingly, either clinically or by MRI. T3b disease (seminal vesicle involvement) must be convincingly demonstrated on MR.

      • Risk of pelvic lymph node involvement = (Gleason score - 6) x 10 + 2/3 PSA

Exclusion criteria:

  1. Prior pelvic radiotherapy
  2. Prior major pelvic surgery (e.g. colectomy, colostomy, cystectomy, prostatectomy)*
  3. Radiologically suspicious (short axis diameter ≥1.0cm unless biopsied and negative) or pathologically confirmed lymph node involvement
  4. Life expectancy < 5 years
  5. Castrate resistant prostate cancer (rising PSA after LHRHa and anti-androgen)
  6. Previous active malignancy within the last 5 years other than basal cell carcinoma
  7. Co-morbid conditions likely to impact on the decision to treat with radiotherapy (e.g. previous inflammatory bowel disease, previous colo-rectal surgery, significant bladder instability or urinary incontinence)

  8. Bilateral hip prosthesis or fixation which would interfere with standard radiation beam configuration

    • Patients who have undergone minor pelvic surgery will be eligible (eg appendicectomy, trans urethral resection of prostate (TURP), exploratory laparoscopy, haemorrhoidectomy, inguinal/femoral hernia repair)

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Aktiv komparator: Prostate Alone IMRT
Participants will receive standard prostate Intensity Modulated Radiotherapy (IMRT) of 74Gy in 37 fractions delivered over 7.5 weeks.
Stråling: Prostate alone IMRT
Participants will receive standard prostate IMRT of 74Gy in 37 fractions delivered over 7.5 weeks.
Eksperimentel: Prostate & Pelvis IMRT
Participants will receive prostate and pelvis IMRT with a dose of 74Gy in 37 fractions delivered over 7.5 weeks to the prostate and 60Gy in 37 fractions delivered over 7.5weeks to the pelvis.
Stråling: Prostate and pelvis IMRT
Participants will receive prostate and pelvis IMRT with a dose of 74Gy in 37 fractions delivered over 7.5 weeks to the prostate and 60Gy in 37 fractions delivered over 7.5weeks to the pelvis.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Acute lower GI RTOG toxicity at week 18 of follow-up.
Tidsramme: 18 weeks post treatment
Proportion of patients with acute GI RTOG grade ≥2 toxicity at week 18 from start of radiotherapy calculated as the number of patients with grade ≥2 toxicity at week 18 over the number of evaluable at week 18.
18 weeks post treatment

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Ability to deliver 60Gy in 37 fractions to the pelvis using the varying radiotherapy planning techniques and delivery systems at the participating centres.
Tidsramme: 2 yr
2 yr
Late (1 and 2 year) toxicity
Tidsramme: 2 yr
Measured using RTOG toxicity scale and CTCAE
2 yr
Patient Reported Outcomes
Tidsramme: 2 yr
Participants are requested to complete questionnaires to record the impact of the treatments on bowel and bladder function.
2 yr
Biochemical progression free survival
Tidsramme: 10 yr
10 yr
Time to local progression
Tidsramme: 10 yr
10 yr
Time to distant metastases
Tidsramme: 10 yr
10 yr
Overall survival
Tidsramme: 10 yr
10 yr

Samarbejdspartnere og efterforskere

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

Sponsor

Institute of Cancer Research, United Kingdom

Samarbejdspartnere

Cancer Research UK

Efterforskere

  • Ledende efterforsker: Prof. David Dearnaley, Institute of Cancer Research/RMHNHSFT

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

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

1. juni 2011

Primær færdiggørelse (Faktiske)

1. december 2013

Studieafslutning (Forventet)

1. december 2019

Datoer for studieregistrering

Først indsendt

26. oktober 2011

Først indsendt, der opfyldte QC-kriterier

11. september 2012

Først opslået (Skøn)

14. september 2012

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

4. januar 2019

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

2. januar 2019

Sidst verificeret

1. januar 2019

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • ICR-CTSU/2010/10025
  • CRUK/10/022 (Andet bevillings-/finansieringsnummer: CRUK)
  • ISRCTN48709247 (Registry Identifier: ISRCTN)

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 .

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Betingelser

Sjældne sygdomme

Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

Abonner