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

2. januar 2019 oppdatert av: 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.

Studieoversikt

Status

Ukjent

Forhold

Intervensjon / Behandling

Studietype

Intervensjonell

Registrering (Faktiske)

124

Fase

  • Fase 2

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

  • Storbritannia
      • Birmingham, Storbritannia
        • Queen Elizabeth
      • Cambridge, Storbritannia
        • Addenbrooke's Hospital
      • Cardiff, Storbritannia
        • Velindre Hospital
      • Ipswich, Storbritannia
        • Ipswich
      • Liverpool, Storbritannia
        • Clatterbridge Centre For Oncology
      • London, Storbritannia
        • Royal Marsden NHSFT
      • Newcastle, Storbritannia
        • Freeman Hospital

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år og eldre (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Mann

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

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / 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.
Eksperimentell: 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.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
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
Tiltaksbeskrivelse
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

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Institute of Cancer Research, United Kingdom

Samarbeidspartnere

Cancer Research UK

Etterforskere

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

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Generelle publikasjoner

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart

1. juni 2011

Primær fullføring (Faktiske)

1. desember 2013

Studiet fullført (Forventet)

1. desember 2019

Datoer for studieregistrering

Først innsendt

26. oktober 2011

Først innsendt som oppfylte QC-kriteriene

11. september 2012

Først lagt ut (Anslag)

14. september 2012

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

4. januar 2019

Siste oppdatering sendt inn som oppfylte QC-kriteriene

2. januar 2019

Sist bekreftet

1. januar 2019

Mer informasjon

Begreper knyttet til denne studien

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • ICR-CTSU/2010/10025
  • CRUK/10/022 (Annet stipend/finansieringsnummer: CRUK)
  • ISRCTN48709247 (Registeridentifikator: ISRCTN)

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

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