Denne side blev automatisk oversat, og nøjagtigheden af ​​oversættelsen er ikke garanteret. Der henvises til engelsk version for en kildetekst.

Study on Prostate Salvage Using High-dose-rate Brachytherapy (PROSCATE)

Multicenter Prospective Observational Study on Prostate Salvage Using High-dose-rate Brachytherapy

A prospective, observational, multicenter study analyzing salvage treatment for prostate cancer-diagnosed via next-generation imaging (choline positron emission tomography (PET)/prostate-specific membrane antigen (PSMA) PET and magnetic resonance imaging (MRI)) and positive biopsy-using two fractions of high-dose-rate (HDR) brachytherapy.

Studieoversigt

Status

Rekruttering

Betingelser

Detaljeret beskrivelse

The objectives of this prospective, multicenter study are:

  • Primary:

    1. Biochemical relapse-free survival, defined as the time to biochemical relapse (nadir plus 2 ng/mL - Phoenix criteria).

  • Secondary:

    1. Local relapse-free survival, defined as the time from treatment to local relapse confirmed by imaging (choline PET/MRI).
    2. Analysis of acute and chronic toxicity (Common Terminology Criteria for Adverse Events [CTCAE] version 5).
    3. Assessment of patient quality of life before and after treatment to analyze the impact of local re-irradiation on daily life using the following questionnaires: International Prostate Symptom Score (IPSS), Functional Assessment of Cancer Therapy-Prostate (FACT-P), and European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire - Prostate Module (EORTC QLQ-PR25).

Primary outcome measure: Biochemical relapse-free survival, and analysis of toxicity and quality of life in patients treated with salvage brachytherapy following radical treatment.

Study population, total number of subjects, and duration: Patients who received radical-intent radiotherapy as their initial treatment (brachytherapy alone, external beam radiotherapy, or external beam radiotherapy plus a brachytherapy boost) and were diagnosed with local recurrence via next-generation imaging techniques (choline PET/PSMA PET) and prior biopsy; these patients are scheduled to undergo salvage brachytherapy as part of routine clinical practice. A calculated sample size of 63 patients will be reached over a 2-year recruitment period. Follow-up will be conducted according to standard clinical practice every 6 months for the 4-year duration of the study.

Undersøgelsestype

Observationel

Tilmelding (Anslået)

63

Kontakter og lokationer

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

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

    • Alicante
      • Benidorm, Alicante, Spanien, 03501
        • Rekruttering
        • Hospital HCB Benidorm
        • Kontakt:
        • Ledende efterforsker:
          • Silvia Rodríguez Villalba, MD
    • Barcelona
      • L'Hospitalet de Llobregat, Barcelona, Spanien, 08908
        • Rekruttering
        • Instituto Catalán de Oncología L'Hospitalet
        • Kontakt:
        • Ledende efterforsker:
          • Andrea Slocker Escarpa, MD
    • Cantabria
      • Santander, Cantabria, Spanien, 39008
        • Rekruttering
        • Hospital Universitario Marqués de Valdecilla
        • Kontakt:
        • Ledende efterforsker:
          • Ana Soledad García Blanco, MD
    • Córdoba
      • Córdoba, Córdoba, Spanien, 14004
    • Guipuzcoa
      • San Sebastián, Guipuzcoa, Spanien, 20014
        • Ikke rekrutterer endnu
        • Instituto Oncológico de San Sebastián (Onkologikoa)
        • Kontakt:
        • Ledende efterforsker:
          • Alai Goñi Ramírez, MD
    • Madrid
      • Madrid, Madrid, Spanien, 28034
        • Rekruttering
        • Hospital Universitario Ramón y Cajal
        • Kontakt:
        • Ledende efterforsker:
          • María Teresa Muñoz Migueláñez, MD
    • Navarre
      • Pamplona, Navarre, Spanien, 31008
        • Rekruttering
        • Hospital Universitario de Navarra
        • Kontakt:
        • Ledende efterforsker:
          • Ignacio Visus Fernández de Manzano, MD
    • Pontevedra
      • Vigo, Pontevedra, Spanien, 36312
        • Rekruttering
        • Hospital Meixoeiro
        • Kontakt:
        • Ledende efterforsker:
          • Patricia Willisch Santamaría, MD
    • Valencia
      • Valencia, Valencia, Spanien, 46026
        • Rekruttering
        • Hospital Universitario y Politécnico La Fe
        • Kontakt:
          • Francisco Javier Celada Álvarez, MD
          • Telefonnummer: 961 24 40 00
          • E-mail: celada_fra@gva.es
        • Ledende efterforsker:
          • Francisco Javier Celada Álvarez, MD
    • Vizcaya
      • Barakaldo, Vizcaya, Spanien, 48903
        • Ikke rekrutterer endnu
        • Hospital Universitario de Cruces
        • Kontakt:
        • Ledende efterforsker:
          • David Büchser García, MD

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

Prøveudtagningsmetode

Sandsynlighedsprøve

Studiebefolkning

Patients treated with radical-intent radiotherapy as their primary treatment (brachytherapy alone, external beam radiotherapy, or external beam radiotherapy plus a brachytherapy boost) who have been diagnosed with local recurrence via next-generation imaging techniques (Choline PET or PSMA PET) and prior biopsy, and who are to undergo salvage brachytherapy as part of routine clinical practice.

Beskrivelse

Inclusion Criteria:

  • Age over 18 years.
  • Patients diagnosed with local recurrence confirmed by next-generation imaging and a positive biopsy.
  • Hormone-sensitive patient.
  • Patients whose initial treatment consisted of brachytherapy alone, external beam radiotherapy, or external beam radiotherapy with a prostate brachytherapy boost.

Exclusion Criteria:

  • Metastatic disease.
  • Castration-resistant prostate cancer, defined according to EAU (European Association of Urology) guidelines: A patient who progresses despite maintaining testosterone levels within the castration range (testosterone <50 ng/dL or <1.7 nmol/L) and presents with at least one of the following factors: Three consecutive rises in PSA (Prostate-Specific Antigen) levels, measured one week apart, representing two increases of 50% above the nadir, with a PSA level >2; PSA progression despite successive hormonal manipulations; Progression of bone lesions: progression or appearance of two or more bone lesions, or soft-tissue progression according to Response Evaluation Criteria in Solid Tumors (RECIST criteria).

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Observationsmodeller: COHORT
  • Tidsperspektiver: PROSPECTIVE

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Biochemical relapse-free survival
Tidsramme: From the date of salvage brachytherapy to 48 months after treatment

Time from salvage brachytherapy to biochemical recurrence of prostate cancer, defined according to the Phoenix definition as a rise in prostate-specific antigen (PSA) of ≥2 ng/mL above the post-treatment PSA nadir. Patients without biochemical recurrence will be censored at the date of their last available PSA assessment or at the end of the study follow-up. PSA measurements will be obtained at 1 month after treatment and subsequently every 6 months through 48 months.

From the date of salvage brachytherapy to 48 months after treatment

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Baseline Characteristics
Tidsramme: Baseline, Day 0

Initial disease characteristics: Initial PSA, Gleason/Grade Group, Stage Biopsy characteristics, Initial imaging, Initial treatment.

Disease characteristics at recurrence: PSA at recurrence, prostate-specific antigen doubling time (PSADT), Location of recurrence, Recurrence biopsy, Urinary symptoms, Imaging findings

Baseline, Day 0
Incidence of Late and Chronic Treatment-Related Toxicity
Tidsramme: From 1 month after salvage brachytherapy to 48 months after treatment

Incidence and severity of late and chronic treatment-related toxicity following salvage brachytherapy, assessed according to the Common Terminology Criteria for Adverse Events (CTCAE), version 5.0. Toxicities will include genitourinary and gastrointestinal toxicities and other treatment-related adverse events identified during follow-up.

From 1 month after salvage brachytherapy to 48 months after treatment
Local Relapse-Free Survival
Tidsramme: From the date of salvage brachytherapy to 48 months after treatment

Time from salvage brachytherapy to radiologically confirmed local recurrence of prostate cancer. Local recurrence will be assessed using imaging techniques, including prostate MRI, choline PET, and/or PSMA PET, according to routine clinical practice. Patients without radiologically confirmed local recurrence will be censored at the date of their last available imaging assessment or at the end of the study follow-up.

From the date of salvage brachytherapy to 48 months after treatment
Incidence of Acute Treatment-Related Toxicity
Tidsramme: From the date of salvage brachytherapy to 1 month after treatment

Incidence and severity of acute treatment-related toxicity following salvage brachytherapy, assessed according to the Common Terminology Criteria for Adverse Events (CTCAE), version 5.0. Acute toxicity will include genitourinary and gastrointestinal toxicities and other treatment-related adverse events occurring during the acute post-treatment period.

From the date of salvage brachytherapy to 1 month after treatment
Change in International Prostate Symptom Score (IPSS) From Baseline
Tidsramme: Baseline and every 6 months after salvage brachytherapy through 48 months

Change in urinary symptoms assessed using the International Prostate Symptom Score (IPSS). The IPSS will be assessed before salvage brachytherapy and during follow-up every 6 months. The change from baseline will be evaluated over the study follow-up period.

Baseline and every 6 months after salvage brachytherapy through 48 months
Change in Prostate Cancer-Specific Quality of Life (FACT-P) From Baseline
Tidsramme: Baseline and every 6 months after salvage brachytherapy through 48 months

Change in health-related quality of life assessed using the Functional Assessment of Cancer Therapy-Prostate (FACT-P) questionnaire. The FACT-P is a 39-item questionnaire assessing health-related quality of life in patients with prostate cancer. The total score ranges from 0 to 156, with higher scores indicating better health-related quality of life. The questionnaire will be administered before salvage brachytherapy and during follow-up every 6 months. Changes from baseline in the FACT-P total score will be evaluated throughout the study follow-up period.

Baseline and every 6 months after salvage brachytherapy through 48 months
Change in Prostate Cancer-Specific Quality of Life (EORTC QLQ-PR25) From Baseline
Tidsramme: Baseline and every 6 months after salvage brachytherapy through 48 months

Change in prostate cancer-specific health-related quality of life assessed using the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire - Prostate Module (EORTC QLQ-PR25). The EORTC QLQ-PR25 consists of 25 items scored on a 0 to 100 scale after linear transformation. Higher scores indicate greater symptom burden for symptom scales and higher levels of functioning or activity for the sexual activity/function scales. The questionnaire will be administered before salvage brachytherapy and during follow-up every 6 months. Changes from baseline in the EORTC QLQ-PR25 scores will be evaluated throughout the study follow-up period..

Baseline and every 6 months after salvage brachytherapy through 48 months

Samarbejdspartnere og efterforskere

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

Sponsor

Efterforskere

  • Studieleder: Patricia Willisch Santamaría, MD PhD, Galicia Sur Health Research Institute
  • Studiestol: Pablo Raña Díez, Instituto de Investigación en Oncología Radioterápica - Fundación Española de Oncología Radioterápic

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)

11. marts 2026

Primær færdiggørelse (Anslået)

31. januar 2032

Studieafslutning (Anslået)

30. april 2032

Datoer for studieregistrering

Først indsendt

30. september 2026

Først indsendt, der opfyldte QC-kriterier

30. september 2026

Først opslået (Faktiske)

6. oktober 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

9. oktober 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

6. oktober 2026

Sidst verificeret

1. oktober 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • PROSCATE

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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 .