Protons Vs. Photons for High-risk Prostate Cancer

NCT ID: NCT05350475

Last Updated: 2025-03-07

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

400 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-03-01

Study Completion Date

2037-03-01

Brief Summary

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The purpose of this study is to assess late gastro-intestinal side-effects comparing proton therapy to photon therapy in high-risk prostate cancer patients receiving whole pelvic irradiation.

Detailed Description

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Proton therapy (PT) is a radiation technique with possibility to spare normal pelvic organs: bladder, rectum and bowel for PC patients.

Most PC patients treated with PT receive PT to the prostate gland alone. With PT, we aim to examine PC patients in high risk with both lymph node and prostate treatment will experience less late side effects with PT compared to photon treatment.

The investigators propose a national open-labelled phase III randomized controlled trial (RCT) of proton therapy versus photon therapy of the prostate including the regional elective LN for localized/locally advanced prostate cancer patients combined with androgen deprivation therapy (ADT) aimed at 3 years. The investigators aim at reducing gastro-intestinal toxicity grad 2 more than 5 points, which is considered clinical significant, measured by mean Expanded Prostate Cancer Index Composite-26 (EPIC-26) bowel scores at 24 months and improve HRQOL. Secondary endpoints include morbidity, quality of life and survival data up to 10 years after treatment.

Conditions

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Prostate Cancer Radiotherapy Side Effect

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

A randomized phase 3 study, randomizing 1:1 between photon vs. proton therapy for prostate cancer patients with high risk disease
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Proton therapy

Radiation: Proton Therapy 78 Gray (Gy) in 39 fractions with 56 Gy to the Pelvic Lymph Nodes (LN), 5 days a week.

Androgen Deprivation Therapy (ADT) for three years, starting 3 months before Proton Therapy.

Group Type EXPERIMENTAL

Proton therapy

Intervention Type RADIATION

Patients in the experimental arm will receive proton therapy within the same dose and fraction schedule as patients receiving photon therapy, which is standard treatment.

Photon Therapy

Radiation: Photon Therapy 78 Gy in 39 fractions with 56 Gy to the pelvic LN, 5 days a week. ADT for three years, starting 3 months before Photon Therapy.

Group Type ACTIVE_COMPARATOR

Photon therapy

Intervention Type RADIATION

Patients in the photon arm will receive standard treatment with photon therapy.

Interventions

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Proton therapy

Patients in the experimental arm will receive proton therapy within the same dose and fraction schedule as patients receiving photon therapy, which is standard treatment.

Intervention Type RADIATION

Photon therapy

Patients in the photon arm will receive standard treatment with photon therapy.

Intervention Type RADIATION

Eligibility Criteria

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Inclusion Criteria

* Histologically verified localized/locally advanced prostate cancer T1-3bN0-1M0 (TNM 8th edition). A clinical T4 is allowed if it is because of invasion into the bladder neck.
* Adenocarcinoma (mixed histology allowed as long as the adenocarcinoma component comprise more than 50%)
* Indication for elective lymph node irradiation
* PSA \< 100 ng/mL
* Age ≥18 years
* Performance status 0-1
* Life expectancy ≥ 10 years
* Able to understand and comply with the treatment protocol
* No evidence of inflammatory bowel disease Ability to adhere to procedures for study and follow-up
* Signed informed consent to participate in the study

Exclusion Criteria

* No previous treatment for prostate cancer
* Hip-prostheses
* Other metal devices in the pelvic region (except fiducials)
* Previous major abdominal/rectal surgery
* Any other malignancy the last five years except for basal or squamous cell skin cancer
* Unable to understand patient information or comply with treatment and safety instructions
* Unable to read and understand patient information due to cognitive disabilities or language (Danish).
Minimum Eligible Age

18 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

No

Sponsors

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Rigshospitalet, Denmark

OTHER

Sponsor Role collaborator

Odense University Hospital

OTHER

Sponsor Role collaborator

Aarhus University Hospital

OTHER

Sponsor Role collaborator

Aalborg University Hospital

OTHER

Sponsor Role collaborator

Sygehus Lillebaelt

OTHER

Sponsor Role collaborator

Herlev and Gentofte Hospital

OTHER

Sponsor Role collaborator

Naestved Hospital

OTHER

Sponsor Role collaborator

University of Aarhus

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Stine Elleberg Petersen, MD, Ph.D

Role: PRINCIPAL_INVESTIGATOR

Danish Centre for Particle Therapy, Aarhus University Hospital

Locations

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Dept. of Oncology, Rigshospitalet, Denmark

Copenhagen, Capital Region, Denmark

Site Status NOT_YET_RECRUITING

Department of Oncology, Copenhagen University Hospital Herlev

Herlev, Capital Region, Denmark

Site Status RECRUITING

Department of Oncology, Aarhus University Hospital

Aarhus, Central Region, Denmark

Site Status RECRUITING

Dept. of Oncology, Aalborg University Hospital

Aalborg, Region North, Denmark

Site Status RECRUITING

Dept. of Oncology, Zealand University Hospital, Denmark

Næstved, Region Sjælland, Denmark

Site Status RECRUITING

Department of Oncology, Odense University Hospital

Odense, Region South, Denmark

Site Status NOT_YET_RECRUITING

Department of Oncology, Vejle Hospital, Denmark

Vejle, Region South, Denmark

Site Status RECRUITING

Countries

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Denmark

Central Contacts

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Stine Elleberg Petersen, MD, Ph.D

Role: CONTACT

+4529474408

Facility Contacts

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Peter Petersen, MD. Ph.D

Role: primary

+45 51260739

Henriette LIndberg, MD.Ph.D

Role: primary

+45 38689597

Anders Vittrup, MD. Ph.D

Role: primary

Jimmi Søndergaard, MD, Ph.D

Role: primary

Anne Juel Christensen, MD. Ph.D

Role: primary

Steinbjørn Hansen, MD.Ph.D

Role: primary

+45 6541 3988

Christine Madsen, MD Ph.D

Role: primary

Other Identifiers

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1-10-72-290-21

Identifier Type: -

Identifier Source: org_study_id

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