NCT07751133RecruitingPhase 3
Evaluating Hormone Therapy to Achieve Optimal Doses in Metastatic Prostate Cancer
Source: ClinicalTrials.gov · Last updated 4 Nov 2026
Brief summary (registry, in English)
The goal of this phase 3 clinical trial is to determine the clinical effectiveness and cost effectiveness of using lower doses of Androgen Receptor Pathway Inhibitors (ARPI) to treat patients with prostate cancer that has spread (metastasized). The main questions it aims to answer are: 1. if overall survival for reduced dose ARPI is not worse than standard dose ARPI when treating patients with metastatic prostate cancer, and 2. that fatigue (extreme exhaustion) and not stopping ARPI permanently (due to adverse effects) are better than average with the reduced dose. Participants will: * Be randomised to take full dose (100%) of ARPI or half dose (50%) of ARPI. * Receive standard of care ADT. * Be on treatment for approximately 3 years according to standard of care. * Have clinic assessments and visits in clinic or remotely, as per their treating hospital's standard routine local practice in line with standard of care. Additional visits are not expected. * Complete quality of life questionnaires at week 0 (pre-treatment) and weeks 4, 16, 32, 48 and 64. * Keep a diary of their symptoms. Translational research samples will be collected as follows: * Blood samples at week 0 (pre-treatment) and weeks 24, 32, 48 and at disease progression. * Urine samples at week 0 (pre-treatment) and week 24 and at disease progression. * FFPE Tumour: Routinely collected diagnostic blocks. The duration of follow-up is approximately 3 years after the last patient is recruited (minimum follow-up is 3 years; maximum follow-up is approximately 6 years for the the first patient recruited) and the trial is expected to complete August 2032 (Last Patient Last Visit).
- Status (registry)
- Recruiting
- Phase (registry)
- Phase 3
- Study type
- Interventional
- Enrollment
- 1500 (estimated)
- First submitted
- 25 Jul 2026
- Start date
- 28 Aug 2026
- Primary completion date
- 1 Aug 2029
- Lead sponsor
- University College, London
- Diseases
- Prostate cancer
- NCT number
- NCT07751133
What you commit to
- Study type: Interventional · Phase 3
- Planned participants: 1500
- From 28 Aug 2026 to the primary completion date, 1 Aug 2029
- 4 sites in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Unable or unwilling to receive concurrent ADT alongside an ARPI
- Patients who have received an investigational drug (either approved or not approved) in any prior clinical study within 30 days or 5 half-lives (whichever is longer) prior to Screening
- Patients on triplet therapy (i.e. receiving additional systemic anti-cancer therapy such as chemotherapy, radionuclide/molecular radiotherapy, PARPi alongside ADT \& ARPI); but concomitant radiotherapy is allowed
Other illness
- Any concurrent or previous malignancy that required active anti-cancer therapy in the previous 2 years of randomisation (other than basal cell or squamous cell carcinoma of the skin or adequately treated non-muscle invasive urothelial bladder carcinoma, Tis, Ta and T1 tumours)
- Adults with unmanaged psychological, familial, or sociological conditions precluding them from the ability to provide informed consent or hampering compliance with the study follow-up, including continued drug and alcohol dependence
- Hypersensitivity to any of the active components or excipients of the IMPs or NIMPs listed in this protocol
- Patients with severe hepatic impairment (Child-Pugh Class C)
- Patients with uncontrolled or unstable cardiovascular disease, New York Heart Association congestive cardiac failure class III/IV
Other
- Pathology other than adenocarcinoma consistent with small cell, ductal, sarcomatoid carcinoma of the prostate
Who the study is looking for
- Adult males (male sex at birth) aged 18 years or older
- Newly histologically or cytologically diagnosed prostate cancer (adenocarcinoma) that is metastatic hormone-sensitive (mHSPC) or metastatic castration resistant prostate cancer (mCRPC), for whom ARPI in combination with androgen deprivation is clinically planned
- Prior ADT use for prostate cancer (including bilateral orchidectomy and transcutaneous oestrogen), is permitted provided: (a) ADT has been started less than 12 weeks prior to randomisation in mHSPC, (b) In the adjuvant setting the completion of adjuvant hormonal therapy was \>12 months prior to randomisation and total duration is capped at 36 months total
- ECOG performance status 0-2
- Willing and able to give provide written informed consent.
Age in the registry: 18 years to - · Sex: Male · Does not accept healthy volunteers
Sites (4)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Calderdale and Huddersfield NHS Foundation Trust Coordinator of this site? Confirm its status | Huddersfield | United Kingdom | Recruiting |
| University Hospitals of Leicester NHS Trust Coordinator of this site? Confirm its status | Huddersfield | United Kingdom | Recruiting |
| The Christie NHS Foundation Trust Coordinator of this site? Confirm its status | Manchester | United Kingdom | Recruiting |
| The Royal Marsden NHS Foundation Trust Coordinator of this site? Confirm its status | Sutton | United Kingdom | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.