Clinical trial · Interventional
Daily, Long-Term Intermittent Fasting for the Prevention of PSA-Recurrence in Patients With Localized Prostate Cancer After Radical Prostatectomy
A Prospective Pilot Study Evaluating the Feasibility of Daily, Long-Term Intermittent Fasting for Men on PSA Surveillance Following Radical Prostatectomy for Localized, High-Risk Prostate Cancer
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Why stopped (as posted): No patient accrual
Summary
Brief summary (as posted)
This early phase I trial studies the feasibility of a daily, long-term intermittent fasting routine in preventing or delaying a rise in prostate specific antigen (PSA) levels in patients with prostate cancer that has not spread to other parts of the body (localized) and who have undergone radical prostatectomy. PSA is a protein produced by both normal and cancer cells. Following a daily fasting routine after treatment for prostate cancer may lower the risk of patients' PSA level rising above 0.4 ng/mL, which is also called PSA-recurrence. A PSA-recurrence can sometimes mean that the disease has returned and/or progressed.
Conditions
Conditions (9)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Stage IIA Prostate Cancer AJCC v8 | Malignant Prostate Neoplasm | CURATED_BROADER | 0.78 |
| Stage IIB Prostate Cancer AJCC v8 | Malignant Prostate Neoplasm | CURATED_BROADER | 0.78 |
| Stage IIC Prostate Cancer AJCC v8 | Malignant Prostate Neoplasm | CURATED_BROADER | 0.78 |
| Stage IIIA Prostate Cancer AJCC v8 | Malignant Prostate Neoplasm | CURATED_BROADER | 0.78 |
| Stage IIIB Prostate Cancer AJCC v8 | Malignant Prostate Neoplasm | CURATED_BROADER | 0.78 |
| Stage IIIC Prostate Cancer AJCC v8 | Malignant Prostate Neoplasm | CURATED_BROADER | 0.78 |
| Stage III Prostate Cancer AJCC v8 | Malignant Prostate Neoplasm |
Interventions
Interventions (3)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Food Diary | Other | — | UNRESOLVED |
| Preventative Dietary Intervention | Other | — | UNRESOLVED |
| Questionnaire Administration | Other | — | UNRESOLVED |
Design
Arms and outcomes
Arms (1)
- type
- EXPERIMENTAL
- label
- Prevention (intermittent fasting)
- description
- Beginning when patients' PSA is detectable up to 24 months after surgery, patients follow a daily intermittent fasting routine consisting of restricting the daily eating period to 8 hours (e.g. between 1PM-9PM) followed by 16 hours of prolonged nightly fasting for up to 1 year or until secondary therapy commences.
- interventionNames
- Other: Food Diary
- Other: Preventative Dietary Intervention
- Other: Questionnaire Administration
Primary outcomes (1)
- measure
- Adherence to the daily intermittent fasting regimen
- timeFrame
- Up to 1 year
- description
- Will be assessed via the phone surveys conducted at each remote follow up visit, as well as through analysis of the subjects' daily journals that will be sent back to the study team at the end of the study period.
Secondary outcomes (1)
Eligibility
Eligibility (as posted)
- Sex
- Male
- Minimum age
- 18 Years
Show eligibility criteria text
Inclusion Criteria: * Biopsy-proven histological diagnosis of localized prostate cancer (pT2 or specimen confined pT3) * Having undergone radical prostatectomy (open or laparoscopic) with bilateral pelvic lymph node dissection * Negative surgical margins on final specimen * Men that decline adjuvant therapy * Detectable serum PSA of 0.1 ng/mL or \> * 24 months or less since radical prostatectomy at time of study screening Exclusion Criteria: * Unable or unwilling to provide informed consent * Treated prior to surgery with any form of hormone, antiandrogen, or androgen deprivation therapy * Treated prior to surgery with any form of chemotherapy or radiotherapy * Medical conditions/history that precludes subjects from following a fasting regimen, including but not limited to: * Diabetes mellitus * On hormone therapy (Casodex, gonadotrophin releasing hormone \[GnRH\] agonist/antagonist)
References
Publications (0)
Data not yet available