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Active surveillance for favorable and intermediate risk prostate cancer (PRIAS-JAPAN)

Active surveillance for favorable and intermediate risk prostate cancer (PRIAS-JAPAN) - Active surveillance for prostate cancer (PRIAS-JAPAN)

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000048095
Enrollment
1900
Registered
2022-06-20
Start date
2022-03-31
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

prostate cancer

Interventions

active surveillance

Sponsors

Kagawa University
Lead Sponsor

Eligibility

Sex/Gender
Male

Inclusion criteria

Inclusion criteria: 1)Histologically proven adenocarcinoma of the prostate. 2)Men should be fit for curative treatment. 3) PSA level at diagnosis 10 ng/mL or less, or 20 ng/mL or less if MRI is used at diagnosis or during follow up 4) PSA density (PSA D) less than 0.2, or if MRI is used and negative or if targeted biopsies show no more than Gleason score 3+3 or 3+4 without invasive cribriform and intraductal carcinoma (CR/IDC) PSA D of less than 0.25 is acceptable. Patients with a PSA D more than 0.25 at inclusion can be followed outside the actual PRIAS protocol. 5) Clinical stage T1C or T2. 6) Gleason score 3+3=6 or Gleason score 3+4 without invasive CR/IDC. Total number of positive cores allowed: a. If an MRI, including targeted biopsies on positive lesions, is done at inclusion, there is no limit in the number of positive cores (that is, more than two, and no limit in the % of cancer present in the cores). b. If saturation biopsies (either transperineal or transrectal) are done 15% of the cores can be positive with a maximum of 4. (i.e. less than 20 cores: 2 cores can be positive (standard), 20-26 cores: 3 cores can be positive, more than 26 cores: 4 cores can be positive) (all other inclusion criteria still apply). c. If more than 2 TRUS-guided biopsy cores are positive (Gleason score 3+3 or 3+4 without CR/IDC) an MRI is indicated. If the MRI is negative or if targeted biopsies show no more than Gleason score 3+3=6 or 3+4=7 without invasive CR/IDC, inclusion is possible. d. For patients with adenocarcinoma Gleason score 3+4 without invasive CR/IDC, the maximum number of positive cores should be less than 50%, where multiple positive cores from the same lesion on MRI count for one positive core. 7) Participants must be willing to attend the follow-up visits. 8) Signed informed consent

Exclusion criteria

Exclusion criteria: 1) Men who can not or do not want to be radiated or operated. 2) A former therapy for prostate cancer. 3) For patients with a life expectancy <10yrs

Design outcomes

Primary

MeasureTime frame
metastasis-free survival

Secondary

MeasureTime frame
cancer-specific survival, the rate of reclassification, continuation rate of active surveillance, Quality Of Life(QOL)

Countries

Japan

Contacts

Public ContactTakuma Kato

Kagawa University Department of Urology

kato.takuma@kagawa-u.ac.jp0878985111

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026