Clinical trial · Interventional
Detection of Clinically Significant Prostate Cancer Using Transperineal Targeted Biopsy Compared to Standard Transrectal Biopsy
Assessing the Detection of Clinically Significant Prostate Cancer Using Magnetic Resonance Imaging-Guided Transperineal Targeted Biopsy Compared to Standard Transrectal Biopsy Outcomes Study: The ASTROS Trial
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
Prostate biopsies are currently the gold standard for the diagnosis of prostate cancer. Many biopsies, however, are unnecessary or cannot detect significant prostate cancer (PCa). With multi-parametric magnetic resonance imaging (mpMRI) we now potentially have a way of increasing the detection of detecting clinically significant prostate cancer (csPCa) while decreasing the detection of non-significant PCa.
Conditions
Conditions (6)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Clinically Significant Prostate Cancer | — | UNRESOLVED | — |
| Fusion Biopsy | — | UNRESOLVED | — |
| Magnetic Resonance Imaging | — | UNRESOLVED | — |
| Prostate Cancer | Malignant Prostate Neoplasm | CURATED_EXACT | 0.92 |
| Target Lesion | — | UNRESOLVED | — |
| Transperineal | — | UNRESOLVED | — |
Interventions
Interventions (2)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| MRI/ultrasound transperineal prostate biopsy | Device | — | UNRESOLVED |
| transrectal ultrasound-guided prostate biopsy | Device | — | UNRESOLVED |
Design
Arms and outcomes
Arms (2)
- type
- EXPERIMENTAL
- label
- MRI/ultrasound transperineal prostate biopsy
- description
- In arm A, all patients with positive mpMRI evidence of lesions suspicious for PCa, i.e. PI RADS ≥ 3 will be submitted to transperineal mpMRI-targeted prostate biopsy (arm A MRI+). The gland and the regions of interest will be contoured, and the prostate contour will be fused in real time with the TRUS image. Biopsies will be performed via a transperineal approach in the operating room. The patient will be placed in dorsal lithotomy position. mpMRI-targeted biopsies will be performed on regions of interest, and three to six cores will be obtained for biopsy from each lesion and is standard of care according to START criteria for targeted biopsy. In cases of negative mpMRI results i.e. PI RADS\<3, arm A patients will undergo TRUS-guided transrectal 12-core prostate biopsy (arm A MRI-) as described in arm B.
- interventionNames
- Device: MRI/ultrasound transperineal prostate biopsy
- type
- ACTIVE_COMPARATOR
- label
- transrectal ultrasound-guided prostate biopsy
- description
- TRUS-guided transrectal prostate biopsy will be performed using a disposable 18-gauge biopsy gun with a specimen size of 18-22 mm (Bard Medical, Covington, GA, USA). The 12 cores will be obtained from 12 separate anatomical regions of the prostate which is standard practice in performing TRUS-guided transrectal prostate biopsy: left medial apex, left lateral apex, left medial midgland, left lateral midgland, left medial base, left lateral base, right medial apex, right lateral apex, right medial midgland, right lateral midgland, right medial base and right lateral base.
Eligibility
Eligibility (as posted)
- Sex
- Male
- Minimum age
- 18 Years
- Maximum age
- 75 Years
Show eligibility criteria text
Inclusion Criteria: 1. Males aged 18-75 years old 2. PSA \>1 ng/ml but \<15 ng/ml 3. Negative DRE 4. Signed informed consent Exclusion Criteria: 1. Previous prostate biopsy or prostate surgery 2. Previous prostate mpMRI 3. Contraindication to mpMRI: patients with pacemakers, defibrillators or other implanted electronic devices 4. Patients in the Texas Department of Criminal Justice (prisoners) 5. Patients with acute urinary symptoms including urinary retention and urinary tract infection
References
Publications (1)
- DERIVEDKosarek CD, Mahmoud AM, Eyzaguirre EJ, Shan Y, Walser EM, Horn GL, Williams SB. Initial series of magnetic resonance imaging (MRI)-fusion targeted prostate biopsy using the first transperineal targeted platform available in the USA. BJU Int. 2018 Nov;122(5):909-912. doi: 10.1111/bju.14206. Epub 2018 Apr 14. PMID 29569311