Multivariate Risk Assessment for ISUP =2 Prostate Cancer Clinical Trial
— PCaRiskOfficial title:
External Validation of the Rotterdam Prostate Cancer Risk Calculator
| Verified date | July 2020 |
| Source | Hospices Civils de Lyon |
| Contact | n/a |
| Is FDA regulated | No |
| Health authority | |
| Study type | Observational |
Prostate multiparametric MRI (mpMRI) can detect ISUP ≥2 prostate cancer with high
sensitivity. Adding biopsies targeting suspicious lesions seen on mpMRI to the classical
'systematic biopsies' (that sample the gland in a blinded way) improves the detection of ISUP
≥2 cancers. As a result, it is now recommended to perform a prostate mpMRI before biopsy and
to combine targeted and systematic biopsy.
However, mpMRI suffers from a lack of specificity. In a recent meta-analysis, the pooled
sensitivity and specificity of prostate mpMRI for detecting ISUP ≥2 cancers were 0.91 (95%
confidence interval, 0.83-0.95) and 0.37 (95% confidence interval, 0.29-0.46) respectively.
Thus, accurate triage of patients suitable for biopsy might not be possible using mpMRI
findings alone.
The Rotterdam Prostate Cancer Risk Calculator (RPCRC) combines mpMRI results (Prostate
Imaging-Reporting And Database System score) and basic clinical and biochemical data to
predict the results of prostate biopsy. If validated, this tool could help selecting patients
for prostate biopsy.
In this study, the investigators propose to retrospectively use the data of the prospective
multicentric MRI-FIRST trial (NCT0285379) to perform an external validation of the RPCRC.
In addition, the PCaRisk study has two secondary objectives:
- To confirm that Prostate Specific Antigen density (i.e. PSA level divided by prostate
volume) can stratify the risk of ISUP ≥2 cancer in patients with negative (PI-RADS 1-2)
or inconclusive (PI-RADS 3) mpMRI, as suggested by recent literature
- To perform a preliminary evaluation of a lobe-specific risk calculator developed by our
group and combining mpMRI results and clinical and biochemical data to predict the risk
of ISUP ≥2 cancer at the lobe level.
| Status | Active, not recruiting |
| Enrollment | 275 |
| Est. completion date | September 1, 2020 |
| Est. primary completion date | April 1, 2020 |
| Accepts healthy volunteers | No |
| Gender | Male |
| Age group | 18 Years to 75 Years |
| Eligibility |
Inclusion Criteria: - Patient referred for mpMRI and prostate biopsy due to increased PSA level, abnormal DRE or family history of prostate cancer. - Age =75 years - PSA level =20 ng/mL - Clinical stage =T2c Exclusion Criteria: - Contraindication for prostate mpMRI or biopsy - History of hip prosthesis, androgen deprivation therapy, pelvic radiotherapy or prostate cancer diagnosed after trans-urethral resection of the prostate. |
| Country | Name | City | State |
|---|---|---|---|
| France | Department of Radiology, Hôpital Edouard Herriot, Hospices Civils de Lyon | Lyon |
| Lead Sponsor | Collaborator |
|---|---|
| Hospices Civils de Lyon |
France,
| Type | Measure | Description | Time frame | Safety issue |
|---|---|---|---|---|
| Primary | Comparison of the Area Under Curve of the PI-RADS score and the RPCRC (significant cancer risk) for predicting ISUP =2 cancer at subsequent biopsy. | The AUC of the PI-RADS score and the RPCRC significant cancer risk will be calculated at the patient level. | June 2020 | |
| Secondary | Comparison of the AUC of the PI-RADS score and the RPCRC (detectable cancer risk) for predicting ISUP =2 cancer at subsequent biopsy. | The AUC of the Prostate Imaging-Reporting And Data System score and the RPCRC detectable cancer risk will be calculated at the patient level. | June 2020 | |
| Secondary | Number of avoided biopsies, missed ISUP 1 cancers and missed ISUP =2 cancers if PIRADS cut-off values of =3 and =4 were used as biopsy triggers | June 2020 | ||
| Secondary | Number of avoided biopsies, missed ISUP 1 cancers and missed ISUP =2 cancers if RPCRC detectable cancer risk cut-off values of =12.5% and =20% were used as biopsy triggers | June 2020 | ||
| Secondary | Number of avoided biopsies, missed ISUP 1 cancers and missed ISUP =2 cancers if RPCRC significant cancer risk cut-off value of =4% was used as biopsy trigger | June 2020 | ||
| Secondary | Number of avoided biopsies, missed ISUP 1 cancers and missed ISUP =2 cancers if biopsy was performed only in patients with a RPCRC detectable cancer risk =20%, or with a RPCRC detectable cancer risk =12.5% and a RPCRC significant cancer risk =4% | June 2020 | ||
| Secondary | AUC of PSA density in predicting ISUP =2 cancer at subsequent biopsy. | June 2020 | ||
| Secondary | Number of avoided biopsies, missed ISUP 1 cancers and missed ISUP =2 cancers if PSA density cut-off values of =0.15 ng/ml² and =0.20 ng/ml² were used as biopsy triggers | June 2020 | ||
| Secondary | Number of avoided biopsies, missed ISUP 1 cancers and missed ISUP =2 cancers if biopsy was performed only in patients with a PI-RADS score =4, or with a PI-RADS score =3 and a PSA density =0.15 ng/ml² | June 2020 | ||
| Secondary | Number of avoided biopsies, missed ISUP 1 cancers and missed ISUP =2 cancers if biopsy was performed only in patients with a PI-RADS score =4, or with a PI-RADS score =3 and a PSA density =0.20 ng/ml² | June 2020 | ||
| Secondary | Net benefice (Decision curve analysis) for cut-off values of =12.5% and =20% for the RPCRC detectable cancer risk, of =4% for the RPCRC significant cancer risk, and of =0.15 ng/ml² and =0.20 ng/ml² for PSA density. | June 2020 | ||
| Secondary | AUC of the lobe-specific risk calculator developed by our group for predicting ISUP =2 cancer at subsequent biopsy. | June 2020 | ||
| Secondary | Number of avoided biopsies, missed ISUP 1 cancers and ISUP =2 cancers (at patient level) if only lobes with a lobe-specific risk of having ISUP =2 cancers =5%, =10% and =15% were biopsied. | June 2020 |