Clinical trial · Interventional
Phase I Study MR-guided SBRT to PCa
Phase I Study Of MR-guided Stereotactic Body Radiotherapy (SBRT) With Simultaneous Integrated Boost (SIB) To the Dominant Intraprostatic Lesion(s) (DILs) in Men With Localized Prostate Cancer
NCT03935308CI-TRIAL-00056766MRgRTPCawithdrawnN/AClinicalTrials.gov clinicaltrialsProvenance
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Why stopped (as posted): The principal investigator left the institution.
Summary
Brief summary (as posted)
1\) investigate the feasibility, tolerance, and safety of dose escalation via MR-guided stereotactic body radiation therapy and simultaneous integrated boost to the dominant intraprostatic lesions (DILs), 2) to assess the feasibility of DIL visualization based on multi-parametric MRI (mpMRI), and 3) to characterize longitudinal changes in imaging characteristics and identify urinary biomarkers for treatment response prediction
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Low or Intermediate Risk Prostate Cancer | — | UNRESOLVED | — |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| MR guided Linear Accelerator | Radiation | — | UNRESOLVED |
Design
Arms and outcomes
Arms (1)
- type
- EXPERIMENTAL
- label
- MR-guided SBRT With SIB to the DILs to Prostate Cancer
- description
- Dose escalation to the DIL(s) will be performed in the traditional Phase I 3+3 design. Patients will be treated in four cohorts (three patients per dose level) starting with a dose of 9 Gy to the DIL(s). If no dose limiting toxicity (DLT), defined below, is observed after 90 days, then an additional three patients will be entered at the next dose level. Dose to the DIL(s) will be escalated at 1 Gy increments until DLT is observed or if maximum dose level (60 Gy in 5 fractions of 12 Gy) is reached with no observed DLT. If one of the three patients experience a DLT at a particular dose level an additional three patients will be enrolled at that level. If two or more patients experience a DLT a lower dose level will be explored to define the maximum tolerated dose (MTD). The three patients within any cohort can be enrolled simultaneously or sequentially without any waiting period among them.
- interventionNames
- Radiation: MR guided Linear Accelerator
Primary outcomes (1)
- measure
- Determine the maximum tolerated dose to DILs until dose limiting toxicity (>=3 grade 3 GI/GU toxicity) is observed or if maximum dose level is reached
- timeFrame
- 2 years
- description
Eligibility
Eligibility (as posted)
- Sex
- Male
- Minimum age
- 18 Years
Show eligibility criteria text
Inclusion Criteria: * Histologically confirmed prostate adenocarcinoma. * Patients with low or favorable intermediate risk prostate cancer and patients with unfavorable intermediate risk prostate cancer who decline androgen deprivation therapy * Pretreatment evaluations must be completed as specified in Section 4.0 * Patients must sign a study-specific informed consent form prior to study participation. * No contraindication to MRI. For example, patients with metal fragments or implanted devices such as pacemakers and aneurysm clips may not be eligible for the study * At least one intraprostatic lesion can be identified on the mpMR images. * Patients agree to have hydrogel placed. Exclusion Criteria: * Patients who have a contraindication to contrast-enhanced MRI are not eligible. Patients with an implanted device such as a pacemaker or metal fragments are not eligible.
References
Publications (4)
- BACKGROUNDDearnaley DP, Sydes MR, Graham JD, Aird EG, Bottomley D, Cowan RA, Huddart RA, Jose CC, Matthews JH, Millar J, Moore AR, Morgan RC, Russell JM, Scrase CD, Stephens RJ, Syndikus I, Parmar MK; RT01 collaborators. Escalated-dose versus standard-dose conformal radiotherapy in prostate cancer: first results from the MRC RT01 randomised controlled trial. Lancet Oncol. 2007 Jun;8(6):475-87. doi: 10.1016/S1470-2045(07)70143-2. PMID 17482880
- BACKGROUNDCatton CN, Lukka H, Gu CS, Martin JM, Supiot S, Chung PWM, Bauman GS, Bahary JP, Ahmed S, Cheung P, Tai KH, Wu JS, Parliament MB, Tsakiridis T, Corbett TB, Tang C, Dayes IS, Warde P, Craig TK, Julian JA, Levine MN. Randomized Trial of a Hypofractionated Radiation Regimen for the Treatment of Localized Prostate Cancer. J Clin Oncol. 2017 Jun 10;35(17):1884-1890. doi: 10.1200/JCO.2016.71.7397. Epub 2017 Mar 15. PMID 28296582
- BACKGROUNDPucar D, Hricak H, Shukla-Dave A, Kuroiwa K, Drobnjak M, Eastham J, Scardino PT, Zelefsky MJ. Clinically significant prostate cancer local recurrence after radiation therapy occurs at the site of primary tumor: magnetic resonance imaging and step-section pathology evidence. Int J Radiat Oncol Biol Phys. 2007 Sep 1;69(1):62-9. doi: 10.1016/j.ijrobp.2007.03.065. PMID 17707266
- BACKGROUNDTurkbey B, Mani H, Shah V, Rastinehad AR, Bernardo M, Pohida T, Pang Y, Daar D, Benjamin C, McKinney YL, Trivedi H, Chua C, Bratslavsky G, Shih JH, Linehan WM, Merino MJ, Choyke PL, Pinto PA. Multiparametric 3T prostate magnetic resonance imaging to detect cancer: histopathological correlation using prostatectomy specimens processed in customized magnetic resonance imaging based molds. J Urol. 2011 Nov;186(5):1818-24. doi: 10.1016/j.juro.2011.07.013. Epub 2011 Sep 25. PMID 21944089