- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03486821
Ultra-hypofractionated Radiation in Prostate Cancer
Pilot Trial of Ultra-hypofractionated Radiation in Early Prostate Cancer
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
This is a pilot clinical trial looking at 2 fraction SBRT radiation therapy as an alternative to standard of care. Data does not yet exist for the safety and efficacy of this regimen.
However, the feasibility of ultra-short radiation therapy treatments has already been demonstrated in an analogous treatment using high-dose rate (HDR) brachytherapy. HDR brachytherapy has been adopted at high volume cancers centers as a standard treatment for prostate cancer. Typical doses have been 26 - 27 Gy over 2 fractions (13 or 13.5 Gy per fraction). Overall, toxicity and efficacy of HDR brachytherapy have compared favorably to other treatment modalities.
Dosimetric planning models between SBRT and HDR brachytherapy suggest minor differences. HDR brachytherapy was able to achieve higher intraprostatic maximum doses and lower rectal doses, but target volume coverage and urethral dose was not significantly different. These data suggest that reducing SBRT treatments from 5 fractions to 2 fractions may be feasible, efficacious and tolerable.
Eligible patients include all patients who are otherwise eligible for standard 5 fraction SBRT prostate. Study population will be low and intermediate patients with good urinary function (as defined by small prostate volume and low IPSS score). SBRT treatment will be delivered to the prostate to 12.5 Gy x 2 fractions.
Hormonal therapy is permitted on this study. Permitted agents include: leuprolide (Lupron/Eligard), biclutamide (Casodex), and degarelix (Firmagon).
Rectal sparing with hydrogel spacer (SpaceOAR) will be encouraged.
All patients will be enrolled with interim safety analyses after every occurrence of a grade 3 acute or late toxicity. Interval safety analysis will also be performed for recurrence and decrease in EPIC GU domain quality of life. Biospecimen and financial toxicity data will also be collected.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Tina K Livingood
- Phone Number: 913-574-0015
- Email: clivingood@kumc.edu
Study Locations
-
-
Kansas
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Kansas City, Kansas, United States, 66190
- University of Kansas Medical Center/ Cancer Center
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Ability of participant to sign a written informed consent.
- Diagnosed with prostate cancer, T1-T2bN0M0 GS6-7, PSA < 20
- IPSS score < 15 (and < 10 if on medication for benign prostatic hypertrophy such as tamsulosin) at time of enrollment (Appendix 21.4)
- Prostate volume (by US, CT or MRI measurement) < 50 cc at time of enrollment
- Androgen deprivation therapy based on clinician judgment is permitted on study
- Life expectancy > 10 years based on clinician's judgment
- No other active malignancy
- Age ≥ 18 years
- Performance Status Eastern Cooperative Oncology Group (ECOG) 0-1 (Appendix 21.5).
- Other study-specific criteria:
- Men of child-bearing potential must not donate sperm while on this study and for 90 days after their last study treatment.
NOTE: Acceptable forms of birth control are listed below:
- One Barrier method (cervical cap with spermicide plus male condom; diaphragm with spermicide plus male condom) PLUS
- Hormonal method (oral contraceptives, implants, or injections) or an intrauterine device (e.g., Copper-T).
Exclusion Criteria:
- Current or anticipated use of other investigational agents while participating in this study.
- Psychiatric illness/social situations that would limit compliance with study requirements
- Prior pelvic radiation therapy
- Prior prostatectomy
- Inflammatory bowel disease or connective tissue disease requiring medical management
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Hypofrac Radiation Therapy
All patients on this study will receive the same type of therapy, 2 treatment hypofractionated radiation therapy. Radiation treatment will start approximately 1-2 weeks after the simulation scan. Prior to each treatment, you will be asked to have a full bladder and empty rectum. You will be asked to take a liquid diet starting the afternoon prior to each treatment, and a laxative (such as Miralax) in the evening prior to each treatment. You will also be asked to take a Fleet's enema about 1 hours prior to the treatment time to ensure that the rectum is empty. To ensure full bladder, you will be asked to drink about 32 oz of water after the enema. This is the same procedure as above for the prep before the simulation scan. Each treatment should take about 10-20 minutes. |
All patients on this study will receive the same type of therapy, 2 treatment hypofractionated radiation therapy.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Toxicity Rates
Time Frame: up to 5 year post radiation
|
Patient reported urinary function, as defined by the EPIC-26 GU domain patient reported outcome for prostate cancer patients
|
up to 5 year post radiation
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Biochemical Control Rate
Time Frame: 1 month post-Radiation Therapy (RT), every 3 months- post RT for the first year and then every 6 months post RT for the next 4 years
|
Biochemical freedom from progression as defined by ASTRO Phoenix criteria at 3 years
|
1 month post-Radiation Therapy (RT), every 3 months- post RT for the first year and then every 6 months post RT for the next 4 years
|
Radiation Therapy Oncology Group (RTOG) Late Toxicity Rate
Time Frame: 3 year
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Rate of Grade 3+ gastrointestinal (GI) or genitourinary (GU) late toxicity at 3 years as defined by RTOG late toxicity scored on a 1 to 4 scale with a higher value representing a worse outcome.
|
3 year
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RTOG Acute Toxicity Rate
Time Frame: 90 days
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Rate of Grade 2+ GI or GU acute toxicity within 90 days of treatment as defined by RTOG acute toxicity scored on a 1 to 4 scale with a higher value representing a worse outcome.
|
90 days
|
Oxidative stress as a predictor of toxicity
Time Frame: 1 month post-RT, every 3 months- post RT for the first year and then every 6 months post RT for the next 4 years
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exploring the oxidative stress markers of the patient to use as a predictor of acute and late toxicty
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1 month post-RT, every 3 months- post RT for the first year and then every 6 months post RT for the next 4 years
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Financial Toxicity Measurement
Time Frame: 3 months, 6 months, and 12 month visits only
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Determined by evaluation of patient completion of questionnaire
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3 months, 6 months, and 12 month visits only
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Collaborators and Investigators
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- IIT-2017-PROS-UltraHypoFracRT
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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