Intensity-Modulated Radiation Therapy in Treating Patients With Localized Prostate Cancer
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|ClinicalTrials.gov Identifier: NCT00392535|
Recruitment Status : Active, not recruiting
First Posted : October 26, 2006
Last Update Posted : February 27, 2019
RATIONALE: Specialized radiation therapy that delivers a high dose of radiation directly to the tumor may kill more tumor cells and cause less damage to normal tissue. It is not yet known which schedule of intensity-modulated radiation therapy is more effective in treating patients with prostate cancer.
PURPOSE: This randomized phase III trial is studying the side effects of three schedules of intensity-modulated radiation therapy and compares how well they work in treating patients with localized prostate cancer.
|Condition or disease||Intervention/treatment||Phase|
|Prostate Cancer||Radiation: conventional radiotherapy 74 Gy delivered in 37 fractions Radiation: hypofractionated radiation therapy 60 Gy in 20 fractions Radiation: hypofractionated radiation therapy 57 Gy in 19 fractions||Not Applicable|
- Determine the safety and efficacy of conventional vs hypofractionated high-dose intensity-modulated radiotherapy in patients with localized prostate cancer.
- Determine the side effects of these regimens in these patients.
- Determine whether hypofractionated radiotherapy schedules will improve the therapeutic ratio by either improving tumor control or reducing normal tissue side effects.
- Compare acute and late treatment-related gastrointestinal and urological toxicity in these patients.
- Determine different prostate-specific antigen-related endpoints for local failure and distant metastases.
- Extend the database of patients treated to escalated doses with dose-volume histograms (DVHs) of normal tissues at risk and relate these to common toxicity endpoints.
- Develop a model to estimate normal tissue complication probability (NTCP) of rectum and bladder for hypofractionated as well as conventional dose-escalated radiotherapy schedules.
OUTLINE: This is a multicenter, randomized, pilot study. Patients are stratified according to risk of seminal vesicle involvement (low-risk vs moderate-risk or high-risk).
- Hormone therapy: Patients receive androgen-deprivation therapy comprising an injection of luteinizing hormone-releasing hormone (LHRH) agonist once monthly for 3-6 months and oral cyproterone acetate beginning the week before the first LHRH agonist injection and continuing for at least 2 weeks after each LHRH agonist injection. Within one week after the last LHRH agonist injection, patients proceed to radiotherapy.
Radiotherapy: Patients are randomized to 1 of 3 treatment arms.
- Arm I: Patients undergo conventional high-dose intensity-modulated radiotherapy (IMRT) in 37 fractions over 7.5 weeks.
- Arm II: Patients undergo hypofractionated high-dose IMRT in 20 fractions over 4 weeks.
- Arm III: Patients undergo hypofractionated high-dose IMRT in 19 fractions over 3.8 weeks.
In all arms, treatment continues in the absence of unacceptable toxicity.
Quality of life is assessed periodically during study treatment.
After completion of study treatment, patients are followed periodically for up to 15 years.
Peer Reviewed and Funded or Endorsed by Cancer Research UK
PROJECTED ACCRUAL: A total of 2,163 patients will be accrued for this study.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||3216 participants|
|Intervention Model:||Parallel Assignment|
|Official Title:||Conventional or Hypofractionated High Dose Intensity Modulated Radiotherapy for Prostate Cancer: CHHIP|
|Actual Study Start Date :||October 18, 2002|
|Actual Primary Completion Date :||September 8, 2015|
|Estimated Study Completion Date :||June 17, 2021|
Active Comparator: Control arm
conventional radiotherapy (74 Gy delivered in 37 fractions over 7·4 weeks)
Radiation: conventional radiotherapy 74 Gy delivered in 37 fractions
Experimental: Hypofractionated arm 1
Hypofractionated radiotherapy (60 Gy in 20 fractions over 4 weeks)
Radiation: hypofractionated radiation therapy 60 Gy in 20 fractions
Experimental: Hypofractionated arm 2
Hypofractionated radiotherapy (57 Gy in 19 fractions over 3·8 weeks)
Radiation: hypofractionated radiation therapy 57 Gy in 19 fractions
- Time to biochemical or clinical failure [ Time Frame: Defined as the time from randomisation to biochemical failure or prostate cancer recurrence up to 5 years ]Phoenix consensus guidelines as a PSA concentration greater than nadir plus 2 ng/mL.
- Disease-free survival [ Time Frame: time from randomisation to any prostate cancer-related event or death from any cause up to 15 years ]
- Overall survival [ Time Frame: Time from randomisation to death from any cause up to 15 years ]
- Development of metastases [ Time Frame: Time from randomisation to development of metastases up to 15 years ]
- Recommencement of hormonal treatment for disease recurrence [ Time Frame: Time from randomisation to recommencement of hormone treatment for disease recurrence up to 15 years ]
- Acute and late side-effects [ Time Frame: Peak and week 18 bowel and bladder side-effects ]
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00392535
|Study Chair:||David P. Dearnaley, FRCR||Royal Marsden NHS Foundation Trust|