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Stereotactic Body Radiotherapy (SBRT) for Prostate Cancer

A Phase II Study of Stereotactic Body Radiotherapy (SBRT) for Prostate Cancer Using Continuous Real-time Evaluation of Prostate Motion and IMRT Plan Reoptimization Based on the Anatomy of the Day

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00941915
Acronym
SMART
Enrollment
60
Registered
2009-07-20
Start date
2009-11-09
Completion date
2020-07-17
Last updated
2022-01-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Prostate Cancer

Keywords

CaP, SBRT, Prostate, ExacTrac, Calypso, IMRT, Radiation, Cancer of Prostate, Prostatic Neoplasms

Brief summary

The purpose of this study is to evaluate the incidence of urinary and gastrointestinal acute and late side effects in patients treated with stereotactic body radiotherapy (SBRT) to the prostate. Stereotactic radiation therapy is given as five treatments over a 2-3 week period. The prostate is localized and the plan is reoptimized as needed prior to each treatment.

Detailed description

This protocol requires radiation treatments to be performed with a stereotactic technique with the use of a 3-D coordinate system defined by implanted transponders (i.e. Calypso) or use of the ExacTrac system and/or use cone-beam CT (CBCT) with fiducial markers.

Interventions

RADIATIONSBRT Prostate

Five fractions of 7.4 Gy. The total dose will be 37 Gy. A minimum of 36 hours and a maximum of 96 hours should separate each treatment. No more than 3 fractions will be delivered per week. The total duration of treatment will be no shorter than 10 days and no longer than 18 days.

Sponsors

Duke University
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
40 Years to 82 Years
Healthy volunteers
No

Inclusion criteria

* Histologically confirmed diagnosis of adenocarcinoma of the prostate within 365 days of study enrollment * History/physical examination with digital rectal examination of the prostate within 8 weeks prior to study enrollment * Gleason score less than or equal to 7 * Clinical Stage T1-T2c * PSA * less than or = 15 ng/ml prior to start of therapy if Gleason \< or = 6 or * less than or = 10 ng/ml prior to start of therapy if Gleason = 7 * Zubrod Performance Status 0-1 * Age \> 40

Exclusion criteria

* Prior or concurrent invasive malignancy (except non-melanomatous skin cancer) or lymphomatous/hematogenous malignancy unless continually disease free for a minimum of 5 years. (Carcinoma in situ of the bladder or oral cavity is permissible) * Evidence of distant metastases * Regional lymph node involvement * Significant urinary obstruction * Estimated prostate gland \> 100 grams * Previous radical surgery (prostatectomy) or cryosurgery for prostate cancer * Previous pelvic irradiation, prostate brachytherapy, or bilateral orchiectomy * Previous hormonal therapy, such as LHRH agonists (e.g. goserelin, leuprolide), anti-androgens (e.g., flutamide, bicalutamide), estrogens (e.g., DES), or surgical castration (bilateral orchiectomy) or planned concurrent androgen deprivation therapy * Previous or concurrent cytotoxic chemotherapy for prostate cancer * Prosthetic implants in the pelvic region that contain metal or conductive materials (e.g., an artificial hip). * Severe, active comorbidity

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Genitourinary Acute Toxicity</= 90 days post radiation treatment, a total of 90 daysGenitourinary Acute Toxicity is defined as Grade 3 or higher occurring within 90 days from the end of radiation treatment
Number of Participants With Genitourinary Late Toxicity>90 days from the end of treatment, up to 3 yearsGenitourinary Late Toxicity is defined as Grade 3 or higher occurring \>90 days from the end of radiation treatment
Number of Participants With Gastrointestinal Acute Toxicity</= 90 days post radiation treatment, a total of 90 daysGastrointestinal Acute Toxicity is defined as Grade 3 or higher occurring within 90 days of the end of radiation treatment
Number of Participants With Gastrointestinal Late Toxicity>90 days from the end of treatment, up to 3 yearsGastrointestinal Late Toxicity is defined as Grade 3 or higher occurring \> 90 days from the end of radiation treatment

Secondary

MeasureTime frameDescription
Quality of Life, as Measured by the Expanded Prostate Cancer Index Composite (EPIC-26) Short Form3 years post-treatmentThe EPIC-26 Short Form is a 13-item questionnaire. Scores range from 0-100, with higher scores representing better quality of life.
Disease Free Survival5 yrs

Countries

United States

Participant flow

Participants by arm

ArmCount
Stereotactic Radiotherapy
Five fractions of 7.4 Gy each SBRT Prostate: Five fractions of 7.4 Gy. The total dose will be 37 Gy. A minimum of 36 hours and a maximum of 96 hours should separate each treatment. No more than 3 fractions will be delivered per week. The total duration of treatment will be no shorter than 10 days and no longer than 18 days.
60
Total60

Baseline characteristics

CharacteristicStereotactic Radiotherapy
Age, Continuous66 years
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
60 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants
Race (NIH/OMB)
Asian
1 Participants
Race (NIH/OMB)
Black or African American
17 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
41 Participants
Region of Enrollment
United States
60 participants
Sex: Female, Male
Female
0 Participants
Sex: Female, Male
Male
60 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
4 / 60
other
Total, other adverse events
51 / 60
serious
Total, serious adverse events
1 / 60

Outcome results

Primary

Number of Participants With Gastrointestinal Acute Toxicity

Gastrointestinal Acute Toxicity is defined as Grade 3 or higher occurring within 90 days of the end of radiation treatment

Time frame: </= 90 days post radiation treatment, a total of 90 days

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Stereotactic RadiotherapyNumber of Participants With Gastrointestinal Acute ToxicityGrade 119 Participants
Stereotactic RadiotherapyNumber of Participants With Gastrointestinal Acute ToxicityGrade 23 Participants
Stereotactic RadiotherapyNumber of Participants With Gastrointestinal Acute ToxicityGrade 30 Participants
Stereotactic RadiotherapyNumber of Participants With Gastrointestinal Acute ToxicityGrade 40 Participants
Stereotactic RadiotherapyNumber of Participants With Gastrointestinal Acute ToxicityGrade 50 Participants
Primary

Number of Participants With Gastrointestinal Late Toxicity

Gastrointestinal Late Toxicity is defined as Grade 3 or higher occurring \> 90 days from the end of radiation treatment

Time frame: >90 days from the end of treatment, up to 3 years

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Stereotactic RadiotherapyNumber of Participants With Gastrointestinal Late ToxicityGrade 115 Participants
Stereotactic RadiotherapyNumber of Participants With Gastrointestinal Late ToxicityGrade 25 Participants
Stereotactic RadiotherapyNumber of Participants With Gastrointestinal Late ToxicityGrade 31 Participants
Stereotactic RadiotherapyNumber of Participants With Gastrointestinal Late ToxicityGrade 40 Participants
Stereotactic RadiotherapyNumber of Participants With Gastrointestinal Late ToxicityGrade 50 Participants
Primary

Number of Participants With Genitourinary Acute Toxicity

Genitourinary Acute Toxicity is defined as Grade 3 or higher occurring within 90 days from the end of radiation treatment

Time frame: </= 90 days post radiation treatment, a total of 90 days

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Stereotactic RadiotherapyNumber of Participants With Genitourinary Acute ToxicityGrade 144 Participants
Stereotactic RadiotherapyNumber of Participants With Genitourinary Acute ToxicityGrade 215 Participants
Stereotactic RadiotherapyNumber of Participants With Genitourinary Acute ToxicityGrade 30 Participants
Stereotactic RadiotherapyNumber of Participants With Genitourinary Acute ToxicityGrade 40 Participants
Stereotactic RadiotherapyNumber of Participants With Genitourinary Acute ToxicityGrade 50 Participants
Primary

Number of Participants With Genitourinary Late Toxicity

Genitourinary Late Toxicity is defined as Grade 3 or higher occurring \>90 days from the end of radiation treatment

Time frame: >90 days from the end of treatment, up to 3 years

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Stereotactic RadiotherapyNumber of Participants With Genitourinary Late ToxicityGrade 30 Participants
Stereotactic RadiotherapyNumber of Participants With Genitourinary Late ToxicityGrade 40 Participants
Stereotactic RadiotherapyNumber of Participants With Genitourinary Late ToxicityGrade 122 Participants
Stereotactic RadiotherapyNumber of Participants With Genitourinary Late ToxicityGrade 24 Participants
Stereotactic RadiotherapyNumber of Participants With Genitourinary Late ToxicityGrade 50 Participants
Secondary

Disease Free Survival

Time frame: 5 yrs

Population: Data not collected.

Secondary

Quality of Life, as Measured by the Expanded Prostate Cancer Index Composite (EPIC-26) Short Form

The EPIC-26 Short Form is a 13-item questionnaire. Scores range from 0-100, with higher scores representing better quality of life.

Time frame: 3 years post-treatment

Population: Only participants who provided responses for each domain were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Stereotactic RadiotherapyQuality of Life, as Measured by the Expanded Prostate Cancer Index Composite (EPIC-26) Short FormUrinary Domain94.1 score on a scaleStandard Deviation 14.7
Stereotactic RadiotherapyQuality of Life, as Measured by the Expanded Prostate Cancer Index Composite (EPIC-26) Short FormSexual Domain77.7 score on a scaleStandard Deviation 27.6
Stereotactic RadiotherapyQuality of Life, as Measured by the Expanded Prostate Cancer Index Composite (EPIC-26) Short FormBowel Domain90.2 score on a scaleStandard Deviation 24
Stereotactic RadiotherapyQuality of Life, as Measured by the Expanded Prostate Cancer Index Composite (EPIC-26) Short FormHormonal Domain94.4 score on a scaleStandard Deviation 8.6

Source: ClinicalTrials.gov · Data processed: Mar 11, 2026