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CompletedNCT00573833Updated Oct 20, 2017Results posted

Internal Radiation Therapy in Treating Patients With Prostate Cancer

An interventional study of questionnaire administration and quality-of-life assessment in Prostate Cancer, sponsored by Memorial Sloan Kettering Cancer Center. Completed at 1 site in United States. Open to male participants aged 18 Years to 120 Years. Per ClinicalTrials.gov, last updated 2017-10-20.

Sponsored by Memorial Sloan Kettering Cancer Center · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
23
Allocation
Not applicable
Ages
18 Years to 120 Years
Sex
Male
01

Study summary

RATIONALE: Internal radiation therapy uses radioactive material placed directly into or near a tumor to kill tumor cells.

PURPOSE: This clinical trial is studying the side effects and how well internal radiation therapy works in treating patients with prostate cancer.

Read the detailed description

OBJECTIVES:

Primary

  • To assess the feasibility of high-dose rate (HDR) brachytherapy (without the use of external-beam radiotherapy) as definitive treatment for patients with intermediate-risk prostate cancer.
  • To assess acceptable toxicity, defined as treatment related toxicity (urinary and rectal), no worse than that seen by patients treated with conventional therapy (grade 3 urinary toxicity \< 10% and grade 3 rectal toxicity \< 10%).

Secondary

  • To achieve adequate dosimetric coverage of the prostate comparable to current standards.
  • To assess the effect of treatment on sexual function.

OUTLINE: Patients undergo 4 high-dose rate brachytherapy treatments over 2 days.

Patients complete bladder, bowel, sexual function, and quality of life questionnaires, including the International Index of Erectile Function (IIEF) questionnaire, the International Prostate Symptom Score Index (IPSS), and the MSKCC Prostate Quality of Life questionnaire at baseline and then at every follow-up visit.

After completion of study treatment, patients are followed every 3 months for 1 year.

02

Conditions studied

  • Prostate Cancer

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Keywords

  • adenocarcinoma of the prostate
  • stage IIB prostate cancer
  • stage IIA prostate cancer
03

In context

Prostatic Neoplasms

6,484 studies on the registry are indexed under Prostatic Neoplasms; 1,415 are open to participants now.

This study's enrollment of 23 is below the median of 58 across 4,908 interventional studies indexed under Prostatic Neoplasms.

Browse Prostatic Neoplasms studies →

Lead sponsor

Memorial Sloan Kettering Cancer Center is the lead sponsor of 1,957 studies on the registry; 323 are open to participants now.

Of its 132 completed or terminated interventional studies of FDA-regulated products, 68 (52%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 120 Years
Sexes eligible
Male
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

DISEASE CHARACTERISTICS:

Inclusion criteria

Inclusion criteria:

  • Intermediate-risk adenocarcinoma of the prostate, defined by 1of the following criteria:

    • PSA 10-20 ng/mL
    • Gleason score ≥ 7
    • Stage ≥ T2b AND \< T3
  • Less than 20% risk of seminal vesicle involvement or lymph node involved based upon the Kattan nomogram (pre-treatment risk with IMRT)
  • Prostate size \< 60 cc by MRI or CT imaging
  • International Prostate Symptom Score Index ≤ 15

Exclusion criteria

Exclusion criteria:

  • Evidence of definitive extracapsular extension/seminal vesicle invasion or pelvic adenopathy by MRI (endorectal coil) and DRE (digital rectal examination)

    • Suspected extracapsular disease will not be considered an exclusion criteria
  • PSA > 20 ng/mL
  • Presence of distant metastases

PATIENT CHARACTERISTICS:

  • WBC ≥ 3,500/mm³
  • Platelet count ≥ 75,000/mm³
  • Hemoglobin ≥ 10 g/dL
  • Creatinine ≤ 1.5 mg/dL
  • Liver function tests ≤ 1.5 times normal
  • INR ≤ 2.5
  • Able to complete quality of life questionnaires
  • Able to give informed consent
  • No active perineal infections
  • No history of urethral stricture
  • No prior history of pelvic malignancy
  • No prior history of lymphoma disease, ulcerative colitis, or anal fissures
  • No contraindications to general anesthesia
  • No pacemaker

PRIOR CONCURRENT THERAPY:

  • No prior transurethral resection of the prostate
  • No prior pelvic radiotherapy
  • No prior treatment for prostate cancer except for hormone therapy
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
23 participants (actual)

Study arms

  • Experimental
    HDR Brachytherapy

    9.5 Gy HDR Brachytherapy for 4 fractions given over 2 days

    Other: questionnaire administration · Procedure: quality-of-life assessment · Radiation: brachytherapy

Interventions

  • Otherquestionnaire administration
  • Procedurequality-of-life assessment
  • Radiationbrachytherapy
06

What researchers measure

Primary outcomes

  1. Number of Patients With an Acceptable Level of Severe Toxicity as Defined at < Grade 3 CTC Toxicity

    Feasibility will be defined as an acceptable level of severe toxicity (both acute and late effects), and adequate dosimetric coverage. Severe toxicity will be defined as \> or = grade 3 NCI CTC toxicity

    Time frame: At scheduled 3 month intervals for one year

  2. Number of Patients With an Acceptable Level of Treatment Related Urinary and Rectal Toxicity as Defined at < Grade 3 CTC Toxicity

    urinary and rectal toxicity-see the adverse event tables

    Time frame: Within 90 days of treatment (early toxicities) or after 90 days (late toxicities)

Other outcomes

  1. Number of Participants Having an International Index of Erectile Function - Erectile Function (IIEF-EF) Domain Score Greater Than or Equal to 26 Through 12-Week Endpoint

    Self-reported erectile function over the past 4 weeks. IIEF- EF is the sum of Questions 1-5 and 15 of the IIEF. Questions 1-5 are scored 0 (low/no erectile function) to 5 (high erectile function) and Question 15 is scored 1 (very low confidence) to 5 (very high confidence), for a total score ranging from 1 to 30. Higher scores represent better erectile function. Data presented are the number of participants who return to normal erectile function (IIEF-EF domain score ≥26)

    Time frame: week 12 reported

  2. Median International Prostate Symptom Total Score

    Quality of life will be assessed with the MSKCC prostate quality of life instrument. International prostate symptom score index (IPSS). The IPSS index is a seven item questionnaire designed to assess urinary functioning, specifically urinary frequency, nocturia, weak urinary stream, hesitancy, intermittence, incomplete emptying, and urgency. Questions are rated on a six point Likert scale with higher scores indicating more difficulty in urinary functioning. This measure demonstrated a high internal consistency (Cronbach's alpha = 0.84) with excellent test-retest reliability (r = 0.92).

    Time frame: week 12 reported

07

Results

Posted Oct 20, 2017

Participant flow

Participant flow — Overall Study
MilestoneHDR Brachytherapy
Started23
Completed21
Not completed2
Withdrew: Not treated2

Outcome measures

PrimaryNumber of Patients With an Acceptable Level of Severe Toxicity as Defined at < Grade 3 CTC Toxicity

Feasibility will be defined as an acceptable level of severe toxicity (both acute and late effects), and adequate dosimetric coverage. Severe toxicity will be defined as \> or = grade 3 NCI CTC toxicity

Time frame:
At scheduled 3 month intervals for one year
Reported as:
Number · participants
Number of Patients With an Acceptable Level of Severe Toxicity as Defined at < Grade 3 CTC Toxicity
participantsHDR Brachytherapy
Number of Patients With an Acceptable Level of Severe Toxicity as Defined at < Grade 3 CTC Toxicity20
PrimaryNumber of Patients With an Acceptable Level of Treatment Related Urinary and Rectal Toxicity as Defined at < Grade 3 CTC Toxicity

urinary and rectal toxicity-see the adverse event tables

Time frame:
Within 90 days of treatment (early toxicities) or after 90 days (late toxicities)
Reported as:
Number · participants
Number of Patients With an Acceptable Level of Treatment Related Urinary and Rectal Toxicity as Defined at < Grade 3 CTC Toxicity
participantsHDR Brachytherapy
Number of Patients With an Acceptable Level of Treatment Related Urinary and Rectal Toxicity as Defined at < Grade 3 CTC Toxicity21
Other pre-specifiedNumber of Participants Having an International Index of Erectile Function - Erectile Function (IIEF-EF) Domain Score Greater Than or Equal to 26 Through 12-Week Endpoint

Self-reported erectile function over the past 4 weeks. IIEF- EF is the sum of Questions 1-5 and 15 of the IIEF. Questions 1-5 are scored 0 (low/no erectile function) to 5 (high erectile function) and Question 15 is scored 1 (very low confidence) to 5 (very high confidence), for a total score ranging from 1 to 30. Higher scores represent better erectile function. Data presented are the number of participants who return to normal erectile function (IIEF-EF domain score ≥26)

Time frame:
week 12 reported
Reported as:
Number · participants
Number of Participants Having an International Index of Erectile Function - Erectile Function (IIEF-EF) Domain Score Greater Than or Equal to 26 Through 12-Week Endpoint
participantsHDR Brachytherapy
Number of Participants Having an International Index of Erectile Function - Erectile Function (IIEF-EF) Domain Score Greater Than or Equal to 26 Through 12-Week Endpoint3
Other pre-specifiedMedian International Prostate Symptom Total Score

Quality of life will be assessed with the MSKCC prostate quality of life instrument. International prostate symptom score index (IPSS). The IPSS index is a seven item questionnaire designed to assess urinary functioning, specifically urinary frequency, nocturia, weak urinary stream, hesitancy, intermittence, incomplete emptying, and urgency. Questions are rated on a six point Likert scale with higher scores indicating more difficulty in urinary functioning. This measure demonstrated a high internal consistency (Cronbach's alpha = 0.84) with excellent test-retest reliability (r = 0.92).

Time frame:
week 12 reported
Reported as:
Median · scores on a scale
Median International Prostate Symptom Total Score
scores on a scaleHDR Brachytherapy
Median International Prostate Symptom Total Score5 (2 to 13)

Adverse events

Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
HDR Brachytherapy—2/21 (9.5%)11/21 (52.4%)
Most frequent serious events
Most frequent serious events
EventHDR Brachytherapy
EsophagitisGastrointestinal disorders1/21
Hemorrhage, EsophagusGastrointestinal disorders1/21
Most frequent other events
Most frequent other events
EventHDR Brachytherapy
Erectile dysfunctionReproductive system and breast disorders5/21
Urinary retention (includ neurogenic bladder)Renal and urinary disorders5/21
Urinary frequency/urgencyRenal and urinary disorders4/21
DiarrheaGastrointestinal disorders1/21
Ejaculatory dysfunctionReproductive system and breast disorders1/21
Phosphate, low (hypophosphatemia)Metabolism and nutrition disorders1/21
Renal/Genitourinary-Other SpecifyRenal and urinary disorders1/21

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)HDR Brachytherapy
<=18 years0
Between 18 and 65 years12
>=65 years9
Sex: Female, Male
Sex: Female, Male(Participants)HDR Brachytherapy
Female0
Male21
Region of Enrollment
Region of Enrollment(participants)HDR Brachytherapy
United States21
08

Study locations

1 site
  • Memorial Sloan-Kettering Cancer Center
    New York, New York 10065, United States
09

References and documents

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 20, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT00573833
Responsible party
Sponsor
First posted
Dec 14, 2007
Start date
Nov 2007
Primary completion
Sep 2014
Completion
Sep 2014
Results posted
Oct 20, 2017
Last update
Oct 20, 2017

Study contacts

Josh Yamada, MD
principal investigator · Memorial Sloan Kettering Cancer Center
Michael J. Zelefsky, MD
principal investigator · Memorial Sloan Kettering Cancer Center
Sherri M. Donat, MD
principal investigator · Memorial Sloan Kettering Cancer Center
Marco Zaider, PhD
principal investigator · Memorial Sloan Kettering Cancer Center
View the source record on ClinicalTrials.gov ↗

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