- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT01288534
Hypofractionated Stereotactic Body Radiation Therapy (SBRT)
A Study of Hypofractionated Stereotactic Body Radiation Therapy (SBRT) Using Continuous Real-time Evaluation of Prostate Motion
The purpose of this study is to evaluate the safety and tolerability of using radiation therapy with 5 fractions of radiation to treat prostate cancer with guidance of radiation using the Calypso 4D Treatment System (Calypso).A number of recent studies have used 5 radiation fraction to treat prostate cancer over 2-3 weeks as compared to the typical treatment which would involve 40-42 smaller radiation fractions over 8-9 weeks. This type of radiation using a smaller number of treatments has been called hypofractionated radiation therapy.
The Calypso is a new technique which uses beacons implanted into the prostate which using radio signals are able to localize and track the position of the prostate continuously during radiation therapy. The Calypso system has been approved by the United States Food and Drug Administration (FDA) for guidance of radiation therapy during the treatment of prostate cancer and is being utilized all across the United States. However, it has not been tested for hypofractionated radiation therapy.
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
Tipo di studio
Iscrizione (Effettivo)
Fase
- Fase 2
Contatti e Sedi
Luoghi di studio
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California
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Sacramento, California, Stati Uniti, 95815
- The Radiological Associates of Sacremento
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Michigan
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Ann Arbor, Michigan, Stati Uniti
- University of Michigan Cancer Center
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-
Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
Inclusion Criteria:
- 18 years of age or older
- Histologically confirmed diagnosis of adenocarcinoma of the prostate within 180 days of enrollment
- Signed informed consent
- Gleason score ≤ 7
- If Gleason 7 (3+4=7 or 4+3=7) then <50% of biopsy cores must be positive for any pathologic grade of prostate cancer
- If Gleason score <7 then there is no limit on the percentage of biopsy cores involved by prostate cancer
- PSA (within 90 days prior to enrollment)
- ≤ 15 ng/ml prior to start of therapy if Gleason ≤ 6 and
- ≤ 10 ng/ml prior to start of therapy if Gleason 7
- No plan to use hormone therapy prior to evidence of biochemical failure(ie: No neoadjuvant or adjuvant ADT)
- Tumor stage: T1a, T1b, T1c, T2a, T2b
- ECOG Performance Status 0-1
Exclusion Criteria:
- A history of other malignancy diagnosed within the previous 60 months except for non-melanoma skin cancer.
- Any patients who have received other investigational therapy within the last 60 days
- Individuals that have previously been implanted with permanent Beacon transponders
- Patients that have any prosthetic implants in the pelvic region that contain metal or conductive materials (e.g., an artificial hip)
- Patients with implanted pacemaker or defibrillators
- Patients who are felt to have body habitus not conducive to tracking with Calypso beacons
- Positive lymph nodes or metastatic disease from prostate cancer
- Tumor stage: T2c, T3, or T4
- Previous pelvic radiation therapy
- Previous surgery or chemotherapy for prostate cancer
- Previous transuretheral resection of the prostate (TURP) or cryotherapy to the prostate
- Prior hormone therapy or plans for concurrent or post treatment adjuvant hormonal therapy or chemotherapy
- Hormone therapy to include LHRH agonist or oral anti-androgen
- Finasteride and Dutasteride use not excluded
- Concomitant antineoplastic therapy (including surgery, cryotherapy, conventionally fractionated radiation therapy, and chemotherapy) while on this protocol
- History of Crohn's Disease or Ulcerative Colitis
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Trattamento
- Assegnazione: N / A
- Modello interventistico: Assegnazione di gruppo singolo
- Mascheramento: Nessuno (etichetta aperta)
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
|---|---|
|
Sperimentale: Radioterapia
|
Patients will receive 5 fractions of radiation (you will not receive radiation therapy on two consecutive days).
Each fraction size will be 7.4 Gy.
The total dose will be 37 Gy.
The 5 treatments will be scheduled to be delivered 2 fractions per business week (Monday through Friday).
The total duration of treatment will be no shorter than 15 days and no longer than 19 days.
|
Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Percentage of Patients With a Minimally Detected Decline (MDD) in Quality of Life (QOL)
Lasso di tempo: 24 months
|
To evaluate the safety of the proposed hyperfractionation regimen of 5 fractions of radiation to treat prostate cancer with guidance of radiation using the Calypso 4D Treatment System (Calypso, and to compare it to that expected from conventional treatment, which would involve 40-42 smaller radiation fractions over 8-9 weeks. Percentage of patients with a MDD in Quality of Life (QOL) surveys for urinary incontinence (UI), urinary obstructive (UO), bowel (BS), and sexual (SS) domains were reviewed at 6 months and 24 months. |
24 months
|
Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Percentage of Patients With a PSA Nadir of <3.35 ng/ml at 12 Months
Lasso di tempo: 1 Year
|
To estimate one year prostate specific antigen (PSA)control of prostate cancer when treated with stereotactic body radiotherapy (SBRT) using continuous real-time evaluation of prostate motion.
|
1 Year
|
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Relation Between Dose Distribution and Toxicities.
Lasso di tempo: 5 years
|
To look at the relation between dose distribution and toxicities and to determine if reconstructed delivered doses are more predictive of toxicity than planned doses.
|
5 years
|
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Relation Between Reconstructed Delivered Dose Distributions.
Lasso di tempo: 5 years
|
To determine the relation between reconstructed delivered dose distributions, accounting for prostate translation and rotation, and tumor control probabilities.
|
5 years
|
|
Frequency of Required Interventions.
Lasso di tempo: 5 years
|
To assess the frequency of required interventions (interruptions) based on real-time prostate translations and rotations to verify that the proposed planning target volume(PTV) margins and action level are appropriate and practical.
This will be assessed by the percentage of patients with no interventions for any fraction, the percentage of patients with 1-2 fractions interrupted and the percentage of patients with more than two fractions interrupted and the percentage of patients that had an interruption of the beam at least once for all 5 fractions.
|
5 years
|
Collaboratori e investigatori
Collaboratori
Investigatori
- Investigatore principale: Daniel Spratt, MD, University of Michigan Rogel Cancer Center
Studiare le date dei record
Studia le date principali
Inizio studio
Completamento primario (Effettivo)
Completamento dello studio (Effettivo)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
- 2010.064
- HUM00041474 (Altro identificatore: University of Michigan Medical School IRB)
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .
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