Dose Escalation Study of CyberKnife® SBRT Boost for Patients With Unresectable Locally Advanced Pancreatic Cancer
Currently the standard treatment for locally advanced, unresectable pancreatic cancer consists either of chemotherapy by itself or a combination of chemotherapy plus radiation therapy or no treatment at all. Unfortunately, no treatment thus far has been able to provide patients with a consistent chance for a cure although there are rare patients who will live for many years after treatment. For most patients the chemotherapy or chemotherapy plus radiation will maintain or improve quality of life by keeping the cancer under control for a period of time.
Approximately 25-30% of patients with early pancreatic cancer who are able to have the cancer completely removed surgically will live beyond 5 years and will be considered cured. This tells us that aggressive treatment directed at the tumour in the pancreas can lead to cure. For the majority of patients who can not have an operation, giving more radiation as part of the treatment may be a strategy that results in better control of the tumour in the pancreas which may or may not result in patients living longer.
The purpose of this study is to test the safety of adding a higher dose (a "boost" dose) of radiation using a radiation unit called CyberKnife when combined with standard chemotherapy and radiation for patients with locally advanced, unresectable pancreatic cancer.
Participants on this study will receive a 'boost' dose of radiation which consists of 3 treatments over 1 week. The participants will then receive the standard of care treatment of chemotherapy and standard radiation therapy over a 5 week period, which will be followed by the conventional 20 weeks of chemotherapy alone. The participants will then be followed for progression of disease and toxicity related to the boost treatment for up to 5 years.
|Pancreatic Carcinoma Non-resectable||Radiation: CyberKnife® Stereotactic Body Radiotherapy(SBRT)Boost||Phase 1|
|Study Design:||Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
|Official Title:||Phase I Time-to-Event Continual Reassessment (TITE-CRM) Dose Escalation Trial of CyberKnife® Stereotactic Body Radiotherapy (SBRT) Boost With Concurrent Chemoradiotherapy for Patients With Unresectable Locally Advanced Pancreatic Cancer|
- Toxicity defined as grade 3 or 4 gastro-intestinal or other non-haematological toxicity [ Time Frame: up to 3 years ]Toxicity defined as grade 3 or 4 gastro-intestinal or other non-haematological toxicity felt to be related to radiotherapy to the upper abdomen, graded as per CTCAE 4.0 and occuring between 3 and 9 months post CyberKnife radiotherapy
- CT scans will measure tumour response [ Time Frame: up to 7 years ]Participant recurrence free survival (RFS), progression free survival (PFS), time to recurrence (TTR), and overall survival (OS) will be measured using CT scans at 3 month intervals during the first 9 months post CyberKnife radiotherapy and then 6 month intervals during the remainder of follow up phase.
- CyberKnife radiation dose measured in Gy delivered to the tumour and surrounding organs vs. the frequency of grade 3-4 toxicity defined by CTCAE v4.0 [ Time Frame: up to 7 years ]To establish radiation dose-volume relationships for various organs and toxicity.
|Study Start Date:||July 2013|
|Estimated Study Completion Date:||December 2020|
|Estimated Primary Completion Date:||December 2017 (Final data collection date for primary outcome measure)|
Experimental: Radiotherapy Boost
All participants will receive the CyberKnife® Stereotactic Body Radiotherapy(SBRT)Boost treatment however, there are 5 dose levels that could be assigned according to Time-to-Event Continual Reassessment Method (TITE-CRM). Participants will be assigned to either receiving 6, 7, 8, 9 or 10 Gy X 3Fr.
Radiation: CyberKnife® Stereotactic Body Radiotherapy(SBRT)Boost
Stereotactic body radiotherapy (SBRT) is a minimally invasive treatment technique that allows for ultra-high doses of radiation to be delivered to small areas with precision. In this study all participants will receive one of 5 dose levels that will be assigned according to Time-to-Event Continual Reassessment Method (TITE-CRM). Three fractions of various dose levels would be delivered over 5 to 10 days (typically Monday, Wednesday and Friday) with at least 36 hours between two sessions. In case of technical or medical problem, the authorized total treatment time is 12 days.
Please refer to this study by its ClinicalTrials.gov identifier: NCT01872377
|The Ottawa Hospital Cancer Centre||Recruiting|
|Ottawa, Ontario, Canada, K1H8L6|
|Contact: Jason R Pantarotto, MD 6137377700 email@example.com|
|Principal Investigator: Jason R Pantarotto, MD|
|Principal Investigator:||Jason Pantarotto, MD||The Ottawa Hospital|