This study will evaluate the feasibility of radiosurgery for all metastatic sites in patients presenting with oligometastatic disease, defined here as 5 or fewer sites of metastatic disease involving 3 or fewer organ systems.
Death from metastatic cancer is a common cause of death, accounting for 80-90% of cancer deaths. The classic thought process is that metastatic disease represents the continuum such that known metastatic disease is an inevitable harbinger for subsequent metastatic disease. However, it has been reported that a subset of patients with limited volume metastatic disease may have a better prognosis if given aggressive therapy. This group of patients has become known as "oligometastatic". These patients are potentially curable with stereotactic radiosurgery (SRS) or stereotactic radiotherapy (SRT) (collectively referred to as stereotactic body radiotherapy or SBRT) to the metastatic disease sites in combination with standard curative therapy to the primary site. Patients in this study receive SRS/SBRT to all sites of oligometastatic disease.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
173
Dose and fractionation will be dependent on the lesion location and lesion size and is up to the exact fractionation and dose is at the discretion of the treating physician. A minimum of 48 hours must be used in between SRS treatments at each site. Note that patients can have SRS everyday or multiple SRS sessions in one day as long as the minimum time for each treatment site is met. For example, if two lung lesions, brain, adrenal, and liver sites were being treated both lung sites could be treated Monday, Wednesday, and Friday and the adrenal, liver and brain lesions treated Tuesday, Thursday
UPMC Hillman Cancer Center - Radiation Oncology
Pittsburgh, Pennsylvania, United States
Adverse Events Related to Treatment
Adverse Events as measured by CTCAE version 4.0, possibly, probably or definitely related to study treatment.
Time frame: Up to 5 years
Serious Adverse Events related to treatment
Serious Adverse Events as measured by CTCAE version 4.0, possibly, probably or definitely related to study treatment.
Time frame: Up to 5 years
The Functional Assessment of Cancer Therapy - General (FACT-G)
A a self-administered, 27-item questionnaire designed to measure four domains of HRQOL in cancer patients: Physical, social, emotional, and functional well-being. Scaling of items: Five-point scale from 0 (not at all) to 4 (very much). Scoring: Subscale scores added to obtain total score. Alternative scoring includes the Trial Outcome Index (TOI), which is the sum of the Physical, Functional, Cancer Subscales. The TOI is reported to be an efficient and precise summary index of physical and functional outcomes. Higher scores indicated better quality of life.
Time frame: 5 years
Local control of metastatic sites
Proportion of patients with local control is defined as stable disease (SD), partial response (PR), or complete response (CR) in the target lesion, per RECIST v1.1. Complete Response (CR): the disappearance of a target lesion. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. Partial Response (PR): at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum diameters. Neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, taking as reference the smallest sum LD since the treatment started.
Time frame: Up to 5 years
Overall survival (OS)
The (median) length of time from enrollment to confirmed death from any cause.
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Time frame: Up to 5 years
Analysis of patterns of failure post-SRS/SBRT
Proportion of patients with local failure (progressive disease (PD) within the target lesion. Per RECIST v1.1: Progressive Disease (PD): at least a 20% increase in the sum of diameters of target lesions, taking as a reference the smallest sum on study (this includes the baseline sum if that is the smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. (Note: the appearance of one or more new lesions is also considered progression).
Time frame: Up to 5 years