This clinical trial compares stereotactic ablative radiotherapy (SBRT) with hot spots to standard of care SBRT for the treatment of patients with early-stage non-small cell lung cancer. SBRT with hot spots intentionally makes sure the tumor gets a higher radiation dose during treatment. This potentially may result in better control of the tumor, but also more side effects. SBRT with or without hot spots may be more effective in treating patients with early-stage non-small cell lung cancer, compared to standard of care SBRT.
PRIMARY OBJECTIVE: I. Evaluate the impact of incorporating high isodoses termed "hot spots" in radiation therapy planning on local control. SECONDARY OBJECTIVES: I. Evaluate the impact of "hot spots" in radiation therapy planning on progression-free survival (PFS). II. Evaluate the impact of "hot spots" in radiation therapy planning on overall survival (OS). III. Evaluate the impact of tumor size on local control and if hotspot grouping impacts local control in a size-dependent manner. IV. To prospectively evaluate the PFS in early stage-non small cell lung cancer (ES-NSCLC) patients undergoing SABR who are already taking a beta-blocker as well as a potential interaction between beta-blocker usage and the perceived stress scale. V. Will evaluate for any potential interactions between quality of life (European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Lung Cancer \[EORTC QLQ-LC13\]) and hotspot grouping. VI. Evaluate the impact of "hot spots" in radiation therapy planning on toxicity by total number of grade 3+ adverse effects. EXPLORATORY OBJECTIVE: I. Change in immune cell marker levels at week 12 post-SBRT (± 1 week) versus baseline, such as mediators of tumor antigen presentation, costimulatory molecules, immune effector cell populations, including CD4+ and CD+8 T-cells, T regulatory cells (CD4+CD25+FoxP3+), natural killer (NK) cells, monocytes, macrophages, dendritic cells (DCs) and myeloid derived suppressor cells (MDSCs). OUTLINE: Patients are randomized to 1 of 2 arms. ARM I: Patients receive standard of care (SOC) SBRT for 1-5 fractions over 1-11 days, in the absence of disease progression or unacceptable toxicity. Patients undergo computed tomography (CT) scan with or without positron emission tomography (PET) scan and blood sample collection throughout the study. Patients may undergo lymph node sampling throughout the study. ARM II: Patients receive hot spot SBRT for 1-5 fractions over 1-11 days, in the absence of disease progression or unacceptable toxicity. Patients undergo CT scan with or without PET scan and blood sample collection throughout the study. Patients may undergo lymph node sampling throughout the study. After completion of study treatment, patients are followed up every 3 months for 1 year and then every 3-6 months up to month 36.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
200
Undergo blood sample collection
Undergo CT scan
Undergo lymph node sampling
Undergo PET scan
Receive SOC SBRT
Receive hot spot SBRT
Ancillary studies
Roswell Park Cancer Institute
Buffalo, New York, United States
RECRUITINGTime to progression (local control)
Defined as no failure within the radiotherapy planning target volume (PTV), based on the international consensus on assessing local failure after stereotactic ablative radiotherapy (SBRT) will be utilized. The 2-year local control rates will be summarized by treatment arms using 90% Clopper-Pearson confidence intervals. The local control rates between arms will be compared using one-sided Cochrane-Mantel-Haenszel test (alpha=0.1), stratified by performance status, surgery candidacy, and beta-blocker usage.
Time frame: Up to 2 years
Progression free survival (PFS)
Will be summarized by treatment arms using the Kaplan-Meier product limit estimator.
Time frame: From the start of treatment to first documented disease progression, or death due to any cause, up to 3 years
Overall survival (OS)
Will be summarized by treatment arms using the Kaplan-Meier product limit estimator. One-sided log-rank test stratified by tumor size, performance status, and surgery candidacy will be used to compare the OS between treatment arms (alpha=0.1).
Time frame: From the start of treatment to patient death due to any cause, up to 3 years
Time to progression (local control) in a size-dependent manner
Defined as no failure within the radiotherapy PTV, based on the international consensus on assessing local failure after SBRT will be utilized.
Time frame: Up to 3 years
PFS for patients who are already taking a beta blocker
Time frame: Up to 3 years
Perception of Stress using Perceived Stress Scale
Will be measured by The Perceived Stress Scale (PSS) which assesses the perception of stress. The scale is constituted by 10 items that are self-rated by the subject on a 0-4 Likert scale. The scale minimum total score is 0, the maximum is 40. Higher total scores indicate a worse outcome
Time frame: Up to 3 years
Change in Quality of life
Assessed via European Organization for the Research and Treatment of Cancer Quality of Life Questionnaire - Lung Cancer.
Time frame: Up to 3 years
Incidence of grade 3+ adverse events
Toxicities and adverse events (as per Common Terminology for Adverse Events version 5.0) will be summarized by the treatment arms, type, incidence, severity, seriousness, and relatedness. The rate of grade ≥ 3 AEs will be summarized as proportions with 90% Clopper Pearson confidence intervals.
Time frame: Up to 3 years
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