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Improving Pulmonary Function Following Radiation Therapy

Improving Pulmonary Function Following Radiation Therapy

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02843568
Enrollment
122
Registered
2016-07-26
Start date
2016-08-17
Completion date
2023-08-16
Last updated
2026-07-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Non-Small Cell Lung Cancer

Brief summary

The purpose of this study is to develop radiation plans that will help preserve lung function in healthy tissue surrounding the tumor. We believe that 4DCT scans can be useful in designing radiation treatment plans that help us avoid healthy normal functioning lung tissue close to lung tumors. Currently 4DCT scans are used to help us determine exactly where the tumor is and how it moves when you breathe. In this study we will also use the 4DCT scans to try to identify high functioning normal lung tissue.

Interventions

OTHERLaboratory Biomarker Analysis

Correlative studies

RADIATIONStandard fractionation

60-66y Gy delivered in 1.8-2.0 Gy fractions over 30-36 treatments

RADIATIONStereotactic Body Radiation Therapy (SBRT)

40-60 Gy delivered in 5-20 Gy fractions over 3-8 treatments

PROCEDUREFour Dimensional Computed Tomographic Imaging (4DCT)

Subjects undergo a total of 7 research-ordered four dimensional computed tomographic imaging (4DCT) scans: 1 at simulation, and 2 scans at each of the 3 post-radiation therapy time points (3, 6, and 12 months). 4DCT determines lung tissue elasticity and for standard of care radiation treatment planning.

Sponsors

University of Wisconsin, Madison
Lead SponsorOTHER
National Cancer Institute (NCI)
CollaboratorNIH

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Histologic diagnosis of non-small cell lung cancer or lung metastasis from a solid tumor. One biopsy site is adequate for multiple sites of thoracic disease. * Treatment includes localized radiation therapy with or without chemotherapy * Karnofsky ≥ 60% * Not pregnant per radiation oncology standard procedures * Ability to understand and the willingness to sign a written informed consent document

Exclusion criteria

* Prior (within last 6 months) or future planned therapeutic surgery for the treatment of the existing lung cancer * Prior thoracic radiotherapy * Severe COPD defined as disease requiring an inpatient stay for respiratory deterioration within the past 3 months * Oxygen dependence of \> 2 L/min continuously throughout the day at baseline * Known underlying collagen vascular disease or intrinsic lung disease that could complicate expected sequelae of radiation (idiopathic pulmonary fibrosis, Wegener's granulomatosis) * Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements.

Design outcomes

Primary

MeasureTime frameDescription
Pulmonary Function, Based on Changes in Tissue Elasticity Measured From 4DCT3 months post RTThe primary endpoint of this study will be the ratio of the tissue elasticity map following RT to the elasticity map before RT (i.e., the Jacobian ratio of (post RT /pre RT)) calculated from 4DCT at 3 months post-RT. Based on the randomness of our measurement technique, diminished expansion (i.e. substantial change) is defined as a Jacobian ratio \<0.94 (i.e., less than 94% of the pre-RT value).

Secondary

MeasureTime frameDescription
Temporal Changes in Reduced Elasticity Determined by the Volume of Lung Where Expansion is Improved (Percent Change)During therapy to 12 months post-RTChanges in Reduced Elasticity (defined as \< 0.94\*median) Determined by the Volume of Lung Where Expansion is Improved (During therapy to 12 months post-RT). All statistical tests will be two-sided and assessed for significance at the 5% level.
Temporal Changes in Reduced Elasticity Determined by the Volume of Lung Where Expansion is Improved (Ratio)During therapy to 12 months post-RTChanges in Reduced Elasticity (defined as \< 0.94\*median) Determined by the Volume of Lung Where Expansion is Improved (During therapy to 12 months post-RT). All statistical tests will be two-sided and assessed for significance at the 5% level.
Temporal Changes in Increased Elasticity Determined by the Volume of Lung Where Expansion is Improved (Percent Change)During therapy to 12 months post-RTChanges in Increased Elasticity (defined as \> 1.06\*median) Determined by the Volume of Lung Where Expansion is Improved (During therapy to 12 months post-RT). All statistical tests will be two-sided and assessed for significance at the 5% level.
Temporal Changes in Increased Elasticity Determined by the Volume of Lung Where Expansion is Improved (Ratio)During therapy to 12 months post-RTChanges in Increased Elasticity (defined as \> 1.06\*median) Determined by the Volume of Lung Where Expansion is Improved (During therapy to 12 months post-RT). All statistical tests will be two-sided and assessed for significance at the 5% level.
Temporal Changes in Fraction of Expanding Lung Determined by the Volume of Lung Where "Meaningful" Expansion Occurs (Percent Change)During therapy to 12 months post-RTChanges in Expansion of Lung Determined by the Volume of Lung Where "Meaningful" Expansion (defined as \> 1.1\*median ) Occurs (During therapy to 12 months post-RT). All statistical tests will be two-sided and assessed for significance at the 5% level.
Temporal Changes in Fraction of Expanding Lung Determined by the Volume of Lung Where "Meaningful" Expansion Occurs (Ratio)During therapy to 12 months post-RTChanges in Expansion of Lung Determined by the Volume of Lung Where "Meaningful" Expansion (defined as \> 1.1\*median ) Occurs (During therapy to 12 months post-RT). All statistical tests will be two-sided and assessed for significance at the 5% level.
Median Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Pre-RT up to 12 months post-RTMedian absolute change in the percent predicted following pulmonary function tests reported: Forced Expiratory Volume in 1 second (FEV1), Forced Vital Capacity (FVC), and diffusing capacity of carbon monoxide (DLCO). All statistical tests will be two-sided and assessed for significance at the 5% level.
Validation in Consistency of Tissue Elasticity Changes Measured With Values Predicted Based on Existing Radiation Dose Response CurvesUp to 12 months post-RTAll statistical tests will be two-sided and assessed for significance at the 5% level.
Variation of the Tissue Elasticity Calculated Between Scan 1 and Scan 2 at Each Time Point Will be Quantified and Compared to Longitudinal Changes in Tissue ElasticityUp to 12 months post-RTAll statistical tests will be two-sided and assessed for significance at the 5% level.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORCarri K Glide-Hurst, PhD, DABR, FAAPM

University of Wisconsin, Madison

Participant flow

Participants by arm

ArmCount
Standard of Care
Subjects undergo four-dimensional computed tomographic imaging (4DCT) scans: 1 at simulation, and 2 scans at each of the 3 post-radiation therapy time points (3, 6, and 12 months). 4DCT determines lung tissue elasticity and for standard of care radiation treatment planning. Subjects undergo laboratory biomarker analysis, including spirometry, diffusion capacity (DLCO), and lung volumes (FEV, FEV1). Subjects complete a self-assessment, RTOG defined acute evaluation toxicity evaluation, RTOG late toxicity evaluation, and constitutional assessment. Radiation doses between 60-66 Gy using standard fractionation (1.8-2.0 Gy/fx) and 40-60 Gy stereotactic body radiation therapy (SBRT) hypofractionation schemes are utilized. Treatment volumes are at the discretion of the treating radiation oncologist and should follow standard of care. Laboratory Biomarker Analysis: Correlative studies Standard fractionation: 60-66y Gy delivered in 1.8-2.0 Gy fractions over 30-36 treatments Stereotactic Body Radiation Therapy (SBRT): 40-60 Gy delivered in 5-20 Gy fractions over 3-8 treatments Four Dimensional Computed Tomographic Imaging (4DCT): Subjects undergo a total of 7 research-ordered four dimensional computed tomographic imaging (4DCT) scans: 1 at simulation, and 2 scans at each of the 3 post-radiation therapy time points (3, 6, and 12 months). 4DCT determines lung tissue elasticity and for standard of care radiation treatment planning.
61
Pulmonary Function Damage Reduction
All criteria and specifications in the standard of care arm are applicable for this arm, including the same 4DCT scans, and laboratory biomarker analysis. Subjects randomized to this arm of the trial will have the same prescribed radiation dose to the tumor volume and held to the same radiation dose criteria as the subjects in the standard of care arm (60-66 Gy using standard fractionation (1.8-2.0 Gy/fx) and 40-60 Gy stereotactic body radiation therapy (SBRT) hypofractionation). The fundamental difference will be radiation doses for these subjects will be redistributed away from regions predicted to cause the greatest reduction in pulmonary function if damaged. Laboratory Biomarker Analysis: Correlative studies Standard fractionation: 60-66y Gy delivered in 1.8-2.0 Gy fractions over 30-36 treatments Stereotactic Body Radiation Therapy (SBRT): 40-60 Gy delivered in 5-20 Gy fractions over 3-8 treatments Four Dimensional Computed Tomographic Imaging (4DCT): Subjects undergo a total of 7 research-ordered four dimensional computed tomographic imaging (4DCT) scans: 1 at simulation, and 2 scans at each of the 3 post-radiation therapy time points (3, 6, and 12 months). 4DCT determines lung tissue elasticity and for standard of care radiation treatment planning.
55
Total116

Baseline characteristics

CharacteristicStandard of CareTotalPulmonary Function Damage Reduction
Age, Customized
median age
69 years70 years71 years
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
61 Participants116 Participants55 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants1 Participants1 Participants
Race (NIH/OMB)
Asian
2 Participants2 Participants0 Participants
Race (NIH/OMB)
Black or African American
1 Participants2 Participants1 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
58 Participants111 Participants53 Participants
Region of Enrollment
United States
61 participants116 participants55 participants
Sex: Female, Male
Female
24 Participants56 Participants32 Participants
Sex: Female, Male
Male
37 Participants60 Participants23 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
3 / 613 / 55
other
Total, other adverse events
61 / 6155 / 55
serious
Total, serious adverse events
7 / 6110 / 55

Outcome results

Primary

Pulmonary Function, Based on Changes in Tissue Elasticity Measured From 4DCT

The primary endpoint of this study will be the ratio of the tissue elasticity map following RT to the elasticity map before RT (i.e., the Jacobian ratio of (post RT /pre RT)) calculated from 4DCT at 3 months post-RT. Based on the randomness of our measurement technique, diminished expansion (i.e. substantial change) is defined as a Jacobian ratio \<0.94 (i.e., less than 94% of the pre-RT value).

Time frame: 3 months post RT

ArmMeasureValue (MEDIAN)
Standard of CarePulmonary Function, Based on Changes in Tissue Elasticity Measured From 4DCT1.09 ratio
Pulmonary Function Damage ReductionPulmonary Function, Based on Changes in Tissue Elasticity Measured From 4DCT1.13 ratio
Secondary

Change in Level of Plasma Cytokines

All statistical tests will be two-sided and assessed for significance at the 5% level.

Time frame: Baseline up to 12 months post-RT

Secondary

Change in Level of Plasma TGF-beta

All statistical tests will be two-sided and assessed for significance at the 5% level.

Time frame: Baseline up to 12 months post-RT

Secondary

Median Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)

Median absolute change in the percent predicted following pulmonary function tests reported: Forced Expiratory Volume in 1 second (FEV1), Forced Vital Capacity (FVC), and diffusing capacity of carbon monoxide (DLCO). All statistical tests will be two-sided and assessed for significance at the 5% level.

Time frame: Pre-RT up to 12 months post-RT

Population: This measures a change from baseline, not all participants completed all time points

ArmMeasureGroupValue (MEDIAN)
Standard of CareMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the DLCO percent predicted from baseline to 3 months-12 percent predicted
Standard of CareMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FVC percent predicted from baseline to 12 months-5 percent predicted
Standard of CareMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the DLCO percent predicted from baseline to 12 months12 percent predicted
Standard of CareMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FVC percent predicted from baseline to 3 months-6 percent predicted
Standard of CareMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FEV1 percent predicted from baseline to 12 months2 percent predicted
Standard of CareMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FEV1 percent predicted from baseline to 6 months-4 percent predicted
Standard of CareMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the DLCO percent predicted from baseline to 6 months-11 percent predicted
Standard of CareMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FVC percent predicted from baseline to 6 months-4.5 percent predicted
Standard of CareMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FEV1 percent predicted from baseline to 3 months-5 percent predicted
Pulmonary Function Damage ReductionMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FVC percent predicted from baseline to 6 months-2 percent predicted
Pulmonary Function Damage ReductionMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the DLCO percent predicted from baseline to 3 months-11 percent predicted
Pulmonary Function Damage ReductionMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FVC percent predicted from baseline to 12 months8 percent predicted
Pulmonary Function Damage ReductionMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FEV1 percent predicted from baseline to 6 months-4 percent predicted
Pulmonary Function Damage ReductionMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FEV1 percent predicted from baseline to 3 months-3 percent predicted
Pulmonary Function Damage ReductionMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FEV1 percent predicted from baseline to 12 months12 percent predicted
Pulmonary Function Damage ReductionMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the DLCO percent predicted from baseline to 12 months5 percent predicted
Pulmonary Function Damage ReductionMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the DLCO percent predicted from baseline to 6 months-9.5 percent predicted
Pulmonary Function Damage ReductionMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FVC percent predicted from baseline to 3 months1.5 percent predicted
Standard of Care: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FVC percent predicted from baseline to 6 months-0.5 percent predicted
Standard of Care: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FEV1 percent predicted from baseline to 3 months-2 percent predicted
Standard of Care: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FEV1 percent predicted from baseline to 6 months-2 percent predicted
Standard of Care: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FEV1 percent predicted from baseline to 12 months-2 percent predicted
Standard of Care: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FVC percent predicted from baseline to 3 months0 percent predicted
Standard of Care: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FVC percent predicted from baseline to 12 months0 percent predicted
Standard of Care: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the DLCO percent predicted from baseline to 3 months-2.5 percent predicted
Standard of Care: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the DLCO percent predicted from baseline to 6 months-6.5 percent predicted
Standard of Care: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the DLCO percent predicted from baseline to 12 months2.5 percent predicted
Pulmonary Function Damage Reduction: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the DLCO percent predicted from baseline to 3 months-2 percent predicted
Pulmonary Function Damage Reduction: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FVC percent predicted from baseline to 3 months0 percent predicted
Pulmonary Function Damage Reduction: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FEV1 percent predicted from baseline to 12 months-1 percent predicted
Pulmonary Function Damage Reduction: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the DLCO percent predicted from baseline to 12 months1 percent predicted
Pulmonary Function Damage Reduction: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the DLCO percent predicted from baseline to 6 months-0.5 percent predicted
Pulmonary Function Damage Reduction: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FEV1 percent predicted from baseline to 6 months-3 percent predicted
Pulmonary Function Damage Reduction: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FVC percent predicted from baseline to 12 months2 percent predicted
Pulmonary Function Damage Reduction: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FVC percent predicted from baseline to 6 months-2 percent predicted
Pulmonary Function Damage Reduction: SBRT CohortMedian Absolute Change in the Percent Predicted for Pulmonary Function Tests (PFTs)Median Absolute Change in the FEV1 percent predicted from baseline to 3 months-2 percent predicted
Secondary

Temporal Changes in Fraction of Expanding Lung Determined by the Volume of Lung Where Meaningful Expansion Occurs

All statistical tests will be two-sided and assessed for significance at the 5% level.

Time frame: During therapy to 12 months post-RT

Secondary

Temporal Changes in Increased Elasticity Determined by the Volume of Lung Where Expansion is Improved

All statistical tests will be two-sided and assessed for significance at the 5% level.

Time frame: During therapy to 12 months post-RT

Secondary

Temporal Changes in Reduced Elasticity Determined by the Volume of Lung Where Expansion is Improved

All statistical tests will be two-sided and assessed for significance at the 5% level.

Time frame: During therapy to 12 months post-RT

Secondary

Validation in Consistency of Tissue Elasticity Changes Measured With Values Predicted Based on Existing Radiation Dose Response Curves

All statistical tests will be two-sided and assessed for significance at the 5% level.

Time frame: Up to 12 months post-RT

Secondary

Variation of the Tissue Elasticity Calculated Between Scan 1 and Scan 2 at Each Time Point Will be Quantified and Compared to Longitudinal Changes in Tissue Elasticity

All statistical tests will be two-sided and assessed for significance at the 5% level.

Time frame: Up to 12 months post-RT

Source: ClinicalTrials.gov · Data processed: Jul 7, 2026