Computed Tomography-Guided Stereotactic Adaptive Radiotherapy (CT-STAR) for the Treatment of Central and Ultra-Central Early-Stage Non-Small Cell Lung Cancer
Public ClinicalTrials.gov record NCT05785845. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Phase I Trial of Computed Tomography-Guided Stereotactic Adaptive Radiotherapy (CT-STAR) for the Treatment of Central and Ultra-Central Early-Stage Non-Small Cell Lung Cancer
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This study will evaluate the impact of CT-guided adaptive stereotactic radiotherapy (CT-STAR) to central and ultra-central early-stage non-small cell lung cancers on grade 3 or greater toxicity. Online adaptive radiation therapy was until recently only done clinically on an integrated MRI-guided system, but recently, Varian Medical Systems has created a CT-guided radiotherapy machine capable of online adaptive radiotherapy (ETHOS). The vast majority of stereotactic body radiotherapy (SBRT) for early-stage lung cancers is performed on a CT-guided machine rather than an MRI-guided machine, necessitating the evaluation of adaptive radiotherapy using ETHOS in this population. Historically, the non-adaptive, stereotactic treatment of central and ultra-central thoracic disease has been associated with unacceptable rates of grade 3+ toxicity. This has resulted in widespread adoption of a hypofractionated, less ablative 8-15 day treatment courses, with a baseline, one-year grade 3+ toxicity rate of 20%. Use of CT-STAR with daily, CT-guided plan adaptation to carefully spare adjacent organs-at-risk (OAR) in this setting may enable safe delivery of a shorter (5 fraction) and more ablative radiotherapy course.
Study identification
- NCT ID
- NCT05785845
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 17 participants
Conditions and interventions
Interventions
- Computed tomography-guided stereotactic adaptive radiotherapy Radiation
- ETHOS Device
Radiation · Device
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Apr 9, 2023
- Primary completion
- Jun 1, 2026
- Completion
- Jun 1, 2026
- Last update posted
- Aug 5, 2026
2023 – 2026
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Washington University School of Medicine | St Louis | Missouri | 63110 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT05785845, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Aug 5, 2026 · Synced Sep 2, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT05785845 live on ClinicalTrials.gov.