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A Study to Determine the Safe Radiation Dose of Stereotactic Body Radiotherapy for Central Lung Tumors

Phase I Dose-Escalation Study of Stereotactic Body Radiotherapy for Central Lung Tumors

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT1030260204
Enrollment
18
Registered
2026-06-08
Start date
2026-06-08
Completion date
Unknown
Last updated
2026-06-29

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 (NSCLC), pulmonary metastases Non-small cell lung cancer, Central lung tumor, Pulmonary metastasis, Oligometastases, Stereotactic body radiotherapy

Interventions

Dose-escalation stereotactic body radiotherapy (SBRT) for central lung tumors using a 3+3 design. Radiation dose levels are 60 Gy/10 fractions, 65 Gy/10 fractions, and 70 Gy/10 fractions.
SBRT, Stereotactic body radiotherapy, Dose escalation, Radiation therapy

Sponsors

Yamashita Hideomi
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Histologically or clinically diagnosed primary or recurrent non-small cell lung cancer (NSCLC), or limited pulmonary metastases. 2. Tumor diameter 5 cm or less. 3. For primary or recurrent NSCLC, no lymph node or distant metastases. 4. For pulmonary metastases, oligometastatic disease with 3 or fewer pulmonary lesions and controlled primary and extrapulmonary disease. 5. Central lung tumor located within 2 cm of the proximal bronchial tree, trachea, esophagus, heart, major vessels, brachial plexus, or spinal cord. 6. Feasible treatment planning meeting all protocol defined dose constraints. 7. ECOG performance status 0-2. 8. Age 18 years or older. 9. Written informed consent obtained.

Exclusion criteria

Exclusion criteria: Patients meeting any of the following criteria will be excluded from this study: Patients with lymph node metastasis or distant metastasis. Patients scheduled to receive concurrent systemic therapy for the primary disease. Patients with a history of prior thoracic radiotherapy. Patients with active interstitial pneumonia or pulmonary fibrosis on chest CT. Patients suspected of having interstitial lung disease, such as those with elevated KL-6 levels, whom the principal investigator judges unsuitable for study participation. Patients with severe pulmonary dysfunction for whom the principal investigator or subinvestigator determines that SBRT cannot be safely administered. Pregnant or breastfeeding patients. Patients participating in another clinical trial that may affect the conduct or results of this study. Patients whom the principal investigator or subinvestigator considers unsuitable for participation in this study for any other reason.

Design outcomes

Primary

MeasureTime frame
Incidence of dose-limiting toxicity (DLT) within 90 days after completion of radiotherapy

Secondary

MeasureTime frame
LC LR-PFS PFS OS Adverse events MTD RD

Contacts

Public ContactAkiko Oka

University of tokyo hospital

akiko.oka0023@gmail.com+81-80-6744-4112

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026