Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Stereotactic Body Proton Therapy for Early-Stage Lung Cancer in Inoperable or Surgery-Refusing Patients

Official title: A Single-Center, Prospective Phase II Clinical Study of Stereotactic Body Proton Therapy (SBPT) for Early-Stage Non-Small Cell Lung Cancer

Run by Guangzhou Concord Cancer Center · NCT07412327 · Data updated 2026-11-12

This study tests whether high-precision proton therapy given in few sessions can treat early-stage non-small cell lung cancer in patients who cannot have surgery or won’t have it.

More Lung Cancer trials

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment65 (estimated)
SponsorGuangzhou Concord Cancer Center
Academic / other
Locations1 site (Guangzhou, Guangdong)
StatusRecruiting
StartedFebruary 24, 2026
Main results expectedJuly 1, 2029
Study endsJuly 1, 2029
Registry record updatedMay 22, 2026
Trial IDNCT07412327 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults 18+ with histologically confirmed or clinically diagnosed early-stage NSCLC (cT1-3 N0M0, stage IA-IIB) who are inoperable or refuse surgery and meet organ function and performance status criteria.

Probably not a fit

Patients with significant comorbidities, poor organ function, or tumors not suitable for SBPT may derive little or no benefit and could experience treatment-related toxicity.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This prospective interventional study uses hypofractionated stereotactic body proton therapy (SBPT) to treat patients with early-stage NSCLC (cT1-3 N0M0, stage IA-IIB) who are inoperable or refuse surgery. Patients are categorized as peripheral or central tumor types and receive SBPT with dose regimens of 48-60 Gy(RBE) in 4-6 fractions for peripheral tumors or 50-70 Gy(RBE) in 10-15 fractions for central tumors. The trial aims to observe short-term and long-term efficacy, adverse events, and quality of life through post-treatment follow-up. Outcomes will inform feasibility, safety, and potential benefits of SBPT in this patient population.

Why it matters

Potential benefit: If successful, SBPT could provide effective tumor control with a convenient, shorter treatment course and potentially favorable quality of life for early-stage NSCLC patients who cannot undergo surgery.

How similar studies have gone: Prior radiotherapy approaches for early-stage NSCLC have shown promise with SBRT; the use of proton therapy is less established but has shown safety signals in similar settings.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. .Lung cancer confirmed by histology and/or cytology; and in the absence of pathological diagnosis, patients who meet the following conditions can also be included: diagnosed by more than 2 imaging modalities, and the clinical diagnosis of lung cancer is confirmed after multidisciplinary team (MDT) discussion.
2. The clinical staging based on positron emission tomography(PET)-computer tomography(CT) examination is: cT1\~3 N0M0, stage IA-IIB (AJCC eighth edition).
3. Age: 18 years and above.
4. Karnofsky(KPS) score ≥60.
5. The doctor assesses that surgical treatment is not suitable or the patient refuses surgery.
6. Relatively good organ function:
7. Normal bone marrow function: white blood cell (WBC)≥3×109/L, Platelet ≥80×109/L, Hemoglobin(HGB)≥90g/L
8. Normal liver and kidney function:
9. Total bilirubin, Aspartate Aminotransferase(AST), and ALT(Alanine Aminotransferase)≤2.0×upper limit of normal values;
10. Creatinine clearance ≥60ml/min or creatinine ≤1.5×upper limit of normal value
11. The patient has signed an informed consent form and is willing and able to comply with planned study visits, treatment plans, laboratory tests, and other study procedures.

Exclusion Criteria:

1. Patients with other malignant tumors.
2. Poorly controlled heart failure, respiratory failure, heart function, and lung function below grade 3 (including grade 3).
3. Those whose laboratory test values do not meet relevant standards before enrollment.
4. Patients who cannot cooperate with regular follow-up due to psychological, social, family and geographical reasons.
5. Women of childbearing age who have a positive pregnancy test and women who are breastfeeding.
6. Patients considered inappropriate for inclusion by other investigators.

Where it's running

  • Guangzhou Concord Cancer Center
    Guangzhou, Guangdong, China
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.