Testing a new radiotherapy approach for non-small cell lung cancer

Feasibility of Primer Shot Radiotherapy for Non-small Cell Lung Cancer - PRIMER

Not applicable Interventional The Netherlands Cancer Institute · NCT06528743

This study is testing a new way of giving radiotherapy to see if it helps people with advanced non-small cell lung cancer feel better by using breaks in treatment to make the tumors more sensitive to the radiation.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment34 (estimated)
Ages18 Years and up
SexAll
SponsorThe Netherlands Cancer Institute Academic / other
Locations1 site (Amsterdam)
Trial IDNCT06528743 on ClinicalTrials.gov

What this trial studies

This study evaluates the safety and feasibility of a novel radiotherapy technique called primer shot fractionation for patients with non-small cell lung cancer (NSCLC). The approach involves administering an initial radiotherapy fraction followed by a treatment break to enhance tumor radiosensitivity through reoxygenation. The trial is designed as a prospective non-randomized feasibility study, utilizing a 3+3 phase design to assess increasing treatment breaks and includes an expansion cohort for further evaluation. Patients with stage 2-4 NSCLC who are referred for palliative radiotherapy will be included in the study.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with stage 2-4 non-small cell lung cancer referred for palliative radiotherapy.

Not a fit: Patients with interstitial lung disease or those who have received prior thoracic radiotherapy overlapping with the current treatment plan may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could improve treatment outcomes for patients with advanced non-small cell lung cancer by enhancing the effectiveness of radiotherapy.

How similar studies have performed: While this approach is innovative, similar studies have not been widely reported, indicating that this may be a novel exploration in the field.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age ≥ 18 years
* NSCLC (either pathology proven or sufficient clinical suspicion to be treated as NSCLC), referred for palliative radiotherapy of at least the primary tumor site.
* Stage 2-4
* WHO performance score 0-2.
* Provision of signed, written and dated IC prior to any study specific procedures.

Exclusion Criteria:

* Interstitial lung disease
* Treatment with vascular endothelial growth factor receptor (VEGFR) inhibitors
* Prior thoracic radiotherapy (\>20 Gy EQD2 a/b 3) overlapping with the current planning target volume

Where this trial is running

Amsterdam

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Patients With Non-small-cell Lung Cancer
Last reviewed 2026-06-13 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.