Adaptive radiotherapy using a new linear accelerator for cancer treatment

A Prospective Study on Online Adaptive Radiotherapy (ART) Using the ETHOS Linear Accelerator for Various Tumor Entities and the Feasibility of Integrating Multi-Parametric Patient Data Into the Adaptive Workflow

Charite University, Berlin, Germany · NCT06116019

This study is testing a new way to adjust radiation therapy for cancer patients each day based on changes in their tumors to see if it improves treatment.

Quick facts

Study typeObservational
Enrollment649 (estimated)
Ages18 Years and up
SexAll
SponsorCharite University, Berlin, Germany (other)
Drugs / interventionsradiation
Locations1 site (Berlin)
Trial IDNCT06116019 on ClinicalTrials.gov

What this trial studies

This study evaluates the use of the Varian/SHS ETHOS treatment system for online adaptive radiotherapy (ART) in patients with various types of cancer. It aims to dynamically adjust radiation treatment plans on a daily basis to accommodate changes in tumor size or position, utilizing cone beam computed tomography for real-time imaging. The study will assess the feasibility and acceptability of ART across different tumor types and integrate patient-reported outcomes to enhance treatment monitoring. This is an observational study that will gather data over several weeks of therapy.

Who should consider this trial

Good fit: Ideal candidates include adult patients over 18 years old with any tumor type requiring radiotherapy or chemoradiotherapy.

Not a fit: Patients who are pregnant or unable to provide informed consent will not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could lead to more precise and effective radiation therapy, improving treatment outcomes for cancer patients.

How similar studies have performed: While the concept of adaptive radiotherapy is established, the specific application of the ETHOS system represents a novel approach that has not been widely tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adult patients (\>18 years)
* All tumor entities with an indication for radiotherapy and/or chemoradiotherapy
* Signed informed consent

Exclusion Criteria:

* Pregnancy
* Patients who are not capable of giving consent

Where this trial is running

Berlin

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.

View on ClinicalTrials.gov →

Conditions: Prostate Cancer, Head and Neck Cancer, NSCLC, SCLC, Esophageal Cancer, Bladder Cancer, Rectum Cancer, Cervix Cancer

Last reviewed 2026-05-15 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.