Skip to content

Online Adaptive Radiotherapy Using a Novel Linear Accelerator (ETHOS)

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

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT06116019
Acronym
ART-02
Enrollment
649
Registered
2023-11-03
Start date
2023-10-11
Completion date
2027-10-09
Last updated
2023-11-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bladder Cancer, Cervix Cancer, Esophageal Cancer, Head and Neck Cancer, NSCLC, Other Carcinoma, Prostate Cancer, Rectum Cancer, SCLC

Keywords

online adaptive radiation therapy, ART, cone beam CT, ePROMS

Brief summary

The study focuses on the scientific and clinical evaluation of online adaptive radiotherapy (ART) using the Varian/SHS ETHOS treatment system. In this study, radiation treatment plans are dynamically adjusted on a daily basis over several weeks of therapy to account for anatomical shifts in either the tumour or adjacent normal tissue - a capability that has been difficult to achieve due to technical limitations. With the ETHOS accelerator, such real-time adjustments can be made based on cone beam computed tomography (CBCT). This is a prospective observational study with the primary objective of investigating the feasibility and acceptability of performing ART with ETHOS for different tumour entities. The study will also evaluate the feasibility of integrating multi-parametric data sets into the ART workflow, such as standardised electronic feedback on treatment toxicity from both patients (ePROMS) and physicians (ePRT).

Interventions

Daily cone-beam CT based online adaptive radiation therapy

Sponsors

Charite University, Berlin, Germany
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum

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

Design outcomes

Primary

MeasureTime frameDescription
Number of Successfully Completed Adaptive Radiotherapy Sessions in Patients with Various Tumor EntitiesThroughout the treatment period, up to 6 weeks.This measure evaluates the success rate of adaptive radiotherapy sessions with ETHOS across different tumor types. It measures the total count of adaptive treatment sessions that were completed without interruption or complication for each patient.

Secondary

MeasureTime frameDescription
Number of Adaptive Radiotherapy Sessions with Dosimetric Benefits to Organs at Risk in Patients with Various Tumor EntitiesThroughout the treatment period, up to 6 weeks.This measure quantifies the adaptive treatment sessions for which a dosimetric advantage for organs at risk is detected in patients undergoing adaptive radiotherapy across different tumor types.
Number of Adaptive Radiotherapy Sessions with Dosimetric Benefit to Organs at Risk Following ePROMs and ePRT-based Plan Adjustments in Patients with Various Tumor EntitiesThroughout the treatment period, up to 6 weeks.This measure quantifies the adaptive treatment sessions for which in silico analysis identifies a potential dosimetric advantage to organs at risk following ePROMs and ePRT-based plan adjustments.
Patient Reported Toxicity2 yearsFrequency and severity of treatment-related toxicities in patients as scored using the Patient-Reported Outcomes version of the Common Terminology Criteria for Adverse Events (NCI-PRO-CTCAE)
Number of Adaptive Radiotherapy Sessions with Dosimetric Benefits to Target Coverage in Patients with Various Tumor EntitiesThroughout the treatment period, up to 6 weeks.This measure quantifies the adaptive treatment sessions for which a dosimetric advantage for target coverage is detected in patients undergoing adaptive radiotherapy across different tumor types.
Impact of Adaptive Radiotherapy on Patient Quality of Life Assessed by EORTC QLQ-C302 yearsThis measure evaluates the quality of life of patients undergoing adaptive radiotherapy using the EORTC QLQ-C30 scale.
Fatigue Levels in Patients Undergoing Adaptive Radiotherapy Assessed by FACIT-F2 yearsThis measure quantifies the fatigue experienced by patients undergoing adaptive radiotherapy as determined by the FACIT-F scale.
Local Control2 yearsFreedom from local progression after adaptive radiotherapy
Physician Reproted Toxicity2 yearsFrequency and severity of treatment-related toxicities in patients as scored using the the Common Terminology Criteria for Adverse Events (CTCAE)

Countries

Germany

Contacts

Primary ContactGoda Kalinauskaite, MD
goda.kalinauskaite@charite.de+49 30 450 527318
Backup ContactCarolin Senger, MD
carolin.senger@charite.de+49 30 450 527318

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026