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Clinical Trial Summary

Despite multimodal therapy, patients with esophageal cancer have poor prognosis with 5-year overall survival around 25%. Considering tumor-related death as main reason for high mortality rate in those patients, treatment-related cardio-pulmonary toxicities could also play a role in this regard. Online adaptive radiotherapy offers the possibility for daily re-planning and therefore helps radiation oncologists to better spare the organs at risk and reduce radiation-induced toxicity. Tha aim of ARTEC is to assess the pulmonary toxicity in patients with esophageal cancer treated with online adaptive radiotherapy.


Clinical Trial Description

Esophageal cancer (EC) is currently the tenth most common cancer and sixth leading cause of cancer-related mortality worldwide. Multimodal treatment strategy consisting of surgery with pre-/perioperative Radio-/chemotherapy (RCHT) regimens the standard of care for non-metastatic locally advanced EC. However, the treatment of EC is challenging and the risk of tumor recurrence remains high. Furthermore, toxicities of such combined treatments can be substantial and there is room for optimization of RT to reduce the radiation dose to heart and lungs. While 3D-conformal radiotherapy is traditionally used for treatment of EC, modern irradiation techniques, such as intensity-modulated radiotherapy (IMRT) or volumetric intensity modulated arc therapy (VMAT), are increasingly implemented in the management of EC. The investigators know from literature that esophageal motion could be a challenge and therefore bigger margins are needed to achieve an acceptable tumor coverage. In addition to positioning and motion uncertainties, there could be a substantial inter-fractional tumor size reduction during RCHT. Tumor shrinkage can consequently lead to OARs shifting into the target volumes, which results in excess radiation dose to OARs with increased toxicity. Adaptive radiotherapy (ART) is a treatment technique to do a re-planning during the course of treatment to adjust the delivery of radiation dose based on geometrical changes of tumor and OARs. Considering the uncertainties in OAR and tumor displacement positioning, as well as tumor size reduction during RCHT, makes EC a perfect candidate for ART. This single-arm prospective study aims to assess pulmonary toxicity and dosimetrical analysis of ART for EC. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT06361043
Study type Observational
Source Insel Gruppe AG, University Hospital Bern
Contact Hossein Hemmatazad, MD
Phone +41 31 632 26 32
Email Hossein.Hemmatazad@insel.ch
Status Recruiting
Phase
Start date April 20, 2024
Completion date February 28, 2027

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