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Updated: May 6, 2026

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
Published on: February 6, 2019
Targeted drugs in combination with radiotherapy for the treatment of solid tumors: current state and future
Edgar Selzer1, Gabriela Kornek
1Department of Radiation Oncology, Medical University of Vienna, Vienna, Austria.
Abstract:
The continuously rising use of novel drugs, especially of molecules belonging to the group of targeted drugs is now shaping the therapeutic landscape. However, treatment combinations of targeted drugs with radiotherapy are still rare. Only the monoclonal antibody cetuximab (Erbitux®) has been approved for the treatment of locally advanced squamous cell cancer of the head and neck in combination with radiotherapy. Several targeted compounds are in advanced stages of clinical development for combination treatments with radiotherapy, of which substances with either anti-EGFR or anti-angiogenic mechanisms, such as trastuzumab, panitumumab, erlotinib, cilengitide and bevacizumab are the most promising. Aim of this article is to provide, mainly from a radio-oncological point of view, an overview about the current state as well as to give an outlook on the near future of the most advanced targeted combined treatment concepts for solid tumors.
Insights
Targeted drugs combined with radiotherapy show promise for solid tumors. While cetuximab is approved, several other targeted agents are in development for enhanced cancer treatment strategies.
Area of Science:
- Oncology
- Radiotherapy
- Pharmacology
Background:
- Novel targeted drugs are increasingly used in cancer therapy.
- Combinations of targeted drugs with radiotherapy are currently limited.
- Cetuximab is the only approved targeted drug for combined use with radiotherapy in head and neck cancer.
Purpose of the Study:
- To review the current status and future outlook of targeted drug and radiotherapy combinations for solid tumors.
- To provide a radio-oncological perspective on advanced targeted combined treatment concepts.
Main Methods:
- Literature review of targeted therapies and their combination with radiotherapy.
- Focus on anti-EGFR and anti-angiogenic targeted agents.
- Analysis of clinical development stages for promising compounds.
Main Results:
- Several targeted compounds, including trastuzumab, panitumumab, erlotinib, cilengitide, and bevacizumab, are in advanced clinical development.
- These agents, targeting EGFR or angiogenesis, are considered promising for combination therapies.
- The landscape of targeted drug-radiotherapy combinations is evolving rapidly.
Conclusions:
- Targeted drug-radiotherapy combinations represent a significant area of development in oncology.
- Further research and clinical trials are needed to establish the efficacy and safety of these combinations.
- The integration of targeted therapies with radiotherapy holds potential for improved solid tumor treatment outcomes.
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