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Published on: December 28, 2017
[Angiogenesis inhibitors and radiation therapy: concept and preliminary results]
R Mazeron1, J Bourhis, E Deutsch
1UPRES EA2710, laboratoire de radiosensibilité des tumeurs et des tissus sains, institut Gustave-Roussy, Villejuif, France.
Abstract:
Angiogenesis is a crucial requirement for tumorigenesis and metastatic diffusion. Recent improvements in the knowledge of these processes allowed the development of multiple inhibitors, among these, three have been approved. Today, none of these drugs is available in combination with radiation therapy. However, multiple preclinical showed synergistic effect. This effect could be explained by a transitory improvement of tumor hypoxia, leading to higher radiation sensitivity. Hence, further studies need to be conducted to assess toxicities, doses and sequences of the combination. Numerous of phases I and II clinical trials are ongoing and answers are awaited.
Insights
Angiogenesis inhibitors show promise when combined with radiation therapy, potentially improving tumor sensitivity. Further clinical trials are needed to determine optimal use and safety for cancer treatment.
Area of Science:
- Oncology
- Cancer Biology
- Pharmacology
Context:
- Angiogenesis is vital for tumor growth and metastasis.
- Several anti-angiogenic drugs are approved, but not for combination therapy.
- Preclinical data suggest synergistic effects between inhibitors and radiation.
Purpose:
- To explore the potential of combining angiogenesis inhibitors with radiation therapy.
- To investigate the mechanisms behind the synergistic effect, such as modulation of tumor hypoxia.
- To highlight the need for further clinical evaluation of this combination.
Summary:
- Angiogenesis inhibitors are crucial in cancer therapy, yet their combination with radiation therapy remains underexplored clinically.
- Preclinical studies indicate a synergistic effect, possibly due to transiently reduced tumor hypoxia, enhancing radiation sensitivity.
- Ongoing Phase I and II trials aim to establish the safety, optimal dosing, and sequencing for this combination therapy.
Impact:
- This research could lead to novel, more effective cancer treatment strategies.
- Understanding the interplay between angiogenesis inhibitors and radiation may improve patient outcomes.
- Successful clinical translation could expand therapeutic options for various cancers.
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