Navigating the Critical Translational Questions for Implementing FLASH in the Clinic.

Area of Science:

• Oncology
• Radiation Oncology
• Medical Physics

Background:

• The "FLASH effect" demonstrates improved therapeutic index by reducing normal tissue toxicity with ultra-rapid irradiation.
• This phenomenon is observed across various preclinical in vivo tumor and normal tissue models.
• The underlying biological mechanisms of the FLASH effect require further elucidation.

Purpose of the Study:

• To review preclinical data addressing critical translational questions for clinical implementation of FLASH therapy.
• To identify technological considerations for different beam types (electron, proton, photon) in FLASH therapy.
• To inform strategies for future FLASH cancer therapy clinical trials based on existing evidence.

Main Methods:

• Review of available preclinical data on the FLASH effect.
• Analysis of translational questions relevant to clinical trials.
• Evaluation of technological aspects for electron, proton, and photon beams.

Main Results:

• Preclinical data supports the potential of the FLASH effect for enhanced cancer therapy.
• Critical translational and technological questions are identified for advancing FLASH therapy.
• Existing data can guide the design of safe and effective clinical trials.

Conclusions:

• Addressing translational and technological challenges is crucial for clinical FLASH therapy.
• Further research is needed to fully understand and implement the FLASH effect.
• Strategic planning based on preclinical data is essential for successful clinical trials.