Personalizing chronotherapy of immune checkpoint blockade

Area of Science:

• Immunology
• Chronobiology
• Oncology

Background:

• Emerging evidence suggests time-of-day (ToD) influences immunotherapy effectiveness.
• Immune checkpoint inhibitors (ICIs) show improved efficacy when given earlier in the day.
• The circadian system regulates physiological processes, including immune function.

Purpose of the Study:

• To propose leveraging individual chronotype to personalize ICI administration timing.
• To enhance the effectiveness of cancer immunotherapy through chronotype-based scheduling.
• To highlight the need for chronotype-informed clinical trials in immuno-oncology.

Main Methods:

• Review of retrospective studies on ToD effects in immunotherapy.
• Analysis of the role of chronotype in biological rhythms and healthcare outcomes.
• Proposal for clinical-translational studies to validate chronotype-based scheduling.

Main Results:

• Retrospective data indicate earlier administration of ICIs correlates with improved efficacy.
• Chronotype, an individual's biological rhythm, is a potential predictor of health outcomes.
• Current protocols lack personalization regarding treatment timing.

Conclusions:

• Chronotype represents a low-cost, minimally invasive strategy for personalizing immunotherapy.
• Implementing chronotype-based scheduling requires rigorous clinical validation.
• Personalizing ICI timing based on chronotype could revolutionize cancer immunotherapy.