Time-of-Day Immunotherapy Administration and Outcomes in Advanced Cancers: A Systematic Review and - Report - MDSpire

Time-of-Day Immunotherapy Administration and Outcomes in Advanced Cancers: A Systematic Review and

  • By

  • Shota Inoue

  • Ichiro Tsuboi

  • Marcin Miszczyk

  • Keiichiro Miyajima

  • Navid Roessler

  • Ahmed R. Alfarhan

  • Satoshi Katayama

  • Pierre I. Karakiewicz

  • Motoo Araki

  • Shahrokh F. Shariat

  • May 5, 2026

  • 0 min

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Clinical Report: Circadian Timing of Immunotherapy Administration and Its Impact on Outcomes in Advanced Cancer

Overview

This systematic review and meta-analysis evaluates the association between the timing of immune checkpoint inhibitor (ICI) administration and oncologic outcomes in patients with advanced solid tumors. The findings suggest that early administration of ICIs may be linked to improved overall and progression-free survival.

Background

Immune checkpoint inhibitors have revolutionized cancer treatment, yet their effectiveness may be influenced by circadian rhythms that govern immune function. Understanding the optimal timing for ICI administration could enhance treatment outcomes and inform clinical practice. This review aims to clarify the role of chronotherapy in immunotherapy for advanced cancers.

Data Highlights

No numerical data was provided in the source material.

Key Findings

  • ICIs block inhibitory pathways to enhance antitumor T-cell activity.
  • Circadian rhythms influence immune cell function and checkpoint molecule expression.
  • Most evidence on timing of ICI administration comes from retrospective studies.
  • Only one randomized clinical trial has been reported on this topic.
  • Early administration of ICIs may correlate with better survival outcomes.
  • Current clinical guidelines do not yet incorporate circadian timing into standard immunotherapy protocols.

Clinical Implications

Clinicians should consider the timing of ICI administration as a potential factor influencing treatment efficacy. Further prospective studies are needed to validate the benefits of morning versus afternoon infusions in clinical practice.

Conclusion

Aligning ICI administration with circadian rhythms may improve patient outcomes in advanced cancer treatment. Continued research is essential to establish definitive guidelines.

References

  1. The ASCO Post, 2021 -- Impact of Time of Day of Immune Checkpoint Inhibitor Infusion on Overall Survival in Patients With Metastatic Melanoma
  2. Springer, 2024 -- Innovations in Colorectal Cancer Immunotherapy: An In-Depth Analysis of Approaches, Obstacles, and Future Directions
  3. The ASCO Post, 2022 -- Immunotherapy for Gastrointestinal Malignancies: Is It Ready for Prime Time?
  4. The ASCO Post, 2016 -- Pearls for Managing Immune-Related Toxicities
  5. NCCN GUIDELINES® INSIGHTS -- Management of Immunotherapy
  6. ScienceDirect, 2025 -- The impact of the time-of-day in the administration of immunotherapy and its efficacy in patients with advanced melanoma: A retrospective observational study
  7. NCI -- Morning Versus Afternoon Administration of Immunotherapy for the Treatment of Advanced or Metastatic Solid Tumors, The Knight SHIFT Study
  8. NCCN Guidelines Insights
  9. The impact of the time-of-day in the administration of immunotherapy
  10. Morning Versus Afternoon Administration of Immunotherapy for the Treatment of Advanced or Metastatic Solid Tumors, The Knight SHIFT Study - NCI

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