Immune-Enhancing Nutrition and Outcomes After Radical Cystectomy: A Randomized Clinical Trial - Report - MDSpire

Nutritional Interventions to Boost Immunity and Their Impact on Recovery Following Radical Cystectomy: Results from a Randomized Clinical Study

  • By

  • Jill M. Hamilton-Reeves

  • Joseph M. Unger

  • Jeffrey M. Holzbeierlein

  • Danika L. Lew

  • J. Ryan Mark

  • Siamak Daneshmand

  • Seth P. Lerner

  • Janet E. B. Kukreja

  • Eugene K. Lee

  • William B. Tabayoyong

  • Dawn L. Hershman

  • Michael J. Fisch

  • N. Lynn Henry

  • July 20, 2026

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Clinical Report: Nutritional Interventions to Boost Immunity and Their Impact

Overview

This randomized clinical study evaluates the effects of specialized immunonutrition (SIM) versus standard oral nutrition support (ONS) on postoperative complications following radical cystectomy (RC) for bladder cancer. The trial aims to determine whether SIM can reduce the incidence and severity of complications in this patient population, specifically focusing on postoperative complications within 30 days post-surgery.

Background

Radical cystectomy is a significant surgical intervention for muscle-invasive bladder cancer, often leading to substantial physiological stress and increased susceptibility to infections. Enhanced Recovery After Surgery (ERAS) protocols emphasize the importance of perioperative nutrition to optimize recovery and outcomes. However, the evidence supporting the use of immunonutrition remains inconclusive, highlighting the need for further investigation, as noted in recent reviews.

Data Highlights

No numerical data provided in the source material.

Key Findings

  • Specialized immunonutrition (SIM) includes l-arginine, ω-3 fatty acids, and dietary nucleotides, which may mitigate the effects of radical cystectomy.
  • Previous phase 2 trials indicated that perioperative SIM reduced 90-day complications by 33% and infections by 39%.
  • The SWOG S1600 trial is a phase 3 study designed to compare SIM with standard oral nutrition support (ONS) in patients undergoing radical cystectomy.
  • Participants were randomized 1:1 to receive either SIM or ONS, with both groups receiving identical caloric content and protein levels.
  • All participants were assessed for baseline nutritional status using the Patient-Generated Subjective Global Assessment (PG-SGA).

Clinical Implications

The findings from this trial may provide insights into the role of immunonutrition in enhancing recovery and reducing complications in patients undergoing radical cystectomy.

Conclusion

This study aims to clarify the potential benefits of specialized immunonutrition in reducing postoperative complications following radical cystectomy.

Related Resources & Content

  1. A Decade of Research on Immunonutrition in Surgical Patients with Cancer: An Overview of Perioperative Impacts, 2013 -- Springer
  2. Impact of Immunonutrition on Surgical Outcomes in Colorectal Cancer Patients: A Meta-Analytic Review, 2017 -- Springer
  3. Enhanced Recovery Protocols Promote Clinical Outcomes and Immune Function Following Elective Colorectal Cancer Surgery: A Randomized Controlled Trial, 2012 -- Springer
  4. EAU Guidelines on MIBC - DISEASE MANAGEMENT, 2026 -- EAU
  5. Impact of perioperative nutrition on recovery after radical cystectomy: a randomised trial, 2026 -- BJU International
  6. Frontiers in Oncology — Nutritional interventions in cancer management: a comprehensive scoping review
  7. EAU Guidelines on MIBC - DISEASE MANAGEMENT
  8. Impact of perioperative nutrition on recovery after radical cystectomy: a randomised trial - Amer - 2026 - BJU International - Wiley Online Library
  9. Immunonutrition in minimally invasive major abdominal surgery: A systematic review and meta-analysis of randomized clinical trials - ScienceDirect

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