Impact of Obesity on Survival Rates and Chemotherapy Efficacy in Stage IV Colorectal Cancer: A Retrospective Analysis - Summary - MDSpire

Impact of Obesity on Survival Rates and Chemotherapy Efficacy in Stage IV Colorectal Cancer: A Retrospective Analysis

  • By

  • Catherine G. Tran

  • Carine Dornbush

  • Braden S. Jensen

  • Sarah L. Mott

  • Elise E. H. Fannon

  • Austin C. Stark

  • Meghan E. Mali

  • Daniel J. Berg

  • Erin E. Talbert

  • Carlos H. F. Chan

  • February 5, 2026

  • 0 min

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Objective:

To determine the association between BMI, survival outcomes, and chemotherapy duration in patients with stage IV colorectal cancer (CRC).

Key Findings:
  • Median overall survival (OS) was 20.9 months for the cohort.
  • Median OS for normal weight (NW), overweight, and obese patients was 18.2, 22.3, and 24.0 months, respectively.
  • Obese patients had a higher likelihood of N2 disease compared to NW and overweight patients.
  • After adjustment, NW and overweight patients had a higher risk of death compared to obese patients.
Interpretation:

Obesity may be associated with improved survival outcomes in stage IV CRC, contradicting previous assumptions about BMI as a negative prognostic factor.

Limitations:
  • Single institution study may limit generalizability.
  • Retrospective design may introduce biases.
Conclusion:

The study suggests that obesity may confer a survival advantage in stage IV CRC, challenging the traditional view of BMI as a negative prognostic factor.

Original Source(s)

Impact of Obesity on Survival Rates and Chemotherapy Efficacy in Stage IV Colorectal Cancer: A Retrospective Analysis

  • by Catherine G. Tran, Carine Dornbush, Braden S. Jensen, Sarah L. Mott, Elise E. H. Fannon, Austin C. Stark, Meghan E. Mali, Daniel J. Berg, Erin E. Talbert, Carlos H. F. Chan

  • February 5, 2026

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