Beyond the tumor: the role of the gut microbiome in triple-negative breast cancer - Summary - MDSpire

Beyond the tumor: the role of the gut microbiome in triple-negative breast cancer

  • By

  • Armina Saadatkhah

  • Laura Nicholson

  • Thomas A. Buchholz

  • Lee Hong

  • May 22, 2026

  • 0 min

Share

Objective:

To review the current evidence on how the gut microbiome influences triple-negative breast cancer (TNBC) biology, particularly regarding the immune microenvironment, treatment responses, and potential therapeutic interventions.

Key Findings:
  • Dysbiosis is linked to cancer initiation, progression, and therapy resistance in TNBC.
  • Higher microbial diversity and SCFA-producing taxa are associated with improved treatment responses.
  • Obesity and antibiotic exposure contribute to dysbiosis, leading to chronic inflammation and worse outcomes.
  • Distinct intratumoral microbiomes may influence local immune responses and tumor dynamics.
Interpretation:

The gut microbiome plays a significant role in regulating immune responses and treatment efficacy in TNBC, suggesting potential avenues for therapeutic intervention.

Limitations:
  • The review does not provide direct clinical trial data linking microbiome interventions to TNBC outcomes, which limits the applicability of findings.
  • Further research is needed to establish causative relationships between microbiome alterations and TNBC progression, particularly in clinical settings.
Conclusion:

Understanding the gut microbiome's impact on TNBC may lead to improved management strategies and patient outcomes, including potential microbiome-targeted therapies.

Original Source(s)

Related Content