Toward a consensus on the tumor microbiota: Evidence, standards, and interpretation

Area of Science:

• Oncology
• Microbiology
• Cancer Research

Background:

• Tumors contain microbial communities that impact cancer development and treatment.
• Research in this area faces significant technical and interpretive hurdles.
• Understanding the tumor microbiome is crucial for advancing cancer care.

Purpose of the Study:

• To synthesize evidence linking intratumoral microbes to cancer hallmarks.
• To critically evaluate current methods for detecting tumor microbes.
• To propose standards for robustly establishing microbial presence, viability, and causality within tumors.

Main Methods:

• Literature synthesis of functional and mechanistic studies.
• Critical analysis of existing microbial detection techniques.
• Development of proposed minimal technical and reporting standards.

Main Results:

• Intratumoral microbes are linked to key cancer hallmarks.
• Current detection methods have limitations and potential pitfalls.
• Standardized approaches are needed to validate microbial roles.

Conclusions:

• Establishing standardized methods is essential for the tumor microbiota field.
• Addressing technical challenges will lead to clinically actionable insights.
• Robust detection of intratumoral microbes will advance cancer therapy.