Fecal Volatile Organic Compounds Show Promise for Colorectal Cancer Detection

Strategic Insights -

A new study published in the journal Computers in Biology and Medicine has found that fecal volatile organic compounds (VOCs) may hold significant promise for detecting colorectal cancer (CRC). Researchers from McMaster University, led by Ziya Sastimoglu, conducted a systematic review and meta-analysis of seven studies assessing the diagnostic performance of fecal VOC analysis for CRC detection and monitoring.

The study aimed to address the challenges hindering the clinical adoption of fecal VOC analysis, including methodological variability, lack of standardization, and limited validation. The researchers found that fecal VOC analysis showed a pooled sensitivity of 0.86 and specificity of 0.90 for CRC detection, supported by an area under the summary receiver operating characteristic (SROC) curve of 0.89. However, they also noted considerable heterogeneity in specificity across studies, which highlights the need for further research and standardization.

Key Takeaways:

  • Fecal VOC analysis has been shown to have a pooled sensitivity of 0.86 and specificity of 0.90 for CRC detection.
  • The study found considerable heterogeneity in specificity across studies, indicating the need for further research and standardization.
  • The existing literature is limited, with only seven studies meeting the inclusion criteria for the review.
  • Fecal VOC analysis has the potential to be used for CRC staging and post-treatment monitoring, but further research is needed.
  • The integration of VOC analysis with other diagnostic techniques may enhance its clinical utility.
  • Standardizing procedures and conducting multi-center validation studies are critical for maximizing the potential of fecal VOC analysis for CRC detection.

Statistics:

  • Pooled sensitivity of 0.86 for CRC detection.
  • Pooled specificity of 0.90 for CRC detection.
  • Area under the summary receiver operating characteristic (SROC) curve of 0.89.

Sources:

  • Fecal volatile organic compounds for colorectal cancer detection: A systematic review and meta-analysis. Computers in Biology and Medicine, 2025;195:110561.
  • Pergamon-elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; Computers in Biology and Medicine - www.journals.elsevier.com/computers-in-biology-and-medicine/)
  • Electrical and Computer Engineering, McMaster University, Hamilton, Ontario, Canada.