An Expert, Multidisciplinary Perspective on Best Practices in Biomarker Testing in Intrahepatic Cholangiocarcinoma

Area of Science:

• Oncology
• Gastroenterology
• Pathology

Background:

• Intrahepatic cholangiocarcinoma (iCCA) is a rare, aggressive liver cancer with poor prognosis.
• Treatment options for advanced iCCA were historically limited to chemotherapy.
• Biomarker testing reveals actionable genetic alterations in 40-50% of iCCA patients, enabling precision medicine.

Purpose of the Study:

• To address challenges in tissue acquisition for biomarker testing in iCCA.
• To establish evidence-based guidelines for optimizing tissue collection and analysis.
• To improve the application of precision medicine in iCCA treatment.

Main Methods:

• A multidisciplinary expert team reviewed current practices in image-guided liver biopsy for iCCA.
• Identified variability in imaging modality, biopsy technique, specimen handling, and team communication.
• Synthesized findings to propose best practices for tissue collection and biomarker testing.

Main Results:

• Variability in tissue acquisition techniques impacts the reliability of biomarker testing.
• The desmoplastic nature of iCCA poses challenges for adequate tissue sampling.
• Lack of standardized protocols hinders effective biomarker analysis.

Conclusions:

• Optimizing tissue collection through standardized, image-guided biopsy techniques is crucial for iCCA biomarker testing.
• Enhanced multidisciplinary team communication is essential for successful biomarker analysis.
• Implementing these best practices will improve the utility of precision medicine for iCCA patients.