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Measurement of Liver Stiffness Using Atomic Force Microscopy Coupled with Polarization Microscopy
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Baseline and Longitudinal Liver Stiffness Measurement Predict Outcomes in Primary Biliary Cholangitis: A Multicenter

Yuki Yamashita1, Takefumi Kimura1,2, Kaede Fujita1

  • 1Department of Medicine, Division of Hepatology and Gastroenterology, Shinshu University School of Medicine, Matsumoto, Japan.

Hepatology Research : the Official Journal of the Japan Society of Hepatology
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PubMed
Summary

Both baseline and increasing liver stiffness measurements (LSM) predict adverse outcomes in primary biliary cholangitis (PBC). This suggests closer monitoring or earlier treatment may be needed for patients with rising LSM.

Keywords:
liver stiffness measurementprimary biliary cholangitisprognosis

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Area of Science:

  • Hepatology
  • Noninvasive liver assessment
  • Prognostic biomarkers

Background:

  • Primary biliary cholangitis (PBC) is a chronic liver disease.
  • Liver stiffness measurement (LSM) via vibration-controlled transient elastography (VCTE) assesses PBC severity.
  • The prognostic role of longitudinal LSM changes in Asian populations is understudied.

Purpose of the Study:

  • To evaluate baseline and dynamic LSM for predicting adverse outcomes in Japanese PBC patients.
  • To assess the clinical significance of LSM changes over time.

Main Methods:

  • Retrospective cohort study of 454 Japanese PBC patients.
  • Vibration-controlled transient elastography (VCTE) used for LSM.
  • Primary outcome: composite of liver-related events, liver transplantation, and all-cause mortality.
  • Statistical analysis: Kaplan-Meier, Cox models, ROC analysis for baseline LSM and annual LSM changes (ΔLSM/year).

Main Results:

  • Median follow-up: 4.2 years.
  • Baseline LSM ≥ 8.0 kPa independently predicted all-cause mortality (HR 4.79).
  • ΔLSM/year ≥ 2.1 kPa was associated with significantly lower 5-year survival and event-free survival.
  • Baseline LSM showed high predictive value for liver-related events (AUC 0.803).
  • LSM ≥ 8.0 kPa stratified prognosis even with normalized alkaline phosphatase.

Conclusions:

  • Both baseline and increasing LSM predict adverse outcomes in PBC.
  • LSM dynamics can indicate the need for closer monitoring or earlier therapeutic intervention.