Prospective comparison of liver stiffness measurement methods in surveillance biopsies after liver transplantation.
Front Transplant
; 2: 1148195, 2023.
Article
em En
| MEDLINE
| ID: mdl-38993851
ABSTRACT
Background:
Liver stiffness measurements (LSMs) have proven useful for non-invasive detection of fibrosis. Previous studies of LSMs after transplantation were performed in cohorts dominated by hepatitis C reinfections and indication biopsies for the evaluation of graft dysfunction. However, the diagnostic fidelity of LSMs for fibrosis is biased by inflammation e.g., during replicative hepatitis C or rejection. Materials andmethods:
The current study aimed for a head-to-head comparison of two different LSMs, acoustic radiation force impulse (ARFI) and transient elastography (TE), and a determination of cut-off values for the detection of advanced fibrosis (any LAF score component ≥2) in grafts undergoing surveillance biopsies (svLbx) without recurrent hepatitis C.Results:
103 svLbx were paired with valid LSMs at time of biopsy. AUROC analyses showed significant positive correlation with fibrosis for both methods (TE AUROC = 0.819 (p < 0.001; 95%CI 0.717-0.921); ARFI AUROC = 0.771 (p = 0.001; 95%CI 0.652-0.890). Patients were randomly assigned to training and validation cohorts for both LSM methods. Cut-off values were determined at 1.29â m/s (ARFI) and at 7.5â kPa (TE) in training cohorts. Sensitivity and specificity in training and validation cohorts were TE SEN 0.818 and 0.5; SPE 0.742 and 0.885; ARFI SEN 0.818 and 1.0; SPE 0.75 and 0.586. LSMs were not associated with BANFF criteria for relevant graft injury.Conclusion:
LSM is a good non-invasive tool to screen for advanced graft fibrosis but not for relevant graft injury in patients with (near) normal liver enzymes. Fibrosis cut-off values identified and validated in svLbx were lower than in previous cohorts using indication biopsies.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article