The goal of this observational study is to achieve early diagnosis of Primary Biliary Cholangitis (PBC) in patients with positive Anti-Mitochondrial Antibodies (AMA) and Normal Alkaline Phosphatase (ALP) in adults aged 18-80 years with positive AMA and normal ALP. The main question it aims to answer is: • Are there any predictive factors for histological PBC in patients with positive AMA and normal ALP? Participants will undergo a liver biopsy and specific blood tests if eligible based on inclusion and exclusion criteria.
Study Type
OBSERVATIONAL
Enrollment
80
Hospital Universitario La Paz
Madrid, Spain
Scheuer's criteria
Liver biopsy samples
Time frame: Just once, at enrollment
Enhanced Liver Fibrosis (ELF) Score
Utilizes biomarkers such as hyaluronic acid, tissue inhibitor of metalloproteinase-1 (TIMP-1), and procollagen III amino-terminal peptide (PIIINP)
Time frame: Just once, at enrollment
Fibroblast Growth Factor 19 (FGF-19)
Provides insights into bile acid regulation and metabolic liver function. Quantified using enzyme-linked immunosorbent assay (ELISA)
Time frame: Just once, at enrollment
Tumor Necrosis Factor-alpha (TNF-α)
Measured via high-sensitivity ELISA to assess inflammatory status
Time frame: Just once, at enrollment
Cytokine Profiling (Interleukin-6, -12, -23)
Serum cytokine levels will be determined using multiplex immunoassays
Time frame: Just once, at enrollment
Transforming Growth Factor-beta (TGF-β)
Quantified via ELISA to evaluate its role in fibrosis and immune regulation
Time frame: Just once, at enrollment
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