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Screening of patients with atypical primary biliary cholangitis (PBC) or primary sclerosing cholangitis (PSC) for genetic defects in hepatocanalicular transporters

Screening of patients with atypical primary biliary cholangitis (PBC) or primary sclerosing cholangitis (PSC) for genetic defects in hepatocanalicular transporters - TAPP Trial

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
DRKS
Registry ID
DRKS00033902
Enrollment
250
Registered
2024-11-21
Start date
2025-01-01
Completion date
Unknown
Last updated
2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

K76.8

Interventions

Group 1: Patients with atypical PBC (defined as AMA-negative PBC without histological confirmation), or atypical PSC (defined as large- or small-duct PSC without concomitant inflammatory bowel disease
whole exome sequencing (WES) with digital panel analysis of 46 cholestasis-associated genes is performed in these patients to identify individuals with a hereditary cholestatic liver disease in this c

Sponsors

Leipzig University Medical Center, Department of Medicine II, Division of Hepatology
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: - Written consent of the patient for participation in the study as well as for the associated genetic analyses - Patients with atypical or typical PBC or PSC - Patients with hepatitis C virus infection in sustained virological response after antiviral therapy, with normal liver values and no indication of structural liver damage

Exclusion criteria

Exclusion criteria: - Patient’s refusal for study inclusion - Age 1:320, LKM-1) and elevated IgG), IgG4-associated cholangitis (confirmed by detection of significantly elevated serum IgG4 levels = 4x ULN and/or corresponding histology), previously confirmed diagnosis of hereditary intrahepatic cholestasis

Design outcomes

Primary

MeasureTime frame
Evaluate the frequency of heterozygous or homozygous class 3-5 variants, and the combination of heterozygous or homozygous class 3-5 variants in cholestasis associated genes in patients with atypical PBC or PSC compared to healthy and disease control patients

Secondary

MeasureTime frame
Evaluate the relationship between genotype and phenotype in patients with heterozygous or homozygous class 3-5 variants in cholestasis associated genes

Countries

Germany

Contacts

Public ContactToni Herta

Leipzig University Medical Center, Department of Medicine II, Division of Hepatology

Toni.Herta@medizin.uni-leipzig.de+49 341 97 12330

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026