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arXiv · 2203.10508

Latent class mixed modelling for phenotypic stratification of primary biliary cholangitis patients on first line treatment

Victoria Mulcahy·Anais Rouanet·Alessio Gerussi·Adam Duckworth·Steve Flack·Marco Carbone·Brian Tom·George Mells
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Abstract

In patients with primary biliary cholangitis (PBC), the serum liver biochemistry measured during treatment with ursodeoxycholic acid (the UDCA response) accurately predicts long-term outcome. In this study we sought to use liver biochemistry, and in particular alkaline phosphatase (ALP), as a surrogate marker of disease activity, for phenotypic stratification in PBC using a computational modelling approach. Our aim here was to identify distinct disease subgroups of patients with distinct disease trajectories. Methods: We used longitudinal ALP results from 1,601 PBC patients on first line treatment with UDCA, and applied latent class mixed modelling (LCMM), to identify distinct phenotypic subgroups, each with distinct disease trajectories, and risks of end stage liver disease (ESLD). Results: We identified four well discriminated phenotypic subgroups within our PBC cohort, each with distinct disease trajectories.

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Victoria Mulcahy, Anais Rouanet, Alessio Gerussi, Adam Duckworth, Steve Flack, Marco Carbone, Brian Tom, George Mells. 2022-03-20. Latent class mixed modelling for phenotypic stratification of primary biliary cholangitis patients on first line treatment. https://arxiv.org/abs/2203.10508

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