ArticleFrontiers in endocrinology2026
Serial fibrosis-4 variability and longitudinal patterns are associated with incident heart failure in type 2 diabetes: a 24-month landmark cohort study.
Article in Frontiers in endocrinology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: The prognostic relevance of serial Fibrosis-4 index (FIB-4) changes for incident heart failure (HF) in type 2 diabetes mellitus (T2DM) remains unclear. We examined whether within-person FIB-4 variability and longitudinal patterns were associated with HF after explicit adjustment for chronological age. Methods: Routinely collected clinical data from 2000 to 2025 were analyzed using a 24-month landmark design. FIB-4 measurements from months 0 to 18 defined the exposure, followed by a 6-month lag before HF follow-up. Variability was calculated as the within-person standard deviation of log Results: Among 8,221 patients, 1,811 developed HF during 50,640 person-years. Greater FIB-4 variability was associated with a higher HF hazard (adjusted hazard ratio [HR], 1.73; 95% confidence interval [CI], 1.43-2.09). Compared with the never-high pattern, persistent-high FIB-4 (HR, 1.73; 95% CI, 1.35-2.20) and worsening to high (HR, 1.28; 95% CI, 1.01-1.62) were associated with higher HF hazards, whereas improving from high was not (HR, 0.95; 95% CI, 0.70-1.28). Adding serial FIB-4 features resulted in a small, statistically uncertain improvement in temporal-validation discrimination (ΔC-index, 0.0069; 95% CI, -0.0043 to 0.0190). Discussion: Serial FIB-4 variability and persistent elevation were associated with incident HF independently of chronological age. These measures may characterize longitudinal multisystem cardiometabolic burden, but their incremental predictive value was limited. External validation is required before clinical application.
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