Serum T50 is not independently associated with coronary artery calcification in early chronic kidney disease

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ID: 331555
2026
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Abstract
Abstract Background The serum T50 test quantifies calcification propensity, with lower values indicating a higher propensity for calcification. Lower T50 values have been associated with adverse cardiovascular outcomes, particularly in advanced chronic kidney disease. Whether serum T50 is associated with coronary artery calcification (CAC) in individuals with mildly to moderately reduced kidney function remains unclear. We examined this association in a population-based cross-sectional study. Methods We analyzed 1 945 participants from the population-based Lifelines ImaLife cohort with mildly to moderately reduced kidney function (eGFR 36.2–73.1 mL/min/1.73 m²). Serum T50 was measured using a standardized nephelometric assay. CAC was assessed by electrocardiographically-triggered non-contrast computed tomography and categorized into 0, 1–99, 100–399, and ≥ 400 Agatston units. Associations between continuous T50 (per 10-minute increase) and CAC categories were examined using multinomial logistic regression. Results Of the 1 945 participants, 56.5% had detectable CAC (CAC 1–99: 30.9%, 100–399: 14.4%, ≥400: 11.2%). In crude analyses, higher T50 values were associated with the presence of CAC (OR 1.02, 95% CI 1.01–1.03) and with CAC categories 1–99, 100–399, and ≥ 400 versus 0 (ORs 1.01, 1.02, and 1.03, respectively). These associations were no longer significant after adjustment for age, body mass index (BMI), and sex. Subgroup analyses did not identify risk groups in which T50 was significantly associated with the presence or severity of CAC. Conclusion In this cohort with mildly to moderately reduced kidney function, T50 was not independently associated with prevalent CAC after multivariable adjustment.
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Authors Guido de La Roij, Kevin Ocran, Marc G. Vervloet, Andreas Pasch, Rozemarijn Vliegenthart, Gerjan J Navis, Martin H. de Borst, Joost G.J. Hoenderop, Jeroen H. F. de Baaij
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Journal clinical kidney journal
Year 2026
DOI
10.1093/ckj/sfag339
URL
https://doi.org/10.1093/ckj/sfag339
Keywords Keywords not found

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