Trial reportThe Journal of clinical endocrinology and metabolism2026
Levothyroxine treatment response of cardiometabolic biomarkers in older adults with subclinical hypothyroidism.
Trial report in The Journal of clinical endocrinology and metabolism, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
1 citing paper in PubMed.
- Levothyroxine treatment response of cardiometabolic biomarkers in older adults with subclinical hypothyroidism.The Journal of clinical endocrinology and metabolism · 2026Trial
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Authors and funding
16 authors.
Funding
Abstract
contextRandomized controlled trials (RCTs) found no cardioprotective effects of levothyroxine therapy in older adults with subclinical hypothyroidism.
objectiveThe aim of this study was to assess levothyroxine effects on cardiometabolic biomarkers, which may serve as more sensitive treatment indicators.
designPost-hoc analysis using (baseline and 12-month) data from two double-blind RCTs in older adults (≥65 years) with subclinical hypothyroidism. MAIN OUTCOME MEASURE(S): Cardiometabolic biomarkers included seven clinically relevant lipid measures (apolipoprotein B (ApoB), total cholesterol (Total-C), non-high-density lipoprotein cholesterol (non-HDL-C), remnant cholesterol (RC), low-density lipoprotein cholesterol (LDL-C), HDL-C, and triglycerides (TG)) and 167 standardized metabolomic measures from nuclear magnetic resonance. Analyses were additionally stratified by baseline TSH levels.
resultsAmong 286 included participants (48% women; median age 75 [70, 82] years; median baseline TSH 6.44 [5.36, 7.81] mIU/L), 142 were randomized to levothyroxine. Overall, levothyroxine showed no effects on ApoB (-0.03 [95% CI: -0.07, 0.00] g/L), Total-C (-0.17 [-0.34, 0.00] mmol/L), non-HDL-C (-0.15 [-0.31, 0.00] mmol/L), RC (-0.09 [-0.16, -0.01] mmol/L), LDL-C (-0.07 [-0.15, 0.02] mmol/L), and TG (-0.07 [-0.15, 0.01] mmol/L). In participants with baseline TSH ≥10 mIU/L (n = 27), potentially beneficial changes (P < .05, but not significant after multiple-testing correction) were observed for all clinically relevant lipids except HDL-C, as well as for ApoB-containing lipoproteins, VLDL size, and fatty acids.
conclusionIn older adults with subclinical hypothyroidism, levothyroxine treatment showed no effects on cardiometabolic biomarkers, although potentially favorable changes in lipids and lipoproteins were observed for individuals with baseline TSH ≥10 mIU/L.
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