Chinese Journal of Pharmacovigilance ›› 2024, Vol. 21 ›› Issue (12): 1425-1431.
DOI: 10.19803/j.1672-8629.20240036

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Risk Signal Mining of Adverse Events Related to Levothyroxine Sodium Tablets Based on FAERS

CHEN Chongze1, ZHOU Tianyu2, SUN Siman2, GUO Shushu3, JIN Hongtao4,5,*   

  1. 1Department of Pharmacy, Fuzhou Changle District People's Hospital, Fuzhou Fujian 350200, China;
    2College of Pharmacy, Shaanxi University of Traditional Chinese Medicine, Xianyang 712046,China;
    3School of Life Sciences and Biopharmaceutical Science, Shenyang Pharmaceutical University, Liaoning Shenyang 110016, China;
    4New Drug Safety Evaluation Center, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China;
    5Beijing Union-Genius Pharmaceutical Technology Development Co., Ltd., Beijing 100176, China
  • Received:2024-01-11 Online:2024-12-15 Published:2024-12-16

Abstract: Objective To analyze the adverse drug events (ADE) caused by levothyroxine sodium tablets to provide a reference for rational and safe clinical use. Methods The U. S. Food and Drug Administration (FDA) Adverse Event Reporting System (FAERS) was searched to retrieve the ADE data on the primarily suspected drug collected from the first quarter of 2015 to the second quarter of 2023. The reporting odds ratio (ROR)、proportional reporting ratio (PRR), Bayesian confidence propagation neural network (BCNPP) and multi-item gamma poisson shrinker (MGPS) methods were used to screen for effective signals of ADEs of drugs. Results A total of 271 356 ADEs related to levothyroxine tablets as the primary suspect were reported. Most of the people involved were women (198 219, 73.05%) and the patients ranged from 18 to 85 in age (62.46%). A total of 5 991 adverse events of levothyroxine sodium tablets were mined, 3 371 signals were obtained after excluding non-drug adverse event signals, and 20 organ systems were found to be involved. Fatigue (22 511 items), nausea (17 591 items), diarrhea (16 400 items), headache (15 043 items) and dyspnea (12 866 items)were the top five ADEs reported.Analysis showed that neonatal gangrene (ROR=267.57, IC025=4.66), bronchiolithiasis (ROR=187.30, IC025=267.57), homophonic association (ROR=107.03, IC025=267.57), increased trans-triiodothyronine (ROR=89.19, IC025=4.42), and decreased free thyroxine indexes (ROR=80.27, IC025=4.38)were the top five ADEs in terms of intensities of signals. Based on secondary screening, the top three PTs related to the neonatal risk signal intensity were neonatal gangrene, neonatal intestinal dilation, and neonatal thyrotoxicosis. The top three PTs regarding the stone risk signal intensity were bronchial stones, cerebral stones, and staghorn stones. A total of 146 signals that were not recorded in the instructions were found, which were mostly manifested in various examinations, gastrointestinal system diseases, infections and invasive diseases, nervous system diseases, benign and malignant tumors of unknown nature. Conclusion Levothyroxine sodium tablets can potentially cause such ADRs as calculuses, infections and secondary tumors in patients with hypothyroidism. Clinical multidisciplinary follow-up is recommended for patients taking levothyroxine sodium tablets.

Key words: Levothyroxine Sodium Tablets, FAERS, Reporting Odds Ratio (ROR), Proportional Reporting ratio (PRR), Bayesian Confidence Interval Neural Propagation Network Method (BCPNN), Multi-item Gamma Poisson Shrinker, (MGPS), Spontaneous Reporting, Uncommensurate Analysis, Data Mining

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