• Lambros Athanassiou, Ifigenia Kostoglou-Athanassiou, Georgia Kaiafa, Pavlos Tsakiridis, Nikolaos Koukosias, Spyridon Mitsoulis, Christos Savopoulos, and Panagiotis Athanassiou.
• Department of Rheumatology, Asclepeion Hospital, Voula, 16673 Athens, Greece.
• Medicina (Kaunas). 2023 Oct 29; 59 (11).

AbstractBackground and Objectives: Thyroid disease has been associated with autoimmune disorders. As systemic lupus erythematosus (SLE) is a systemic autoimmune disease with diverse manifestations spanning across all organ systems, the relationship of SLE with thyroid disorders needs investigation. In particular, the relationship of SLE with autoimmune thyroid disease has attracted the interest of the research community. The aim was to evaluate the relationship of SLE with autoimmune thyroid disease. Materials and Methods: A cohort of 45 consecutive patients with a mean age of 47.97 years (range 21-79 years) and 45 age- and sex-matched controls were prospectively studied over a period of 12 months for the presence of thyroid disease and the prevalence of antithyroid antibodies. Results: Four patients (8.9%) were found to suffer from primary hypothyroidism, five (11.11%) from subclinical hypothyroidism and one (2.22%) from hyperthyroidism, whereas one (2.22%) of the controls had primary hypothyroidism and one (2.22%) had hyperthyroidism. Five patients (11.11%) had a thyroid hormone profile that was compatible with the presence of euthyroid sick syndrome. Thyroid peroxidase (TPOab) and thyroglobulin (Tgab) antibodies were detected in 20/45 and 15/45 of the SLE population and in 7/45 and 5/45 of the controls, respectively (p < 0.05, chi-square test). Conclusions: In conclusion, the incidence of clinical thyroid disease is greater amongst SLE patients than in a control population, and in a significant number of these patients, antithyroid antibodies are detectable. Thus, a subset of lupus patients appears to be predisposed to the development of thyroid disease, and this should be considered when evaluating patients with SLE.

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