The interplay between IL-18 rs1946518 polymorphism, TSH dysregulation, and vitamin D3 deficiency in Hashimoto's thyroiditis
Hashimoto's thyroiditis (HT) is an autoimmune thyroid disorder shaped by both genetic predisposition and environmental influences. One gene of growing interest is interleukin-18 (IL-18), particularly its rs1946518 (T/G) promoter polymorphism, which may affect inflammatory responses. Meanwhile, vitamin D3 has emerged as a key immunomodulatory factor, yet its interaction with genetic markers in HT remains unclear