Serum FGF-23 and α-Klotho Levels in Prolactinoma and Non-Tumoral Hyperprolactinemia: An Exploratory Cross-Sectional Comparative Study
Abstract
Background/Objectives: This study aimed to evaluate serum fibroblast growth factor-23 (FGF-23) and α-Klotho levels in patients with prolactinoma and patients with non-tumoral hyperprolactinemia and to explore their discriminatory performance for prolactinoma. Methods: Seventy-three participants were included in this single-center, cross-sectional comparative study: non-tumoral hyperprolactinemia (n = 14), prolactinoma (n = 29), and healthy controls (n = 30). All patients with prolactinoma had received dopamine agonist therapy for at least six months. Serum FGF-23 and α-Klotho were measured by ELISA, and between-group comparisons, correlation analyses, linear regression analyses, and receiver operating characteristic (ROC) analyses were performed. Results: FGF-23 concentrations differed significantly among the groups (overall p p p = 0.075). α-Klotho concentrations were significantly higher in the prolactinoma group [2.908 (1.376-6.257) ng/mL] than in both the non-tumoral hyperprolactinemia group [2.244 (1.432-5.139) ng/mL] (adjusted p = 0.038) and healthy controls [2.204 (0.149-4.917) ng/mL] (adjusted p Conclusions: Dopamine agonist-treated prolactinoma was characterized by higher circulating FGF-23 concentrations than those in healthy controls and by higher α-Klotho concentrations than those in both healthy controls and patients with non-tumoral hyperprolactinemia. Exploratory ROC analyses suggested moderate discriminatory performance for the individual biomarkers and…
How strong is the evidence?
Evidence Hub reads this as a cross-sectional, done in people. Its evidence level is 4 of 5 (Low · observational). Observational designs can show an association but not prove cause. Reported size: 30 participants or records.
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