Anti-Müllerian Hormone Serum Levels as Biomarker of Ovarian Reserve in Adult Women with Juvenile Idiopathic Arthritis Treated with csDMARDs and/or bDMARDs: A Pilot Study

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Abstract
Background/Objectives: Juvenile idiopathic arthritis (JIA) is a chronic childhood disease that often persists into the reproductive years. JIA may impact long-term fertility due to the prolonged exposure to immunosuppressive therapies. Methods: A total of 35 adult JIA female patients of childbearing age and 20 age-matched healthy controls were studied to test their anti-Müllerian hormone (AMH) serum levels as a biomarker of ovarian reserve. Demographic characteristics, disease duration, previous and current treatments, disease activity (DAS44), and a health assessment questionnaire (HAQ) were recorded. Results: JIA patients had a mean age of 22.3 ± 2.9 years, a disease duration of 12.3 ± 6.1 years, and a DAS44 of 1.24 ± 0.61. No differences were found in AMH serum levels between JIA and controls (5.78 ± 2.37 ng/mL vs. 6.60 ± 2.68 ng/mL, respectively; p = 0.17). Among the patients, 22 (62.9%) were receiving a stable dose of methotrexate (MTX) and 19 (54.3%) a dose of TNFα inhibitors. No difference in AMH serum levels was observed between JIA patients who were or were not exposed to MTX (p = 0.29) or to TNFα inhibitors (p = 0.50). Conclusions: Ovarian reserve as assessed by AMH serum levels appears to be comparable between those with JIA and age-matched controls and does not appear to be influenced by disease characteristics or prior/concomitant exposure to immunosuppressive drugs.

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