RT Journal Article T1 Premature menopause and autoimmune primary ovarian insufficiency in two international multi-center cohorts. A1 Vogt, Elinor Chelsom A1 Real, Francisco Gómez A1 Husebye, Eystein Sverre A1 Björnsdottir, Sigridur A1 Benediktsdottir, Bryndis A1 Bertelsen, Randi Jacobsen A1 Demoly, Pascal A1 Franklin, Karl Anders A1 de Aja Gallastegui, Leire Sainz A1 González, Francisco Javier Callejas A1 Heinrich, Joachim A1 Holm, Mathias A1 Jogi, Nils Oscar A1 Leynaert, Benedicte A1 Lindberg, Eva A1 Malinovschi, Andrei A1 Martínez-Moratalla, Jesús A1 Mayoral, Raúl Godoy A1 Oudin, Anna A1 Pereira-Vega, Antonio A1 Semjen, Chantal Raherison A1 Schlünssen, Vivi A1 Triebner, Kai A1 Øksnes, Marianne K1 autoimmune K1 premature menopause K1 premature ovarian failure K1 premature ovarian insufficiency K1 primary ovarian insufficiency AB To investigate markers of premature menopause ( Postmenopausal women were categorized according to age at menopause and self-reported reason for menopause in a cross-sectional analysis of 6870 women. Variables associated with the timing of menopause and hormone measurements of 17β-estradiol and follicle-stimulating hormone were explored using multivariable logistic regression analysis. Specific immunoprecipitating assays of steroidogenic autoantibodies against 21-hydroxylase (21-OH), side-chain cleavage enzyme (anti-SCC) and 17alpha-hydroxylase (17 OH), as well as NACHT leucine-rich-repeat protein 5 were used to identify women with likely autoimmune POI. Premature menopause was identified in 2.8% of women, and these women had higher frequencies of nulliparity (37.4% vs 19.7%), obesity (28.7% vs 21.4%), osteoporosis (17.1% vs 11.6%), hormone replacement therapy (59.1% vs 36.9%) and never smokers (60.1% vs 50.9%) (P Idiopathic POI affects 1.1% of all women and almost half of the women with premature menopause. Autoimmunity explains 4.5% of these cases judged by positive steroidogenic autoantibodies. SN 2049-3614 YR 2022 FD 2022-05-25 LK http://hdl.handle.net/10668/20440 UL http://hdl.handle.net/10668/20440 LA en DS RISalud RD Apr 8, 2025