7135 Changes in 11-oxygenated androgens in healthy prepubertal children from ages 4, 6, to 8 years: a prospective cohort study

Abstract Disclosure: Y. Lee: None. K. Lee: None. J. Kim: None. Y. Lim: None. J.I. Kim: None. B. Kim: None. Y. Hong: None. J. Song: None. C. Shin: None. Y. Lee: None. Background: 11-oxygenated androgens (11-oxyandrogens) have been recognized for their important role in adrenarche or androgen excess conditions. However, the trajectory during childhood remains understudied. Herein, we examined the longitudinal changes in 11-oxyandrogens among healthy prepubertal children. Methods: In an ongoing prospective cohort study, 172 prepubertal children with available blood samples at the ages of 4, 6, and 8 years were included. Serum concentrations of 14 adrenal androgens and precursors, including dehydroepiandrosterone (DHEA), DHEA-sulfate (DHEAS), androstenedione (A4), testosterone (T), 11β-hydroxyandrostenedione (11OHA4), 11-ketoandrostenedione (11KA4), 11β-hydroxytestosterone (11OHT), and 11-ketotestosterone (11KT) were assessed using liquid chromatography-tandem mass spectrometry. Repeated measures ANOVA was used to analyze the changes in adrenal androgens across age groups. Linear mixed model analysis was used to evaluate factors associated with adrenal hormone levels during 4 to 8 years of age. Results: Among 172 prepubertal children (107 boys, 65 girls), 11OHA4 was the predominant 11-oxyandrogen, exceeding concentrations of DHEA or A4. Serum 11KT level was higher than testosterone level from 6 years of age. Across age 4, 6, and 8 years, 11-oxyandrogens showed an increasing trend. Trajectories of 11OHA4, 11KA4, and 11KT significantly differed by sex (p for interaction 0.05). Serum levels of 11OHA4 and 11KT consistently increased from 4, 6, to 8 years in both sexes, while 11OHT increased during 6-8 years (p 0.05 for all). Serum 11KA4 levels increased during 4-6 years in boys and 6-8 years in girls (p 0.05 for all). Girls showed higher levels of 11OHA4, 11KA4 at 4 years, 11OHT at 6 years, and 11KT at 4 and 6 years. Regarding classic adrenal androgens, DHEA, DHEAS, and A4 also exhibited increases in different patterns between sexes (p for interaction 0.05) during 4-8 years. Girls had higher serum DHEA and A4 levels at 4 and 6 years, and DHEAS levels at 4 years (p 0.05 for all). In boys, lower gestational age, lower birth weight z-score, and higher body mass index (BMI) z-score were correlated with elevated levels of DHEA and DHEA-S. Additionally, a higher BMI z-score was associated with increased levels of A4, 11OHT, and 11KT (p 0.05 for all, multivariable models). In girls, a higher BMI z-score was linked to elevated DHEA levels, while a higher birth weight z-score was associated with increased A4 levels (p 0.05 for all, multivariable models). Conclusion: In prepubertal children, 11-oxyandrogens showed increasing patterns similar to classic androgens, with sex-differences. Some 11-oxyandrogens were more predominant than classic androgens. This study suggests the importance of 11-oxyandrogens as biomarkers for zona reticularis development and adrenarche in prepubertal children. Presentation: 6/3/2024