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  • Title: Pubertal development in ICSI children.
    Author: Belva F, Roelants M, Painter R, Bonduelle M, Devroey P, De Schepper J.
    Journal: Hum Reprod; 2012 Apr; 27(4):1156-61. PubMed ID: 22328555.
    Abstract:
    BACKGROUND: To date, information on the pubertal development of adolescents born after ICSI is scarce, since the very first cohort is only now reaching young adulthood. In this study, pubertal development at the age of 14 was characterized in a longitudinally followed cohort of ICSI-conceived teenagers and compared with that of a spontaneously conceived (SC) control group. METHODS: Pubertal development was assessed by Tanner staging (breast, genital and pubic hair development) and age at menarche in 217 singleton ICSI-conceived children (116 boys, 101 girls) and 223 SC peers (115 boys, 108 girls). ICSI teenagers were part of a previously published cohort followed since birth; controls were a cross-sectional sample recruited from schools. Differences in pubertal development between ICSI and SC children were analyzed with logistic regression of current status data. RESULTS: Mean age at menarche was similar in ICSI and SC girls (13.1 ± 1.2 versus 13.1 ± 1.4 years; P = 0.8). Breast developmental at the age of 14 years was less advanced in ICSI females compared with SC females, even after adjustment for demographic (age, BMI), genetic (maternal age at menarche), social (maternal educational level) and early life factors (birthweight, gestational age and maternal parity) [odds ratio (OR) 0.5; 95% confidence interval (CI) 0.3-0.8]. After adjustment, genital development in the 14-year-old boys was comparable in the ICSI and SC groups (OR 1.1; 95% CI 0.7-1.8), pubic hair development was comparable in the ICSI and SC groups, for both males (OR 0.9; 95% CI 0.7-1.6) and females (OR 0.7; 95% CI 0.4-1.3). CONCLUSIONS: We found that pubertal development, characterized by menarche, genital development in males and pubic hair development in males and females, was comparable in the ICSI and SC groups. Breast developmental was less advanced in ICSI females compared with SC peers, even after adjustment for known potential confounders. In order to confirm that progression through subsequent stages of pubertal development occurs on a timely basis in ICSI teenagers, long-term follow-up studies up to adulthood are required.
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