Birth weight in different etiologies of disorders of sex development

Poyrazoglu, S. et al. (2017) Birth weight in different etiologies of disorders of sex development. Journal of Clinical Endocrinology and Metabolism, 102(3), pp. 1044-1050. (doi: 10.1210/jc.2016-3460) (PMID:28359094)

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Context: It is well established that boys are heavier than girls at birth. Although the cause of birth weight (BW) difference is unknown, it has been proposed that it could be generated from prenatal androgen action. Objective: The aim of the current study was to determine the BW of children with disorders of sex development (DSD) of different etiologies and to evaluate the effects of androgen action on BW. Methods: Data regarding diagnosis, BW, gestational age, karyotype, and concomitant conditions were collected from the International Disorders of Sex Development (I-DSD) Registry (www.i-dsd). BW standard deviation score was calculated according to gestational age. Cases were evaluated according to disorder classification in I-DSD (i.e., disorders of gonadal development, androgen excess, androgen synthesis, androgen action, nonspecific disorder of undermasculinization groups, and Leydig cell defect). Results: A total of 533 cases were available; 400 (75%) cases were 46,XY, and 133 (25%) cases were 46,XX. Eighty cases (15%) were born small for gestational age (SGA). Frequency of SGA was higher in the 46,XY group (17.8%) than in the 46,XX (6.7%) group (P = 0.001). Mean BW standard deviation scores of cases with androgen excess and androgen deficiency [in disorders of gonadal development, androgen synthesis, and Leydig cell defect groups and androgen receptor gene (AR) mutation-positive cases in disorders of androgen action groups] were similar to normal children with the same karyotype. SGA birth frequency was higher in the AR mutation–negative cases in disorders of androgen action group and in the nonspecific disorders of the undermasculinization group. Conclusions: BW dimorphism is unlikely to be explained by fetal androgen action per se. 46,XY DSDs due to nonspecific disorders of undermasculinization are more frequently associated with fetal growth restriction, SGA, and concomitant conditions.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Rodie, Dr Martina and Bryce, Dr Jillian and Ahmed, Professor Syed Faisal and Jiang, Mr Jipu
Authors: Poyrazoglu, S., Darendeliler, F., Ahmed, S. F., Hughes, I., Bryce, J., Jiang, J., Rodie, M., Hiort, O., Hannema, S. E., Bertelloni, S., Lisa, L., Guran, T., Cools, M., Desloovere, A., Claahsen-van der Grinten, H. L., Nordenstrom, A., Holterhus, P.-M., Kohler, B., Niedziela, M., and Krone, N.
College/School:College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing
Journal Name:Journal of Clinical Endocrinology and Metabolism
Publisher:Oxford University Press
ISSN (Online):1945-7197
Published Online:06 January 2017

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