MOLECULAR ANALYSIS OF RING Y CHROMOSOME IN A 10-YEAR-OLD BOY WITH MIXED GONADAL DYSGENESIS AND GROWTH HORMONE DEFICIENCY
Milenkovic T1,*, Guc-Scekic M2, Zdravkovic D1,3, Topic V4, Liehr T5, Joksic G6, Radivojevic D2, Lakic N2
*Corresponding Author: Tatjana Milenkovic, Department of Endocrinology, Institute for Mother and Child Healthcare of Serbia “Dr. Vukan Cupic,” Radoja Dakica 6-8, 11 070 Belgrade, Serbia; Tel.: +381-11-3018-109; Fax: +381-11-3108-257; E-mail: tanjamil@eunet.rs
page: 71
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Abstract

Ring Y chromosome is a very rare chromosomal aberration. The published mixed gonadal dysgenesis (MGD) patients with a ring Y chromosome are short in stature, but are not growth hormone (GH) deficient. We present the molecular cytogenetic and molecular characterization of ring Y chromosome mosaicism in a 10-year-old boy with MGD whose short stature could be explained by the high percentage of cells monosomic for the X-chromosome, but also by the presence of severe GH deficiency. The ring Y chromosome in our patient is a de novo structural aberration. The father’s karyotype was normal.



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