A submicroscopic unbalanced subtelomeric translocation t(2p;10q) identified by fluorescence in situ hybridization: fetus with increased nuchal translucency and normal standard karyotype with later growth and developmental delay, rhombencephalosynapsis (RES)
J. Lespinasse , H. Testard , F. Nugues , M. Till , M.P. Cordier , M. Althuser , F. Amblard , S. Fert-Ferrer , C. Durand , F. Dalmon , C. Pourcel , P.S. Jouk
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引用次数: 16
Abstract
Reaching an accurate diagnosis in children with mental retardation associated or not with dysmorphic signs is important to make precise diagnosis of a syndrome and for genetic counseling. A female case with severe growth and development delay, dysmorphic features and feeding disorder is presented. Antenataly, the fetus was observed to have increased nuchal translucency and a slight hypoplastic cerebellum. A standard karyotype was normal. RES and a submicroscopic unbalanced subtelomeric translocation t(2p; 10q) were demonstrated after birth. We show that within the framework of a collaborative approach, a concerted research of submicroscopic subtelomeric rearrangements should be performed in case of mental retardation associated with facial dysmorphic features, and when other etiologies or non-genetic factors (iatrogenic, toxic, infectious, metabolic...) have been ruled out.