Purpose Wolf–Hirschhorn syndrome (WHS) is a contiguous gene syndrome due to terminal chromosome 4p deletions. We explored prenatal diagnosis of WHS by ultrasound as well as karyotype and single nucleotide polymorphism array (SNP array) to characterize the structural variants of WHS prenatally. Methods Ten prenatal cases of WHS were evaluated for the indication of the invasive testing, the ultrasound features, and cytogenetic and microarray results. Results Eight cases were diagnosed by karyotyping and SNP array, while two cases were detected only by SNP array. Com- bining our cases with 37 prenatal cases from the literature, the most common sonographic features were IUGR (97.7%) and typical facial appearance (82.9%). Other less common phenotypes included renal hypoplasia (36.2%), cardiac malformation (29.8%), cleft lip and palate (25.5%), cerebral abnormalities (25.5%), skeletal anomalies (21.3%), and increased nuchal translucency/nuchal fold thickness (NT/NF) (19%). Conclusions The most common intrauterine phenotypes of WHS were severe IUGR and typical facial appearance with other less consistent ultrasound findings. Noninvasive prenatal testing (NIPT) is one very promising screening tool for WHS. SNP array can improve diagnostic precision for detecting WHS, especially for the cryptic aberrations that cannot be identified by the traditional karyotyping. Ectopic kidney may be a previously
Archives of Gynecology and Obstetrics – Springer Journals
Published: May 28, 2018
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