Purpose: Exome sequencing (ES) is increasingly used for the diagnosis of rare genetic disease. However, some pathogenic sequence variants within the exome go undetected due to the technical difficulty of identifying them. Mobile element insertions (MEIs) are a known cause of genetic disease in humans but have been historically difficult to detect via ES and similar targeted sequencing methods.
View Article and Find Full Text PDFMyotonic dystrophy, caused by DM1 CTG/CAG repeat expansions, shows varying instability levels between tissues and across ages within patients. We determined DNA replication profiles at the DM1 locus in patient fibroblasts and tissues from DM1 transgenic mice of various ages showing different instability. In patient cells, the repeat is flanked by two replication origins demarcated by CTCF sites, with replication diminished at the expansion.
View Article and Find Full Text PDFObjective: To assess women's knowledge of and views on the evaluation and reporting of ultrasound soft markers.
Methods: A prospective survey of 263 women undergoing 18 to 20 week anatomy ultrasound examination at Mount Sinai Hospital, a level 3 perinatal referral centre for a multi-ethnic population of approximately 2.5 million.
The combination of pulmonary agenesis/dysgenesis/hypoplasia, microphthalmia/anophthalmia, and a diaphragmatic defect (agenesis or eventration) is a rare syndrome presumed to have an autosomal recessive mode of inheritance based on a report of affected siblings born to unaffected parents [Seller et al., 1996]. The condition is known as Spear syndrome and Matthew-Wood syndrome, although genetic heterogeneity cannot be ruled out.
View Article and Find Full Text PDFObjective: The purpose of this study was to determine the ability of uterine artery Doppler and placental ultrasound to identify adverse clinical outcomes attributable to severe placental dysfunction in women with second-trimester unexplained elevated maternal serum screening of alpha-fetoprotein and human chorionic gonadotropin.
Study Design: Fifty singleton pregnancies with elevated alpha-fetoprotein (3.5 multiples of median [range 2.