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    • 4. 发明申请
    • Prenatal diagnosis using cell-free fetal DNA in amniotic fluid
    • 产前诊断在羊水中使用无细胞胎儿DNA
    • US20070111233A1
    • 2007-05-17
    • US11514096
    • 2006-08-31
    • Diana BianchiKirby JohnsonOlav Lapaire
    • Diana BianchiKirby JohnsonOlav Lapaire
    • C12Q1/68C07H21/04C12N1/08
    • C12N15/1006
    • The present invention relates to improved methods of prenatal diagnosis, screening, monitoring and/or testing. The inventive methods include the analysis by array-based hybridization of cell-free fetal DNA isolated from amniotic fluid. In addition to allowing the prenatal diagnosis of a variety of diseases and conditions, and the assessment of fetal characteristics such as fetal sex and chromosomal abnormalities, the new inventive methods provide substantially more information about the fetal genome in less time than it takes to perform a conventional metaphase karyotype analysis. In particular, the enhanced molecular karyotype methods provided by the present invention allow the detection of chromosomal aberrations that are not often detected prenatally such as microdeletions, microduplications and subtelomeric rearrangements. Also provided are improved methods of extraction of fetal DNA from amniotic fluid.
    • 本发明涉及产前诊断,筛选,监测和/或测试的改进方法。 本发明的方法包括通过从羊水分离的无细胞胎儿DNA的阵列杂交进行分析。 除了允许产前诊断各种疾病和状况,以及胎儿特性如胎儿性别和染色体异常的评估之外,新的发明方法提供了更多关于胎儿基因组的信息,其时间要比执行胎儿 常规中期核型分析。 特别地,由本发明提供的增强的分子核型方法允许检测不常检测到的染色体异常,例如微缺失,微复制和亚端粒重排。 还提供了从羊水中提取胎儿DNA的改进方法。