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    Methods for non-invasive prenatal ploidy calling
    64.
    发明授权
    Methods for non-invasive prenatal ploidy calling 有权

    公开(公告)号：US10174369B2

    公开(公告)日：2019-01-08

    申请号：US15917383

    申请日：2018-03-09

    Applicant: Natera, Inc.

    Inventor： Matthew Rabinowitz ,  George Gemelos ,  Milena Banjevic ,  Allison Ryan ,  Zachary Demko

    IPC: G01N33/48 ,  C12Q1/6869 ,  C12Q1/6827 ,  G06F19/18 ,  C12Q1/6883 ,  C12Q1/6862 ,  C12Q1/6806 ,  C12Q1/6874 ,  G06F19/24

    Abstract: The present disclosure provides methods for determining the ploidy status of a chromosome in a gestating fetus from genotypic data measured from a mixed sample of DNA comprising DNA from both the mother of the fetus and from the fetus, and optionally from genotypic data from the mother and father. The ploidy state is determined by using a joint distribution model to create a plurality of expected allele distributions for different possible fetal ploidy states given the parental genotypic data, and comparing the expected allelic distributions to the pattern of measured allelic distributions measured in the mixed sample, and choosing the ploidy state whose expected allelic distribution pattern most closely matches the observed allelic distribution pattern. The mixed sample of DNA may be preferentially enriched at a plurality of polymorphic loci in a way that minimizes the allelic bias, for example using massively multiplexed targeted PCR.

    Methods for non-invasive prenatal ploidy calling
    68.
    发明授权
    Methods for non-invasive prenatal ploidy calling 有权
    非侵入性产前倍性调用方法

    公开(公告)号：US08949036B2

    公开(公告)日：2015-02-03

    申请号：US14100928

    申请日：2013-12-09

    Applicant: Natera, Inc.

    Inventor： Matthew Rabinowitz ,  George Gemelos ,  Milena Banjevic ,  Allison Ryan ,  Zachary Demko ,  Matthew Hill ,  Bernhard Zimmermann ,  Johan Baner

    IPC: G01N33/48 ,  G01N31/00 ,  G06G7/48 ,  G06G7/58 ,  C12Q1/68 ,  G06F19/12 ,  G06F19/22

    CPC classification number: C12Q1/6883 ,  C12Q1/6827 ,  C12Q1/6869 ,  C12Q2537/161 ,  C12Q2537/165 ,  C12Q2600/112 ,  C12Q2600/156 ,  C12Q2600/16 ,  C12Q2600/172 ,  G06F19/00 ,  G06F19/12 ,  G06F19/18 ,  G06F19/22 ,  G06F19/34 ,  G16H50/30

    Abstract: The present disclosure provides methods for determining the ploidy status of a chromosome in a gestating fetus from genotypic data measured from a sample of DNA from the mother of the fetus and from the fetus, and from genotypic data from the mother and optionally also from the father. The ploidy state is determined by using a joint distribution model to create a set of expected allele distributions for different possible fetal ploidy states given the parental genotypic data, and comparing the expected allelic distributions to the pattern of measured allelic distributions measured in the mixed sample, and choosing the ploidy state whose expected allelic distribution pattern most closely matches the observed allelic distribution pattern. In an embodiment, the mixed sample of DNA may be preferentially enriched at a plurality of polymorphic loci in a way that minimizes the allelic bias.

    Abstract translation: 本公开提供了用于从胎儿母体和胎儿的DNA样品测量的基因型数据以及来自母亲的基因型数据以及任选地还可以从父亲的基因型数据确定胎儿胎儿中染色体的倍性状态的方法 。 通过使用联合分布模型来确定给定父母基因型数据的不同可能胎儿倍性状态的一组预期等位基因分布，并将预期等位基因分布与在混合样品中测量的测量等位基因分布的模式进行比较来确定倍性状态， 并选择其预期等位基因分布模式与观察到的等位基因分布模式最接近的倍性状态。 在一个实施方案中，DNA的混合样品可以以使等位基因偏倚最小化的方式优先富集在多个多态位点。

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