DETERMINING FETAL GENOMES FOR MULTIPLE FETUS PREGNANCIES
    1.
    发明公开
    DETERMINING FETAL GENOMES FOR MULTIPLE FETUS PREGNANCIES 审中-公开
    测定胎儿基因组具有多胎妊娠

    公开(公告)号:EP2971126A4

    公开(公告)日:2016-10-26

    申请号:EP14764129

    申请日:2014-03-17

    IPC分类号: C12Q1/68 G06F19/22

    摘要: Techniques are provided for determining inheritance of maternal and paternal haplotypes in preganncies with multiple fetuses. Maternal inheritance can be determined at loci where the mother is heterozygous and the paternally inherited alleles are known (e.g., the father is homozygous). Two types of loci may be used, where one type has the paternal allele appear on a first maternal haplotype, and another type has the paternal allele appear on a second maternal haplotype. Paternal inheritance can be determined from loci where the father is heterozygous and the maother is homozygous. Amounts of different alleles at each locus can be measured. A comparison of the amounts (e.g., using a fractional concentration of each allele and cutoffs) can be used to determine the haplotype inheritance. A haplotype can be linked to a condition of interest.

    SIZE-BASED ANALYSIS OF FETAL DNA FRACTION IN MATERNAL PLASMA
    3.
    发明公开
    SIZE-BASED ANALYSIS OF FETAL DNA FRACTION IN MATERNAL PLASMA 有权
    MUTTERPLASMA的GRÖSSENBASIERTEANALYZE VONFÖTALERDNA-FRAKTION

    公开(公告)号:EP2823062A4

    公开(公告)日:2015-10-07

    申请号:EP13757943

    申请日:2013-03-08

    IPC分类号: C12Q1/68

    摘要: A method of analyzing a biological sample of an organism, the biological sample including DNA originating from normal cells and potentially from cells associated with cancer, wherein at least some of the DNA is cell-free in the biological sample, the method comprising: for each size of a plurality of sizes: measuring an amount of a first set of DNA fragments from the biological sample corresponding to the size; calculating a first value of a first parameter based on the amounts of DNA fragments at multiple sizes, the first parameter providing a statistical measure of a size profile of DNA fragments in the biological sample; comparing the first value to a reference value; and determining a classification of a level of cancer in the organism based on the comparison.

    摘要翻译: 一种分析生物体的生物样品的方法,所述生物样品包括源自正常细胞并且潜在地来自与癌症相关的细胞的DNA,其中所述DNA中的至少一些在生物样品中是无细胞的,所述方法包括: 多个尺寸的尺寸:测量来自对应于尺寸的生物样品的第一组DNA片段的量; 基于多个尺寸的DNA片段的量计算第一参数的第一值,第一参数提供生物样品中DNA片段的大小分布的统计量度; 将第一个值与参考值进行比较; 并且基于比较来确定生物体中癌症水平的分类。

    METHYLATION PATTERN ANALYSIS OF TISSUES IN DNA MIXTURE

    公开(公告)号:EP3169813A4

    公开(公告)日:2018-01-03

    申请号:EP15821804

    申请日:2015-07-20

    IPC分类号: C12Q1/68

    摘要: The contributions of different tissues to a DNA mixture are determined using methylation levels at particular genomic sites. Tissue-specific methylation levels of M tissue types can be used to deconvolve mixture methylation levels measured in the DNA mixture, to determine fraction contributions of each of the M tissue types. Various types of genomic sites can be chosen to have particular properties across tissue types and across individuals, so as to provide increased accuracy in determining contributions of the various tissue types. The fractional contributions can be used to detect abnormal contributions of a particular tissue, indicating a disease state for the tissue. A differential in fractional contributions for different sizes of DNA fragments can also be used to identify a diseased state of a particular tissue. A sequence imbalance for a particular chromosomal region can be detected in a particular tissue, e.g., identifying a location of a tumor.

    NONINVASIVE PRENATAL GENOTYPING OF FETAL SEX CHROMOSOMES
    9.
    发明公开
    NONINVASIVE PRENATAL GENOTYPING OF FETAL SEX CHROMOSOMES 审中-公开
    无创产前基因分型胎儿性别染色体

    公开(公告)号:EP2661507A4

    公开(公告)日:2015-12-23

    申请号:EP12732095

    申请日:2012-01-05

    IPC分类号: G06F19/00

    摘要: Methods, apparatuses, and system are provided for analyzing a maternal sample to determine whether a male fetus of a pregnant female has inherited an X-linked mutation from the mother. A percentage of fetal DNA in the sample is obtained, and cutoff values for the two possibilities (fetus inherits mutant or normal allele) are determined. A proportion of mutant alleles relative to a normal allele on the X-chromosome can then be compared to the cutoff values to make a classification of which allele is inherited. Alternatively, a number of alleles from a target region on the X-chromosome can be compared to a number of alleles from a reference region on the X-chromosome to identify a deletion or amplification. The fetal DNA percentage can be computed by counting reactions with a fetal-specific allele, and correcting the number to account for a statistical distribution among the reactions.