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    • 5. 发明申请
    • A STRATEGY FOR DETECTING LOW ABUNDANCE MUTATIONS
    • 检测低渗透突变的策略
    • WO2008005559A2
    • 2008-01-10
    • PCT/US2007/015631
    • 2007-07-09
    • JOHNS HOPKINS UNIVERSITYGOGGINS, Michael
    • GOGGINS, Michael
    • C12Q1/68
    • C12Q1/6827C12Q2537/113C12Q2531/113
    • The present invention relates, e.g., to a method for screening for mutations in a DNA sample, comprising (a) diluting and distributing the sample to obtain a plurality of aliquots which, on the average, contain between about 2-10 genome equivalents of the DNA; (b) PCR amplifying the DNA in a sufficient number of aliquots, with at least one set of PCR primers, so as to generate amplicons such that, if mutations are present at a frequency of about 1-10% in a given gene in the sample, the probability of there being a mutation in that gene in at least one of the amplicons is at least about 95%; and (c) screening the amplicons for the presence of mutations, using a method that can detect unspecified mutations at unspecified sites within an amplicon (e.g., temperature gradient capillary electrophoresis (TGCE) or cycle sequencing of the DNA).
    • 本发明涉及例如筛选DNA样品中的突变的方法,其包括(a)稀释和分布样品以获得多个等分试样,其平均含有约2-10个基因组当量的 脱氧核糖核酸; (b)使用至少一组PCR引物以足够数量的等分试样PCR扩增DNA,以便产生扩增子,使得如果在给定基因中以约1-10%的频率存在突变,则 样品中,至少一个扩增子中该基因中存在突变的概率为至少约95%; 使用可以在扩增子内的未指定位点(例如温度梯度毛细管电泳(TGCE)或DNA的循环测序)中检测未指定突变的方法,筛选扩增子的突变存在。
    • 9. 发明申请
    • A STRATEGY FOR DETECTING LOW ABUNDANCE MUTATIONS
    • 检测低渗透突变的策略
    • WO2008005559A3
    • 2009-02-19
    • PCT/US2007015631
    • 2007-07-09
    • UNIV JOHNS HOPKINSGOGGINS MICHAEL
    • GOGGINS MICHAEL
    • C12P19/34
    • C12Q1/6827C12Q2537/113C12Q2531/113
    • The present invention relates, e.g., to a method for screening for mutations in a DNA sample, comprising (a) diluting and distributing the sample to obtain a plurality of aliquots which, on the average, contain between about 2-10 genome equivalents of the DNA; (b) PCR amplifying the DNA in a sufficient number of aliquots, with at least one set of PCR primers, so as to generate amplicons such that, if mutations are present at a frequency of about 1-10% in a given gene in the sample, the probability of there being a mutation in that gene in at least one of the amplicons is at least about 95%; and (c) screening the amplicons for the presence of mutations, using a method that can detect unspecified mutations at unspecified sites within an amplicon (e.g., temperature gradient capillary electrophoresis (TGCE) or cycle sequencing of the DNA).
    • 本发明涉及例如筛选DNA样品中的突变的方法,其包括(a)稀释和分布样品以获得多个等分试样,其平均含有约2-10个基因组当量的 脱氧核糖核酸; (b)使用至少一组PCR引物以足够数量的等分试样PCR扩增DNA,以便产生扩增子,使得如果在给定基因中以约1-10%的频率存在突变, 样品中,至少一个扩增子中该基因中存在突变的概率为至少约95%; 使用可以在扩增子内的未指定位点(例如温度梯度毛细管电泳(TGCE)或DNA的循环测序)中检测未指定突变的方法,筛选扩增子的突变存在。