Method for determining allele frequencies
First Claim
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1. A method of determining the frequency of an allele in a population of nucleic acid molecules, said method comprising:
- pooling the nucleic acid molecules of said population to provide a pooled nucleic acid sample;
performing primer extension reactions in a reaction mixture comprising said pooled nucleic acid sample and a primer which binds at a predetermined site located in said nucleic acid molecules, wherein said site is substantially adjacent to a polymorphic position of interest in said allele, to provide primer extension products, and wherein the primer extension reaction is performed by sequentially adding non-chain terminating nucleotides to the reaction mixture and quantitatively determining the incorporation or non-incorporation of each nucleotide as each nucleotide is added by bioluminometrically detecting the release of pyrophosphate;
obtaining a pattern of nucleotide incorporation in said primer extension products at the positions that correspond to said polymorphic position of interest; and
determining the frequency of said allele from said pattern of nucleotide incorporation.
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Abstract
The present invention related to a method of determining the frequency of an allele in a population of nucleic acid molecules. The method comprises pooling the nucleic acid molecules of a population of nucleic acids, performing primer extension reactions using a primer which binds at a predetermined site located in nucleic acid molecules, and obtaining a pattern of nucleotide incorporation.
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16 Claims
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1. A method of determining the frequency of an allele in a population of nucleic acid molecules, said method comprising:
pooling the nucleic acid molecules of said population to provide a pooled nucleic acid sample;
performing primer extension reactions in a reaction mixture comprising said pooled nucleic acid sample and a primer which binds at a predetermined site located in said nucleic acid molecules, wherein said site is substantially adjacent to a polymorphic position of interest in said allele, to provide primer extension products, and wherein the primer extension reaction is performed by sequentially adding non-chain terminating nucleotides to the reaction mixture and quantitatively determining the incorporation or non-incorporation of each nucleotide as each nucleotide is added by bioluminometrically detecting the release of pyrophosphate;
obtaining a pattern of nucleotide incorporation in said primer extension products at the positions that correspond to said polymorphic position of interest; and
determining the frequency of said allele from said pattern of nucleotide incorporation.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of determining the amount of an allele in a sample of nucleic acid molecules, said method comprising:
performing primer extension reactions in a reaction mixture comprising said nucleic acid molecules, using a primer which binds at a predetermined site located in at least one said molecule wherein said site is substantially adjacent to a polymorphic position of interest in said allele, to provide primer extension products, and wherein the primer extension reaction is performed by sequentially adding non-chain terminating nucleotides to the reaction mixture and quantitatively determining the incorporation or non-incorporation of each nucleotide as each nucleotide is added by bioluminometrically detecting the release of pyrophosphate;
determining the type and number of nucleotides incorporated in said primer extension products at positions that correspond to the polymorphic position of interest, and determining the amount of occurrence of said allele in said sample by analyzing the type and number of nucleotides incorporated.- View Dependent Claims (14, 15, 16)
Specification