Method and reagents for testing for mutations in the BRCA1 gene
First Claim
1. A method for testing a sample for mutations in the BRCA1 gene comprising the steps of:
- (a) amplifying exons 1 and 21, or a portion of each exon, of the BRCA1 gene to produce amplified fragments, wherein the exons or portions thereof are amplified in a multiplex amplification reaction to produce multiplex amplification products for analysis;
(b) determining the sizes and amounts of amplified fragments in the multiplex amplification products and comparing the determined sizes or amounts to standard values for amplification of the same exons or portions thereof of wild-type BRCA1 gene, wherein a difference in fragment size or amount is indicative of the presence of a mutation in the BRCA1 gene; and
(c) if no mutation is detected in the BRCA1 gene as a result of the determination of the sizes and amounts of the amplification fragments, determining the sequence of one or more exons of the BRCA1 gene.
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Accused Products
Abstract
Samples are tested for mutations in the BRCA1 gene using a hierarchical approach. First, each sample is amplified in one or more multiplex PCR amplification reactions. Each multiplex PCR reaction produces a mixture of amplified fragments. The sizes and amounts of these fragments are evaluated and compared to standard values reflecting the sizes and amounts of fragments produced when the same multiplex amplification is performed on the wild-type BRCA1 gene. Differences between the observed fragment sizes and/or amounts and those for the wild-type gene are indicative of a mutation with the BRCA1 gene of the sample. Next, one or more of the exons of the BRCA1 gene are sequenced, preferably only for those samples where no mutation was detected by analysis of the multiplex PCR fragments. The sequencing procedure can be performed by amplification and sequencing of the multiplex amplification mixture.
23 Citations
27 Claims
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1. A method for testing a sample for mutations in the BRCA1 gene comprising the steps of:
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(a) amplifying exons 1 and 21, or a portion of each exon, of the BRCA1 gene to produce amplified fragments, wherein the exons or portions thereof are amplified in a multiplex amplification reaction to produce multiplex amplification products for analysis;
(b) determining the sizes and amounts of amplified fragments in the multiplex amplification products and comparing the determined sizes or amounts to standard values for amplification of the same exons or portions thereof of wild-type BRCA1 gene, wherein a difference in fragment size or amount is indicative of the presence of a mutation in the BRCA1 gene; and
(c) if no mutation is detected in the BRCA1 gene as a result of the determination of the sizes and amounts of the amplification fragments, determining the sequence of one or more exons of the BRCA1 gene. - View Dependent Claims (2)
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3. A method for testing a sample for mutations in the BRCA1 gene comprising the steps of:
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(a) amplifying exons 2, 5, 9 and 14, or a portion of each exon, of the BRCA1 gene to produce amplified fragments, wherein the exons or portions thereof are amplified using the primers identified by Sequence Nos. 3, 4, 9, 10, 17, 18, 53 and 54 in a multiplex amplification reaction to produce multiplex amplification products for analysis;
(b) determining the sizes and amounts of amplified fragments in the multiplex amplification products and comparing the determined sizes or amounts to standard values for amplification of the same exons or portions thereof of wild-type BRCA1 gene, wherein a difference in fragment size or amount is indicative of the presence of a mutation in the BRCA1 gene; and
(c) if no mutation is detected in the BRCA1 gene as a result of the determination of the sizes and amounts of the amplification fragments, determining the sequence of one or more exons of the BRCA1 gene.
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4. A method for testing a sample for mutations in the BRCA1 gene comprising the steps of:
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(a) amplifying exons 3, 7 and 15, or a portion of each exon, of the BRCA1 gene to produce amplified fragments, wherein the exons or portion thereof are amplified using the primers identified by Sequence Nos. 5, 6, 13, 14, 55 and 56 in a multiplex amplification reaction to produce multiplex amplification products for analysis;
(b) determining the sizes and amounts of amplified fragments in the multiplex amplification products and comparing the determined sizes or amounts to standard values for amplification of the same exons or portion thereof of wild-type BRCA1 gene, wherein a difference in fragment size or amount is indicative of the presence of a mutation in the BRCA1 gene; and
(c) if no mutation is detected in the BRCA1 gene as a result of the determination of the sizes and amounts of the amplification fragments, determining the sequence of one or more exons of the BRCA1 gene.
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5. A method for testing a sample for mutations in the BRCA1 gene comprising the steps of:
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(a) amplifying exons 6, 10, 17 and 18, or a portion of each exon, of the BRCA1 gene to produce amplified fragments, wherein the exons or portions thereof are amplified in a multiplex amplification reaction to produce multiplex amplification products for analysis;
(b) determining the sizes and amounts of amplified fragments in the multiplex amplification products and comparing the determined sizes or amounts to standard values for amplification of the same exons or portions thereof of wild-type BRCA1 gene, wherein a difference in fragment size or amount is indicative of the presence of a mutation in the BRCA1 gene; and
(c) if no mutation is detected in the BRCA1 gene as a result of the determination of the sizes and amounts of the amplification fragments, determining the sequence of one or more exons of the BRCA1 gene. - View Dependent Claims (6)
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7. A method for testing a sample for mutations in the BRCA1 gene comprising the steps of:
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(a) amplifying exons 4, 12 and 16, or a portion of each exon, of the BRCA1 gene to produce amplified fragments, wherein the exons or portions thereof are amplified in a multiplex amplification reaction to produce multiplex amplification products for analysis;
(b) determining the sizes and amounts of amplified fragments in the multiplex amplification products and comparing the determined sizes or amounts to standard values for amplification of the same exons or portions thereof of wild-type BRCA1 gene, wherein a difference in fragment size or amount is indicative of the presence of a mutation in the BRCA1 gene; and
(c) if no mutation is detected in the BRCA1 gene as a result of the determination of the sizes and amounts of the amplification fragments, determining the sequence of one or more exons of the BRCA1 gene. - View Dependent Claims (8)
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9. A method for testing a sample for mutations in the BRCA1 gene comprising the steps of:
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(a) amplifying exons 8, 13, 19 and 24, or a portion of each exon, of the BRCA1 gene to produce amplified fragments, wherein the exons or portions thereof are amplified in a multiplex amplification reaction to produce multiplex amplification products for analysis;
(b) determining the sizes and amounts of amplified fragments in the multiplex amplification products and comparing the determined sizes or amounts to standard values for amplification of the same exons or portions thereof of wild-type BRCA1 gene, wherein a difference in fragment size or amount is indicative of the presence of a mutation in the BRCA1 gene; and
(c) if no mutation is detected in the BRCA1 gene as a result of the determination of the sizes and amounts of the amplification fragments, determining the sequence of one or more exons of the BRCA1 gene. - View Dependent Claims (10)
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11. A method for testing a sample for mutations in the BRCA1 gene comprising the steps of:
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(a) amplifying exons 20, 22 and 23, or portion of each exon, of the BRCA1 gene to produce amplified fragments, wherein the exons or portions thereof are amplified in a multiplex amplification reaction to produce multiplex amplification products for analysis;
(b) determining the sizes and amounts of amplified fragments in the multiplex amplification products and comparing the determined sizes or amounts to standard values for amplification of the same exons or portions thereof of wild-type BRCA1 gene, wherein a difference in fragment size or amount is indicative of the presence of a mutation in the BRCA1 gene; and
(c) if no mutation is detected in the BRCA1 gene as a result of the determination of the sizes and amounts of the amplification fragments, determining the sequence of one or more exons of the BRCA1 gene. - View Dependent Claims (12)
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13. A method for testing a sample for mutations in the BRCA1 gene comprising the steps of:
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(a) amplifying exons 2 and 20, or a portion of each exon, of the BRCA1 gene to produce amplified fragments, wherein the exons or portions thereof are amplified using the primers identified by Sequence Nos. 3, 4, 65 and 66 in a multiplex amplification reaction to produce multiplex amplification products for analysis;
(b) determining the sizes and amounts of amplified fragments in the multiplex amplification products and comparing the determined sizes or amounts to standard values for amplification of the same exons or portions thereof of wild-type BRCA1 gene, wherein a difference in fragment size or amount is indicative of the presence of a mutation in the BRCA1 gene; and
(c) if no mutation is detected in the BRCA1 gene as a result of the determination of the sizes and amounts of the amplification fragments, determining the sequence of one or more exons of the BRCA1 gene.
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- 14. A kit for testing a sample for mutations in the BRCA1 gene comprising a mixture of at least four oligonucleotide primers, said primers being selected to amplify exons 1 and 21, or a portion of each exon, of the BRCA1 gene in a multiplex amplification reaction.
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16. A kit for testing a sample for mutations in the BRCA1 gene comprising a mixture of at least four oligonucleotide primers, said primers being selected to amplify exons 2, 5, 9 and 14, or a portion of each exon, of the BRCA1 gene in a multiplex amplification reaction, wherein the primers used for amplification are the primers identified by Sequence ID Nos. 3, 4, 9, 10, 17, 18, 55 and 56.
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17. A kit for testing a sample for mutations in the BRCA1 gene comprising a mixture of at least four oligonucleotide primers, said primers being selected to amplify exons 3, 7 and 15, or a portion of each exon, of the BRCA1 gene in a multiplex amplification reaction, wherein the primers used for amplification are the primers identified by Sequence ID Nos. 5, 6, 13, 14, 57 and 58.
- 18. A kit for testing a sample for mutations in the BRCA1 gene comprising a mixture of at least four oligonucleotide primers, said primers being selected to amplify exons 6, 10, 17 and 18, or a portion of each exon, of the BRCA1 gene in a multiplex amplification reaction.
- 20. A kit for testing a sample for mutations in the BRCA1 gene comprising a mixture of at least four oligonucleotide primers, said primers being selected to amplify exons 4, 12 and 16, or a portion of each exon, of the BRCA1 gene in a multiplex amplification reaction.
- 22. A kit for testing a sample for mutations in the BRCA1 gene comprising a mixture of at least four oligonueleotide primers, said primers being selected to amplify exons 8, 13, 19 and 24, or a portion of each exon, of the BRCA1 gene in a multiplex amplification reaction.
- 24. A kit for testing a sample for mutations in the BRCA1 gene comprising a mixture of at least four oligonucleotide primers, said primers being selected to amplify exons 20, 22 and 23, or a portion of each exon, of the BRCA1 gene in a multiplex amplification reaction.
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26. A kit for testing a sample for mutations in the BRCA1 gene comprising a mixture of at least four oligonucleotide primers, said primers being selected to amplify exons 2 and 20, or a portion of each exon, of the BRCA1 gene in a multiplex amplification reaction, wherein the primers used for amplification are the primers identified by Sequence ID Nos. 3, 4, 65 and 66.
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27. An oligonucleotide primer having the sequence as set forth in any one of Sequence ID Nos. 1 through 77.
Specification