Balanced translocation in comparative hybridization
First Claim
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1. A method of detecting the presence or absence of chromosomal abnormalities and a balanced translocation in a test sample of genomic nucleic acid, comprising:
- (ii) hybridizing to a genomic nucleic acid array;
a) said test sample of genomic nucleic acid;
b) a reference genomic nucleic acid;
(ii) hybridizing at least one probe for detecting a balanced translocation to said test and reference genomic nucleic acid hybridized to said array, wherein at least one of said probes has a sequence that spans a translocation break point; and
(iii) determining the relative amount of hybridized test and reference nucleic acids hybridized to the array as well as determining hybridization of said at least one probe for detecting a balanced translocation to said test and reference genomic nucleic acid hybridized to said array, wherein detecting differential binding to said array of said test sample compared to said reference genomic nucleic acid indicates the presence of a chromosomal abnormality, and wherein detecting differential binding of at least one probe for detecting a balanced translocation to said test sample compared to said reference genomic nucleic acid indicates the presence of a balanced translocation.
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Abstract
The present invention provides comparative genomic hybridization methods for detecting and mapping chromosomal or genetic abnormalities associated with various diseases or with predisposition to various diseases, or to detecting the phenomena of large scale copy number variants. The method includes hybridization with one or more probes for detecting balanced translocations. Such probes may be complementary to the moving genomic segment which is translocated or may be complementary to the translocation break point.
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30 Claims
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1. A method of detecting the presence or absence of chromosomal abnormalities and a balanced translocation in a test sample of genomic nucleic acid, comprising:
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(ii) hybridizing to a genomic nucleic acid array; a) said test sample of genomic nucleic acid; b) a reference genomic nucleic acid; (ii) hybridizing at least one probe for detecting a balanced translocation to said test and reference genomic nucleic acid hybridized to said array, wherein at least one of said probes has a sequence that spans a translocation break point; and (iii) determining the relative amount of hybridized test and reference nucleic acids hybridized to the array as well as determining hybridization of said at least one probe for detecting a balanced translocation to said test and reference genomic nucleic acid hybridized to said array, wherein detecting differential binding to said array of said test sample compared to said reference genomic nucleic acid indicates the presence of a chromosomal abnormality, and wherein detecting differential binding of at least one probe for detecting a balanced translocation to said test sample compared to said reference genomic nucleic acid indicates the presence of a balanced translocation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification