Method and apparatus for detecting translocation
First Claim
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1. A method for detecting a translocation, comprising:
- acquiring a binary version of sequence alignment/map (BAM) for a first pair of chromosomes and a second pair of chromosomes; and
detecting, using the BAM, a translocation generated in at least one chromosome by selecting at least one translocation case from among multiple translocation cases, including;
determining, using the BAM, at least one Break Point (BP) of the pairs of chromosomes, each of the at least one BP corresponding to respective point where a translocation has occurred between the first and second pairs of chromosomes, including determining, using the BAM, Discordant Fragment (DF) information corresponding to the at least one BP;
determining, using the BAM, a Read Depth (RD) of a first region in the first pair of chromosomes, a RD of a second region in the second pair of chromosomes, an average RD of the BAM, and concordant fragment (CF) information of the second region indicating the presence of CFs for the second region;
selecting a first translocation case when the RD of the first region is 1.5 times the average RD, the RD of the second region is 0.5 times the average RD, the DF information indicates the presence of DFs in the second pair of chromosomes, and CFs are present for the first region and the second region; and
selecting a second translocation case when the RD of the first region is 2.0 times the average RD, the RD of the second region is zero, the DF information indicates the presence of DFs in the second pair of chromosomes, and CFs are present for the first region and absent for the second region,wherein the first translocation case corresponds to a single translocation from the first pair of chromosomes to a first chromosome of the second pair of chromosomes, andwherein the second translocation case corresponds to first and second translocations from the first pair of chromosomes to the first chromosome and a second chromosome, respectively, of the second pair of chromosomes.
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Abstract
Disclosed are a method and an apparatus for detecting a translocation. The apparatus acquires BAM for a first pair of chromosomes and a second pair of chromosomes. Also, the apparatus detects a translocation generated in at least one chromosome by selecting at least one translocation case corresponding to the translocation information produced on the basis of BAM from among multiple translocation cases in which a translocation may be generated in at least one of the first and the second chromosomes.
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16 Claims
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1. A method for detecting a translocation, comprising:
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acquiring a binary version of sequence alignment/map (BAM) for a first pair of chromosomes and a second pair of chromosomes; and detecting, using the BAM, a translocation generated in at least one chromosome by selecting at least one translocation case from among multiple translocation cases, including; determining, using the BAM, at least one Break Point (BP) of the pairs of chromosomes, each of the at least one BP corresponding to respective point where a translocation has occurred between the first and second pairs of chromosomes, including determining, using the BAM, Discordant Fragment (DF) information corresponding to the at least one BP; determining, using the BAM, a Read Depth (RD) of a first region in the first pair of chromosomes, a RD of a second region in the second pair of chromosomes, an average RD of the BAM, and concordant fragment (CF) information of the second region indicating the presence of CFs for the second region; selecting a first translocation case when the RD of the first region is 1.5 times the average RD, the RD of the second region is 0.5 times the average RD, the DF information indicates the presence of DFs in the second pair of chromosomes, and CFs are present for the first region and the second region; and selecting a second translocation case when the RD of the first region is 2.0 times the average RD, the RD of the second region is zero, the DF information indicates the presence of DFs in the second pair of chromosomes, and CFs are present for the first region and absent for the second region, wherein the first translocation case corresponds to a single translocation from the first pair of chromosomes to a first chromosome of the second pair of chromosomes, and wherein the second translocation case corresponds to first and second translocations from the first pair of chromosomes to the first chromosome and a second chromosome, respectively, of the second pair of chromosomes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for detecting translocation, comprising:
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a processor configured to; acquire a binary version of sequence alignment/map (BAM) for a first pair of chromosomes and a second pair of chromosomes, and detect, using the BAM, a translocation generated in at least one chromosome by selecting at least one translocation case from among multiple translocation cases, wherein the processor is configured to; determine, using the BAM, at least one Break Point (BP) of the pairs of chromosomes, each of the at least one BP corresponding to respective point where a translocation has occurred between the first and second pairs of chromosomes, including determining, using the BAM, Discordant Fragment (DF) information corresponding to the at least one BP; determine, using the BAM, a Read Depth (RD) of a first region in the first pair of chromosomes, a RD of a second region in the second pair of chromosomes, an average RD of the BAM, and concordant fragment (CF) information of the second region indicating the presence of CF for the second region; select a first translocation case when the RD of the first region is 1.5 times the average RD, the RD of the second region is 0.5 times the average RD, the DF information indicates the presence of DFs in the second pair of chromosomes, and CF is present for the first region and the second region; and select a second translocation case when the RD of the first region is 2.0 times the average RD, the RD of the second region is zero, the DF information indicates the presence of DFs in the second pair of chromosomes, and CF is present for the first region and absent for the second region, wherein the first translocation case corresponds to a single translocation from the first pair of chromosomes to a first chromosome of the second pair of chromosomes, and wherein the second translocation case corresponds to first and second translocations from the first pair of chromosomes to the first chromosome and a second chromosome, respectively, of the second pair of chromosomes. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification