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1. WO2018144782 - METHODS OF DETECTING SOMATIC AND GERMLINE VARIANTS IN IMPURE TUMORS

Publication Number WO/2018/144782
Publication Date 09.08.2018
International Application No. PCT/US2018/016522
International Filing Date 01.02.2018
IPC
G06F 19/10 2011.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
19Digital computing or data processing equipment or methods, specially adapted for specific applications
10Bioinformatics, i.e. methods or systems for genetic or protein-related data processing in computational molecular biology
G06F 19/18 2011.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
19Digital computing or data processing equipment or methods, specially adapted for specific applications
10Bioinformatics, i.e. methods or systems for genetic or protein-related data processing in computational molecular biology
18for functional genomics or proteomics, e.g. genotype-phenotype associations, linkage disequilibrium, population genetics, binding site identification, mutagenesis, genotyping or genome annotation, protein-protein interactions or protein-nucleic acid interactions
G06F 19/22 2011.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
19Digital computing or data processing equipment or methods, specially adapted for specific applications
10Bioinformatics, i.e. methods or systems for genetic or protein-related data processing in computational molecular biology
22for sequence comparison involving nucleotides or amino acids, e.g. homology search, motif or Single-Nucleotide Polymorphism discovery or sequence alignment
G06F 19/28 2011.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
19Digital computing or data processing equipment or methods, specially adapted for specific applications
10Bioinformatics, i.e. methods or systems for genetic or protein-related data processing in computational molecular biology
28for programming tools or database systems, e.g. ontologies, heterogeneous data integration, data warehousing or computing architectures
G01N 33/574 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
48Biological material, e.g. blood, urine; Haemocytometers
50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
53Immunoassay; Biospecific binding assay; Materials therefor
574for cancer
C12Q 1/68 2018.1
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
QMEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
1Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
68involving nucleic acids
CPC
C12Q 1/6886
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
QMEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS
1Measuring or testing processes involving enzymes, nucleic acids or microorganisms
68involving nucleic acids
6876Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
6883for diseases caused by alterations of genetic material
6886for cancer
C12Q 2600/156
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
QMEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS
2600Oligonucleotides characterized by their use
156Polymorphic or mutational markers
G01N 33/574
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
48Biological material, e.g. blood, urine
50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
53Immunoassay; Biospecific binding assay; Materials therefor
574for cancer
G16B 20/00
GPHYSICS
16INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
BBIOINFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR GENETIC OR PROTEIN-RELATED DATA PROCESSING IN COMPUTATIONAL MOLECULAR BIOLOGY
20ICT specially adapted for functional genomics or proteomics, e.g. genotype-phenotype associations
G16B 20/20
GPHYSICS
16INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
BBIOINFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR GENETIC OR PROTEIN-RELATED DATA PROCESSING IN COMPUTATIONAL MOLECULAR BIOLOGY
20ICT specially adapted for functional genomics or proteomics, e.g. genotype-phenotype associations
20Allele or variant detection, e.g. single nucleotide polymorphism [SNP] detection
G16B 20/40
GPHYSICS
16INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
BBIOINFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR GENETIC OR PROTEIN-RELATED DATA PROCESSING IN COMPUTATIONAL MOLECULAR BIOLOGY
20ICT specially adapted for functional genomics or proteomics, e.g. genotype-phenotype associations
40Population genetics; Linkage disequilibrium
Applicants
  • THE TRANSLATIONAL GENOMICS RESEARCH INSTITUTE [US]/[US]
Inventors
  • HALPERIN, Rebecca
  • CRAIG, David
Agents
  • FULLER, Rodney J.
Priority Data
62/453,49201.02.2017US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) METHODS OF DETECTING SOMATIC AND GERMLINE VARIANTS IN IMPURE TUMORS
(FR) PROCÉDÉS DE DÉTECTION DE VARIANTS SOMATIQUES ET DE LIGNÉE GERMINALE DANS DES TUMEURS IMPURES
Abstract
(EN) A system is provided that considers allele fraction shifts as a function of copy number and clonal heterogeneity. The system leverages differences between allele frequencies to differentiate between somatic and normal variants in impure tumor samples. In solid tumors, stromal cells and infiltrating lymphocytes are typically interspersed among the tumor cells. The normal cell contamination in tumors can be leveraged to differentiate somatic from germline variants. We explicitly model allelic copy number and clonal sample fractions so that we can examine how these factors impact the power to detect somatic variants. The system models the copy number alterations, which can also affect the allele frequencies of both somatic and germline variants. The expected allele frequencies can be calculated. The expected allele frequencies for somatic and germline differ with tumor content for different copy number alterations.
(FR) L'invention concerne également un système qui considère des décalages de fractions d'allèles en fonction du nombre de copies et de l'hétérogénéité clonale. Le système tire profit de différences entre des fréquences d'allèle pour différencier des variants somatiques et normaux dans des échantillons de tumeur impure. Dans les tumeurs solides, les cellules stromales et les lymphocytes infiltrant sont typiquement intercalés parmi les cellules tumorales. La contamination cellulaire normale dans les tumeurs peut être exploitée pour différencier des somatique de variants de lignée germinale. Nous décrivons explicitement un nombre de copies alléliques et des fractions d'échantillons clonales de sorte que l'on puisse examiner la manière dont ces facteurs impactent la puissance pour détecter des variants somatiques. Le système modélise les altérations du nombre de copies, qui peuvent également affecter les fréquences d'allèle des variantes somatiques et germinales. Les fréquences d'allèle attendues peuvent être calculées. Les fréquences d'allèle attendues pour une somatique et une lignée germinale diffèrent par un contenu tumoral pour différentes modifications de nombre de copies.
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