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Genome Alteration Print (GAP): a tool to visualize and mine complex cancer genomic profiles obtained by SNP arrays

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TLDR
This work describes a method for automatic detection of absolute segmental copy numbers and genotype status in complex cancer genome profiles measured with single-nucleotide polymorphism (SNP) arrays based on pattern recognition of segmented and smoothed copy number and allelic imbalance profiles.
Abstract
We describe a method for automatic detection of absolute segmental copy numbers and genotype status in complex cancer genome profiles measured with single-nucleotide polymorphism (SNP) arrays. The method is based on pattern recognition of segmented and smoothed copy number and allelic imbalance profiles. Assignments were verified by DNA indexes of primary tumors and karyotypes of cell lines. The method performs well even for poor-quality data, low tumor content, and highly rearranged tumor genomes.

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Journal ArticleDOI

Whole genomes redefine the mutational landscape of pancreatic cancer.

Nicola Waddell, +88 more
- 26 Feb 2015 - 
TL;DR: Genomic instability co-segregated with inactivation of DNA maintenance genes (BRCA1, BRCA2 or PALB2) and a mutational signature of DNA damage repair deficiency, and 4 of 5 individuals with these measures of defective DNA maintenance responded to platinum therapy.
Journal ArticleDOI

Whole-genome characterization of chemoresistant ovarian cancer

Ann-Marie Patch, +99 more
- 28 May 2015 - 
TL;DR: It is shown that gene breakage commonly inactivates the tumour suppressors RB1, NF1, RAD51B and PTEN in HGSC, and contributes to acquired chemotherapy resistance.
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Integrated analysis of somatic mutations and focal copy-number changes identifies key genes and pathways in hepatocellular carcinoma

TL;DR: Functional analyses showed tumor suppressor properties for IRF2, whose inactivation, exclusively found in hepatitis B virus-related tumors, led to impaired TP53 function, and association of mutations in specific genes suggested that Wnt/β-catenin signaling might cooperate in liver carcinogenesis with both oxidative stress metabolism and Ras/mitogen-activated protein kinase (MAPK) pathways.
Journal ArticleDOI

Control-FREEC

TL;DR: The tool Control-FREEC is presented, that enables automatic calculation of copy number and allelic content profiles from NGS data, and consequently predicts regions of genomic alteration such as gains, losses and LOH.
References
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Journal ArticleDOI

PennCNV: An integrated hidden Markov model designed for high-resolution copy number variation detection in whole-genome SNP genotyping data

TL;DR: PennCNV, a hidden Markov model (HMM) based approach, is presented for kilobase-resolution detection of CNVs from Illumina high-density SNP genotyping data, demonstrating the feasibility of whole-genome fine-mapping ofCNVs via high- density SNP genotypesing.
Journal ArticleDOI

Molecular Definition of Breast Tumor Heterogeneity

TL;DR: In this paper, gene expression and genetic profiles of cells purified from cancerous and normal breast tissue using markers previously associated with stem-cell-like properties were determined using markers from the TGF-β pathway, where its inhibition induced a more epithelial phenotype.
Journal ArticleDOI

A faster circular binary segmentation algorithm for the analysis of array CGH data

TL;DR: A hybrid approach to obtain the P-value of the test statistic in linear time is presented and it is shown that the substantial gain in speed with only a negligible loss in accuracy and that the stopping rule further increases speed.
Journal ArticleDOI

Chromosome aberrations in solid tumors.

TL;DR: Current knowledge regarding aberrations is summarized, their functional importance is discussed, their mechanisms by which aberration may form during cancer progression are suggested and examples of clinical advances that have come from studies of chromosome aberrings are provided.
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