Accurate confidence aware clustering of array CGH tumor profiles
نویسندگان
چکیده
منابع مشابه
Accurate confidence aware clustering of array CGH tumor profiles
MOTIVATION Chromosomal aberrations tend to be characteristic for given (sub)types of cancer. Such aberrations can be detected with array comparative genomic hybridization (aCGH). Clustering aCGH tumor profiles aids in identifying chromosomal regions of interest and provides useful diagnostic information on the cancer type. An important issue here is to what extent individual aCGH tumor profiles...
متن کاملSmoothing waves in array CGH tumor profiles
MOTIVATION Many high-resolution array comparative genomic hybridization tumor profiles contain a wave bias, which makes accurate detection of breakpoints in such profiles more difficult. RESULTS An efficient and highly effective algorithm that largely removes the wave bias from tumor profiles by regressing the tumor profile data on data of profiles from the clinical genetics practice. Results...
متن کاملCGHcall: calling aberrations for array CGH tumor profiles
UNLABELLED CGHcall achieves high calling accuracy for array CGH data by effective use of breakpoint information from segmentation and by inclusion of several biological concepts that are ignored by existing algorithms. The algorithm is validated for simulated and verified real array CGH data. By incorporating more than three classes, CGHcall improves detection of single copy gains and amplifica...
متن کاملModel-based clustering of array CGH data
MOTIVATION Analysis of array comparative genomic hybridization (aCGH) data for recurrent DNA copy number alterations from a cohort of patients can yield distinct sets of molecular signatures or profiles. This can be due to the presence of heterogeneous cancer subtypes within a supposedly homogeneous population. RESULTS We propose a novel statistical method for automatically detecting such sub...
متن کاملWeighted clustering of called array CGH data
Array comparative genomic hybridization (aCGH) is a laboratory technique to measure chromosomal copy number changes. A clear biological interpretation of the measurements is obtained by mapping these onto an ordinal scale with categories loss/normal/gain of a copy. The pattern of gains and losses harbors a level of tumor specificity. Here, we present WECCA (weighted clustering of called aCGH da...
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ژورنال
عنوان ژورنال: Bioinformatics
سال: 2009
ISSN: 1460-2059,1367-4803
DOI: 10.1093/bioinformatics/btp603