TCGA Tag Descriptions/Copy Number Variation

Tag TCGA Data Level Tag description
allcnv 3 Segmentation files containing both germline and somatic CNVs (opposite tag: nocnv). From Broad Institute CNV analyses
alleleSpecificCN 2 Allele-specific copy number array signal intensity data for TCGA-LAML. From Washington University St. Louis.
B_Allele_Freq 2 The proportion of total signal intensity that is produced by the B allele in a SNP array. Used for TCGA-OV, GBM, LUSC projects (TCGA Analysis of Allele Specific Copy Number).
BioSizing 1 Tab-delimited bioanalysis data for calculating fragment size and concentration.
byallele 2 Copy number array intensity values calculated in an allele-specific manner. From Broad Institute CNV analyses. See alleleSpecificCN for TCGA-LAML. TCGA level 2 data.
cgh 1 Comparative genome hybridization QC data. Available as JPGs (actual photographs of microarray intensities) and PDFs (microarray reports). Subset of tag: qc.
cnv 2 Includes copy number variation files measured using CGH array and WGS with Illumina.
Delta_B_Allele_Freq 2 The absolute value of the difference between the SNP array B allele frequency in a tumor and its paired normal sample. Used for TCGA-OV, GBM, LUSC projects (TCGA Analysis of Allele Specific Copy Number).
Genotypes 2 Information on SNP array calls in A/B format. Available for TCGA-OV, GBM, LUSC projects (TCGA Analysis of Allele Specific Copy Number).
hg18 3 Copy number segmentation files that use hg18 build probes
hg19 3 Copy number segmentation files that use hg19 build probes
ismpolish 2 Intensities that have been normalized first using quantile normalization and then by median-polishing. From Broad Institute CNV analyses. Synonymous with Data Type: Normalized copy numbers. TCGA level 2 data.
LOH 3 Results from the CBS analysis of the delta B allele frequency data for each tumor/ normal pair. Used for TCGA-OV, GBM, LUSC projects (TCGA Analysis of Allele Specific Copy Number).
lowess_normalized_smoothed 1 Log ratio microarray graph, locally weighted scatterplot smoothing. Available as PNG photos for projects TCGA-OV, GBM, LUSC.
nocnv 3 Segmentation file only containing somatic CNVs (opposite tag: allcnv). From Broad Institute CNV analyses.
Normal_LogR 2 Log2 of the total signal intensity of a normal sample to reference genome ratio. Used for TCGA-OV, GBM, LUSC projects (TCGA Analysis of Allele Specific Copy Number).
Paired_LogR 2 Log2 of the total signal intensity for a tumor to its paired normal sample ratio. Used for TCGA-OV, GBM, LUSC projects (TCGA Analysis of Allele Specific Copy Number).
pairedcn 2 Tumor-normal paired copy number variation array intensity files for TCGA-LAML. From Washington University St. Louis.
QA 1 Case-level QA metrics for microarray data. Used for TCGA-OV, GBM, LUSC projects.
qc 1 QC data for microarrays. Available as JPGs (actual photographs of microarray intensities) and PDFs (microarray reports) for CGH array data. Available as XML coordinate files and project-level CSVs that contain aliquot fluorescence conjugation levels.
raw 2 Copy number value estimations calculated by summing allele-specific values. From Broad Institute CNV analyses. TCGA level 2 data.
seg 3 Contains results for copy number segmentation. Used for TCGA-OV, GBM, LUSC projects (TCGA Analysis of Allele Specific Copy Number).
segmentation 2 Copy number variation segmentation files measured using Illumina WGS. Contrast with CNV measured with array data files.
segmented 3 Segmentation files for TCGA-LAML array data. From Washington University St. Louis. TCGA level 3 data.
segnormal 3 Contains segmented log2 ratio data from normal samples. Used for TCGA-OV, GBM, LUSC projects (TCGA Analysis of Allele Specific Copy Number).
sif 2 Simple interaction format files. Synonymous with filter "Data Format: SIF"
tangent 2 Copy number values calculated with tangent normalization using BirdSuite. Note that these files are used for GDC Data Portal harmonization. TCGA level 2 data.
Unpaired_LogR 2 Tumor sample compared to reference pool of normal samples. Used for TCGA-OV, GBM projects (TCGA Analysis of Allele Specific Copy Number).

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