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A data type is a label to categorize the many forms of platform data within the TCGA Network.

Examples of data type include DNA Methylation, Copy Number Results and SNP.

Data Type Classification

Each platform can potentially produce many kinds of data (data types). For example, SNP-based array platforms are the most complex in that the platform yields three data types: Copy Number Results, LOH and SNP. The following table identifies data types produced by the six listed platforms.

Value

Agilent Human Genome CGH Custom Microarray 2x415K

Agilent Human Genome CGH Microarray 244A

Agilent SurePrint G3 Human CGH Microarray Kit 1x1M

Affymetrix Genome-Wide Human SNP Array 6.0

Illumina 550K Infinium HumanHap550 SNP Chip

Illumina Human1M-Duo BeadChip

Copy Number Results

yes

yes

yes

yes

yes

yes

LOH

yes

yes

yes

SNP

yes

yes

yes

Relationships Between Data Type and Data Level

Each platform can produce multiple data types. To understand data categorization, it is important to clarify the relationship between data type and data level.

Each data type is associated with sets of data that span one more data levels. Each center and platform may have a slightly different concept of data level depending on their data types, and the algorithms used for analysis.

For descriptions of data types and corresponding data levels see Data Types and Data Levels.

 

 

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