Table 2.

Gene mapping groups with different sequence correspondence complexity

Group	Microarray probes/probe sets	RNA-Seq genes	Concordance
A	Each probe set can be exclusive mapped to one RNA-Seq gene. It is identical to RNA-Seq A set	Each gene can be exclusively mapped to one array probe set. It is identical to array A set	High
B	Each probe set can be mapped to one RNA-Seq gene, but the gene can be mapped to multiple array probe sets. It is a subset RNA-Seq C set	Each gene can be mapped to one array probe set, but the probe set can mapped to multiple genes. It is a subset of array C set	Low
C	Each probe set can be mapped to multiple RNA-Seq genes	Each gene can be mapped to multiple array probe sets	Lowest
D	Probe sets cannot be mapped (unique probe set)	Genes cannot be mapped (unique genes)	Unique features