Table 1 Categories used for cell line gene expression specificity and distribution

From: Systematic transcriptional analysis of human cell lines for gene expression landscape and tumor representation

 

Category

Description

Specificity

Enriched

A single CLD (cell line gene expression averaged by disease) has 4 times higher expression than any other CLD

Group enriched

2-10 CLDs have 4 times higher expression than any other CLD

Enhanced

One or more CLDs have 4 times higher expression than the average of all other CLDs

Low specificity

The gene does not belong to any of the above categories and is detected above cut-off (nTPM = 1) in at least one CLD

Not detected

All CLDs have an expression value less than 1

Distribution

Detected in single

Detected in a single cell line above cut-off (nTPM = 1)

Detected in some

Detected in more than one but less than one third of the cell lines

Detected in many

Detected in at least a third but not all cell lines

Detected in all

Detected above cut-off (nTPM = 1) in all cell lines

Not detected

All cell lines have an expression value less than 1

  1. For gene expression specificity, gene expression in cell lines was averaged by cancer types.