Table 1. Gene expression datasets.
| Tissue type | Dataset GEO ID | Description | Platform | Normal samples |
| I | GSE15745 | Brain tissue | Illumina HumanRef-8 v2.0 | 584 |
| GSE11882 | Brain tissue | Affymetrix U133Plus | 173 | |
| GSE15222 | Brain tissue | Illumina HumanRef-8 | 363 | |
| GSE13344 | Brain tissue | Affymetrix 1.0 ST Array | 95 | |
| GSE5281 | Brain tissue | Affymetrix U133Plus | 74 | |
| II | GSE13933 | Airway brushing | Affymetrix U133Plus | 87 |
| GSE19188 | Lung tissue | Affymetrix U133Plus | 65 | |
| GSE18842 | Lung tissue | Affymetrix U133Plus | 45 | |
| GSE4302 | Airway brushing | Affymetrix U133Plus | 44 | |
| GSE5264 | Airway epithelial cells | Affymetrix U133Plus | 30 | |
| III | GSE12446 | Endometrium | Affymetrix U133Plus | 31 |
| GSE10971 | Fallopian tubes | Affymetrix U133Plus | 24 |