Table 1.
GEO methylation studies included for analysis
| GEO accession | Tissue type | Total samples | Normal samples | Tumor samples |
|---|---|---|---|---|
|
GSE26990 |
Breast** |
89 |
42 |
47 |
|
GSE26126 |
Prostate |
193 |
98 |
95 |
|
GSE17648 |
Colorectal |
44 |
22 |
22 |
|
GSE25062 |
Colorectal |
154 |
29 |
125 |
| GSE26974 | Sperm | 21 | 21 | 0 |
All methylation profiling was done based on Illumina HumanMethylation27 BeadChip (GEO platform GPL8490).
** Also included nine normal samples from other tissues (blood, spleen, colon, fetal brain, liver, testis, embryo, and adult brain).