Table 4.
CHR* | Trimester | Hyper/hypo (+/−)† | Genic CpGs | Nongenic CpGs | Total no. | Promoter CpGs | % Of promoter CpGs‡ |
---|---|---|---|---|---|---|---|
13 | First | + | 17 | 7 | 24 | 11 | 45.8 |
13 | First | − | 226 | 84 | 310 | 102 | 32.9 |
13 | Third | + | 74 | 26 | 100 | 31 | 31.0 |
13 | Third | − | 57 | 25 | 82 | 21 | 25.6 |
18 | First | + | 13 | 5 | 18 | 6 | 33.3 |
18 | First | − | 166 | 90 | 256 | 65 | 25.4 |
18 | Third | + | 30 | 12 | 42 | 15 | 35.7 |
18 | Third | − | 102 | 60 | 162 | 28 | 17.3 |
21 | First | + | 0 | 1 | 1 | 0 | 0.0 |
21 | First | − | 220 | 41 | 261 | 121 | 46.4 |
21 | Third | + | 4 | 4 | 8 | 1 | 12.5 |
21 | Third | − | 90 | 37 | 127 | 49 | 38.6 |
X | First | + | 2 | 1 | 3 | 0 | 0.0 |
X | First | − | 592 | 103 | 695 | 414 | 59.6 |
X | Third | + | 5 | 1 | 6 | 0 | 0.0 |
X | Third | − | 609 | 93 | 702 | 460 | 65.5 |
Y | First | + | 3 | 2 | 5 | 0 | 0.0 |
Y | First | − | 49 | 21 | 70 | 35 | 50.0 |
Y | Third | + | 28 | 33 | 61 | 3 | 4.9 |
Y | Third | − | 12 | 11 | 23 | 8 | 34.8 |
Methylation status of genic, nongenic, and promoter CpG islands in chromosomes 13, 18, 21, X, and Y.
Chromosome.
Hypermethylated/hypomethylated.
Percentage of promoter CpGs compared with the total number of differentially methylated CpG islands.