Table 2.
Global average proportion of methylated CpG sites |
Genome distribution of differentially methylated CpG sites |
||||||||
---|---|---|---|---|---|---|---|---|---|
No. of CpG- sites | hypertrophy | hyperplasia | difference | Pb | No. of CpG sites | No. of DMS | % of all CpG sites | % of all DMS | |
In relation to gene regionc | |||||||||
TSS 1500 | 99,132 | 0.399 ± 0.011 | 0.392 ± 0.008 | 0.007 | 0.008 | 99,132 | 5591 | 0.173 | 0.159 |
TSS 200 | 62,009 | 0.186 ± 0.005 | 0.182 ± 0.005 | 0.004 | 0.004 | 62,009 | 2015 | 0.108 | 0.057 |
5′ UTR | 68,096 | 0.449 ± 0.012 | 0.443 ± 0.009 | 0.006 | 0.018 | 68,096 | 4594 | 0.119 | 0.131 |
1st Exon | 24,866 | 0.217 ± 0.006 | 0.214 ± 0.005 | 0.003 | 0.008 | 24,866 | 833 | 0.043 | 0.024 |
Body | 292,753 | 0.662 ± 0.018 | 0.656 ± 0.012 | 0.006 | 0.100 | 292,753 | 20,491 | 0.512 | 0.583 |
Exon Bnd | 5440 | 0.785 ± 0.021 | 0.780 ± 0.014 | 0.005 | 0.241 | 5440 | 270 | 0.010 | 0.008 |
3′ UTR | 19,701 | 0.702 ± 0.019 | 0.694 ± 0.014 | 0.008 | 0.056 | 19,701 | 1344 | 0.034 | 0.038 |
In relation to CpG Islandc | |||||||||
N Shelf | 30,283 | 0.701 ± 0.019 | 0.696 ± 0.013 | 0.006 | 0.147 | 18,646 | 1352 | 0.033 | 0.038 |
N Shore | 79,745 | 0.446 ± 0.013 | 0.439 ± 0.009 | 0.007 | 0.008 | 64,165 | 4381 | 0.112 | 0.125 |
CpG Island | 158,706 | 0.184 ± 0.006 | 0.182 ± 0.005 | 0.003 | 0.025 | 133,745 | 2296 | 0.234 | 0.065 |
S Shore | 68,056 | 0.44 ± 0.013 | 0.432 ± 0.009 | 0.007 | 0.006 | 55,930 | 3901 | 0.098 | 0.111 |
S Shelf | 28,054 | 0.709 ± 0.019 | 0.703 ± 0.013 | 0.005 | 0.155 | 16,998 | 1232 | 0.030 | 0.035 |
Open sea | 455,182 | 0.694 ± 0.019 | 0.688 ± 0.014 | 0.006 | 0.103 | 282,513 | 21,976 | 0.494 | 0.625 |
All | 820,026 | 0.551 ± 0.015 | 0.545 ± 0.011 | 0.006 | 0.058 | 571,997 | 35,138 | 1 | 1 |
Values are mean ± SD.
Analyses of global average proportion of methylated CpG sites in relation to CpG Islands were performed in all 820,026 interrogated CpG sites. Analyses in relation to gene region and of DMS were limited to 571,997 CpG sites linked to genes.
Student's t test (2 sided) was used to compare global average proportion of methylated CpG sites between the two clinical groups.
Annotation is based on Illumina annotation of EPIC arrays; within 1500 basepairs of transcriptional start site (TSS 1500); within 200 basepairs of transcriptional start site (TSS 200); untranslated region (UTR), exon boundary (Exon Bnd); upstream of CpG island (N); downstream CpG island (S); unrelated to CpG island (Open sea).