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Table 2 Restored DMRs in vitamin C supplemented smokers versus placebo

From: Impact of vitamin C supplementation on placental DNA methylation changes related to maternal smoking: association with gene expression and respiratory outcomes

Chr

Start

End

Nearest genes

n CpGs

Šidák adjusted p value

Genomic Region

mean ∆β VP

mean ∆β PN

% Restored

5

72596701

72597716

TMEM174/FOXD1

7

2.52E−07

IGR-shore

4.8%

− 2.3%

207%

17

64225346

64226104

APOH

5

8.85E−06

Body-opensea

0.1%

− 0.2%

33%

17

64652223

64652404

PRKCA

2

2.63E−05

Body-opensea

− 0.1%

0.8%

7%

7

150951482

150952100

SMARCD3

7

9.14E−05

Body-shelf

− 0.5%

0.3%

143%

10

743286

743974

DIP2C

6

1.65E−04

IGR-island

− 0.4%

0.1%

654%

14

64760831

64761520

ESR2

8

2.16E−04

1stExon-shore

0.1%

− 0.9%

8%

14

100203730

100204259

EML1

8

2.45E−04

IGR-shore

0.7%

− 1.7%

43%

17

81015941

81016295

B3GNTL1

4

2.70E−04

IGR-shore

− 0.9%

0.2%

403%

11

31832710

31833310

PAX6

13

4.10E−04

5'UTR-island

− 5.7%

1.4%

419%

7

149472934

149473464

SSPO

4

7.88E−04

TSS200-shore

− 0.3%

0.2%

167%

9

140193776

140193935

NRARP

3

8.37E−04

IGR-shore

− 1.9%

1.6%

117%

4

42399115

42400465

SHISA3

9

9.46E−04

TSS1500-shore

− 0.6%

1.3%

42%

5

176810555

176811258

SLC34A1

7

1.36E−03

TSS1500-opensea

0.2%

− 0.2%

114%

18

12727080

12727198

PSMG2

2

4.26E−03

IGR-opensea

0.0%

0.3%

2%

17

64636808

64636928

PRKCA

2

5.36E−03

Body-opensea

0.6%

− 0.3%

185%

2

103041487

103041922

IL18RAP

2

6.31E−03

Body-opensea

0.6%

− 1.2%

54%

17

64499496

64499742

PRKCA

2

7.98E−03

Body-opensea

− 0.3%

0.3%

102%

10

740024

740191

DIP2C

2

8.97E−03

IGR-shelf

− 1.0%

0.4%

240%

7

150896413

150896490

ABCF2

3

3.07E−02

IGR-opensea

− 0.8%

0.4%

195%

  1. Chr = Chromosome; Start/End = hg19 base pair positions; Nearest gene = nearest proximal gene using the chromosome and positions (GrCh37/hg19) provided for each probe in the Illumina HumanMethylationEPIC annotation file, matched to the nearest gene symbol using the GenomicRanges package in R; n CpGs = number of CpGs in DMR; ∆β VP = delta beta vitamin C versus placebo smokers; ∆β PN = delta beta placebo versus nonsmokers; percent restored = (− ∆β VP/∆β PN) * 100