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Table 2 Number of loci with large differences in methylation between donors and recipients, and their relationship to surgery age and current age

From: Developmental genes targeted for epigenetic variation between twin-twin transfusion syndrome children

Sample type Donor ID Recipient ID Total number of loci with methylation difference >0.2 or <−0.2 Gestational age at laser surgery (weeks) Current age when sampled (years)
Saliva 614 651 296 15.86 0.42
Saliva 663 576 551 20.86 3
Saliva 556 604 540 18.14 5
Blood 614 651 24 15.86 0.42
Blood 556 604 6 18.14 5
  1. Pearson correlation between age of fetal surgery and number of loci with a large difference in saliva is 0.86 (P <0.3). Pearson correlation between the age when the sample was obtained and the number of loci with large difference in saliva is 0.88 (P <0.3).