Hypermethylation of CTDSPL2 prior to necrotizing enterocolitis onset.

Necrotizing enterocolitis (NEC) is the most common gastrointestinal emergency in preterm infants. Epigenetic changes in DNA methylation may be present prior to NEC onset. 24 preterm infants with NEC and 45 matched controls were included. Human DNA was isolated from stool samples and methylation of , , and was measured using pyrosequencing.  displayed a higher DNA methylation of 51% compared with 17% in controls, prior to NEC onset (p = 0.047). Noninvasive measurement of methylation in stool allows for comparison with healthy preterm controls. This potentially allows future biomarker or risk predictor use. The effect of hypermethylation on gene expression remains unclear.