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CpG analysis of PON1 methylation status. A, All 660 Gene Enriched by DMR‐related CpGs, the PON1 gene was hypermethylated. B, A differentially methylated region (DMR_431) of PON1 was showed and most CpG islands on the PON1 gene promoter were hypermethylated. C, Kaplan‐Meier analysis showed that hypermethylated PON1 had shorter overall survival
