WID-qEC test regions were discovered in an epigenome-wide approach (approximately 850,000 methylation sites). Cervicovaginal samples from 572 controls and 144 women with EC (FORECEE study) were subjected to the Illumina MethylationEPIC array following a previously established pipeline.24 (link) The epigenome-wide study and details of the methylation-specific PCR-based MethyLight assay11 (link) are described in the Data Supplement.
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