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Background L1 and SAT-α are repetitive DNA elements that undergo demethylation in association with cancerization. Unlike L1 hypomethaylation, nothing is known regarding the prognostic implication of SAT-α hypomethylation alongside L1 hypomethaylaton in gastric cancers. Methods Formalin-fixed paraffin-embedded samples from 492 cases of advanced gastric cancer were analyzed to determine their L1 and...
Backgrounds Reportedly, the pyrosequencing methylation assay can produce inconsistent results between paired snap-frozen and formalin-fixed paraffin-embedded archival tissue samples. In this study, we assayed the methylation levels at four individual CpG sites of L1 using pyrosequencing and found that the methylation levels at individual CpG sites were different but were closely correlated between...
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