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Table 4 Differences in presentation of aberrant ER methylation within the luminal phenotype subgroups

From: ESR1gene promoter region methylation in free circulating DNA and its correlation with estrogen receptor protein expression in tumor tissue in breast cancer patients

Phenotype N OS at 5 years P
ER non-methylated    
  Luminal A 28 93% NS
  Luminal B 14 92% NS
  Triple Negative 3 80% NS
  Her2 4 75% NS
ER methylated    
  Luminal A 11 82% NS
  Luminal B 8 86% NS
  Triple negative 12 75% NS
  Her2 6 67% NS
  1. OS: overall survival.