Odds ratios for estrogen receptor negative breast cancer risk associated with lack of DNA methylation.

SFRP1, a polycomb group target gene unrelated to the hormonal exposure (estrogen), predicted the estrogen receptor negative breast cancer status. The data was significant after adjusting for age alone or for age and family history of breast cancer. ERT = estrogen receptor-�� target; DMHR = differently methylated depending on hormone receptor status; PCGT = stem cell polycomb group target; MBC = methylated in breast cancer; ER = estrogen receptor; OR = odds ratio; CI = confidence interval; * indicates P-values