Table 3.

Methylation in n = 99 Breast tumors exceeding 5.0% methylation threshold

	No. of tumors	Average percent (% ×100)	Range of percent (% ×100)
Gene name	Methylated*	Tumor Methylation	Tumor Methylation
ERα	26	32	6–84
TWIST	37	38	6–93
Cyclin D2	24	44	7–93
CDH1	2	19	17–21
APC	44	41	8–91
RASSF1A	62	38	6–96
HIN1	28	62	5–95
RARb	40	37	6–93
BRCA1	23	47	7–84
BRCA2	7	33	7–89

Numer of tumors methylated: Total number of tumors that exceeded a methylation threshold of 5.0 percent for each of ten genes. Range of percent tumor methylation and percent tumor methylation: Range of percent methylation and mean methylation values, respectively for those genes that exceeded a 5.0% methylation threshold.