From: BRCA promoter methylation in sporadic versus BRCA germline mutation-related breast cancers
 | BRCA1-C | BRCA2-C | Sporadic-C | BRCA1-N | BRCA2-N | Non-BRCA- related-N | p ValueA | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
n | % | n | % | n | % | n | % | n | % | n | % | ||
Number of samples (%) | 39 | 23.5 | 33 | 19.9 | 80 | 48.2 | 5 | 3 | 4 | 2.4 | 5 | 3 | Â |
Age, years |  |  |  |  |  |  |  |  |  | 9.56°10−9*ǂ | |||
 Median | 43 | N/A | 46 | N/A | 58 | N/A | 31 | N/A | 36.5 | N/A | 22 | N/A | 0.549B |
 Range | 30–80 | N/A | 21–69 | N/A | 29–86 | N/A | 29–33 | N/A | 35–38 | N/A | 18–52 | N/A |  |
GradeC | Â | Â | Â | Â | Â | Â | Â | Â | Â | 0.00007*Ç‚Ç‚ | |||
 1 | 0 | 0 | 1 | 3 | 20 | 25.3 |  |  |  |  | |||
 2 | 9 | 23.1 | 10 | 30.3 | 25 | 31.6 |  |  |  |  | |||
 3 | 30 | 76.9 | 22 | 66.7 | 34 | 43 |  |  |  |  | |||
Tumor type | Â | Â | Â | Â | Â | Â | Â | Â | Â | 0.230Ç‚Ç‚ | |||
 Ductal | 34 | 87.2 | 29 | 87.9 | 69 | 86.3 |  |  |  |  | |||
 Lobular | 2 | 5.1 | 2 | 6.1 | 10 | 12.5 |  |  |  |  | |||
 Other | 3 | 7.7 | 2 | 6.1 | 1 | 1.3 |  |  |  |  | |||
ER | Â | Â | Â | Â | Â | Â | Â | Â | Â | 0.0004*Ç‚Ç‚Ç‚ | |||
 Negative | 26 | 66.7 | 8 | 24.2 | 23 | 28.8 |  |  |  |  | |||
 Positive | 13 | 33.3 | 25 | 75.8 | 57 | 71.3 |  |  |  |  | |||
PR | Â | Â | Â | Â | Â | Â | Â | Â | Â | 0.001*Ç‚Ç‚Ç‚ | |||
 Negative | 29 | 74.4 | 17 | 51.5 | 30 | 37.5 |  |  |  |  | |||
 Positive | 10 | 25.6 | 16 | 48.5 | 50 | 62.5 |  |  |  |  | |||
HER2 | Â | Â | Â | Â | Â | Â | Â | Â | Â | 0.68Ç‚Ç‚ | |||
 Negative | 38 | 97.4 | 32 | 97 | 75 | 93.8 |  |  |  |  | |||
 Positive | 1 | 2.6 | 1 | 3 | 5 | 6.3 |  |  |  |  |