Background
Methods
Breast cancer patients and healthy controls
Mutation analysis
Exon | Strand | Primer name | Nucleotide sequence (5'→3') | Amplicon lenght (bp) | Annealing temperature (°C) |
---|---|---|---|---|---|
2 | Forward | Ex2F | CTGTTTCCAGATTTCTCCC | ||
Reverse | Ex2R | GTGAACCCAGAAAATATTCTCC | 331 | 58 | |
3 | Forward | Ex3F | CCCTGGAGTGCAATCTCACT | ||
Reverse | Ex3RN | TAGCGACAGCATGGCTGAA | 319 | 48 | |
4 | Forward | Ex4F | CCTGGGTGAACTGGGCTGTAG | ||
Reverse | Ex4RN | TAACAGTAATAATTAAGACTC | 316 | 48 | |
5 | Forward | Ex5FN | TTGCCTACCTGTAAGTTATTTATG | ||
Reverse | Ex5RN | ACCATGTTCAGCTGTAACTAACTG | 233 | 60 | |
6 | Forward | Ex6F | GAGCTGTTTTGGCCTTTGAGA | ||
Reverse | Ex6RN | CTGAGTGGGTTGCTACTGTCCT | 317 | 55 | |
7 | Forward | Ex7F | GTTCTGATTCCATGTGAGGTT | ||
Reverse | Ex7R | GTACATATAAAACACATACTGAGT | 448 | 55 | |
8 | Forward | Ex8F | GATGTTCCTCAAATTCTGAGATAA | ||
Reverse | Ex8R | CATCTAAAAGCTTTTACATTCAAC | 386 | 55 | |
9 | Forward | Ex9F | GCCTATAGTGTGAATTTTAAAATG | ||
Reverse | Ex9R | CCTAGTTAACCAAAGTTTACTAAC | 395 | 55 | |
10 | Forward | Ex10F | GATCAACGCATGACAATAATGATG | ||
Reverse | Ex10R | GGGTTACTCACTAGATTTAATCTG | 320 | 55 | |
11 | Forward | Ex11F | GCATGTTTTGTTGGGTTTCATTGT | ||
Reverse | Ex11R | GGTATGTATTAAACACATGCTAGC | 326 | 55 | |
12 | Forward | Ex12F | GTACCAGCTCTTTCAAATGAG | ||
Reverse | Ex12R | CTATCTTTAAAAGAGTCAACCAC | 360 | 55 | |
13 | Forward | Ex13FN | GTGCTGGGATTACAGGTGTGAGCCA | ||
Reverse | Ex13RN | ACTTGCTGGCACTTCAGGTATCTTC | 317 | 60 | |
14 | Forward | Ex14F | CTTGTTGCTTGATCTTTTATGTAC | ||
Reverse | Ex14R | CTAGGAAGCTTACTGTGGTAA | 356 | 55 | |
15 | Forward | Ex15FN | ACAGCTCTATGAGATATATTG | ||
Reverse | Ex15RN | TCATAGGAGAACAAGTACAAT | 504 | 55 | |
16 | Forward | Ex16FN | TTACTTAAAGACATTGAACTT | ||
Reverse | Ex16RNN | CACTATAAAAGCAAAGCGC | 392 | 54 | |
17 | Forward | Ex17FN | CTGTTAGAAGTTAATATGATG | ||
Reverse | Ex17RN | GAATACATACCAGTTCCTATG | 325 | 55 | |
18 | Forward | Ex18F | CCAATTTTCTGTCTGTCCCAC | ||
Reverse | Ex18R | GATAGTAGAGCTCATGTTATGTG | 254 | 55 | |
19 | Forward | Ex19F | CTTCACTAGAAAAAGCAAGTG | ||
Reverse | Ex19R | CCACCATATTTAAGGAATTAATC | 523 | 48 | |
20A | Forward | Ex20AFN | ACCTAGCAATTATGTTAGCT | ||
Reverse | Ex20ARN | TCTGTATCTTCAGGATCGTA | 584 | 48 | |
20B | Forward | Ex20BFN | ATTGATGCCACCCTTACTA | ||
Reverse | Ex20BRNN | TAACATAAGCATGATGACATA | 565 | 54 |
Statistical analysis
Results and discussion
Exon/Intron | Nucleotide change | Amino acid change | Frequency for heterozygotes (%) |
---|---|---|---|
int5 | 508-31 C→G | - | 11/43 (25.6) |
ex6 | 577 G→A | Val193Ile | 1/43 (2.3) |
int14 | 2097+7 G→A | - | 1/43 (2.3) |
ex19 | 2637 G→A | Glu879Glu | 31/43 (72.1)* |
ex19 | 2755 C→T | Ser919Pro | 32/43 (74.4)* |
ex20 | 3411 C→T | Tyr1137Tyr | 27/43 (62.8)* |
Cases
|
Controls
| ||||||
---|---|---|---|---|---|---|---|
n | % | n | % | OR* | 95% CI | p | |
Unselected breast cancer patients, all
| 866 | 731 | |||||
Pro/Pro | 184 | 21.2 | 148 | 20.2 | 1 | ||
Pro/Ser | 428 | 49.4 | 382 | 52.3 | 0.901 | 0.697–1.165 | 0.427 |
Ser/Ser | 254 | 29.3 | 201 | 27.5 | 1.016 | 0.765–1.351 | 0.911 |
Pro/Ser + Ser/Ser | 682 | 78.8 | 583 | 79.8 | 0.941 | 0.738–1.120 | 0.623 |
Unselected breast cancer patients, diagnosis <50 years
| 276 | 476 | |||||
Pro/Pro | 56 | 20.3 | 96 | 20.2 | 1 | ||
Pro/Ser | 140 | 50.7 | 249 | 52.3 | 0.964 | 0.653–1.423 | 0.853 |
Ser/Ser | 80 | 29 | 131 | 27.5 | 1.047 | 0.680–1.611 | 0.835 |
Pro/Ser + Ser/Ser | 220 | 79.7 | 380 | 79.8 | 0.993 | 0.686–1.436 | 0.968 |
Unselected breast cancer patients, diagnosis ≥50 years
| 590 | 255 | |||||
Pro/Pro | 128 | 21.7 | 52 | 20.4 | 1 | ||
Pro/Ser | 288 | 48.8 | 133 | 52.2 | 0.878 | 0.600–1.289 | 0.511 |
Ser/Ser | 174 | 29.5 | 70 | 27.5 | 1.010 | 0.660–1.545 | 0.964 |
Pro/Ser + Ser/Ser | 462 | 78.3 | 203 | 79.6 | 0.925 | 0.644–1.328 | 0.671 |
BACH1 Ser919Pro | |||||
---|---|---|---|---|---|
Total n (%) | Pro/Pro | Pro/Ser | Ser/Ser | p | |
Histology
| 909 | ||||
Carcinoma ductale | 713 (78.4) | 145 (76.3) | 358 (78.7) | 210 (79.5) | 0.480 |
Carcinoma lobulare | 130 (14.3) | 25 (13.2) | 70 (15.4) | 35 (13.3) | |
Carcinoma medullare | 13 (1.4) | 5 (2.6) | 5 (1.1) | 3 (1.1) | |
Other | 53 (5.8) | 15 (7.9) | 22 (4.8) | 16 (6.1) | |
Tumor grade
| 817 | ||||
1 | 223 (27.3) | 51 (29.8) | 116 (28.2) | 56 (23.9) | 0.702 |
2 | 353 (43.2) | 73 (42.7) | 174 (42.2) | 106 (45.3) | |
3 | 241 (29.5) | 47 (27.5) | 122 (29.6) | 72 (30.8) | |
Tumor size, pT
| 887 | ||||
1 | 545 (61.4) | 121 (65.8) | 269 (60.7) | 155 (59.6) | 0.423 |
2 | 282 (31.8) | 47 (25.5) | 148 (33.4) | 87 (33.5) | |
3 | 31 (3.5) | 7 (3.8) | 15 (3.4) | 9 (3.5) | |
4 | 29 (3.3) | 9 (4.9) | 11 (2.5) | 9 (3.5) | |
Lymph node status, pN
| 909 | ||||
Negative | 477 (52.5) | 104 (54.7) | 223 (49.0) | 150 (56.8) | 0.101 |
Positive | 432 (47.5) | 86 (45.3) | 232 (51.0) | 114 (43.2) | |
Distant Metastasis, pM
| 870 | ||||
Negative | 829 (95.3) | 168 (93.9) | 416 (96.1) | 245 (95.0) | 0.478 |
Positive | 41 (4.7) | 11 (6.1) | 17 (3.9) | 13 (5.0) | |
Estrogen receptor status
| 862 | ||||
Positive | 680 (78.9) | 139 (76.8) | 339 (78.5) | 202 (81.1) | 0.530 |
Negative | 182 (21.1) | 42 (23.2) | 93 (21.5) | 47 (18.9) | |
Pogesterone receptor status
| 863 | ||||
Positive | 591 (68.5) | 129 (70.9) | 289 (66.9) | 173 (69.5) | 0.577 |
Negative | 272 (31.5) | 53 (29.1) | 143 (33.1) | 76 (30.5) |