Table 1

The sequence patterns encoding the poly Q tract

Sample size16321643
*Group A, breast tumour cell lines; B, primary breast tumours; C, blood DNA from patients carrying mutations in BRCA1/BRCA2 genes; D, general population
†the sequence patterns from the surrounding tissue of breast cancer.
Common sequence patterns (Gln)n A* B* C* D*
1 (CAG)6CAA(CAG)9(CAACAG)3(CAACAGCAG)2CAA291113826
2 (CAG)6CAA(CAG)8(CAACAG)3(CAACAGCAG)2CAA288201120
3 (CAG)3CAA(CAG)9(CAACAG)3(CAACAGCAG)2CAA26410314
4 (CAG)3CAA(CAG)2CAA(CAG)11(CAACAG)2(CAACAGCAG)2CAA293517
Uncommon sequence patterns:
5 (CAG)3CAA(CAG)8(CAACAG)3(CAACAGCAG)2CAA251611
6 (CAG)3CAA(CAG)11(CAACAG)3(CAACAGCAG)2CAA281
7 (CAG)3CAA(CAG)2CAA(CAG)9(CAACAG)2(CAACAGCAG)2CAA271
8 (CAG)3CAA(CAG)2CAA(CAG)10(CAACAG)2(CAACAGCAG)2CAA282132
9 (CAG)3CAA(CAG)2CAA(CAG)11(CAACAG)(CAACAGCAG)2CAA271
10 (CAG)6CAA(CAG)7(CAACAG)3(CAACAGCAG)2CAA2723
11 (CAG)6CAA(CAG)7(CAACAG)4(CAACAGCAG)2CAA291
12 (CAG)6CAA(CAG)11(CAACAG)2(CAACAGCAG)2CAA2911
13 (CAG)6CAA(CAG)10(CAACAG)2(CAACAGCAG)2CAA2813
14 (CAG)6CAA(CAG)9(CAACAG)2(CAACAGCAG)2CAA27211
15 (CAG)6CAA(CAG)8(CAACAG)2(CAACAGCAG)2CAA2612
16 (CAG)6(CAACAG)2(CAACAGCAG)2CAA171
17 (CAG)5CAA(CAG)9(CAACAG)3(CAACAGCAG)2CAA28421
18 (CAG)5CAA(CAG)8(CAACAG)3(CAACAGCAG)2CAA27151
19 (CAG)5CAA(CAG)7(CAACAG)3(CAACAGCAG)2CAA261
20 (CAG)5CAA(CAG)9(CAACAG)2(CAACAGCAG)2CAA261
21 (CAG)5(CAA)2(CAG)8(CAACAG)3(CAACAGCAG)2CAA281
22 (CAG)5CAACAGCAA(CAG)7(CAACAG)3(CAACAGCAG)2CAA281
23 (CAG)5CGGCAA(CAG)8(CAACAG)3(CAACAGCAG)2CAA281
24† (CAG)3CAA(CAG)2CAA(CAG)10CAA(CAACAG)2(CAACAGCAG)2CAA291
25† (CAG)3CAA(CAG)2CAA(CAG)7(CAACAG)2(CAACAGCAG)2CAA251
Total number of distinct sequence patterns 13 21 8 11