Table 2.
Ki67 subgroup distribution and proportion of molecular luminal subtypes for all tumours and for tumours with HG1, HG2 and HG3
| Molecular subtype | Ki67 < 14%, n (%) | Ki67 14–19%, n (%) | Ki67 ≥ 20%, n (%) | Total, n (%) |
|---|---|---|---|---|
| All tumours (n = 2063) | ||||
| Luminal A | 500 (96) | 379 (86) | 579 (53) | 1458 (71) |
| Luminal B | 23 (4) | 64 (14) | 518 (47) | 605 (29) |
| Total | 523 (25) | 443 (22) | 1097 (53) | 2063 (100) |
| HG1 tumours (n = 458) | ||||
| Luminal A | 211 (97) | 116 (89) | 96 (87) | 423 (92) |
| Luminal B | 7 (3) | 14 (11) | 14 (13) | 35 (8) |
| Total | 218 (48) | 130 (28) | 110 (24) | 458 (100) |
| HG2 tumours (n = 1202) | ||||
| Luminal A | 282 (95) | 255 (86) | 389 (64) | 926 (77) |
| Luminal B | 15 (5) | 43 (14) | 218 (36) | 276 (23) |
| Total | 297 (25) | 298 (25) | 607 (51) | 1202 (100) |
| HG3 tumours (n = 403) | ||||
| Luminal A | 7 (88) | 8 (53) | 94 (25) | 109 (27) |
| Luminal B | 1 (13) | 7 (47) | 286 (75) | 294 (73) |
| Total | 8 (2) | 15 (4) | 380 (94) | 403 (100) |