Table 2 Paired analyses of c-MYC amplification and copy number gain before and after neoadjuvant chemotherapy.

From: Clinical implications of changes in the diversity of c-MYC copy number variation after neoadjuvant chemotherapy in breast cancer

 

Group

Both (+)

Only pre-NAC (+)

Only post-NAC (+)

Both (−)

c-MYC amplification

Total (n = 119)

5 (4.2)

13 (10.9)

4 (3.4)

97 (81.5)

Chemo-resistant (n = 38)

2 (5.3)

3 (7.9)

4 (10.5)*

29 (76.3)

Chemo-sensitive (n = 81)

3 (3.7)

10 (12.3)

0 (0)*

68 (84.0)

c-MYC copy number gain

Total (n = 119)

34 (28.6)

30 (25.2)

10 (8.4)

45 (37.8)

Chemo-resistant (n = 38)

13 (34.2)

6 (15.8)

3 (7.9)

16 (42.1)

Chemo-sensitive (n = 81)

21 (25.9)

24 (29.6)

7 (8.6)

29 (35.8)

  1. Numbers in parentheses indicate percentage.
  2. NAC, neoadjuvant chemotherapy.
  3. *P = 0.009.