Table 3 Basal levels and changes of molecular parameters after treatment according to clinical response on 27 evaluable patients

From: Antitumour and biological effects of letrozole and GnRH analogue as primary therapy in premenopausal women with ER and PgR positive locally advanced operable breast cancer

 

No. of positive samples at trucut

Median value at trucut a [IQR]

No. of positive samples at surgery

Median difference between trucut and surgery [IQR]

P -value

ERα-p-Ser118

 Total

27/27

90 [90, 90]

26/26

−25 [−65, −5]

<0.001b

 CR

13/13

90 [90, 90]

12/12

−25 [−55, −5]

0.68c

 NR

14/14

90 [90, 90]

14/14

−25 [−75, −5]

 

pHER2

 Total

10/27

0 [0, 5]

8/26

0 [−5, 0]

0.49b

 CR

6/13

0 [0, 5]

5/12

0 [0, 0]

0.73c

 NR

4/14

0 [0, 3]

3/14

0 [−5, 0]

 

ER-β

 Total

23/27

48 [5, 90]

23/26

10 [0, 60]

0.02b

 CR

11/13

60 [5, 90]

10/12

10 [0, 60]

0.66c

 NR

12/14

41 [5, 80]

13/14

9 [−10, 42]

 

p-p38

 Total

11/27

0 [0, 3]

13/26

0 [−3, 20]

0.10b

 CR

5/13

0 [0, 3]

5/12

0 [−3, 20]

0.68c

 NR

6/14

0 [0, 3]

8/14

0 [−3, 12]

 

p-p44/42

 Total

23/27

10 [5, 15]

18/26

−5 [−10, 28]

0.78b

 CR

12/13

10 [10–15]

8/12

−3 [−10, 30]

0.66c

 NR

11/14

9 [3–10]

10/14

−5 [−10, 24]

 
  1. CR=clinical responders; IQR=interquartile range; NR=non-responders.
  2. aValues are expressed as percentage of stained cells.
  3. bChange of the expression of molecular parameters among all tumours assessed by the Wilcoxon signed-rank test.
  4. cChange of the expression of the molecular parameters between clinical responders and non-responders assessed by the Mann–Whitney U-test.