Table 1.

Clinical characteristics of the study population

Characteristic	Number
Median age (years)	45 (range, 25–69)
Tumour type
Invasive ductal carcinoma	33
Invasive (type not specified)	2
Grade
II	15
III	20
Oestrogen receptor status
Positive	24
Negative	11
Progesterone receptor status
Positive	16
Negative	17
Not evaluable	2
HER2 status
Positive	14
Negative	21
Median Ki-67 expression (%)	45 (range, 4.3–83.3)