Table 1 Patients characteristics*.

From: Distinct gene expression profiles between primary breast cancers and brain metastases from pair-matched samples

Age

Average (range.)

56.5 (43.9–70.6)

 

Number of patients

%

ER

   positive

6

37.5%

   negative

9

56.3%

   Unknown

1

6.3%

PgR

   positive

4

25.0%

   negative

11

43.8%

   Unknown

1

6.3%

HER2

   positive

7

43.8%

   negative

7

43.8%

   Unknown

2

12.5%

de novo Stage IV or Rec.

   de novo Stage IV

2

12.5%

   Rec.

14

82.4%

Systemic chemotherapy

   Yes

14

87.5%

   No

2

12.5%

Radiation therapy

   Yes

2

12.5%

   No

14

87.5%

  1. *Age: Age at brain surgery; ER: Estrogen receptor; PgR: Progesteron receptor; HER2: Humane epidermale groeifactor receptor 2; Rec.: Recurrence; Systemic chemotherapy: Systemic chemotherapy before brain surgery; Radiation therapy before brain surgery.
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