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Table 1 Patient groups in the study

From: Women with familial risk for breast cancer have an increased frequency of aldehyde dehydrogenase expressing cells in breast ductules

Patient group

Breast cancer and mutation status

Number of patients

Age in years, median (range)

Genetic predisposition

Parity

Hormone use at time of surgery

Family history

BRCA1

BRCA2

0

1 or 2

3 or 4

Data lacking

HRT

OC

Data lacking

A

Cancer, non-BRCA1/2

21

50 (31–77)

4

NA

NA

8

4

9

0

3

1

0

B

Cancer, BRCA1

17

43 (23–81)

17

17

NA

4

10

0

3

4

1

3

C

Cancer, BRCA2

11

51 (33–74)

11

NA

11

0

7

3

1

0

1

2

D

Prophylactic mastectomy, BRCA1

12

37 (23–54)

12

12

NA

0

6

4

1

0

4

1

E

Prophylactic mastectomy, BRCA2

11

37 (31–51)

11

NA

11

0

5

5

1

0

0

1

F

Mammoplasty, non-cancer, non-BRCA

34

31 (20–68)

5

NA

NA

19

7

8

0

0

8

1

  1. Patient groups included in the study and subsequently re-grouped according to the listed parameters for analysis of ALDH+ cells. The table presents selected clinical, genetic, and hormonal characteristics of patients.
  2. NA, not applicable; HRT, hormone replacement therapy; OC, oral contraceptive.