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Table 1 Prevalence of heterozygous loss-of-function germline mutations in the BRIP1 gene in control cohorts and BC/OC index patients according to tumour site, family history, and age at first diagnosis

From: BRIP1 loss-of-function mutations confer high risk for familial ovarian cancer, but not familial breast cancer

Study sample

n

Negative

Positive (%)

OR

95% CI

P valuea

Mean AAD (range)

ExAC control database

27,173

27,135

38 (0.14)

FLOSSIES control database

7325

7316

9 (0.12)

Geographically matched controls

2189

2186

3 (0.14)

All controls

36,687

36,637

50 (0.14)

OC index patients

706

688

18 (2.55)

19.17

11.13–33.03

<0.0001

54 (20–93)b

 Affected by OC only

523

507

16 (3.06)

23.12

13.08–40.88

< 0.0001

53 (20–93)c

 Affected by OC and BC

183

181

2 (1.09)

8.10

1.96–33.53

0.0276

60 (26–83)d

 AAD OC < 51 years

246

244

2 (0.81)

6.01

1.45–24.82

0.0471

39 (20–50)

 AAD OC < 61 years

425

417

8 (1.88)

14.06

6.62–29.84

< 0.0001

46 (20–60)

 AAD OC ≥ 61 years

255

245

10 (3.92)

29.91

14.99–59.66

< 0.0001

69 (60–93)

 Familial OC index cases, overall

611

594

17 (2.78)

20.97

12.02–36.57

< 0.0001

54 (20–93)e

 Familial OC index cases, relative(s) with BC only

421

412

9 (2.14)

16.01

7.82–23.76

< 0.0001

53 (20–85)f

 Familial OC index cases, relative(s) with OC

190

182

8 (4.21)

32.21

15.06–68.90

< 0.0001

54 (21–93)g

BC index patients

6341

6325

16 (0.25)

1.85

1.06–3.26

0.0363

47 (17–92)

 AAD BC < 51 years

4417

4407

10 (0.23)

1.66

0.84–3.28

0.1424

41 (17–50)

 AAD BC < 61 years

5627

5612

15 (0.27)

1.96

1.10–3.49

0.0272

44 (17–60)

 AAD BC ≥ 61 years

714

713

1 (0.14)

1.03

0.14–7.45

0.6260

68 (61–92)

 Familial BC index cases, overall

5668

5654

14 (0.25)

1.81

1.00–3.30

0.0623

48 (17–92)

 Familial BC index patients, relative(s) with BC onlyh

4641

4632

9 (0.19)

1.42

0.70–2.90

0.3030

48 (17–92)

 Familial BC index patients, relative(s) with OCi

1027

1022

5 (0.49)

3.59

1.43–9.01

0.0168

50 (17–92)

  1. Univariate logistic regression was performed to estimate odds ratios (OR) and 95% confidence interval (CI)
  2. AAD age at first diagnosis, BC breast cancer, ExAC Exome Aggregation Consortium, OC ovarian cancer
  3. aFisher’s exact test
  4. b–gMean AAD and range refers to a subgroup of 680 patients (b), 511 patients (c), 169 patients (d), 593 patients (e), 410 patients (f), and 183 patients (g)
  5. h2238 BC index patients had one relative with BC and 2403 BC index patients had at least two relatives with BC
  6. i All BC index patients reported at least one relative with OC. In addition, 382 BC index patients had no relatives with BC, 282 BC index cases described one relative with BC, and 363 BC index patients two relatives with BC