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Table 2 Prevalence of BRCA1 causative variants in ovarian cancer by age of onset and family history

From: Frequency of BRCA1 and BRCA2 causative founder variants in ovarian cancer patients in South-East Poland

 

Number of cases

Number with a mutation

Proportion with a mutation (%)

Age group

  ≤ 50

31

3

9.7

  > 50

127

7

5.5

Family history

 Positive

39

6

15.4

 Negative

119

4

3.4

 All cases together

158

10

6.3