Table 2.

Prevalence of germline mutations in 16 DNA‐repair genes in this cohort

Group	Number of patients	Mutation cases	Prevalence (%)	P a
All patients	7657	257	3.4
FBC	659	34	5.2	0.002
EBC	1241	56	4.5	0.003
SBC	5757	167	2.9

EBC, early‐onset breast cancer (diagnosed at and before age 40); FBC, familial breast cancer; SBC, sporadic breast cancer.

^avs SBC.