Do Breast Cancer Patients Tested in the Oncology Care Setting Share BRCA Mutation Results with Family Members and Health Care Providers?

Table 2

Frequency of sharing test results with first-degree relatives by mutation status.

Relationship		Shared results 𝑛 (%)
		Positive; (𝑛=3) 𝑛 or % (range)	True negative; (𝑛=31) 𝑛 or % (range)	Uninformative; (𝑛=11) 𝑛 or % (range)
Parent	Mother (𝑛=16)	𝑛=1	𝑛=10	𝑛=5
	𝑛 (%)	1 (100.0)	9 (90.0)	4 (80.0)
	Father (𝑛=19)	𝑛=1	𝑛=12	𝑛=6
	𝑛 (%)	1 (100.0)	10 (83.3)	4 (66.7)
Sibling	Sister (𝑛=23)	𝑛=2	𝑛=14	𝑛=7
	Avg. number per participant	1.5 (1.0–2.0)	1.6 (1.0–4.0)	2.1 (1.0–4.0)
	Avg. % disclosed	100.0 (100.0-100.0)	92.9 (0.0–100.0)	91.7 (66.7–100.0)
	Brother (𝑛=22)	𝑛=2	𝑛=16	𝑛=4
	Avg. number per participant	2.0 (1.0–3.0)	1.6 (1.0–4.0)	2.0 (1.0–4.0)
	Avg. % disclosed	50.0 (0.0–100.0)	89.1 (0.0–100.0)	56.3 (0.0–100.0)
Child	Daughter
	<18 years (𝑛=4)	𝑛=0	𝑛=3	𝑛=1
	Avg. number per participant	—	1.3 (1.0–2.0)	2.0 (— )
	Avg. % disclosed	—	66.7 (0.0–100.0)	50.0 (— )
	18+ years (𝑛=19)	𝑛=2	𝑛=12	𝑛=5
	Avg. number per participant	1.5 (1.0–2.0)	1.3 (1.0–2.0)	1.4 (1.0–2.0)
	Avg. % disclosed	50.0 (0.0–100.0)	100.0 (100.0-100.0)	100.0 (100.0-100.0)
	Son
	<18 years (𝑛=7)	𝑛=0	𝑛=5	𝑛=2
	Avg. number per participant	—	1.0 (1.0-1.0)	2.0 (2.0-2.0)
	Avg. % disclosed	—	100.0 (100.0-100.0)	0.0 (0.0-0.0)
	18+ years (𝑛=15)	𝑛=0	𝑛=9	𝑛=6
	Avg. number per participant	—	1.4 (1.0–3.0)	1.7 (1.0–3.0)
	Avg. % disclosed	—	83.3 (0.0–100.0)	100.0 (100.0-100.0)

^∗Excluded those who did not share their results.
^∗Analyses are based on living relatives and include participants who reported at least one living relative in each relationship category.