Discovery of mutations in the breast and ovarian cancer susceptibility genes BRCA1 and BRCA2 can have emotional consequences for both the tested individual and his or her relatives. This secondary analysis study investigated how BRCA testing impacts family dynamics and relationships. For the original study, a grounded theory inquiry, participants were recruited from a hereditary breast/ovarian cancer syndrome support website and open-ended interviews were performed asking about individual and family experiences after BRCA testing. All 12 participants whose interviews were included in the secondary analysis had a BRCA mutation. For the secondary analysis, thematic analysis was conducted and revealed three main themes characterizing the effect of BRCA testing on family relationships: 1. That the first in the family to have testing or seek genetic counseling takes on a special family role that can be difficult for them; 2. That discussions in the family often change; and 3. That individuals may feel more or less connected to certain family members. These changes seemed to relate to family cancer history, relationships, coping strategies, communication patterns, and mutation status. Genetic counselors might find it useful to explore these issues in order to prepare clients before BRCA testing and to support them through shifts in family dynamics after disclosure of results.