Diagnostic genetic testing for hereditary breast and ovarian cancer in cancer patients: women's looking back on the pre-test period and a psychological evaluation.

The aim of this retrospective, exploratory study was to gain insight into how cancer patients who had a diagnostic genetic test for hereditary breast and/or ovarian cancer looked back on the pre-test period and to gain insight into the psychological impact of the genetic test result. Data were collected by semistructured interviews and self-report questionnaires in 19 BRCA1 or BRCA2 mutation carriers, 7 noncarriers, and 36 patients with an inconclusive genetic test result. Cancer patients had a genetic test mainly for other persons, especially relatives in the descendant line. Mutation carriers felt more in control, but they also reported negative effects of genetic testing such as negative emotional impact and being concerned about their children. Non-carriers were relieved. The group of women where no BRCA1 or BRCA2 mutation was found in the family was heterogeneous. Some misinterpreted the genetic test result as revealing the absence of a genetic predisposition. Others were relieved but also still aware of an increased risk, whereas a last group experienced continuing uncertainty and felt less in control. Self-report questionnaires did not reveal differences in general and cancer-specific distress as a function of the genetic test result. Furthermore, no differences among the three groups were found regarding perceived seriousness of breast and ovarian cancer and perceived control of breast cancer. Perceived control of ovarian cancer was highest in the inconclusive group.