Decision Coaching Eased BRCA1/2 Reproductive Counseling Conflict

Key Takeaways

• Unaffected women with BRCA1/2 pathogenic variants in Germany with open family planning had higher unadjusted baseline decisional conflict than women with completed family planning, although this difference was no longer significant after adjustment for baseline characteristics.
• Nurse-led decision coaching plus an evidence-based decision aid was associated with lower decisional conflict than usual care in the randomized cohort.
• At 12 weeks, improvement was broader in women with open family planning, with lower total and subscale conflict and movement into a milder conflict range.
• Initially undecided women with open family planning were more likely to reach a preventive decision after coaching.
• Intensified breast surveillance was chosen more often by coached women with open family planning.

Unaffected women with BRCA1/2 pathogenic variants who are still weighing pregnancy and future childbearing against cancer-risk reduction face a particularly complex counseling crossroads, because the timing and acceptability of preventive options can overlap with reproductive plans. Whether structured decision support changes uncertainty or readiness around choices such as intensified breast surveillance, risk-reducing bilateral mastectomy, and risk-reducing bilateral salpingo-oophorectomy remains an important question in this setting. In an exploratory post hoc subgroup analysis of the randomized EDCP-BRCA trial—whose primary endpoint was role congruence in decision-making—the authors assessed decisional conflict and decision status by family-planning subgroup.

In the exploratory EDCP-BRCA subgroup analysis of a randomized controlled trial at six German Consortium centers in Germany, eligible participants were women aged 25 to 60 years with a definite BRCA1/2 pathogenic variant, no personal history of breast or ovarian cancer, sufficient German language skills, and written informed consent. Family-planning status was defined at baseline by whether participants reported family planning as complete or not complete.

Among 389 randomized women, 198 were assigned to nurse-led in-person decision coaching plus an evidence-based structured decision aid added to usual care and 191 to usual care alone.

Participants completed a baseline questionnaire before randomization and follow-up at 12 weeks and 6 months; outcomes were decisional conflict on the Decisional Conflict Scale (DCS) and decision status on the Stage of Decision-Making Scale. The preventive options discussed were intensified breast surveillance (IBS), risk-reducing bilateral mastectomy (RRBM), and risk-reducing bilateral salpingo-oophorectomy (RRBSO), and the trial was registered as DRKS00015527.

Women with open family planning entered the trial with more decision-related burden, with a mean total DCS score of 39.5 versus 34.4 among women who had completed family planning, a statistically significant difference. After adjustment for baseline differences between the subgroups, that association was no longer significant.

In the broader decision coaching outcomes in unaffected BRCA1/2 carriers, decisional conflict declined in both trial arms, with lower scores in the intervention group at 12 weeks and again at 6 months. The clearest 12-week subgroup pattern was among women with open family planning, where total and subscale conflict scores were lower across the coached group and more often shifted into a milder conflict range than with usual care. By 12 weeks, 71.4% versus 54.7% had reached a preventive decision in the intervention and control groups. By 6 months, 75.1% versus 61.1% had reached a preventive decision.

Among initially undecided women with open family planning, 61.8% in the intervention group versus 23.2% in the control group had reached a preventive decision by 12 weeks. In the open-family-planning subgroup overall, coached women were also more likely to choose IBS, while differences for RRBM or RRBSO were not significant.

The authors described these subgroup findings as exploratory and post hoc, and they noted that baseline differences between women with open and completed family planning could leave residual confounding despite adjusted models. They also said that incomplete follow-up may have introduced selective non-response bias if questionnaire return was related to decisional conflict, and that no formal adjustment for multiple testing was applied. Within this German trial context, the pattern supports a narrower interpretation about decision-related outcomes rather than a broader claim about preventive care pathways.

Overall, the authors reported that nurse-led decision coaching paired with a structured decision aid was associated with lower decisional conflict and greater decision completion than usual care alone, with the clearest pattern among women whose family planning remained open. They added that further prospective studies with predefined hypotheses are needed to confirm whether that subgroup signal holds.

Clinician Questions

Why did the EDCP-BRCA subgroup analysis focus its detailed open-versus-completed family-planning comparison at 12 weeks?

Investigators emphasized the 12-week comparison because, in unaffected BRCA1/2 pathogenic variant carriers in EDCP-BRCA, the main decline in DCS and the key separation between decision coaching and usual care had already emerged by that assessment, while 6-month scores stayed in the same general range rather than showing a different pattern.

What counted as being decided on a preventive option in the EDCP-BRCA trial?

In unaffected BRCA1/2 pathogenic variant carriers in EDCP-BRCA, the Stage of Decision-Making Scale was dichotomized as decided versus undecided for preventive choices. Women who indicated that they had already made a choice were classified as decided, while women who had not yet thought about the options, were considering the options, or were close to choosing one option were classified as undecided.

How were Decisional Conflict Scale scores interpreted in women with BRCA1/2 pathogenic variants?

In women with BRCA1/2 pathogenic variants, DCS scores below 25 were interpreted as mild decisional conflict, scores from 25 to 37.5 as moderate conflict, and scores above 37.5 were associated with decision delay or uncertainty about implementation.

Which baseline differences separated women with open versus completed family planning in this BRCA1/2 cohort?

Women with open family planning in this BRCA1/2 cohort were more often single, academic, younger, and childless than women with completed family planning. The authors said those imbalances were the reason for adjusted regression models and a continued caution that residual confounding could remain.