Development and testing of patient-centered education about hormone replacement therapy for women at high genetic risk of breast and ovarian cancer

OBJECTIVE

In this study, we aimed to develop education to assist BRCA mutation carriers in making informed decisions about HRT in the context of risk-reducing surgery, while simultaneously clarifying their treatment-specific values and reducing decisional conflict.

METHODS

We enrolled premenopausal BRCA mutation carriers ages 19-49 without prior cancer or risk-reducing salpingo-oophorectomy to structured interviews in which they reviewed education about the risks and benefits of HRT. Materials included literature-derived data demonstrating associations between HRT and commonly considered health outcomes (breast cancer, vasomotor symptoms, sexual functioning, cardiovascular disease, osteoporosis, and blood clots). Participants completed the 16-item Decisional Conflict Scale (DCS) before and after education, communicated their preferences by rating and ranking the six outcomes, and provided feedback to inform iterative revisions of the educational content.

RESULTS

25 participants completed interviews. DCS scores decreased significantly from 54.6 to 22.8 following education (p < 0.001); sub-scores for uncertainty (71.7 to 37.3), informed (71.7 to 15.3), values clarity (53.7 to 17.0), effective decision (44.2 to 25.5), and support (35.0 to 17.7) also decreased significantly. Participants ranked cardiovascular disease as the most important outcome to consider, followed by breast cancer, osteoporosis, blood clots, decline in sexual function, and hot flashes. Participants with prior mastectomy (N = 10) ranked breast cancer as the most important outcome 25% of the time, compared to 80% in participants without mastectomy (N = 15).

CONCLUSION

Following education, BRCA mutation carriers had significantly less decisional conflict regarding the choice to use HRT. This pilot study was successful in generating a prototype educational aid for further testing.

BRCA1/2 mutation carriers & risk reducing mastectomy: Who undergoes surgery and potential benefits

BACKGROUND

Risk-reducing mastectomy (RRM) is the most effective breast cancer risk-reduction strategy in BRCA1/2 mutation carriers. We examined factors associated with RRM and its relationship with overall survival (OS).

METHODS

Patients aged 18-80y at diagnosis of their BRCA1/2 mutation were selected from our institutional database and stratified by RRM receipt. Differences were tested; unadjusted OS was estimated.

RESULTS

Of the 306 patients, median age was 43y; median follow-up was 41.6mo. Patients undergoing RRM were more often married with a history of pregnancy (both p ​≤ ​0.05). Of female patients, 23.1% underwent RRM. Two patients had malignancy detected at RRM, and one developed breast cancer after RRM. Higher unadjusted OS was observed with RRM (p ​= ​0.02).

CONCLUSIONS

Our analyses suggest that family-structure may play a role in a patient's decision to undergo RRM. We also demonstrated RRM is likely associated with improved survival, potentially underscoring the importance of this option for BRCA1/2 mutation carriers.

Patterns of care and outcomes of risk reducing surgery in women with pathogenic variants in non-BRCA and Lynch syndrome ovarian cancer susceptibility genes

OBJECTIVES

Guidelines recommend risk-reducing bilateral salpingo-oophorectomy (RRSO) for women with pathogenic variants of non-BRCA and Lynch syndrome-associated ovarian cancer susceptibility genes. Optimal timing and findings at the time of RRSO for these women remains unclear. We sought to characterize practice patterns and frequency of occult gynecologic cancers for these women at our two institutions.

METHODS

Women with germline ovarian cancer susceptibility gene pathogenic variants who underwent RRSO between 1/2000-9/2019 were reviewed in an IRB-approved study. All patients were asymptomatic with no suspicion for malignancy at time of RRSO. Clinico-pathologic characteristics were extracted from the medical records.

RESULTS

26 Non-BRCA (9 BRIP1, 9 RAD51C, and 8 RAD51D) and 75 Lynch (36 MLH1, 18 MSH2, 21 MSH6) pathogenic variants carriers were identified. Median age at time of RRSO was 47. There were no occurrences of occult ovarian or fallopian tube cancer in either group. Two patients (3%) in the Lynch group had occult endometrial cancer. Median follow up was 18 and 35 months for non-BRCA and Lynch patients, respectively. No patient developed primary peritoneal cancer upon follow up. Post-surgical complications occurred in 9/101 (9%) of patients. Hormone replacement therapy (HRT) was rarely used despite reported post-menopausal symptoms in 6/25 (23%) and 7/75 (37%) patients, respectively.

CONCLUSIONS

No occult ovarian or tubal cancers were observed in either group. No recurrent or primary gynecologic-related cancers occurred upon follow-up. Despite frequent menopausal symptoms, HRT use was rare. Both groups experienced surgical complications when hysterectomy and/or concurrent colon surgery was performed suggesting concurrent surgeries should only be performed when indicated.

The impact of risk reducing bilateral salpingo-oophorectomy on sexual function in BRCA1/2 mutation carriers and women with Lynch syndrome: A systematic review and meta-analysis

OBJECTIVE

In the absence of an effective screening test, women with a high genetic predisposition for ovarian cancer are recommended to undergo risk-reducing bilateral salpingo-oophorectomy (RRBSO) once childbearing is complete. This reduces the risk of ovarian cancer by up to 96%, but can result in undesirable side effects, including menopausal symptoms and sexual dysfunction. We have performed a systematic review and meta-analysis to investigate the effect of RRBSO on sexual function in women at high risk of breast/and or ovarian cancer.

METHODS

A literature search of the AMED (Allied and complementary medicine), Embase and Medline databases was performed, using search terms including sexual function, risk reducing and oophorectomy. Results were filtered according to the PRISMA protocol. Quality assessment of studies was performed using the Newcastle-Ottawa scale. Data were pooled in meta-analysis.

RESULTS

There were 21 eligible studies, 10 of which reported sufficient data for meta-analysis. Most studies were retrospective cohort or observational studies. Fifteen of the 21 studies (71%) reported a negative impact of RRBSO on sexual function. Participant numbers ranged from 37 to 1522. Meta-analysis was performed with studies including 3201 patients. This demonstrated that RRBSO has a statistically significant negative impact on sexual function (SMD -0.63, [-0.82, -0.44], p = 0.03). There was a trend towards reduced sexual pleasure and increased discomfort but this did not reach statistical significance. There was minimal change in the frequency of sex. There was a significant increase in vaginal dryness post-RRBSO (SMD 9.25, [3.66, 14.83], p < 0.00001). There was no significant difference in sexual function between pre-menopausal and post-menopausal RRBSO. Hormone replacement therapy (HRT) did not abolish this negative impact.

CONCLUSION

Sexual function declines post RRBSO, independent of menopausal status. Comprehensive pre-operative counselling regarding anticipated menopausal and sexual symptoms is key to setting realistic patient expectations and minimising post-operative distress. Information and support regarding management of these side effects should be available to all patients.