BRCA1/2 mutations and risk-reducing bilateral salpingo-oophorectomy among Latinas: The UPTAKE study

Risk-reducing salpingo-oophorectomy among diverse patients with BRCA mutations at an urban public hospital: a mixed methods study

OBJECTIVES

To assess the association of socioeconomic demographics with recommendation for and uptake of risk-reducing bilateral salpingo-oophorectomy (rrBSO) in patients with BRCA1 and BRCA2 (BRCA1/2) mutations.

DESIGN

Retrospective cohort, semistructured qualitative interviews.

SETTING AND PARTICIPANTS

BRCA1/2 mutation carriers at an urban, public hospital with a racially and socioeconomically diverse population.

INTERVENTION

None.

PRIMARY AND SECONDARY OUTCOMES

The primary outcomes were rate of rrBSO recommendation and completion. Secondary outcomes were sociodemographic variables associated with rrBSO completion.

RESULTS

The cohort included 167 patients with BRCA1/2 mutations of whom 39% identified as black (n=65), 35% white (n=59) and 19% Hispanic (n=32). Over 95% (n=159) received the recommendation for age-appropriate rrBSO, and 52% (n=87) underwent rrBSO. Women who completed rrBSO were older in univariable analysis (p=0.05), but not in multivariable analysis. Completion of rrBSO was associated with residence in zip codes with lower unemployment and documented recommendation for rrBSO (p<0.05). All subjects who still received care in the health system (n=79) were invited to complete interviews regarding rrBSO decision-making, but only four completed surveys for a response rate of 5.1%. Themes that emerged included menopause, emotional impact and familial support.

CONCLUSIONS

In this understudied population, genetic counselling and surrogates of financial health were associated with rrBSO uptake, highlighting genetics referrals and addressing social determinants of health as opportunities to improve cancer prevention and reduce health inequities. Our study demonstrates a need for more culturally centred recruiting methods for qualitative research in marginalised communities to ensure adequate representation in the literature regarding rrBSO.

Uptake of Risk-Reducing Measures, Cascade Testing, and Related Challenges Among Carriers of Breast Cancer-Associated Germline Pathogenic Variants in Mexico

PURPOSE

Genetic cancer risk assessment (GCRA) provides pathogenic variant (PV) carriers with the invaluable opportunity to undertake timely cancer risk-reducing (RR) measures and initiate cascade testing (CT). This study describes the uptake of these strategies and the related barriers among breast cancer-associated germline PV carriers in Mexico.

METHODS

Carriers who were at least 6 months after disclosure of genetic test results at two GCRA referral centers were invited to answer a survey assessing sociodemographic characteristics, awareness of their carrier status and its implications, uptake of RR measures according to international guidelines by PV, CT initiation, and associated challenges.

RESULTS

Of the eligible carriers, 246/384 (64%) answered the survey (median age: 44 years). Most were female (88%), married/in domestic partnership (66%), and had personal breast/ovarian cancer history (61%). PVs included BRCA1/2 (75%), CHEK2 (10%), PALB2 (5%), ATM (5%), NF1 (2%), RAD51C (2%), PTEN (1%), and TP53 (1%). Most (87%) participants were aware of their carrier status. When recommended, 37% underwent RR bilateral mastectomy, 48% RR oophorectomy, 70% annual mammogram, and 20% breast magnetic resonance imaging. Challenges hindering the uptake of RR measures included financial limitations (67%), lack of recommendation by their physician (35%), and fear (24%). Nearly all (98%) claimed sharing their results with their relatives. CT was initiated in 63% of families and was associated with carriers being married/in domestic partnership (P = .04) and believing GCRA was useful (P < .001).

CONCLUSION

Despite the resource-constrained setting, relevant rates of RR measures and CT were observed. Targeted interventions to reduce out-of-pocket expenses and improve patient-physician communication and patients' understanding on carrier status are warranted to enhance the overall benefit of GCRA and ultimately improve the provision of patient-centered care to both carriers and their at-risk relatives.

Race, ethnicity, and ancestry reporting in genetic counseling research: A focused mapping review and synthesis

Studies on the use of Race, Ethnicity, and Ancestry (REA) concepts and terms in genetic research are limited. We aimed to describe the collection, reporting, and use of REA data in genetic counseling research. We undertook a focused mapping review and synthesis of the Journal of Genetic Counseling 2021 publications. We used a mapping proforma based on the Race, Ethnicity, And Culture in Health checklist to extract data. Of the 177 screened articles, 132 met our inclusion criteria of reporting primary data about participants. The sample REA characteristics were described in 80 (61%) articles, with 6% providing a definition or conceptualization of the REA term/s used and 23% including a rationale for their study in terms of REA factors. Group labels were most often reported using population descriptors, such as "race," "ethnicity," "race/ethnicity," and "ancestry." Several group labels were used under different population descriptors. For instance, the group labels "White" and "Asian" were used under all population descriptors. Most studies (79%) ascertained REA characteristics by participants' self-report. Three (15%) of the 20 qualitative studies mentioned the relevance of the interviewers' REA characteristics in relation to the participants' REA characteristics. Of the 55 quantitative studies, 19 (35%) used REA factors in the data analysis. Of the 80 articles describing the sample REA characteristics, 20% referred moderately or a great deal to any REA factors in the results interpretation, 46% acknowledged the REA factors in the study limitations, and 15% discussed the implications of REA reporting for genetic counseling practice. Our review documents extensive variation in how sample REA characteristics are described and used in genetic counseling research. Our findings provide a baseline against which to evaluate the effects of guidelines and recommendations for the collection, responsible use, and report of participants' REA characteristics in genetic counseling research.