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Correspondence and requests for materials should be addressed to Maria C. Katapodi, Department of Clinical Research, University of Basel, Missionstrasse 64, 4055 Basel, Switzerland
Personalized information is paramount to patient-centered communication and decision-making regarding risk management in hereditary cancer syndromes. This systematic review identified information needs of individuals from families harboring BRCA pathogenic variants and compared findings based on gender (women vs men) and clinical characteristics (patients with cancer vs previvors and BRCA heterozygotes vs untested relatives).
Methods
We screened 8115 studies identified from databases and citation searching. The quality of selected studies was assessed using the Mixed Methods Appraisal Tool. Narrative synthesis was conducted based on content analysis.
Results
From 18 selected studies including 1063 individuals, we identified 9 categories of information needs. Risk of bias in the selected studies was moderate. Men, untested relatives, and racial and ethnic minorities were underrepresented. Frequently required information was personalized cancer risk and risk-reducing strategies, including decision-making, family implications of hereditary cancers, psychological issues, and cascade testing. Subgroup analyses showed that information needs depended on gender, personal cancer history, and cascade testing in relatives.
Conclusion
We identified comprehensive and detailed informational needs of individuals from families harboring BRCA pathogenic variants and gaps in international guidelines. Needs for personalized information varied based on gender, health, and genetic testing status. Findings of this study have implications for genetic counseling, tailoring educational materials, and personalizing interventions.
Petrucelli N, Daly MB. Pal T. BRCA1- and BRCA2-associated hereditary breast and ovarian cancer. In: Adam MP, Ardinger HH, Mirzaa GM, et al, eds. Gene Reviews [Internet]. University of Washington; 1993-2022.
Women have approximately 70% risk of breast cancer and 12% to 45% risk of ovarian cancer by age 80 years if they carry pathogenic variants in BRCA1 and BRCA2 genes (hereafter termed as BRCA), respectively.
Having a high cancer risk and the possibility of passing on the pathogenic variant to offspring cause significant uncertainty regarding risk management and difficulties in family communication about genetic testing results.
Women with BRCA pathogenic variants face significant challenges in deciding about risk-reducing options, including prophylactic mastectomy and salpingo-oophorectomy,
Petrucelli N, Daly MB. Pal T. BRCA1- and BRCA2-associated hereditary breast and ovarian cancer. In: Adam MP, Ardinger HH, Mirzaa GM, et al, eds. Gene Reviews [Internet]. University of Washington; 1993-2022.
Providing personalized information is an effective strategy for enhancing knowledge about the genetics of cancer risks and managing anxiety and uncertainty in families harboring pathogenic BRCA variants.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
and whether they have a cancer diagnosis associated with Hereditary Breast and Ovarian Cancer Syndrome (HBOC)- or they have a BRCA pathogenic variant but they have never been diagnosed with cancer.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
Previous studies highlighted the increased need for personalized information; however, in practice, the most common unmet need of members from these families is the lack of adequate information.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Although genetic counseling addresses genetic testing, cancer risks, prevention, and risk management, members of families harboring pathogenic BRCA variants, including those who had counseling, often require additional information and actively search informational sources, eg, in the internet
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
This systematic review explored the informational needs of individuals from families harboring pathogenic BRCA variants and compared the findings based on gender, ie, women vs men; personal cancer history, ie, individuals with an HBOC-associated cancer diagnosis (patients with cancer) vs individuals with a pathogenic variant but without cancer (previvors); and genetic testing status, ie, individuals with a confirmed pathogenic BRCA variant vs untested relatives who consider cascade testing. As personalization and tailoring increases the relevance of messages in medical communication,
our findings may assist clinicians in various disciplines meet patients’ expectations, promote patient-centered communication, and increase the quality of patient care.
Materials and Methods
Design
This systematic review was performed and written following the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) 2020 guidelines.
We also used Sandelowski’s mixed-method review methodology to explore the topic across different types of study designs, specifically studies that collected quantitative and/or narrative data.
The protocol was prospectively registered in the International Prospective Register of Systematic Reviews (PROSPERO) database under review number CRD42021293285.
Eligibility criteria
Supplemental Table 1 presents detailed eligibility criteria. Studies were included if they examined the information needs of different members of families harboring pathogenic BRCAvariants, focusing on those with a confirmed pathogenic variant and/or on individuals from families known to harbor an HBOC-associated vaiant who did not have genetic testing. We considered only original studies, including randomized trials, cross-sectional, case-control, retrospective or prospective cohort studies, and case reports. We excluded studies that did not address the outcome of interest, ie, information needs and studies that did not target the populations of interest, ie, solely focused on health care professionals or non−blood relatives, or involved animal or preclinical experiments. To improve the quality of this systematic review, we excluded studies that were not published in peer-reviewed journals, eg, conference abstracts or gray literature, eg, dissertations, white reports, and studies that did not collect primary data, eg, reviews, letters, editorials. Finally, we eliminated studies published in languages other than English because of time and resource limitations.
Literature search strategy
The scientific literature was searched in 3 stages. First, we identified the correct search terms by reviewing 2572 relevant abstracts retrieved from Ovid MEDLINE, Ovid Embase, EBSCO CINAHL, and Cochrane Central Register of Controlled Trials on September 01, 2021. The final search terms were combined using “OR” for similar terms and “AND” for different clusters. The main search terms were “BRCA,” “hereditary breast-ovarian cancer,” “HBOC,” “cancer predisposition,” “genetic testing,” “genetic counseling,” and “informational needs” (Supplemental Table 2). Second, literature search using the predetermined search terms was performed in 5 databases, ie, Ovid MEDLINE, Ovid Embase, EBSCO CINAHL, Cochrane Central Register of Controlled Trials, and Ovid PsycINFO, from database inception to October 06, 2021. The database search was finalized on May 12, 2022. Third, we identified additional articles by manually searching the reference lists of eligible articles using Google Scholar (Figure 1). All publication periods were included in the initial search for the review of titles and abstracts.
After exporting relevant literature from each database to a bibliography management program (EndNote 20; Clarivate Analytics, Inc), we removed ineligible articles and duplicate references using the Bramer method of deduplication.
In case of discrepancies, full text of the articles was reviewed. Any disagreements between the 2 reviewers were resolved through discussion with the whole research team. Reasons for the excluding the articles are provided in Supplemental Table 3.
Risk of bias assessment
Two team members independently appraised the quality of selected studies using the Mixed Methods Appraisal Tool (MMAT) version 2018,
The MMAT uses 2 screening questions “clear research questions” and “collected data allow answering the research questions,” and 5 questions related to the study design (Supplemental Table 4).
We rated the 2 screening questions as “yes” or “no” depending on whether or not an appropriate answer was given to the MMAT questions and provided a rating “cannot assess” if the study provided inadequate or inaccurate information. The number of responses ranked as “yes” was summed to calculate the overall score.
We used Bayesian conversion methods for data extraction and generated summative statements from a meta-aggregation between the collected quantitative and narrative data.
For studies with quantitative data, we extracted the questions used in questionnaires and the results pertinent to information needs without mining statistical data, such as P values, percentages of correct answers, odds ratios, and hazard ratios.
To create compatibility between the quantitative and narrative data, we coded narrative data directly after extraction, whereas we converted quantitative data into a narrative data format before coding.
Two reviewers independently extracted all relevant data from included studies based on the following categories: bibliographic data (eg, first author, publication year, country), study aim, study design, data collection method, sample size, and population characteristics, including gender, race and ethnicity, and personal cancer history, ie, patients with cancer or previvors, genetic testing status, ie, individuals with a BRCA pathogenic variant or untested relatives. We also compared the extracted data based on the population characteristics mentioned earlier.
Data analysis
We conducted deductive content analysis to synthesize and compare the extracted quantitative and narrative data to answer the research questions.
After pilot testing and refinement of the initial abstraction tool, 2 reviewers extracted the reported informational needs from eligible studies and coded them independently using a software for narrative data analysis (MAXQDA 2020; VERBI GmbH). All differences in the coding between the 2 reviewers were discussed until an agreement was reached.
Results present the number of studies, the codes of each category and subcategory, their percentage relative to the total number of studies, and the total number of codes.
Results
Characteristics of the selected studies
Figure 1 shows the selection process of studies included in this review. The search strategy including 5 databases (n = 7335) and manual searching (n = 780) resulted in 8115 hits, of which 18 studies were included in this systematic review.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
Incorporating information regarding preimplantation genetic diagnosis into discussions concerning testing and risk management for BRCA1/2 mutations: a qualitative study of patient preferences.
Table 1 presents the characteristics of selected studies and Supplemental Table 5 presents the overall summary. The studies included a total of 1063 individuals (range = 12-204, mean = 59.1, SD = 56.4). Although we did not limit the search according to the publication year, most studies (88.9%) were published after 2011 and 27.8% were published in 2021. In terms of data collection methods, 9 studies only collected narrative data and 8 studies solely collected quantitative data. One study used a mixed-methods design to combine quantitative and narrative data. The majority of the studies were conducted in North America (55.6%) followed by Europe (27.8%). Eight studies (44.5%), including either US-based (16.7%)
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
did not report the race or ethnic background of the participants. Among the remaining 10 studies, 6 included only White participants, including participants of Ashkenazi Jewish, European, or French-Canadian backgrounds;
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Incorporating information regarding preimplantation genetic diagnosis into discussions concerning testing and risk management for BRCA1/2 mutations: a qualitative study of patient preferences.
Most studies (61.1%) included exclusively women and individuals with BRCA pathogenic variants (66.7%) rather than men (16.7%) and untested relatives (5.6%). More than half included mixed samples of patients with cancer and previvors.
Figure 1Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) 2020 flow diagram of searching and selection process.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Incorporating information regarding preimplantation genetic diagnosis into discussions concerning testing and risk management for BRCA1/2 mutations: a qualitative study of patient preferences.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
Supplemental Table 4 presents ratings for each methodological quality criterion. The overall mean quality score for the selected studies was 4.5 (SD = 1.07, range = 0 to 5) on the MMAT.
The risk of bias was moderately low, with 72%, 22%, and 6% of the studies meeting 100, ≥ 80, and 40% of the criteria, respectively. In the studies with a quantitative design, the most common risk of bias was a low response rate. No study was excluded based on quality ratings, because this review aimed to explore comprehensive informational from a wide range of studies.
Informational needs among individuals from families harboring pathogenic BRCA variants
We extracted 278 codes from the selected studies and grouped them into conceptual categories containing subcategories that described the scope and characteristics of the needed information. This process identified 9 distinct categories and 34 subcategories (Table 2). The most common categories of information needs were about risk-reducing strategies (94.4%), personalized risk assessment (66.7%), family implications of hereditary cancers (55.6%), decision-making for risk-reducing options (44.4%), psychological issues (38.9%), cascade genetic testing (33.3%), the role of BRCA genes in hereditary cancers (22.2%), social issues related to genetic testing (16.7%), and cancer treatment/diagnosis (5.6%). Overall, the ordering of information needs was similar to those of the primary studies. However, although the information about cascade testing was the third most frequently mentioned need, it was addressed by few studies.
Table 2Informational needs of individuals from families harboring pathogenic BRCA variants (N = 18 studies, 278 codes)
The percentage of codes in informational needs was determined by dividing the number of codes from each unique subcategory by the sum of all codes (N = 278).
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
Incorporating information regarding preimplantation genetic diagnosis into discussions concerning testing and risk management for BRCA1/2 mutations: a qualitative study of patient preferences.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
Incorporating information regarding preimplantation genetic diagnosis into discussions concerning testing and risk management for BRCA1/2 mutations: a qualitative study of patient preferences.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
Key messages for communicating information about BRCA1 and BRCA2 to women with breast or ovarian cancer: consensus across health professionals and service users.
‘When information is not enough’: A model for understanding BRCA-positive previvors’ information needs regarding hereditary breast and ovarian cancer risk.