Changes in psychological distress after cancer genetic counselling: a comparison of affected and unaffected women

How risk is perceived, constructed and interpreted by clients in clinical genetics, and the effects on decision making: systematic review

As an individual's understanding of their genetic risk may influence risk management decisions, it is important to understand the ways in which risk is constructed and interpreted. We systematically reviewed the literature, undertaking a narrative synthesis of 59 studies presenting data on the ways in which individuals perceive, construct and interpret their risk, and the subsequent effects. While most studies assessed perceived risk quantitatively, the combined evidence suggests individuals find risk difficult to accurately quantify, with a tendency to overestimate. Rather than being a stand-alone concept, risk is something lived and experienced and the process of constructing risk is complex and influenced by many factors. While evidence of the effects of perceived risk is limited and inconsistent, there is some evidence to suggest high risk estimations may adversely affect health and lead to inappropriate uptake of medical surveillance and preventative measures by some individuals. A more focused approach to research is needed with greater exploration of the ways in which risk is constructed, along with the development of stronger theoretical models, to facilitate effective and patient-centered counseling strategies.

Psychological impact of screening for type 2 diabetes: controlled trial and comparative study embedded in the ADDITION (Cambridge) randomised controlled trial

OBJECTIVE

To quantify the psychological impact of primary care based stepwise screening for type 2 diabetes.

DESIGN

Controlled trial and comparative study embedded in a randomised controlled trial.

SETTING

15 practices (10 screening, five control) in the ADDITION (Cambridge) trial in the east of England.

PARTICIPANTS

7380 adults (aged 40-69) in the top fourth for risk of having undiagnosed type 2 diabetes (6416 invited for screening, 964 controls).

INTERVENTIONS

Invited for screening for type 2 diabetes or not invited (controls), incorporating a comparative study of subgroups of screening attenders. Attenders completed questionnaires after a random blood glucose test and at 3-6 months and 12-15 months later. Controls were sent questionnaires at corresponding time points. Non-attenders were sent questionnaires at 3-6 months and 12-15 months.

MAIN OUTCOME MEASURES

State anxiety (Spielberger state anxiety inventory), anxiety and depression (hospital anxiety and depression scale), worry about diabetes, and self rated health.

RESULTS

No significant differences were found between the screening and control participants at any time-for example, difference in means (95% confidence intervals) for state anxiety after the initial blood glucose test was -0.53, -2.60 to 1.54, at 3-6 months was 1.51 (-0.17 to 3.20), and at 12-15 months was 0.57, -1.11 to 2.24. After the initial test, compared with participants who screened negative, those who screened positive reported significantly poorer general health (difference in means -0.19, -0.25 to -0.13), higher state anxiety (0.93, -0.02 to 1.88), higher depression (0.32, 0.08 to 0.56), and higher worry about diabetes (0.25, 0.09 to 0.41), although effect sizes were small. Small but significant trends were found for self rated health across the screening subgroups at 3-6 months (P=0.047) and for worry about diabetes across the screen negative groups at 3-6 months and 12-15 months (P=0.001).

CONCLUSIONS

Screening for type 2 diabetes has limited psychological impact on patients. Implementing a national screening programme based on the stepwise screening procedure used in the ADDITION (Cambridge) trial is unlikely to have significant consequences for patients' psychological health.

TRIAL REGISTRATION

Current Controlled Trials ISRCTN99175498 [controlled-trials.com].

Cancer genetic risk assessment for individuals at risk of familial breast cancer

BACKGROUND

The recognition of an inherited component to breast cancer has led to an increase in demand for information, reassurance, and genetic testing, resulting in the creation of genetics clinics for familial cancer. The first step for patients referred to a cancer genetic clinic is a risk assessment.

OBJECTIVES

To evaluate the impact of cancer genetic risk assessment services on patients at risk of familial breast cancer.

SEARCH STRATEGY

The specialised register maintained by the Cochrane Breast Cancer Group was searched. We also searched MEDLINE, EMBASE, CINAHL, PsycLIT, CENTRAL, DARE, ASSIA, Web of Science, SIGLE and LILACS. The searches covered the period 1985 to February 2005. We also hand-searched relevant journals.

SELECTION CRITERIA

Trials looking at interventions for cancer genetic risk assessment delivery for familial breast cancer were considered for inclusion. Trials assessed outcomes such as understanding of risk, satisfaction and psychological well-being. Studies were excluded if they concerned cancers other than breast cancer or if participants were not at risk of breast cancer. Trials concerning the provision of information or education were also excluded as it was intended to review these separately. Participants could be individuals of any age or gender, with or without a known BRCA mutation, but without a previous history of breast cancer or any other serious illness.

DATA COLLECTION AND ANALYSIS

Two authors independently assessed trial quality and extracted data. Additional information was sought from investigators as necessary. Due to the heterogeneity of both the interventions and outcomes, data were analysed descriptively.

MAIN RESULTS

Fifty-eight papers were identified as relevant to the review, 54 of these were subsequently excluded. The three included trials (pertaining to five papers), provide data on 1251 participants and assessed the impact of cancer genetic risk assessment on outcomes including perceived risk, and psychological distress. This review suggests that cancer genetic risk assessment services help to reduce distress, improve the accuracy of the perceived risk of, and increase knowledge about, breast cancer and genetics. The health professional delivering the risk assessment does not appear to have a significant impact on these outcomes.

AUTHORS' CONCLUSIONS

This review found favourable outcomes for patients' risk assessment for familial breast cancer. However, there were too few papers to make any significant conclusions about how best to deliver cancer genetic risk assessment services. Further research is needed assessing the best means of delivering cancer risk assessment, by different health professionals, in different ways and in alternative locations.

Knowledge and expectations of women undergoing cancer genetic risk assessment: a qualitative analysis of free-text questionnaire comments

Individuals undergoing cancer genetic risk assessment have been found to have a poor understanding of the process, which may affect how well they cope with learning their risk. This paper reports free-text data from questionnaires completed by women undergoing a randomised controlled trial of a psychological intervention. Of the 268 women undergoing genetic assessment for familial breast/ovarian cancer risk who were invited to take part in the trial, 157 women returned research questionnaires. Of these, 97 women provided free-text comments upon referral to a cancer genetics clinic, 62 provided comments whilst waiting for risk information (average, moderate or high), and 36 women provided comments following notification of risk. This paper reports a thematic analysis of the free-text data. Themes reflected individuals' poor knowledge and uncertainty about genetic risk assessment. How well individuals responded to learning their risk depended upon whether expectations had been met. Regardless of risk, individuals undergoing cancer genetic risk assessment are likely to benefit from increased information about its process and timescales, and access to increased psychological support. Free-text comments can provide valuable data about individuals' expectations and knowledge of genetics services.

Improving service evaluation in clinical genetics: identifying effects of genetic diseases on individuals and families

Outcome measurement in clinical genetics is challenging. Outcome attributes used currently have been developed by service providers or adapted from measures used in other areas of healthcare. Many of the 'patients' in clinical genetics are healthy but at risk of developing or transmitting a condition. Usually no pharmacological or surgical treatment is offered, although information-giving is an objective of most consultations. We argue that services should be evaluated on the basis of how well they alleviate the effects of disease, from a patient perspective. This paper describes a qualitative study using seven focus groups with health professionals, patients and patient representatives. Social and emotional effects of genetics diseases were identified. Some differences emerged between the effects identified by health professionals and those identified by patients. These findings will be used to inform the evaluation of existing outcome measures and develop robust measures of outcome for clinical genetics services.

Attitudes of genetic clinicians in Wales to the future development of cancer genetics services

RATIONALE

Cancer genetics is one of the fastest-growing areas of clinical genetics and it is imperative to identify how services should be organized and delivered in the future.

METHODS

A qualitative study utilizing focus group methodology which explored the attitudes of clinicians working in the Medical Genetics Service for Wales to a number of possible models for future service delivery.

RESULTS

There was no consensus for any particular model. Greater involvement of primary care practitioners is anticipated, but this requires investment in information, education and professional development initiatives. Self-referrals were not encouraged, though the promotion of genetic literacy amongst the general population was supported, particularly in conjunction with pharmacists.

CONCLUSION

As demand for cancer genetics services continues to increase, some consensus about the future delivery of such services is necessary. Consultation with other stakeholder groups, especially primary care practitioners and patients, should also contribute to service planning.

Decision aids for familial breast cancer: exploring women's views using focus groups

BACKGROUND

There is increasing need for accessible information about familial breast cancer for those facing complex decisions around genetic testing, screening and treatment. Information currently includes leaflets and computerized decision aids, offering interactive interfaces to clarify complex choices.

OBJECTIVE

Exploration of users' views and reactions to three decision aids for genetic testing for breast cancer using focus groups.

SETTING

A regional cancer genetics service in the UK.

PARTICIPANTS

Women over 18 years of age who had been referred to Cancer Genetics Service for Wales (CGSW) and had received a risk assessment for familial breast cancer.

METHODS

Qualitative study involving one pilot and six extended focus groups with 39 women at high, moderate and population risk. Two CD-ROMs and one paper-based aid evaluated for: clarity of presentation, ease of handling, emotive response, increased knowledge and greater informed choice.

RESULTS

Women reported variable preferences for different types of decision aids and mixed emotions, indicating the sensitivity of raising issues in decision support tools, lack of consensus over the most appropriate aid and no systematic differences between risk groups. Women remarked that aids increased their knowledge, particularly about breast cancer genes and risk and wanted a decision aid designed within the context of the NHS, in both paper-based and CD-ROM formats from an authoritative source. Mixed views about presentation styles suggest decision aids would be most effective with a user-selected range of formats.

CONCLUSIONS

Decision aid development should be informed by users and should meet the needs of those concerned about their risk of breast cancer in the UK. Without such aids, patients will continue to search for information from a variety of sources of varying quality.

Genetic nurse counsellors can be an acceptable and cost-effective alternative to clinical geneticists for breast cancer risk genetic counselling. Evidence from two parallel randomised controlled equivalence trials

This study compared genetic nurse counsellors with standard services for breast cancer genetic risk counselling services in two regional genetics centres, in Grampian region, North East Scotland and in Cardiff, Wales. Women referred for genetic counselling were randomised to an initial genetic counselling appointment with either a genetic nurse counsellor (intervention) or a clinical geneticist (current service, control). Participants completed postal questionnaires before, immediately after the counselling episode and 6 months later to assess anxiety, general health status, perceived risk and satisfaction. A parallel economic evaluation explored factors influencing cost-effectiveness. The two concurrent randomised controlled equivalence trials were conducted and analysed separately. In the Grampian trial, 289 patients (193 intervention, 96 control) and in the Wales trial 297 patients (197 intervention and 100 control) returned a baseline questionnaire and attended their appointment. Analysis suggested at least likely equivalence in anxiety (the primary outcome) between the two arms of the trials. The cost per counselling episode was 11.54 UK pounds less for nurse-based care in the Grampian trial and 12.50 UK pounds more for nurse-based care in Cardiff. The costs were sensitive to the grade of doctor (notionally) replaced and the extent of consultant supervision required by the nurse. In conclusion, care based on genetic nurse counsellors was not significantly different from conventional cancer genetic services in both trial locations.

A literature review of the psychological impact of genetic testing on breast cancer patients

OBJECTIVE

Easier access and increased awareness results in more referral for genetic testing for hereditary breast cancer in healthy at-risk women and breast cancer patients. To investigate the psychological impact of genetic testing on breast cancer patients, literature pertaining to this group was reviewed.

METHOD

Medline and PsychInfo databases were searched over the period 1995-2004 for studies aimed at breast cancer patients referred for genetic testing. Qualitative and quantitative psychological outcome measures were identified.

RESULTS

Eight papers were identified focusing on women affected by breast cancer and undergoing genetic counseling and DNA testing.

CONCLUSION

Genetic testing does not lead to an increase in psychological distress in breast cancer patients. However, a recent breast cancer diagnosis adds to general and cancer-specific distress prior to genetic counseling and after DNA test disclosure.

PRACTICE IMPLICATIONS

Clinicians need to be aware of possible high psychological distress and additional counseling needs of recently diagnosed breast cancer patients taking part in genetic testing. Further research should focus on patients who decline genetic counseling or receive an inconclusive test result, including age upon and time since diagnosis.

Psychological impact of genetic counseling for familial cancer: a systematic review and meta-analysis

BACKGROUND

Identification of a genetic basis underlying certain types of cancer has led to an increase in demand for genetic counseling about individual risks of the disease. We conducted a systematic review of the literature to determine the quality and strength of evidence relating to psychological outcomes of genetic counseling for familial cancer.

METHODS

Six electronic databases were searched to identify controlled trials and prospective studies that examined the effect of genetic counseling on risk perception, knowledge, anxiety, cancer-specific worry, depression, and cancer surveillance. Twenty-one studies from 25 papers met inclusion criteria, including five controlled trials and 16 prospective studies. Analysis of each outcome was stratified by short-term (</=1 month) and long-term (>/=3 months) follow-up. Trial evidence was assessed with standardized differences of the means at follow-up between intervention and comparison groups, and these data were pooled by use of random-effects meta-analysis.

RESULTS

Meta-analysis of controlled trials showed that genetic counseling improved knowledge of cancer genetics (pooled short-term difference=0.70 U, 95% confidence interval (CI)=0.15 to 1.26 U) but did not alter the level of perceived risk (pooled short-term difference=-0.10 U, 95% CI=-0.23-0.04 U). Prospective studies reported improvements in the accuracy of perceived risk. No effect was observed in controlled trials on general anxiety (pooled long-term effect=0.05 U, 95% CI=-0.21-0.31 U) or cancer-specific worry (pooled long-term difference=-0.14 U, 95% CI=-0.35-0.06 U), although several prospective studies demonstrated short-term reductions in these outcomes. Few studies examined cancer surveillance behaviors, and no studies attempted to measure informed choice.

CONCLUSIONS

Genetic counseling for familial cancer is associated with improvement in knowledge but does not have an adverse effect on affective outcomes. We urge further investigation of these findings through well-designed, well-reported, randomized controlled trials with suitable comparison groups and additional outcome measures [J Natl Cancer Inst 2004; 96:122-33].

Quality of Life and its Relation to Cancer-Related Stress in Women of Families with Hereditary Cancer without Demonstrated Mutation

BACKGROUND

Although quality of life (QoL) and mental distress in women belonging to familial cancer families have been studied, little is known on these matters in women with absence of demonstrated mutations. The aim of this study was to examine QoL and cancer-related distress in such women.

METHODS

About 330 women at risk for familial cancers in the absence of demonstrated mutations were invited to the study. About 239 women (72%) (risk group) completed the Short Form 12 (SF-12) and the Impact of Event Scale (IES). The SF-12-findings were compared to the age-adjusted findings from the general female population (controls).

RESULTS

The risk group had significantly better physical QoL than controls, while no significant difference was found for mental QoL. Within the risk group the type of familial cancer did not make a significant difference in QoL, but to have a father with cancer or a deceased parent, was associated with increased risk of being a case with low QoL. Mental QoL showed moderate correlation with cancer-related distress.

CONCLUSIONS

Women belonging to familial cancer families in the absence of demonstrated mutations had at least as good QoL as controls in spite of living with a permanent cancer-related threat.

Applying a cognitive behavioral model of health anxiety in a cancer genetics service

A cognitive-behavioral model of health anxiety was used to investigate reactions to genetic counseling for cancer. Participants (N = 218) were asked to complete a questionnaire beforehand and 6 months later. There was an overall decrease in levels of cancer-related anxiety, although 24% of participants showed increased cancer-related anxiety at follow-up. People who had a general tendency to worry about their health reported more cancer-related anxiety than those who did not at both time points. This health-anxious group also showed a postcounseling anxiety reduction, whereas the others showed no significant change. Participants with breast or ovarian cancer in their family were more anxious than participants with colon cancer in their family. Preexisting beliefs were significant predictors of anxiety, consistent with a cognitive-behavioral approach.

Estimated prevalence of hereditary cancers and the need for surveillance in a Norwegian county, Telemark

OBJECTIVE

The aim of the study was to estimate the prevalence of hereditary cancers and the need for surveillance in Telemark county, Norway.

MATERIAL AND METHODS

All persons attending the Norwegian Colorectal Cancer Prevention (NORCCAP) trial in Telemark were interviewed about cases of cancer in the family. Diagnoses were verified, pedigrees constructed and families classified according to preset criteria aiming at identifying hereditary cancer. Mutation analyses were performed in kindreds at risk for breast cancers when possible. Immunohistochemistry of tumors in assumed inherited colorectal cancer families was undertaken.

RESULTS

The screening examination was attended by 7,224 persons among whom 2,866 had cancer in the family. Of these, 2,479 had no suspicion of any known inherited cancer syndrome. Family information questionnaires were mailed to 387 persons and returned by 191. Sixty-four of these 191 met the clinical criteria for familial cancer by family history after verification of diagnoses. Observed prevalences for being at risk for hereditary breast and breast-ovarian cancer (HBOC) or hereditary non-polyposis colorectal cancer (HNPCC) were 2.8 per thousand and 0.77 per thousand, respectively.

CONCLUSIONS

The number of colonoscopies and mammograms obtained per year serving those who needed them was limited and reduced by clinical genetic work-up from 2,866 with a family history of cancer to 64 proven cases. Continued surveillance of an unnecessarily high number leads to unjustified cancer worry, is costly and uses up health-care facilities. Genetic work-up is a one-time job that reduces input numbers to surveillance programs, provides a starting-point for mutation testing and is economically cost beneficial if inherited cancers are prevented or cured by the health-care programs offered.

BRCA1/2 testing in hereditary breast and ovarian cancer families III: Risk perception and screening

This study aimed to ascertain whether cancer risk perception changed following the offer and subsequent receipt of BRCA1/2 results and to evaluate breast and ovarian screening practices in testers and non-testers. Members of thirteen HBOC families were offered BRCA1/2 testing for a known family mutation. Perceived risk for developing breast cancer, ovarian cancer or for carrying the familial BRCA1/2 mutation, was assessed at baseline and again at 6-9 months following the receipt of test results. Breast and ovarian cancer screening data were obtained at both time-points. A total of 138 women participated and 120 (87%) chose to be tested for a known familial mutation. Twenty-eight women (24%) were identified as carriers and their perceived ovarian cancer risk and their perception of being a mutation carrier increased (P = 0.01 for both). Those testing negatives had a significant decrease in all dimensions of risk perception (P < 0.01). Regression analysis showed test results to be strong predictors of follow-up risk perception (P = 0.001), however, they were not predictors of screening practices at follow-up. Testers were more likely to have completed a clinical breast exam following testing than decliners. Mammography was positively associated with baseline adherence, age, and intrusive thoughts. Ovarian cancer worries only predicted pelvic ultrasound screening post-testing. Baseline practices and psychological factors appear to be stronger predictors of health behavior than test results.

Referrals of patients to colorectal cancer genetics services in south-east Scotland

The discovery that genetic factors are involved in the aetiology of colorectal cancer, has prompted many relatives of affected individuals to seek genetic counselling and screening. This paper describes the demand for genetic services by families with colorectal cancer in south-east Scotland, their expectations and views of the service offered. The annual referral rate over the 21-month study period, for patients with a family history of colorectal cancer, was 0.11 per 1000 patients on general practitioner lists. This is one third of the rate for patients with a family history of breast cancer and in comparison with the breast cancer group, relatives of colorectal cancer patients were significantly older and less socially deprived. Approximately one third were referred via a hospital specialist unit. One hundred patients were included in the study. Mean (+/- standard deviation) age was 43 (+/- 10.7 years), 75 were female and 31 were self referrals. Before the consultation, almost half the patients had an inflated perception of their risk and there was little change at follow-up. There was an improvement in objective understanding after counselling which was sustained up to 6 months but only two thirds remembered their objective risk accurately. Most patients were satisfied with the consultation. Our findings suggest the need to educate individuals, in particular men, younger people and the more socially deprived, about the relevance of a family history of colorectal cancer and to facilitate patients' comprehension of their risk status.

Psychological distress in women at risk of hereditary breast/ovarian or HNPCC cancers in the absence of demonstrated mutations

AIM

To examine psychological distress in women at risk of familial breast-ovarian cancer (FBOC) or hereditary non-polyposis colorectal cancer (HNPCC) with absence of demonstrated mutations in the family (unknown mutation).

MATERIALS AND METHODS

Two-hundred and fifty three consecutive women at risk of FBOC and 77 at risk of HNPCC and with no present or past history of cancer. They were aware of their risk and had received genetic counseling. Comparisons were made between these two groups, normal controls, and women who were identified to be BRCA1 mutation carriers. The questionnaires Beck Hopelessness Scale (BHS), General Health Questionnaire (GHQ-28), Hospital Anxiety and Depression Scale (HADS) and Impact of Event Scale (IES) were employed to assess psychological distress.

RESULTS

No significant differences concerning psychological distress were observed between women with FBOC and women with HNPCC. Compared to mutation carriers for BRCA1, the level of anxiety and depression was significantly higher in the FBOC group with absence of demonstrated mutation. Compared to normal controls, the level of anxiety was higher, while the level of depression was lower in the groups with unknown mutation.

CONCLUSIONS

Women in the absence of demonstrated mutations have higher anxiety and depression levels than women with known mutation-carrier status. Access to genetic testing may be of psychologically benefit to women at risk for FBOC or HNPCC.

Initial cancer genetic counseling consultation: change in counselees' cognitions and anxiety, and association with addressing their needs and preferences

The fulfillment of counselees' expectations in cancer genetic counseling and how this affects the outcome of counseling have received little attention so far. This study investigates how the initial consultation influences counselees' cognitions and anxiety, whether counselors address counselees' prior needs and preferences during the visit, and whether addressing needs is associated with a more positive outcome of the visit. One hundred twenty-eight affected and unaffected counselees from families with no known mutation, who were seen by one of fourteen counselors, participated. Pre- and post-visit questionnaires assessed correct knowledge about hereditary breast or colon cancer, perceived personal control (PPC), anxiety (STAI), risk perceptions, and (fulfillment of) needs (QUOTE-gene(ca)). Results demonstrated a pre- to post-visit significant increase in correct knowledge and PPC, and a significant decrease in STAI and risk perceptions. However, marked overestimation of risks persisted. Decrease in STAI and risk perceptions was significantly less pronounced in affected versus unaffected counselees. The majority of counselees were (very) satisfied about the extent to which their needs were addressed, albeit about one-fifth were not regarding emotional matters and explanations about their own cancer risk. Finally, the better counselees perceived their needs to be fulfilled, the significantly higher their PPC and the significantly lower their STAi scores were. Findings suggest that both unaffected and affected counselees should be counseled carefully. Also, a more effective service may be attained if counselors pay more attention to counselees' emotional needs and detail more inheritance and penetrance of mutated genes in relation to counselees' family history.

Surgical decisions made by 158 women with hereditary breast cancer aged <50 years

AIM

To establish the uptake of contralateral risk reducing mastectomy in women informed of their risks and options at time of diagnosis of their primary unilateral breast cancer.

METHODS

We have assessed the surgical choices of 70 women diagnosed with breast cancer <50 years as part of a family history surveillance program and fully informed about their contralateral risks and surgical options. We have compared this to women from other surgical clinics who were subsequently found to harbour a pathogenic BRCA1/2 mutation.

RESULTS

Sixty-five percent (13/20) of BRCA1/2 mutation carriers and 59% (n=20/34) of those at the highest level of risk pre-diagnosis (33+% lifetime risk) opted for contra-lateral mastectomy in the study sample. In contrast only 10% (n=9/88) women identified as mutation carriers from other clinics opted for such surgery.

CONCLUSIONS

We would suggest that women with a significant family history and therefore a high contra-lateral breast cancer risk, should have these risks and management options discussed at the time of diagnosis of breast cancer.

Development and validation of a Breast Cancer Genetic Counseling Knowledge Questionnaire

Women who undergo genetic counseling concerning their increased risk of developing breast cancer confront large quantities of complex information in a short period of time. Clinical reports have suggested that many women may not retain what they learned during counseling. A validated questionnaire to measure their knowledge, however, is lacking. In this study, we describe the development and validation of a questionnaire to assess knowledge of information typically included in genetic counseling for breast cancer. Items were empirically derived from detailed content analyses of actual genetic counseling sessions. The instrument's content validity was high, as evidenced by high levels of independent interrater agreement (0.93) on items. Subsequent data reduction and confirmatory factor analytic techniques yielded a highly reliable (alpha = 0.92) 27-item Breast Cancer Genetic Counseling Knowledge Questionnaire (BGKQ). Direct comparison of this questionnaire to a scale previously developed in the literature (BCHK; [Breast Cancer Res. Treat. 53 (1999) 69]) supported the utility of the new questionnaire for evaluation of knowledge after counseling. Compared to non-counseled groups (n = 45), women who had undergone genetic counseling (n = 28) scored significantly higher (P < 0.0001) on the BGKQ, but not on the other questionnaire, establishing the BGKQ's criterion validity. The BGKQ may, thus, provide a useful clinical and research tool for assessing knowledge of information provided during genetic counseling and exploring the potential impact of distress on knowledge, as well as the impact of knowledge on screening behaviors.

Accommodating risk: responses to BRCA1/2 genetic testing of women who have had cancer

The relationship between risk awareness and anxiety has been the subject of extensive theoretical debate and empirical research. Previous studies of women with a family history of hereditary breast and ovarian cancer suggest that both healthy at-risk women and former cancer patients report increased anxiety upon learning about their increased risks of developing these diseases. Indeed, anxiety about genetic risks has been reported as influencing decisions about DNA-testing and risk-reducing surgery on healthy breasts and ovaries. This qualitative study of women who had been treated for breast/ovarian cancer investigated their perceptions of, and reactions to, their genetic risks of developing further cancers following genetic testing (BRCA1/2 mutation searching). In-depth interviews were undertaken with 30 women (10 mutation carriers, 8 awaiting a result and 12 who received an inconclusive test result). Whilst the majority of women in all three groups adopted a fatalistic approach with regard to their future health and did not regard their genetic risks as a threat to self, a few reported heightened anxiety on learning they were at increased risk of developing a second primary cancer. The data suggest that affected women understand their genetic risks of cancer within the context of their previous disease experiences. It is observed that women's responses to their genetic risk are influenced by the degree to which they have accommodated their risk status in their biography following their diagnosis and treatment of cancer.

Using the Impact of Event Scale to Evaluate Psychological Response to Being a Phenylketonuria Gene Carrier

The birth of a child with phenylketonuria (PKU) is almost always a shock to the parents, who are faced with the realities of caring for a child with special needs and the need to cope with the realization that they are obligate carriers of the responsible gene. The Impact of Event Scale (IES) was used to assess the psychological impact of being a PKU gene carrier on 83 parents of children with PKU. IES scores decreased significantly from the time of initial diagnosis of PKU to the current time. The magnitude of the psychological impact did not correlate with the age of the parent, the number of years since the diagnosis of PKU, or the health or development of the child. As more tests become available for detecting the presence of disease-related genes, instruments such as the IES may prove useful in the evaluation of psychological responses to genetic information.

Assessment of genetic testing and related counseling services: current research and future directions

With the recent completion of the sequencing of the Human Genome, genetic testing will increasingly become available for a greater number of medical conditions, many of which are those that manifest in adulthood (e.g., various cancers, cardiovascular disease, diabetes) or for which little or no treatments are available (e.g., Alzheimer disease). Genetic services, defined here as those relating to genetic testing and counseling, will be with helping more individuals deal with medical information that affects their health directly, as opposed to affecting primarily the health of their offspring. This paper reviews the existing research in the genetic testing and counseling literature and presents an evaluation framework outlining the intended outcomes of genetic services. The purpose of this framework is to provide an overview of the potential outcomes of these services and highlight constructs for future research in this area. In addition, other issues that will affect the assessment of genetic services are raised, using examples from the existing literature. Ultimately, the goal of this paper is to highlight and suggest directions researchers can take to produce the information needed to guide genetic testing and counseling practice. Moreover, as genetic knowledge is increasingly applied towards the prevention and treatment of various common, chronic disease conditions, genetic information will have implications for providers outside of the traditional medical genetics realm, such as primary care providers and public health practitioners. A better understanding of the outcomes of genetic testing and counseling will provide a basis from which to ensure an appropriate application of genetic information by all those who eventually provide care and "genetic" services.

Short-term impact of cancer prevention and screening activities on quality of life

PURPOSE

There are few data on the short-term effects of participating in cancer prevention activities, undergoing genetic risk assessment, or having routine screening. The objective of this article is to systematically review existing research on short-term effects of prevention, genetic counseling and testing, and screening activities on quality of life.

METHODS

We conducted a MEDLINE search for original research studies that were published between January 1, 1985, and December 31, 2002, and conducted in North America or Western Europe. Data were abstracted and summarized using a standardized format.

RESULTS

We reviewed 210 publications. Most studies focused on psychological states (anxiety, depression), symptoms, or general health status. One hundred thirty-one studies used 51 previously validated noncancer instruments. Many researchers (12.6%) also added cancer-specific measures, such as perceived cancer risk or symptom indices. Only one study measured satisfaction or quality of provider-client communication. While one report examined lost workdays, no other economic consequences of short-term outcomes were evaluated. Among seven studies that assessed short-term outcomes preferences, only four specifically used time trade-off or linear rating scale methods. No study used standard gamble or willingness-to-pay methods. The overwhelming majority of research indicated that short-term effects were transient. Only two studies linked short-term effects to long-term cancer-related health behaviors such as repeat screening.

CONCLUSION

There is considerable heterogeneity in short-term outcome measurement. Clinicians need to be aware of potential for short-term, transient adverse effects. The impact of short-term experiences should to be linked to long-term health status and use of services.

Psychological impact of genetic counseling for familial cancer: a systematic review and meta-analysis

BACKGROUND

Identification of a genetic basis underlying certain types of cancer has led to an increase in demand for genetic counseling about individual risks of the disease. We conducted a systematic review of the literature to determine the quality and strength of evidence relating to psychological outcomes of genetic counseling for familial cancer.

METHODS

Six electronic databases were searched to identify controlled trials and prospective studies that examined the effect of genetic counseling on risk perception, knowledge, anxiety, cancer-specific worry, depression, and cancer surveillance. Twenty-one studies from 25 papers met inclusion criteria, including five controlled trials and 16 prospective studies. Analysis of each outcome was stratified by short-term (< or =1 month) and long-term (> or = 3 months) follow-up. Trial evidence was assessed with standardized differences of the means at follow-up between intervention and comparison groups, and these data were pooled by use of random-effects meta-analysis.

RESULTS

Meta-analysis of controlled trials showed that genetic counseling improved knowledge of cancer genetics (pooled short-term difference = 0.70 U, 95% confidence interval [CI] = 0.15 to 1.26 U) but did not alter the level of perceived risk (pooled short-term difference = -0.10 U, 95% CI = -0.23 to 0.04 U). Prospective studies reported improvements in the accuracy of perceived risk. No effect was observed in controlled trials on general anxiety (pooled long-term effect = 0.05 U, 95% CI = -0.21 to 0.31 U) or cancer-specific worry (pooled long-term difference = -0.14 U, 95% CI = -0.35 to 0.06 U), although several prospective studies demonstrated short-term reductions in these outcomes. Few studies examined cancer surveillance behaviors, and no studies attempted to measure informed choice.

CONCLUSIONS

Genetic counseling for familial cancer is associated with improvement in knowledge but does not have an adverse effect on affective outcomes. We urge further investigation of these findings through well-designed, well-reported, randomized controlled trials with suitable comparison groups and additional outcome measures.

Recent developments in ovarian cancer genetics

PURPOSE OF REVIEW

This review attempts to provide an update on recent research on inherited susceptibility to ovarian cancer. It covers articles mainly published in 2002 and 2003, with an emphasis on genetic counseling issues.

RECENT FINDINGS

The major areas on which recent reports have focused include: (1) an expanded understanding of the BRCA1 and BRCA2 mutation spectrum and the frequencies of deleterious alleles in various ethnic groups; (2) investigations on how information is best transmitted to high-risk family members via genetic counseling; (3) an analysis of patient management changes based on genotype results; (4) social issues surrounding predictive testing for breast/ovarian cancer genes, including health insurance and discrimination concerns; and (5) an investigation into gynecologists' knowledge of ovarian cancer genetics, and their ability to provide genetic counseling for ovarian cancer to their patients. Preliminary reports from scientific meetings that have not yet been published in peer-reviewed journals are also discussed.

SUMMARY

Recent developments in ovarian cancer genetics expand many of the areas that have been studied previously. A major focus of recent research has dealt with genetic counseling for families affected by hereditary breast and ovarian cancer.

BRCA1/2 testing in hereditary breast and ovarian cancer families: Effectiveness of problem-solving training as a counseling intervention

It remains uncertain whether members of hereditary breast and ovarian cancer (HBOC) families experience psychological distress with genetic testing and whether pre-test counseling can have a moderating effect on client well-being. One purpose of this study was to assess change in psychological well-being from baseline to 6-9 months follow-up and the effect of a problem-solving training (PST) intervention on psychological well-being. Two hundred and twelve members of 13 HBOC families were offered BRCA1/2 testing for a previously identified family mutation. Participants received education and were randomized to one of two counseling interventions; PST or client-centered counseling. Psychological well-being was assessed at baseline and again at 6-9 months following the receipt of test results, or at the equivalent time for those participants who chose not to undergo testing. Well-being was assessed using measures of depressive symptoms (CESD), intrusive thoughts (IES), cancer worries, and self-esteem. Comparisons were made between those who chose testing and those who did not as well as between those who received positive and negative test results. One hundred eighty one participants elected to undergo genetic testing (85%) and 47 of these (26%) were identified as BRCA1/2 mutation carriers. Breast and ovarian cancer worries decreased significantly (p = 0.007 and 0.008, respectively) in those who tested negative while there was no appreciable change in psychological well-being from baseline to follow-up in either those who tested positive or in non-testers. Among all participants, particularly testers, those randomized to PST had a greater reduction in depressive symptoms than those randomized to client-centered counseling (p < 0.05 and p = 0.02, respectively). Regardless of the decision to test, individuals with a personal history of cancer (n = 22) were more likely to have an increase in breast cancer worries compared to those who had never been diagnosed with cancer (p < 0.001). Results suggest that a problem-solving counseling intervention may help to enhance psychological well-being following testing and that a personal history of cancer may increase psychological distress associated with genetic testing.

Using the common sense model to understand perceived cancer risk in individuals testing for BRCA1/2 mutations

The common sense model posits that individuals' understanding of illness is based upon somatic symptoms and life experiences and thus may differ significantly from the biomedical view of illness. The current study used the common sense model to understand cancer risk perceptions in 99 individuals testing for BRCA1/2 mutations. Specifically, we examined change from post-counseling to post-result in (1) absolute risk (risk of developing cancer in one's lifetime) and (2) comparative risk (risk relative to the general population). Results indicated that absolute risk showed a trend such that those with a personal history of cancer receiving uninformative negative results reported decreased absolute risk. Further, individuals receiving uninformative negative results reported decreased comparative risk. Those with no personal cancer history receiving informative negative results did not decrease in risk over time nor did their risk differ from those with a personal cancer history, evidencing unrealistic pessimism regarding their risk of cancer. The reasons provided for individuals' risk perceptions could be classified in terms of attributes of the common sense model and included the: (1) causes of cancer (e.g. family history, mutation status); (2) control or cure of cancer through health behaviors and/or surgery; and (3) perceived timeline for developing cancer (e.g. time left in life to develop cancer). We conclude that key to developing interventions to improve understanding of cancer risk and promoting effective cancer control mechanisms is an understanding of the specific reasons underlying individuals' perceptions of cancer risk.

Cancer worry in women with hereditary risk factors for breast cancer

PURPOSE/OBJECTIVES

To investigate symptom-based cancer worry in women who are at hereditary risk for breast cancer, specifically levels of worry, correlations of cancer worry, perceived cancer risk, and clinical signs or symptoms of breast cancer, as well as predictors of cancer worry.

DESIGN

Cross-sectional, correlational.

SETTING

Primarily the United States.

SAMPLE

200 women, aged 18-80, with no personal history of cancer, who met at least one established criterion of hereditary breast cancer risk were recruited primarily from a mammography facility and cancer prevention clinics or via network sampling.

METHODS

Completion of the following self-report instruments: Thoughts About Cancer Scale and measures of clinical symptoms, perceived risk, and sample characteristics. Data analysis consisted of descriptive statistics, Pearson correlations, and binary logistic regression.

MAIN RESEARCH VARIABLES

Cancer worry, total clinical signs of cancer, perceived cancer risk, age, and family history.

FINDINGS

Participants sometimes worried about breast cancer but had more general breast cancer worry than worry based on perceived neutral or breast cancer-specific symptoms. Total clinical signs of breast cancer correlated significantly with cancer worry. Women aged 41-50 and those with more clinical signs of breast cancer were 3.76 and 1.49 times more likely to have high worry, respectively.

CONCLUSIONS

Moderate worry in high-risk women is not unusual. Total symptoms and younger age predict higher breast cancer worry, whereas perceived risk and family history do not.

IMPLICATIONS FOR NURSING

Counseling of young, high-risk women should include assessments of worry and clinical signs of breast cancer.

A randomised controlled trial of breast cancer genetics services in South East Scotland: psychological impact

This study compared the psychological impact of two models of breast cancer genetics services in South East Scotland. One hundred and seventy general practices were randomised to refer patients to the existing standard regional service or the novel community-based service. Participants completed postal questionnaires at baseline (n=373), 4 weeks (n=276) and 6 months (n=263) to assess perceived risk of breast cancer, subjective and objective understanding of genetics and screening issues, general psychological distress, cancer worry and health behaviours. For participants in both arms of the trial, there were improvements in subjective and objective understanding up to 4 weeks which were generally sustained up to 6 months. However, improvements in subjective understanding for the women at low risk of breast cancer (i.e. not at significantly increased risk) in the standard service arm did not reach statistical significance. Cancer worry was significantly reduced at 6 months for participants in both arms of the trial. The two models of cancer genetics services tested were generally comparable in terms of the participants' psychological outcomes. Therefore, decisions regarding the implementation of the novel community-based service should be based on the resources required and client satisfaction with the service.

Genetic counselling and the intention to undergo prophylactic mastectomy: effects of a breast cancer risk assessment

Scientific reports suggest that women at risk for familial breast cancer may benefit from prophylactic mastectomy. However, few data are available about how women decide upon this clinical option, and in particular, what role an objective risk assessment plays in this. The purpose of the present study is to assess whether this objective risk information provided in genetic counselling affects the intention for prophylactic mastectomy. Additionally, the (mediating) effects of breast cancer worry and perceived risk are investigated. A total of 241 women completed a questionnaire before and after receiving information about their familial lifetime breast cancer risk in a genetic counselling session. Path analysis showed that the objective risk information had a corrective effect on perceived risk (beta=0.38; P=0.0001), whereas the amount of breast cancer worry was not influenced by the counselling session. The objective risk information did not directly affect the intention for prophylactic mastectomy. The intention was influenced by perceived risk after counselling (beta=0.23; P=0.002), and by the precounselling levels of perceived risk (beta=0.27; P=0.00025) and breast cancer worry (beta=0.32; P=0.0001), that is, higher levels of perceived risk and breast cancer worry imply a stronger intention for prophylactic mastectomy. A personal history of breast cancer did not directly influence the intention for prophylactic mastectomy, but affected women who had undergone a mastectomy as surgical treatment were more positively inclined to have a prophylactic mastectomy than women who had had breast-conserving therapy. The impact of objective risk information on the intention for prophylactic mastectomy is limited and is mediated by perceived risk. Important determinants of the intention for prophylactic mastectomy were precounselling levels of breast cancer worry and perceived risk, suggesting that genetic counselling is only one event in the entire process of decision making. Therefore, interventions aimed at improving decision making on prophylactic mastectomy should explicitly address precounselling factors, such as personal beliefs and the psychological impact of the family medical history.

No news is (not necessarily) good news: impact of preliminary results for BRCA1 mutation searches

PURPOSE

Many women who have had breast or ovarian cancer who are undergoing tests for the presence of germline mutations in the genes will receive a result that is inconclusive. As this continuing uncertainty may have a detrimental effect on their psychological well-being and it is possible that such results will be misinterpreted as indicating that no mutation is present, studying their effect is important.

METHODS

Sixty-one women undergoing such tests completed questionnaires 2 weeks after their blood was taken and at 1 week and 6 months after receiving a preliminary "inconclusive" result, i.e., indicating that two thirds of the gene had been tested and no mutation had been found so far.

RESULTS

Perceived likelihood of having a mutation and perceptions of cancer risk significantly decreased after receipt of the interim result. There were no changes in levels of psychological distress and worry about cancer, in intentions to have mammograms, to carry out breast self-examination, or to have prophylactic surgery.

CONCLUSIONS

The continuing uncertainty does not seem to have increased distress; however, it is possible that the inconclusive result is being interpreted as a "good news" result, in view of the fact that perceptions of risk decrease after receipt of the result.