ABSTRACT
In debates about genetic testing of children, as well as about disclosing unsolicited findings (UFs) of pediatric exome sequencing, respect for future autonomy should be regarded as a prima facie consideration for not taking steps that would entail denying the future adult the opportunity to decide for herself about what to know about her own genome. While the argument can be overridden when other, morally more weighty considerations are at stake, whether this is the case can only be determined in concrete cases. Importantly, when children grow into adolescents, respect for future autonomy will have to give way to respecting their emerging autonomy. When pediatric exome sequencing is done for complex conditions not involving developmental delay, respect for the child's future or emerging autonomy should be a primary consideration for those charged with deciding on behalf of the child. Building on what Emanuel and Emanuel have termed the 'deliberative model' of shared decision making, we argue that if parents fail to give these considerations their due, professionals should actively invite them to do so. Taking a directive stance may be needed in order to make sure that the future or emerging autonomy of the child are duly considered in the decision-making process, but also to help the parents and themselves to shape their respective roles as responsible care-givers.
Subject(s)
Decision Making, Shared , Exome , Adolescent , Child , Decision Making , Female , Genetic Testing , Humans , Male , ParentsABSTRACT
OBJECTIVE: Reproductive decision making for couples with hereditary breast and ovarian cancer (HBOC) is complex and can result in decisional conflict or regret. This study investigated couples' support needs and aimed to identify vulnerable couples. Ultimately, we should strive to develop a clear standard of care guideline regarding reproductive decision support. METHODS: Mixed methods were used for data collection. A focus group study was conducted among 18 couples (N = 35) with HBOC who had made a reproductive decision after reproductive counselling. Subsequently, 129 similar couples (N = 258) were invited to complete a cross-sectional survey based on the focus group study. RESULTS: Clinical and practical aspects of reproductive counselling were positively evaluated in the focus group study, although couples indicated a need for additional support with emotional and social concerns in which their relationship, social environment, and the way they picture their desired family were key elements. The survey was completed by 86 participants. Making a reproductive choice was experienced as (very) difficult by 43%, and 69% showed a need for additional support during decision making. Younger participants and those who opted for a natural pregnancy experienced more difficulty with reproductive decision making, and partners showed a higher need for psychological support than carriers. CONCLUSIONS: Couples with HBOC who need to make a reproductive decision have specific needs for guidance and support, of which the desired content and methods can vary. It is therefore important to identify vulnerable couples and to attune counselling to couples' needs.
Subject(s)
Breast Neoplasms/psychology , Carcinoma, Ovarian Epithelial/psychology , Conflict, Psychological , Decision Making , Marriage/psychology , Adult , Attitude to Health , Breast Neoplasms/genetics , Carcinoma, Ovarian Epithelial/genetics , Cross-Sectional Studies , Decision Support Techniques , Female , Heterozygote , Humans , Male , Patient Acceptance of Health Care/statistics & numerical data , PregnancyABSTRACT
Developments in prenatal testing allow the detection of more findings. SNP arrays in prenatal diagnosis (PND) can be analyzed at 0.5 Mb resolution detecting more clinically relevant anomalies, or at 5 Mb resolution. We investigated whether women had sufficient knowledge to make informed choices regarding the scope of their prenatal test that were consistent with their attitude. Pregnant women could choose between testing at 5 or at 0.5 Mb array. Consenting women (N = 69) received pre-test genetic counseling by phone and filled out the Measure of Informed Choice questionnaire designed for this study. Choices based on sufficient knowledge and consistent with attitude were considered informed. Sixty-two percent of the women made an adequately informed choice, based on sufficient knowledge and attitude-consistent with their choice of microarray resolution. Women who made an informed choice, opted for 0.5 Mb array resolution more often. There were no differences between women making adequately informed or less informed choices regarding level of experienced anxiety or doubts. Over time on T0 and T1, anxiety and doubts significantly decreased. While previous studies demonstrated that knowledge is an important component in informed decision-making, this study underlines that a consistent attitude might be equally important for decision-making. We advocate more focus on attitude-consistency and deliberation as compared to only a strong focus on knowledge.
Subject(s)
Genetic Counseling/psychology , Genetic Testing/methods , Health Knowledge, Attitudes, Practice , Microarray Analysis , Prenatal Diagnosis/psychology , Adult , Anxiety/psychology , Decision Making , Female , Genetic Counseling/methods , Humans , Informed Consent/psychology , Pregnancy , Prenatal Diagnosis/methods , Surveys and QuestionnairesABSTRACT
STUDY QUESTION: To what extent are BRCA mutation carriers and their partners in the Netherlands aware about preimplantation genetic diagnosis (PGD) and prenatal diagnosis (PND) as reproductive options and what is their attitude towards these options? SUMMARY ANSWER: Awareness of PGD (66%) and PND (61%) among BRCA mutation carriers and their partners is relatively high and 80% and 26%, respectively, of BRCA carriers and their partners find offering PGD and PND for hereditary breast and ovarian cancer (HBOC) acceptable. WHAT IS KNOWN ALREADY: Internationally, awareness of PGD among persons with a genetic cancer predisposition appears to be relatively low (35%) and although acceptability is generally high (71%), only a small proportion of mutation carriers would consider using PGD (36%). However, for HBOC, there are no studies available that investigated the perspective of individuals with a confirmed BRCA1/2 mutation and their partners about PGD and PND including demographic and medical correlates of awareness and acceptability. STUDY DESIGN, SIZE, DURATION: A cross-sectional survey was completed by 191 participants between July 2012 and June 2013. Participants were recruited through patient organizations (88%) and the databases of two Clinical Genetics departments in the Netherlands (12%). PARTICIPANTS/MATERIALS, SETTING, METHODS: Male and female BRCA carriers and their partners completed an online survey, which assessed demographic and medical characteristics, and awareness, knowledge, acceptability and consideration of PGD and PND as main outcomes. Correlations between demographic and medical characteristics and the main outcomes were investigated. MAIN RESULTS AND ROLE OF CHANCE: The majority of respondents were female (87%), of reproductive age (86%) and about half reported a desire for a child in the future. About two-thirds (66%) were aware of PGD and 61% of PND for HBOC. PGD knowledge was moderate (5.5 on a 9-point scale) and acceptability of PGD and PND for HBOC was 80% and 26%, respectively. A minority would personally consider using PGD (39%) or PND (20%). Individuals with a higher educational level were more likely to be aware of PGD (P < 0.001) and PND (P < 0.001) and persons with a more immediate child wish were more often aware of PGD (P = 0.044) and had more knowledge about PGD (P = 0.001). PGD acceptability was positively associated with knowledge about PGD (P = 0.047), and PND acceptability was higher among partners in comparison to carriers (P = 0.001). Participants with a history of cancer and with a higher perceived seriousness of breast and ovarian cancer were more likely to consider using PGD (P = 0.003 and P < 0.001 respectively) or PND (P = 0.021 and P = 0.017 respectively). LIMITATIONS, REASONS FOR CAUTION: The response rate (23%) of participants invited by the clinical genetics departments was low, probably related to a simultaneous study that used a similar recruitment strategy within the same target group, which may have resulted in selection bias. Moreover, PGD knowledge was measured with an instrument that is not yet validated since to date such an instrument is not available in the literature. Finally, the cross-sectional design of this study limits us from drawing any causal conclusions. WIDER IMPLICATIONS OF THE FINDINGS: Improvement of information provision remains needed, in order to timely inform all couples with HBOC about the available reproductive options and enable them to make a balanced reproductive decision. This may limit the risk of negative psychological impact due to decisional conflict and possible regret. STUDY FUNDING/COMPETING INTEREST(S): The Dutch breast cancer foundation Stichting Pink Ribbon (grant number 2010.PS11.C74). None of the authors have competing interests to declare. TRIAL REGISTRATION NUMBER: Not applicable.
Subject(s)
BRCA1 Protein/genetics , Breast Neoplasms/genetics , Genetic Predisposition to Disease , Health Knowledge, Attitudes, Practice , Reproduction/physiology , Adult , Cross-Sectional Studies , Decision Making , Female , Genetic Testing , Humans , Male , Netherlands , Pregnancy , Preimplantation DiagnosisABSTRACT
Genomic microarray may detect susceptibility loci (SL) for neurodevelopmental disorders such as autism and epilepsy, with a yet unquantifiable risk for the fetus. The prenatal disclosure of susceptibility loci is a topic of much debate. Many health care professionals fear that reporting susceptibility loci may put a psychological burden on pregnant couples. It is our policy to disclose prenatal susceptibility loci as we recognize them as actionable for prospective parents. The aim of this report was to evaluate the psychological impact of disclosing a prenatal diagnosis of susceptibility loci. The psychological impact of disclosing susceptibility loci was evaluated in the first patients who received such results. Eight out of 15 women who had a susceptibility locus disclosed and four of their partners consented to share their experiences through a telephonic evaluation (n = 12). Follow-up time ranged from 3 to 15 months after their prenatal test result. The reporting of susceptibility loci was initially 'shocking' for five parents while the other seven felt 'worried'. Ten out of 12 participants indicated they would like to be informed about the susceptibility locus again, two were unsure. Most had no enduring worries. Participants unanimously indicated that pregnant couples should have an individualized pre-test choice about susceptibility loci (non)disclosure. We observed no negative psychological impact with the prenatal diagnosis and disclosure of SL on participants. A key factor in mitigating parental anxiety with SL disclosure appears to be post-test genetic counseling. Our report confirms that pregnant women and their partners prefer an individualized choice regarding the scope of prenatal testing.
Subject(s)
DNA Copy Number Variations , Disclosure , Genetic Counseling/psychology , Genetic Predisposition to Disease , Parents/psychology , Prenatal Diagnosis/psychology , Adult , Fear , Female , Fetus , Genetic Testing , Humans , Male , Pregnancy , Qualitative Research , Stress, Psychological , Young AdultABSTRACT
Genomic array detects more pathogenic chromosome aberrations than conventional karyotyping (CK), including genetic variants associated with a susceptibility for neurodevelopmental disorders; susceptibility loci (SL). Consensus regarding the scope of invasive prenatal diagnosis (PND) pregnant couples should be offered is lacking. This study examined pregnant couples' preferences, doubts and satisfaction regarding the scope of invasive PND. Eighty-two couples choosing prenatal screening (PNS) and 59 couples choosing invasive PND were offered a choice between 5 (comparable to CK) and 0.5 Mb resolution array analysis outcomes, the latter with or without reporting SL. A pre-test self-report questionnaire and post-test telephone interview assessed their choices in-depth. Actual (PND) and hypothetical (PNS) choices differed significantly (p < 0.001). Ninety-five percent of the couples in the PND group chose 0.5 Mb array, vs 69% in the PNS group. Seven percent of the PND group wished not to be informed of SL. Ninety percent was satisfied with their choice and wished to decide about the scope themselves. Pregnant couples wish to make their own choices regarding the scope of invasive PND. It therefore seems justified to offer them a choice in both the resolution of array and disclosure of SL.
Subject(s)
Aneuploidy , Decision Making , Genetic Testing , Prenatal Diagnosis/psychology , Adult , Female , Humans , Karyotyping , Male , Middle Aged , Oligonucleotide Array Sequence Analysis , Pregnancy , Risk , Surveys and QuestionnairesABSTRACT
STUDY QUESTION: How do couples with a BRCA1/2 mutation decide on preimplantation genetic diagnosis (PGD) and prenatal diagnosis (PND) for hereditary breast and ovarian cancer syndrome (HBOC)? SUMMARY ANSWER: BRCA couples primarily classify PGD and/or PND as reproductive options based on the perceived severity of HBOC and moral considerations, and consequently weigh the few important advantages of PGD against numerous smaller disadvantages. WHAT IS KNOWN ALREADY: Awareness of PGD is generally low among persons at high risk for hereditary cancers. Most persons with HBOC are in favour of offering PGD for BRCA1/2 mutations, although only a minority would consider this option for themselves. Studies exploring the motivations for using or refraining from PGD among well-informed BRCA carriers of reproductive age are lacking. We studied the reproductive decision-making process by interviewing a group of well-informed, reproductive aged couples carrying a BRCA1/2 mutation, regarding their decisional motives and considerations. STUDY DESIGN, SIZE, DURATION: This exploratory, qualitative study investigated the motives and considerations taken into account by couples with a BRCA1/2 mutation and who have received extensive counselling on PGD and PND and have made a well-informed decision regarding this option. Eighteen couples took part in focus group and dyadic interviews between January and September 2012. PARTICIPANTS/MATERIALS, SETTING, METHODS: Semi-structured focus groups were conducted containing two to four couples, assembled based on the reproductive method the couple had chosen: PGD (n = 6 couples) or conception without testing (n = 8 couples). Couples who had chosen PND for BRCA (n = 4) were interviewed dyadically. Two of the women, of whom one had chosen PND and the other had chosen no testing, had a history of breast cancer. MAIN RESULTS AND THE ROLE OF CHANCE: None of the couples who opted for PGD or conception without testing found the use of PND, with possible pregnancy termination, acceptable. PND users chose this method because of decisive, mainly practical reasons (natural conception, high chance of favourable outcome). Motives and considerations regarding PGD largely overlapped between PGD users, PND users and non-users, all mentioning some significant advantages (e.g. protecting the child and family from the mutation) and many smaller disadvantages (e.g. the necessity of in vitro fertilization (IVF), low chance of pregnancy by IVF/PGD). For female carriers, the safety of hormonal stimulation and the time required for PGD before undergoing preventive surgeries were important factors in the decision. Non-users expressed doubts about the moral justness of their decision afterwards and emphasized the impact the decision still had on their lives. LIMITATIONS, REASON FOR CAUTION: The interviewed couples were at different stages in their chosen trajectory, up to 3 years after completion. This may have led to recall bias of original motives and considerations. Couples who did not actively seek information about PGD were excluded. Therefore the results may not be readily generalizable to all BRCA couples. WIDER IMPLICATIONS OF THE FINDINGS: The perceived severity of HBOC and, for female carriers, the safety of hormonal stimulation and the time frames for PGD planning before preventive surgeries are essential items BRCA couples consider in reproductive decision-making. The emotional impact of this decision should not be underestimated; especially non-users may experience feelings of doubt or guilt up to several years afterwards. PGD counselling with tailored information addressing these items and decisional support in order to guarantee well-informed decision-making is needed. STUDY FUNDING/COMPETING INTEREST(S): This study was funded by the Dutch breast cancer foundation Stichting Pink Ribbon, grant number 2010.PS11.C74. None of the authors have competing interests to declare. TRIAL REGISTRATION NUMBER: Not applicable.
Subject(s)
Breast Neoplasms/genetics , Decision Making , Ovarian Neoplasms/genetics , Preimplantation Diagnosis , Prenatal Diagnosis , Adult , Female , Genes, BRCA1 , Genetic Testing , Humans , Mutation , Pregnancy , Young AdultABSTRACT
This study aims to give an overview of the number of prenatal tests for Huntington's disease (HD), test results, and pregnancy outcomes in the Netherlands between 1998 and 2008 and to compare them with available data from the period 1987 to 1997. A total of 126 couples underwent prenatal diagnosis (PND) on 216 foetuses: 185 (86%) direct tests and 31 (14%) exclusion tests. In 9% of direct tests the risk for the foetus was 25%. Four at-risk parents (4%) carried intermediate alleles. Ninety-one foetuses had CAG expansions ≥36% or 50% risk haplotypes: 75 (82%) were terminated for HD, 12 (13%) were carried to term; four pregnancies were miscarried, terminated for other reasons or lost to follow-up. Unaffected pregnancies (122 foetuses) resulted in the birth of 112 children. The estimated uptake of PND was 22% of CAG expansion carriers (≥36 repeats) at reproductive age. PND was used by two new subgroups: carriers of intermediate alleles and 50% at-risk persons opting for a direct prenatal test of the foetus. A significant number of HD expansion or 50% risk pregnancies were continued. Speculations were made on causative factors contributing to these continuations. Further research on these couples' motives is needed.
Subject(s)
Genetic Testing , Huntington Disease/diagnosis , Huntington Disease/genetics , Prenatal Diagnosis , Adult , Female , Genetic Counseling , Haplotypes , Heterozygote , Humans , Male , Middle Aged , Netherlands , Pregnancy , Pregnancy Outcome , Retrospective Studies , Risk , Trinucleotide Repeat ExpansionABSTRACT
PURPOSE: Prophylactic mastectomy (PM) has proven to be the most effective method to reduce the risk of breast cancer in high-risk women. The present study aimed to present and compare the attitudes towards PM among physicians in France, Germany, the Netherlands and the United Kingdom (UK). PATIENTS AND METHODS: An international sample of 1196 general practitioners (GPs) and 927 breast surgeons (BS) were surveyed using a mailed questionnaire. RESULTS: Only 30% of the French and 27% of the German GPs were of opinion that PM should be an option for an unaffected female BRCA1/2 mutation carrier, as compared to 85% and 92% of the GPs in the Netherlands and UK, respectively. Similarly, 78% of the French and 66% of the German BS reported a positive attitude towards PM, as compared to 100% and 97% of the BS in the Netherlands and UK, respectively. In the whole sample of GPs, a positive attitude towards PM was associated with country of residence, being female, and having more knowledge of breast/ovarian cancer genetics, while among BS there was a positive association with country of residence and having more knowledge of breast/ovarian cancer genetics as well, and, in addition, with a higher number of newly diagnosed breast cancer patients last year. CONCLUSION: These results demonstrated the international variations in the attitude towards PM among physicians. This might reflect that different policies are adopted to prevent breast cancer in women at-risk.
Subject(s)
Attitude of Health Personnel , Breast Neoplasms/prevention & control , Health Knowledge, Attitudes, Practice , Mastectomy/methods , Adult , BRCA1 Protein/genetics , BRCA2 Protein/genetics , Breast Neoplasms/genetics , Chi-Square Distribution , Cultural Characteristics , Europe , Female , Genetic Predisposition to Disease , Humans , Logistic Models , Middle Aged , Multivariate Analysis , Mutation , Residence Characteristics , Risk Assessment , Risk Factors , Sex Factors , Surveys and QuestionnairesABSTRACT
BACKGROUND Huntington's disease (HD) is an autosomal dominant neurodegenerative late onset disorder. This review of reproductive options aims to increase reproductive confidence and to prevent suffering in relation to family planning around HD and possibly other late onset neurodegenerative disorders. METHODS Selected relevant literature and own views and experiences as clinical geneticists, psychologists and ethicists have been used. RESULTS Possible options, with emphasis on prenatal diagnosis (PD) and preimplantation genetic diagnosis (PGD) to prevent the transmission of HD to the next generation, are described and discussed. They are formally presented in a decision tree, taking into account the presence or absence of a fully penetrant allele (FPA), a reduced penetrant allele (RPA) or an intermediate allele (IA). A table compares invasive and non-invasive PD and PGD. From a psychological perspective, the complex process of counselling and decision-making regarding reproductive options is discussed. Special attention is paid to the decision to avoid the transmission of the mutation and to the confrontation and coping of a mutation-free child growing up with a parent developing disease symptoms. From an ethical point of view, reflections on both PD and PGD are brought forward taking into account the difference between FPA, RPA and IA, direct testing or exclusion testing and taking into account the welfare of the child in the context of medically assisted reproduction. CONCLUSION Recommendations and suggestions for good clinical practice in the reproductive care for HD families are formulated.
Subject(s)
Huntington Disease/diagnosis , Huntington Disease/genetics , Preimplantation Diagnosis/ethics , Prenatal Diagnosis/ethics , Age of Onset , Decision Making , Humans , Huntington Disease/psychology , Mutation , Parents/psychology , Reproduction/geneticsABSTRACT
Individuals at 50% risk of Huntington's disease (HD) who prefer not to know their carrier status, might opt for exclusion prenatal diagnosis (ePND) or exclusion preimplantation genetic diagnosis (ePGD). This study aims to provide a better understanding of couples' motives for choosing ePND or ePND, and surveys couples' experiences in order to make recommendations for the improvement of counselling for exclusion testing. This qualitative retrospective interview study focussed on couples who underwent ePND or ePGD for HD in the period 1996-2010. Seventeen couples were included of which 13 had experienced ePND and 6 ePGD. Mean time-interval since exclusion-testing was 3.9 years. Couples' moral reservations regarding termination of pregnancy (TOP) or discarding healthy embryos were counterbalanced by the wish to protect their future child against HD. Seven couples had terminated a total of 11 pregnancies with a 50% HD risk, none showed regret. ePGD was used by couples who wanted to avoid (another) TOP. ePND and ePGD are acceptable reproductive options for a specific group of counsellees. To guarantee sound standards of care, it is imperative that candidate couples be given in-depth non-directive counselling about all possible scenarios, and adequate professional and psychological support prior to, during and after ePND/ePGD.
Subject(s)
Genetic Counseling , Huntington Disease/diagnosis , Preimplantation Diagnosis/methods , Prenatal Diagnosis/methods , Abortion, Induced/ethics , Abortion, Induced/psychology , Female , Humans , Huntington Disease/genetics , Huntington Disease/psychology , Male , Netherlands , Preimplantation Diagnosis/ethics , Preimplantation Diagnosis/psychology , Prenatal Diagnosis/ethics , Prenatal Diagnosis/psychologyABSTRACT
To date, little is known about the psychosocial aspects of preconception consultation (PCC) in primary care. PCC in primary care is appropriate for couples and individuals with a reproductive wish. In PCC, non-genetic and genetic risk factors may be identified. Focusing on non-genetic and genetic risk factors in PCC requires the use of different counselling strategies and tools in optimizing the outcome of pregnancy. Addressing lifestyle alterations requires directive counselling, whereas addressing increased genetic risk and its subsequent reproductive options requires non-directiveness. When an increased genetic risk is detected, couples should be informed about their possibilities for not passing on a disease allele. Depending upon the various modes of inheritance and reproductive options, couples may face a variety of psychosocial challenges. This paper aims to provide insights into the psychosocial impact of the genetic aspects of PCC by drawing upon literature and clinical experience in the Clinical Genetics department. Furthermore, this paper provides consideration for future developments regarding preconception genetic screening.
ABSTRACT
Huntington's disease (HD) is known to have a negative impact on family life. Offspring of HD patients may be exposed to adversity in childhood because of the parent's disease and its psychological consequences. BRCA1/2 hereditary breast and ovarian cancer (BRCA1/2) increases the risk for offspring of being exposed to parental disease or loss. Childhood adversity is associated with psychopathology and various other problems in later life. Adverse childhood experiences (ACEs) before age 16 were assessed in adults at 50% risk for HD (n = 74) or BRCA1/2 (n = 82) and in controls (n = 101), using the Negative Life Events Scale. Mean number and occurrence of ACEs were compared between groups. The odds of having experienced adversity in childhood were higher in HD offspring and BRCA1/2 offspring than in controls. HD offspring reported a higher mean number of ACEs than controls or BRCA1/2 offspring. In HD offspring, the prevalence of parental disease and parental dysfunction experienced before age 16 was higher than in controls. In BRCA1/2 offspring, the prevalence of parental loss before age 16 was higher than in controls. This study indicates that 53% of HD offspring and 45% of BRCA1/2 offspring are exposed to adversity in childhood or adolescence. The relevance of these findings for counseling in predictive testing programs, reproductive decision-making, and child rearing matters is discussed.
Subject(s)
Child of Impaired Parents/psychology , Genetic Predisposition to Disease/psychology , Hereditary Breast and Ovarian Cancer Syndrome/psychology , Huntington Disease/psychology , Adolescent , Adult , Aged , BRCA1 Protein/genetics , BRCA2 Protein/genetics , Case-Control Studies , Female , Hereditary Breast and Ovarian Cancer Syndrome/genetics , Humans , Huntington Disease/genetics , Life Change Events , Logistic Models , Male , Middle Aged , Parent-Child Relations , Risk Factors , Young AdultABSTRACT
In 2004 the NICE guidelines on familial breast cancer advised Health Care Professionals that they should not actively seek to identify women with a family history of breast cancer. We have carried out a review of the evidence base and a large scale questionnaire survey of health professionals in four European countries. There is overwhelming support amongst GPs and surgeons against the premise that that health care professionals should not be proactive in identifying patients at risk of familial breast cancer. This that suggest the time is right to overturn the NICE decision.
Subject(s)
Breast Neoplasms/genetics , Family Practice/standards , Breast Neoplasms/diagnosis , Female , Humans , Risk Assessment , Surveys and QuestionnairesABSTRACT
Duchenne muscular dystrophy (DMD) is the most common inherited neuromuscular disease. After identification of the mutation in the index patient, family members can be reliably investigated. Carriers should be informed about their risk of having offspring with the disease and about their own risk for cardiomyopathy for which regular cardiac surveillance is recommended. In a small country like the Netherlands with well-organized genetic services, one would expect that most DMD families are adequately informed about the above mentioned risks for carriers. We have investigated whether women at risk had been tested at a molecular level. In the national Duchenne/Becker database 311 DMD and 99 Becker muscular dystrophy (BMD) patients had been registered up to 1 July 2009. These patients were asked to give information about the number of sisters and maternal aunts of the DMD/BMD patient and anything that was known about their genetic status and that of the mother. This information was compared with the information known at the genetic laboratory. Thirty-five of 104 adult sisters/maternal aunts of DMD patients with a 50% risk of being a carrier and 45 of 148 adult women with a 4.3% risk because of germ line mosaicism for DMD had not been tested by DNA analysis. Our study indicates that about one third of the potential carriers have not been tested. Given the possible far-reaching clinical consequences of being a carrier, further studies are needed to investigate the reasons why potential female carriers have not been tested.
Subject(s)
Family , Genetic Testing , Heterozygote , Muscular Dystrophy, Duchenne/diagnosis , Muscular Dystrophy, Duchenne/genetics , Adolescent , Child , Child, Preschool , Dystrophin/genetics , Female , Humans , Mosaicism , Muscular Dystrophy, Duchenne/mortality , Mutation , Risk , Young AdultABSTRACT
Previous studies on the counsellees' perception of DNA test results did not clarify whether counsellees were asked about their recollections or interpretations, and focused only on patients' own risks and not on the likelihood that cancer is heritable in the family. We tested differences and correlations of four perception aspects: recollections and interpretations of both cancer risks and heredity likelihood. In a retrospective study, women tested for BRCA1/2 on average, 5 years ago, completed questionnaires about their perception. Participants had received an unclassified variant (n = 76), uninformative (n = 76) or pathogenic mutation (n = 51) result in BRCA1/2. Analyses included t-tests, correlations and structural equation modelling. The counsellees' perception showed to consist of four distinctive phenomena: recollections and interpretations of cancer risks and of heredity likelihood. This distinctiveness was suggested by significant differences between these perception variables. Moderate to strong correlations were found between these variables, suggesting that these differences between variables were consistent. The relationships between these variables were not influenced by actually communicated DNA test results, sociodemographics, medical and pedigree information, or framing of cancer risk questions. The largest differences between recollections and interpretations were found in the unclassified variant group and the smallest in uninformatives. Cancer risks and heredity likelihood correlated least in the pathogenic mutation group. Communication of ambiguous genetic information enlarged the differences. To understand the counsellees' perception of genetic counselling, researchers should study recollections and interpretations of cancer risks and heredity likelihood. Genetic counsellors should explicitly address the counsellees' recollections and interpretations, and be aware of possible inaccuracies.
Subject(s)
Breast Neoplasms , Genetic Counseling , Genetic Testing/statistics & numerical data , Mental Recall , Ovarian Neoplasms , Perception , Risk , Breast Neoplasms/genetics , Breast Neoplasms/psychology , Female , Genes, BRCA1 , Genes, BRCA2 , Humans , Middle Aged , Models, Theoretical , Ovarian Neoplasms/genetics , Ovarian Neoplasms/psychology , Retrospective Studies , Surveys and QuestionnairesABSTRACT
BACKGROUND: Preconception carrier screening for hemoglobinopathies (HbPs) is debated in the Netherlands. OBJECTIVES: Intentions to participate in preconception carrier screening for HbPs as well as informed reproductive options were assessed in 109 Turkish female immigrants. METHOD: Participants completed a structured questionnaire. RESULTS: 83.5% of 109 Turkish female immigrants intended to participate in preconception carrier screening. Intention to participate was related to the desire to reduce uncertainty about having offspring affected by HbPs, but not with socio-demographic variables, risk-estimation and worrying. If the tests concerning carrier status for HbPs were confirmative for both partners, 36.3% (n = 33) of the women with the intention of preconception carrier screening would refrain from getting children of their own, including 14.3% (n = 13) opting for adoption, 37.4% (n = 34) would decide to become pregnant and to opt for prenatal testing on HbPs. Finally, among 37.4% of the women opting for prenatal testing, 30.3% (n = 10) would terminate an affected pregnancy, 18.2% (n = 6) not and 51.5% (n = 17) could not decide (1 missing value). CONCLUSION: A large majority of Turkish female immigrants would participate in preconception carrier screening for HbPs.
Subject(s)
Emigrants and Immigrants , Genetic Carrier Screening , Genetic Testing , Hemoglobinopathies/genetics , Patient Participation , Preconception Care , Adolescent , Adult , Attitude to Health , Family Characteristics , Female , Hemoglobinopathies/diagnosis , Hemoglobinopathies/ethnology , Humans , Mass Screening , Netherlands/epidemiology , Pregnancy , Prenatal Diagnosis , Surveys and Questionnaires , Turkey/ethnology , Young AdultABSTRACT
A decade of genetic counseling of frontotemporal dementia (FTD) affected families has generated two important observations. First, the uptake rate for presymptomatic testing for FTD is low in our department of Clinical Genetics at the Erasmus Medical Center in the Netherlands. Second, FTD at-risk counselees reported substantial familial opposition to genetic testing, which is distinct from the attitude in Huntington Disease affected families. We hypothesize that the low acceptance for FTD genetic counseling is consequential to the familial opposition and explain this within the theoretical framework of separation-individuation. Furthermore, we hypothesize that separation-individuation problems do not similarly influence the acceptance of HD genetic counseling, due to the educative role of the well-organised patient organization for HD in the Netherlands. We offer counseling recommendations that serve to facilitate the individuation of the counselee with respect to the FTD genetic test.
Subject(s)
Dementia/genetics , Family/psychology , Genetic Counseling , Genetic Testing/psychology , Humans , NetherlandsABSTRACT
BACKGROUND: The present study aimed to assess predictors of distress after 'prophylactic mastectomy (PM) and salpingo-ovariectomy (PSO), in order to enable the early identification of patients who could benefit from psychological support. PATIENTS AND METHODS: General distress and cancer-related distress were assessed in 82 women at increased risk of hereditary breast and/or ovarian cancer undergoing PM and/or PSO, before and 6 and 12 months after prophylactic surgery. Neurotic lability and coping were assessed before surgery. RESULTS: Cancer-related distress and general distress at both follow-up moments were best explained by the level of cancer-related and general distress at baseline. Being a mutation carrier was predictive of increased cancer-related distress at 6-month follow-up (but not at 12 months), and of lower general distress 12 months after prophylactic surgery. Also, coping by having comforting thoughts was predictive of less cancer-related distress at 6-month follow-up. CONCLUSIONS: Genetically predisposed women who are at risk of post-surgical distress can be identified using one or more of the predictors found in this study. Exploration of and/or attention to cancer-related distress and coping style before prophylactic surgery may help physicians and psychosocial workers to identify women who might benefit from additional post-surgical support.