16 results on '"Vears, Danya"'
Search Results
2. Australian healthcare professionals' perspectives on the ethical and practical issues associated with genomic newborn screening.
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Cao, Michelle, Notini, Lauren, Ayres, Samantha, and Vears, Danya F.
- Abstract
Newborn bloodspot screening (NBS) is a successful public health initiative that seeks to identify serious, treatable medical conditions. The increasing use of genomic sequencing (GS) in a wide range of medical settings has reignited the discussion on whether GS can and should be integrated into NBS. Yet, the perspectives of healthcare professionals (HCPs) in Australia on the ethical and practical issues associated with the implementation of genomic newborn screening (GNBS) are underexplored. To address this, we conducted semi‐structured interviews with 16 Australian HCPs with clinical or policy experience in NBS and/or GS to explore their perspectives on the ethical, social, and practical issues raised by integrating GS into NBS. Interviews were analyzed using inductive content analysis. When asked whether GS should be incorporated into NBS, HCPs did not feel it was currently appropriate but there was a strong consensus it may be implemented within the next decade. However, HCPs had differing perspectives on what conditions should be included and how to best handle the volume of data generated from GNBS. Our findings have important implications for determining at what point and how genomics can be integrated into NBS. The differing views expressed amongst HCPs suggest that further research is needed to explore the reasons behind this. Importantly, our participants highlighted a potential role for genetic counselors in the implementation of GNBS on a larger scale by developing educational resources to facilitate obtaining informed consent and return of results. [ABSTRACT FROM AUTHOR]
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- 2023
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3. Navigating the uncertainties of next‐generation sequencing in the genetics clinic.
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Kuiper, Janneke M. L., Borry, Pascal, Vears, Danya F., Van Esch, Hilde, and Van Hoyweghen, Ine
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RESEARCH ,MEETINGS ,SEQUENCE analysis ,GENETICS ,NEGOTIATION ,UNCERTAINTY ,GENETIC testing ,INTERVIEWING ,FIELDWORK (Educational method) ,RESEARCH funding ,HEALTH care teams ,MEDICAL referrals ,INTERPROFESSIONAL relations ,GENOMICS ,EMPIRICAL research ,PATIENT-professional relations ,THEMATIC analysis - Abstract
This study explores the different manifestations and navigations of uncertainty in the practice of diagnostic next‐generation sequencing (NGS) testing. Drawing upon multi‐sited fieldwork conducted at a large Centre for Human Genetics in Belgium, we analyse how uncertainty takes shape and is managed in the different steps of the diagnostic process: starting from the testing offer, to the analysis in the lab, the multidisciplinary team meetings (MDTs) and ending with the consultation with the patient. Building on interviews with genetic healthcare professionals and their patients and observations in consultations and MDTs, our empirical work underlines the duality of uncertainty as both burdensome and productive. Building on the existing literature on uncertainty in medicine and NGS, our analysis shows the ontological politics at play in the everyday uncertainty work in this CHG. We show how the, at times, contrasting ways of dealing with uncertainty lead to friction but also result in constructive negotiation and collaboration between actors, making use of multiple types of evidence and expertise. By not only minimising but also sustaining or inviting uncertainty, genetic healthcare professionals are able to advance the practices around NGS in a way that matches their multidisciplinary understandings, considerations and more normative stances. [ABSTRACT FROM AUTHOR]
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- 2023
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4. Going home: Clinician perspectives on decision‐making in paediatric home mechanical ventilation.
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Jeffreys, Juliette, Rahman, Mayukh, Vears, Danya, and Massie, John
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ARTIFICIAL respiration ,PEDIATRIC nursing ,MEDICAL personnel ,DECISION making ,RESPIRATORY insufficiency ,SNOWBALL sampling - Abstract
Aim: Despite a recent increase in the use of ventilators in the home setting for children with chronic respiratory failure, there is currently no unified approach for clinical decision‐making for children requiring long‐term mechanical ventilation. The purpose of this study is to understand the clinician's perspective on decision‐making around home ventilation for children, and how home‐based care contributes to successful outcomes in this population. Methods: We recruited physicians and home ventilation nurses with at least 2 years' experience working in an Australian paediatric tertiary home ventilation service using professional networks and snowball sampling. Semi‐structured interviews were conducted by two researchers between February 2019 and June 2020. Interviews were audio‐recorded, transcribed, and analysed using inductive content analysis. Results: Twenty‐five individuals participated (17 physicians and 8 home ventilation nurses). Participants viewed themselves as impartial medical advocates in the decision‐making process, believing the decision to initiate or cease ventilation belonged to the child's family. While participants held the child's quality of life as the cornerstone of decision‐making, quality of life was subjective and family specific. Conclusion: These findings provide insight into how clinicians working with children with chronic respiratory insufficiency approach the decision to introduce home‐based ventilation. By understanding their role, strategies can be developed to assist them, leading to better outcomes for patients and families. Further research is needed to compare the perspectives of clinicians with the experience of ventilator‐assisted children and families in Australia. [ABSTRACT FROM AUTHOR]
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- 2023
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5. Moving from 'fully' to 'appropriately' informed consent in genomics: The PROMICE framework.
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Koplin, Julian J., Gyngell, Christopher, Savulescu, Julian, and Vears, Danya F.
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INFORMED consent (Medical law) ,GENOMICS ,AUTONOMY (Psychology) - Abstract
Genomic sequencing technologies (GS) pose novel challenges not seen in older genetic technologies, making traditional standards for fully informed consent difficult or impossible to meet. This is due to factors including the complexity of the test and the broad range of results it may identify. Meaningful informed consent is even more challenging to secure in contexts involving significant time constraints and emotional distress, such as when rapid genomic testing (RGS) is performed in neonatal intensive care units. In this article, we propose that informed consent matters not for its own sake, but because obtaining it furthers a range of morally important goals, such as promoting autonomy, well‐being, and trust in medicine. These goals form the basis of a new framework [PROmoting Morally Important Consent Ends (PROMICE)] for assessing the ethical appropriateness of various informed consent models. We illustrate this framework with two examples: (a) a tiered and layered consent model for obtaining consent for GS, and (b) consent for RGS in critically ill newborns. We conclude that appropriately—rather than fully—informed consent provides the correct standard for genomic medicine and research. [ABSTRACT FROM AUTHOR]
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- 2022
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6. A framework for reporting secondary and incidental findings in prenatal sequencing: When and for whom?
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Vears, Danya and Amor, David J.
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As the use of genomic sequencing (GS) in the prenatal setting becomes more widespread, laboratories and clinicians will be tasked with making decisions about whether to offer incidental and secondary findings to expectant parents and, if so, which ones. Unfortunately, few guidelines or position statements issued by professional bodies address the return of secondary findings specifically in the context of prenatal GS, nor do they offer clear guidance on whether, and which types of incidental findings should be reported. Laboratories and clinicians will also need to navigate other challenges, such as how to obtain sufficiently informed consent, workload burdens for both laboratories and clinicians, and funding. Here we discuss these, and other challenges associated with offering incidental and secondary findings in the context of prenatal GS. We outline existing guidelines for return of these findings, prenatally and in children. We review the existing literature on stakeholder perspectives on return of incidental and secondary findings and discuss the main practical and ethical challenges that require consideration. We then propose a framework to help guide decision‐making, suggesting a baseline routine analysis, with additional layers of analysis that could be offered, according to local laboratory policy, with additional opt‐in consent from the parents. Key points: What's already known about this topic? The use of genomic sequencing (GS) in the prenatal setting is becoming more widespread.Few guidelines or position statements from professional bodies address returning secondary findings in the context of prenatal GS. What does this review add? We summarize existing guidelines and literature on the topic.We discuss practical and ethical challenges that require consideration.We propose a framework to guide decision‐making, suggesting baseline routine analysis, with additional layers of analysis that could be offered, with opt‐in parental consent. [ABSTRACT FROM AUTHOR]
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- 2022
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7. Genetic health professionals' experiences returning results from diagnostic genomic sequencing to patients.
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Vears, Danya F., Sénécal, Karine, and Borry, Pascal
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Despite widespread use of genomic sequencing (GS) in clinical care, there has been little exploration of actual experiences of genetic health professionals (GHPs) using GS in clinical practice worldwide. To address this, semi‐structured interviews were conducted with 31 clinical geneticists and genetic counselors across Europe, Australia, and Canada to explore their experiences with returning results from GS to patients. GHPs remarked that patients' reactions to receiving causative results vary; some patients are relieved or appreciative at identification of a genetic cause, while others express frustration that finding an answer does not lead to a treatment. GHPs discussed the importance of managing expectations in pre‐test counseling to minimize disappointment. Although some patients experience mild distress, they generally cope well receiving unsolicited findings and appreciate being informed of their increased risk. While many GHPs felt patients understand what a variant of uncertain significance (VUS) means, a proportion found VUS quite difficult to convey and had concerns for patients' level of understanding. A proportion mentioned concerns regarding potential negative repercussions of non‐genetic clinicians misinterpreting the significance of VUS. These results provide important insights into the challenges GHPs can experience returning GS results to patients, highlighting a need for additional training for GHPs and non‐genetic clinicians. [ABSTRACT FROM AUTHOR]
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- 2020
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8. Expanded carrier screening for monogenic disorders: where are we now?
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Chokoshvili, Davit, Vears, Danya, and Borry, Pascal
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Background: Expanded carrier screening (ECS), which can identify carriers of a large number of recessive disorders in the general population, has grown in popularity and is now widely accessible to prospective parents. This article presents a comprehensive overview of the characteristics of currently available ECS tests.Methods: To identify relevant ECS providers, we employed a multi-step approach, which included online searching, review of the recent literature, and consultations with researchers familiar with the current landscape of ECS.Results: As of January 2017, there were 16 providers of ECS tests: 13 commercial companies, 2 medical hospitals, and 1 academic diagnostic laboratory. We observed drastic differences in the characteristics of ECS tests, with the number of conditions ranging from 41 to 1792. Only three conditions (cystic fibrosis, maple syrup urine disease 1b, and Niemann-Pick disease) were screened for by all providers. Where the same disease gene was included by multiple providers, substantial differences existed in the mutations screened and/or variant interpretation/reporting strategies.Conclusion: Given the importance of carrier screening results in reproductive decision-making, the observed heterogeneity across ECS panels is concerning. Efforts should be made to ensure that clear and concrete criteria are in place to guide the development of ECS panels. © 2017 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]- Published
- 2018
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9. 'They Just Want to Know' - Genetic Health Professionals' Beliefs About Why Parents Want to Know their Child's Carrier Status.
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Vears, Danya, Delany, Clare, Massie, John, and Gillam, Lynn
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In the context of a child being diagnosed with a genetic condition, reports from both parents and health professionals suggest many genetic health professionals are reluctant to provide carrier testing for unaffected siblings, despite the lack of evidence of harm. We propose that genetic health professionals' understandings of why parents want to have their children tested may contribute to their reluctance to test. We draw on interviews with 17 genetic health professionals, reporting their beliefs about parents' motivations for testing and their intentions to communicate results to their children. Data were analyzed using inductive content analysis. Genetic health professionals reported attributions that contrasted with reasons parents actually report. These disparities fall into two categories: 1) attributing reasons that parents do not themselves report (i.e. for reassurance about their child's health), and 2) not recognizing the reasons that parents actually do report for wanting testing (i.e. to communicate the information to their child). By identifying that genetic health professionals may be misattributing reasons to parents for desiring their child's carrier status, they may be missing an opportunity to assist parents to make decisions that are in line with their values and the best interests of the family. [ABSTRACT FROM AUTHOR]
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- 2017
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10. Why Do Parents Want to Know their Child's Carrier Status? A Qualitative Study.
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Vears, Danya, Delany, Clare, Massie, John, and Gillam, Lynn
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When a child is identified with a genetic condition, some parents want to know the carrier status of their other children. There has been little exploration of why parents want this information. To address this question, semi-structured interviews were conducted with parents of 32 children with cystic fibrosis, haemophilia, and Duchenne muscular dystrophy who wanted to know the carrier status of their other children. Data was analyzed using inductive content analysis. Parents expressed a range of reasons for desiring their child's carrier status, which fell into two broad categories: 1) benefit for the parents and 2) perceived benefit to the child. Parents discussed the desire for certainty and peace of mind derived from having knowledge of their child's status. The most commonly expressed reason for wanting to know their child's carrier status was in order to communicate the information to their child to provide them with the ability to make informed reproductive decisions. These reasons suggest parents are seeking their children's carrier information both as a coping strategy and to communicate carrier information as part of their role as a parent. This has important implications for genetic counseling practice, especially as international guidelines generally recommend against carrier testing in children. [ABSTRACT FROM AUTHOR]
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- 2016
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11. Clinical genetic study of the epilepsy-aphasia spectrum.
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Tsai, Meng‐Han, Vears, Danya F., Turner, Samantha J., Smith, Robert L., Berkovic, Samuel F., Sadleir, Lynette G., and Scheffer, Ingrid E.
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MEDICAL genetics , *APHASIA , *TREATMENT of epilepsy , *HUMAN phenotype , *COMPARATIVE studies , *FEBRILE seizures - Abstract
Purpose To characterize the frequency and nature of the family history of seizures in probands with epilepsy falling within the epilepsy-aphasia spectrum ( EAS) in order to understand the genetic architecture of this group of disorders. Methods Patients with epileptic encephalopathy with continuous spike-and-wave during sleep ( ECSWS), Landau- Kleffner syndrome ( LKS), atypical benign partial epilepsy ( ABPE), and intermediate epilepsy-aphasia disorders ( IEAD) were recruited. All affected and available unaffected relatives up to three degrees of relatedness underwent phenotyping using a validated seizure questionnaire. Pedigrees were constructed for all families. The proportion of affected relatives according to each degree of relatedness was calculated. The epilepsy phenotypes in close relatives were analyzed. The data were compared to the families of probands with benign childhood epilepsy with centrotemporal spikes ( BECTS) using the same methodology. Key Findings Thirty-one probands, including five ECSWS, three LKS, one ABPE, and 22 IEAD were recruited. The mean age of seizure onset was 3.9 (range 0.5-7) years. A male predominance was seen (68%, 21/31) . Sixteen (51.6%) of 31 had a positive family history of seizures. Among 1,254 relatives, 30 (2.4%) had a history of seizures: 13 (10.2%) of 128 first-degree relatives, 5 (1.7%) of 291 second-degree relatives, and 12 (1.4%) of 835 third-degree relatives. Thirteen had febrile seizures, including two who had both febrile seizures and epilepsy. Of the 19 relatives with epilepsy, 4 had BECTS, 4 epilepsies with focal seizures of unknown cause, 3 IEAD, and 7 unclassified. One had genetic generalized epilepsy. In the families of the BECTS probands, 9.8% of first-degree, 3% of second-degree, and 1.5% of third-degree relatives had seizures, which was not significantly different from the EAS cohort families. Significance The frequencies of seizures in relatives of probands with EAS suggest that the underlying genetic influence of EAS is consistent with complex inheritance and similar to BECTS. The phenotypic pattern observed in the affected relatives comprised predominantly febrile seizures and focal seizures. These findings suggest that a shared genetic predisposition to focal epilepsies underpins the epilepsy-aphasia spectrum. [ABSTRACT FROM AUTHOR]
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- 2013
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12. Family studies of individuals with eyelid myoclonia with absences.
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Sadleir, Lynette G., Vears, Danya, Regan, Brigid, Redshaw, Natalie, Bleasel, Andrew, and Scheffer, Ingrid E.
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SPASMS , *EYE movements , *CHILDHOOD epilepsy , *QUESTIONNAIRES , *MEDICAL genetics , *PHENOTYPES - Abstract
Purpose: Eyelid myoclonia with absences (EM) is an uncommon type of absence seizure associated with a variety of epilepsy syndromes. The syndrome of epilepsy with EM (EMA) has been proposed to denote the onset of frequent EM induced by eye closure and photic stimulation beginning in childhood. The clinical genetics of EMA has not been well characterized, although a family history of seizures is not infrequent. Methods: Individuals with EMA were ascertained by referral and through the investigators' clinical practices. All available family members were assessed for seizures using a validated seizure questionnaire. Electroclinical data were obtained on each proband and all affected family members; pedigrees were constructed. Families were analyzed for phenotypic patterns. Key Findings: Eighteen individuals with EMA were recruited. A history of seizures was found in 34 relatives in 15 (83%) of 18 families. In terms of epilepsy syndromes, 9 relatives from 7 of 15 families had febrile seizures. Two relatives had EMA. Classical genetic generalized epilepsy (GGE) syndromes were seen in five relatives: two generalized tonic-clonic seizures alone, two childhood absence epilepsy (CAE), and one juvenile myoclonic epilepsy (JME). Genetic epilepsy with febrile seizures plus (GEFS+) phenotypes occurred in 16 relatives. On review of the epilepsy syndromes within each family, seven families had a pattern consistent with GEFS+, whereas three families had classical GGE. Significance: The clinical genetics of EMA is suggestive of complex inheritance with shared genetic determinants overlapping with both classical GGE and GEFS+. The epilepsy syndromes in relatives of probands with EMA differ from those found in families of probands with CAE, supporting the concept that patients with EMA have a syndrome that is distinct from CAE. This presumably reflects different genetic components contributing to their genetic architecture. [ABSTRACT FROM AUTHOR]
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- 2012
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13. Efficacy of the ketogenic diet: Which epilepsies respond?
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Thammongkol, Sasipa, Vears, Danya F., Bicknell-Royle, Jillian, Nation, Judy, Draffin, Kellie, Stewart, Karen G., Scheffer, Ingrid E., and Mackay, Mark T.
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KETOGENIC diet , *SPASMS , *CHILDHOOD epilepsy , *ETIOLOGY of diseases , *FAT , *CARBOHYDRATES , *PROTEINS - Abstract
Summary We report the efficacy of the ketogenic diet in refractory epilepsies focusing on outcomes with regard to epilepsy syndromes and etiology in children and adults with refractory epilepsy. Sixty-four consecutive children and four adults were prospectively enrolled from 2002 to 2009; seven were excluded from analysis. The classical ketogenic diet was initiated on an inpatient basis with dietary ratios ranging from 2:1 to 4:1 fat to carbohydrate and protein. Patients were classified according to syndrome and etiology using the 1989 and more recent 2010 International League Against Epilepsy (ILAE) classification systems. Responders were defined as >50% reduction in seizure frequency compared to baseline. Syndromes included symptomatic generalized (52), genetic (idiopathic) generalized (7), and focal epilepsies (2) and etiologies included structural (24), genetic (18), and unknown (19). Twenty-nine (48%) of 61 patients were responders at 3 months. Two children became seizure-free: one with focal epilepsy of unknown etiology and another with refractory childhood absence epilepsy. Responsive syndromes included migrating partial epilepsy of infancy, childhood absence epilepsy, focal epilepsy, epilepsy with myoclonic-atonic seizures, and Dravet syndrome. Children with lissencephaly and hypoxic ischemic encephalopathy had surprisingly good responses. The ketogenic diet is an effective treatment for children and adults with refractory epilepsy. The response is predicted by type of epilepsy syndrome. Accurate characterization of the electroclinical syndrome is an important factor in decisions about timing of initiation of the ketogenic diet. [ABSTRACT FROM AUTHOR]
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- 2012
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14. Investigation of the 15q13.3 CNV as a genetic modifier for familial epilepsies with variable phenotypes.
- Author
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Mulley, John C., Scheffer, Ingrid E., Desai, Tarishi, Bayly, Marta A., Grinton, Bronwyn E., Vears, Danya F., Berkovic, Samuel F., and Dibbens, Leanne M.
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GENETICS of epilepsy ,GENETIC mutation ,LINKAGE (Genetics) ,PHENOTYPES ,KINDRED - Abstract
Summary Incomplete penetrance and variable phenotypic expression are characteristic of a number of syndromes of familial epilepsy. The purpose of the present investigation is to determine if the 15q13.3 copy number deletion functions as a locus modifying the epilepsy phenotype caused by other known or presumed pathogenic mutations segregating in families with epilepsies. No 15q13.3 microdeletions were detected in 756 affected or definite obligate carrier individuals across 151 families selected on the basis of having multiple members affected with epilepsy and showing a range of seizure types. Therefore, the 15q13.3 microdeletion does not act as a genetic modifier in this cohort of families and is not responsible for any of the genetic heterogeneity hypothesized to account for failure to detect linkage in previous genome-wide scans in five of the larger families included in this study. [ABSTRACT FROM AUTHOR]
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- 2011
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15. Neuropsychological and functional MRI studies provide converging evidence of anterior language dysfunction in BECTS.
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Lillywhite, Leasha M., Saling, Michael M., Harvey, A. Simon, Abbott, David F., Archer, John S., Vears, Danya F., Scheffer, Ingrid E., and Jackson, Graeme D.
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EPILEPSY ,DEVELOPMENTAL disabilities ,MAGNETIC resonance imaging ,SPASMS ,BRAIN diseases - Abstract
Benign childhood epilepsy with centrotemporal spikes (BECTS) is the most common epilepsy syndrome of childhood and can be associated with language difficulties. The exact profile of these difficulties and their neurofunctional underpinnings, however, are not yet clear. To further understand the impact of the BECTS syndrome on language, we assessed language performance using standard neuropsychological measures, and patterns of language lateralization using functional magnetic resonance imaging (fMRI) in children with typical BECTS (n = 20) and healthy controls (n = 20). The fMRI analyses revealed that language-related activation was less lateralized to the left hemisphere in anterior brain regions in the patients relative to the control group. This finding was consistent with decreased performance in the BECTS group compared to the control group on the neuropsychological measure most dependent on the integrity of anterior aspects of the language axis, namely, sentence production. The converging lines of evidence from the neuropsychological and activation methodologies support the view that BECTS is associated with language difficulties that are regional, and anterior, in nature. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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16. Clinical genetic studies in benign childhood epilepsy with centrotemporal spikes.
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Vears, Danya F., Tsai, Meng-Han, Sadleir, Lynette G., Grinton, Bronwyn E., Lillywhite, Leasha M., Carney, Patrick W., Simon Harvey, A., Berkovic, Samuel F., and Scheffer, Ingrid E.
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CHILDHOOD epilepsy , *SPASMS , *ELECTROENCEPHALOGRAPHY , *FEBRILE seizures , *BRAIN diseases - Abstract
Summary Purpose: To accurately determine the frequency and nature of the family history of seizures in patients with benign childhood epilepsy with centrotemporal spikes (BECTS). Method: Participants with BECTS were recruited from the electroencephalography (EEG) laboratories of three pediatric centers and by referral. Pedigrees were constructed for up to three degrees of relatedness for each proband. All available affected and unaffected individuals underwent phenotyping using a validated seizure questionnaire. The proportion of affected relatives according to degree of relatedness was calculated and phenotypic patterns were analyzed. Key Findings: Fifty-three probands with BECTS had a mean age of seizure onset at 7.8 years (range 2-12 years). Thirty-four (64%) of 53 patients were male. For 51 participants, pedigrees were available for three degrees of relatedness. Fifty-seven (2.7%) of 2,085 relatives had a history of seizures: Twenty-one (9.8%) of 214 first-degree, 15 (3%) of 494 second-degree, and 21 (1.5%) of 1,377 third-degree relatives. Febrile seizures were the most frequent phenotype, occurring in 26 of 57 affected relatives. There were 34 relatives with epilepsy: 6.5% (14 of 214) first-degree, 1.8% (9 of 494) second-degree, and 0.8% (11 of 1,377) third-degree relatives. Of 21 affected first-degree relatives: 8 of 21 had febrile seizures (FS), 4 had BECTS, 2 had epilepsy-aphasia spectrum disorder, one had temporal lobe epilepsy with hippocampal sclerosis, 2 had focal epilepsy of unknown cause, 2 had genetic generalized epilepsies, and 3 had miscellaneous. Significance: The frequency of epilepsies in relatives and the heterogeneous syndromes observed suggest that BECTS has a genetic component consistent with complex inheritance. Focal epilepsies are the most common seizure disorder observed in relatives, especially BECTS and epilepsy-aphasia spectrum disorder. Additional acquired or environmental factors are likely to be necessary for expression of the seizure disorder. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
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