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1.
J Genet Couns ; 32(3): 685-697, 2023 06.
Artículo en Inglés | MEDLINE | ID: mdl-36806333

RESUMEN

We defined orienting language in genetic counseling sessions as 'language intended to direct focus to a particular aspect of the counseling process; a physical, emotional, or cognitive space; or an outcome'. This is a concept expanding on the idea of 'orientation' statements in the genetic counseling literature. We propose that orienting language is an important component of effective communication in the genetic counseling process. Our goals were to document the presence of orienting language in genetic counseling sessions with practicing genetic counselors and simulated clients, categorize types of orienting language, and evaluate the purpose of this language. A sample of Genetic Counseling Video Project videotape transcripts was evaluated through consensus coding for orienting language. Orienting language was found to be abundant in the dataset evaluated. Each excerpt was coded for orienting language Strategies and Purpose. The six categories of Strategy codes identified were Logical Consistency, Providing Context, Guidance, Structuring the Session, Anchoring, and Procedural. The six categories of Purpose codes were Counselee Understanding, Guidance, Engagement, Promoting Effective Counselor/Counselee Interactions, Counselee Adaptation, and Relationship Building. Results support our expanded definition of orienting language, which was similar in both cancer and prenatal specialties and across years of counselor experience. Orienting language acts as a series of signposts to help clients navigate the sometimes complex and unfamiliar territory of a genetic counseling session. The introduction of this term into the genetic counseling literature allows its use by genetic counselors to be further evaluated and potentially incorporated into genetic counselor training.


Asunto(s)
Consejeros , Neoplasias , Femenino , Embarazo , Humanos , Asesoramiento Genético/psicología , Consejo , Lenguaje , Emociones , Neoplasias/genética
2.
J Genet Couns ; 32(6): 1266-1275, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37787411

RESUMEN

Delivering difficult news is a common occurrence in genetic counseling. This is evidenced by widespread instruction among genetic counseling programs. There is a disconnect in the confidence level of being able to deliver difficult news (DDN) following educational training across healthcare disciplines. Other healthcare professions have addressed this issue with simulation-based training based on the SPIKES protocol, a stepwise process for delivering difficult news. To our knowledge, there is limited research that investigates the impact of simulation-based training in delivering difficult news for genetic counselors. Our aim was to develop simulation-based training in how to deliver difficult news for genetic counselors and analyze the extent to which it increased their confidence to deliver difficult news. Board-certified genetic counselors from all specialties were recruited to participate in a 2-h training session which included the opportunity to practice delivering difficult news. We collected self-reported confidence scores in each of the SPIKES steps from 16 genetic counselors pre- and post-intervention. Participants answered open-ended evaluations about the program's strengths, weaknesses, and gaps in delivering difficult news content. Almost all participants (N = 15) stated that they had gained confidence in delivering difficult news following training completion. Confidence significantly improved in four of seven SPIKES steps. Participants found strengths of the training program to be in their ability to practice with a simulated patient, to reference concrete examples, and to follow the program easily. The results of this study suggest that post-graduate training in how to deliver difficult news using the SPIKES protocol may strengthen genetic counselors' confidence in performing this important skill.


Asunto(s)
Consejeros , Humanos , Consejeros/psicología , Asesoramiento Genético , Autoinforme , Escolaridad , Comunicación
3.
J Genet Couns ; 31(6): 1317-1329, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-35794694

RESUMEN

Decision-making regarding prenatal screening and diagnostic testing has become more complex as the number of options has increased, with pregnant patients having access to more information about their pregnancies than ever before. Genetic counselors have extensive training in prenatal genetic screening and testing options, but personal decision-making in this well-informed population remains largely unstudied. This study describes the prenatal testing decisions genetic counselors made during their own pregnancies, and the factors identified as important when making those decisions. A web-based, mixed-methods survey was distributed to members of multiple professional societies for genetic counselors. A total of 318 genetic counselors across numerous specialties in the United States and Canada participated in this study. The satisfaction with decision scale was modified and applied to measure participants' decisional satisfaction. In their most recent pregnancies, most genetic counselors pursued carrier screening (77%) and aneuploidy and/or open neural tube defect screening (88%). A minority of genetic counselors (15%) utilized diagnostic testing. Common factors considered when making testing decisions included wanting information that could impact future decisions, test specifics (e.g., accuracy, methodology, and content), and knowledge gained from participants' genetic counseling background. The uptake of diagnostic testing among prenatal genetic counselors was significantly greater (p < 0.05) than the uptake among genetic counselors in other specialties. This informed study population largely self-directed their own prenatal care, leading to high satisfaction with their decisions. Data in this study provide evidence for promoting participation in prenatal screening and testing decision-making to maximize decisional satisfaction.


Asunto(s)
Consejeros , Embarazo , Femenino , Humanos , Consejeros/psicología , Canadá , Pruebas Genéticas , Asesoramiento Genético/psicología , Diagnóstico Prenatal/métodos
4.
Am J Med Genet A ; 182(4): 792-797, 2020 04.
Artículo en Inglés | MEDLINE | ID: mdl-31953988

RESUMEN

In 2011, KIAA1033/WASHC4 was associated with autosomal recessive intellectual disability (ARID) in a large consanguineous family comprising seven affected individuals with moderate ID and short stature. Since then, no other cases of KIAA1033 variants have been reported. Here we describe three additional patients (from two unrelated families) with syndromic ID due to compound heterozygous KIAA1033 variants ascertained by exome sequencing (ES). Two sisters, aged 4 and 5.5 years, had a stop-gain and a missense variants, each inherited from one parent (p.(Gln442*) and p.(Asp1048Gly)). Both had learning disabilities, macrocephaly, dysmorphic features, skeletal anomalies, and subependymal heterotopic nodules. In addition, the younger sibling had a congenital absence of the right internal carotid and bilateral sensorineural hearing loss. The third patient was aged 34 years and had two missense variants, one inherited from each parent (p.(Lys1079Arg) and p.(His503Arg)). This patient presented with mild ID, short stature, and microcephaly. KIAA1033 encodes a large protein (WASHC4), which is part of the WASH complex. The WASH complex is involved in the regulation of the fission of tubules that serve as transport intermediates during endosome sorting. Another member of the WASH complex, KIAA0196/WASHC5, has already been implicated in ARID with brain and cardiac malformations, under the designation of 3C or Ritscher-Schinzel syndrome (MIM#20210). ES has proved efficient for finding replications of genes with insufficient data in the literature to be defined as new OMIM genes. We conclude that KIAA1033 is responsible for a heterogeneous ARID phenotype, and additional description will be needed to refine the clinical phenotype.


Asunto(s)
Discapacidad Intelectual/patología , Péptidos y Proteínas de Señalización Intracelular/genética , Mutación , Adulto , Preescolar , Femenino , Humanos , Recién Nacido , Discapacidad Intelectual/genética , Masculino , Linaje , Fenotipo , Subunidades de Proteína/genética
5.
J Genet Couns ; 29(6): 1234-1244, 2020 12.
Artículo en Inglés | MEDLINE | ID: mdl-32453499

RESUMEN

Few studies have explored the real-world experiences and strategies of genetic counselors involved in the process of returning secondary findings (SFs). This study aimed to describe and categorize the experiences for the return of SFs from clinical sequencing. Semi-structured telephone interviews with 21 genetic counselors representing 56 incidences were conducted. A content analysis was conducted on the transcripts through an iterative, team-based approach. Four common categories emerged across all interviews. These included (a) the importance of pretest counseling for the return of SFs, (b) how primary test results influenced the level of importance placed on the SFs, (c) patients' emotional reactions from receiving SF results, and (d) how returning SFs changed future pretest counseling and consent. This study identified experiences and common practices by genetic counselors who returned SFs. More research is needed to assess how genetic counselors' specific strategies improve patient comprehension and medical actions.


Asunto(s)
Consejeros/psicología , Asesoramiento Genético/psicología , Relaciones Profesional-Paciente , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad
6.
Am J Med Genet C Semin Med Genet ; 178(1): 5-9, 2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-29582554

RESUMEN

By enabling precise genetic diagnosis and treatment there is great potential for inexpensive, accurate, and widely accessible genomic information to transform health care and improve the general well-being of virtually every person. To maximize this potential, approaches to genetic counseling and the role of genetic counselors will need to adapt to fit changing clinical and commercial needs worldwide. This will require overcoming multiple challenges including an inadequate workforce; development and implementation of alternate models of service delivery; integration of new technologies to improve, extend, and expand services; and support for equitable education and counseling among all populations. Genetic counselors are aptly poised to take on these challenges. The result will be better informed patients and families more capable of utilizing genetic information appropriately, making autonomous decisions about their care, and modifying their approach to disease risk to actively contribute to their health. The contributors to this issue of Seminars discuss how key areas of genetic counseling need to evolve and how genetic counselors can play a role in shaping the future of precision health.


Asunto(s)
Consejeros , Asesoramiento Genético , Pruebas Genéticas , Medicina de Precisión , Pruebas Genéticas/legislación & jurisprudencia , Humanos , Neoplasias/etiología , Neoplasias/genética
7.
J Genet Couns ; 27(6): 1497-1505, 2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-29951717

RESUMEN

Genetic counselors and clinical geneticists are often in the position of delivering difficult news (DDN) to patients and families. Many studies show that healthcare providers require major improvement in the skills needed in DDN in a manner that is satisfactory to their patients. The purpose of this study was to assess the amount and methodology of DDN training received by genetic counselors and medical genetics residents in their training programs, such as observations of DDN or attending didactic lectures. To our knowledge, there is no previous assessment or study of DDN training in genetic counselor and medical genetics residency programs; therefore, we aim to both assess and compare the training in DDN received by genetic counselors and by genetics residents and determine whether there is a desire for recommendations on DDN training. We invited genetic counseling (GC) and genetics residency program directors to participate in an online survey designed to assess coursework, clinical experiences, and directors' attitudes toward teaching DDN. Response rate was 85% (28/33) for GC program directors and 26% (14/53) for genetics residency program directors. One hundred percent of GC and genetics residency directors who responded to the survey agreed that it is important for genetic counselors and medical geneticists to be able to deliver difficult news effectively and that training programs should formally teach students how to deliver difficult news. Six of the eight common teaching methods are used by at least 75% of GC programs while two of eight are used by at least 75% of genetics residency programs. Seventy-nine percent of GC and 93% of genetics residency program directors agree that there should be recommendations on how to teach students to deliver this news. Our results show that techniques for DDN are integrated more fully into GC program curricula than genetics residency curricula. Directors of both types of programs desire recommendations and more standardized education for training students to deliver difficult news.


Asunto(s)
Curriculum , Asesoramiento Genético , Genética/educación , Internado y Residencia , Revelación de la Verdad , Adulto , Humanos
8.
Genet Med ; 19(4): 467-475, 2017 04.
Artículo en Inglés | MEDLINE | ID: mdl-27632689

RESUMEN

A major challenge to implementing precision medicine is the need for an efficient and cost-effective strategy for returning individual genomic test results that is easily scalable and can be incorporated into multiple models of clinical practice. My46 is a Web-based tool for managing the return of genetic results that was designed and developed to support a wide range of approaches to disclosing results, ranging from traditional face-to-face disclosure to self-guided models. My46 has five key functions: set and modify results-return preferences, return results, educate, manage the return of results, and assess the return of results. These key functions are supported by six distinct modules and a suite of features that enhance the user experience, ease site navigation, facilitate knowledge sharing, and enable results-return tracking. My46 is a potentially effective solution for returning results and supports current trends toward shared decision making between patients and providers and patient-driven health management.Genet Med 19 4, 467-475.


Asunto(s)
Biología Computacional/métodos , Acceso de los Pacientes a los Registros , Investigación Biomédica , Toma de Decisiones , Genómica , Humanos , Internet , Informática Médica , Medicina de Precisión
9.
Am J Med Genet A ; 173(11): 3022-3028, 2017 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-28941052

RESUMEN

De novo, germline variants in DNMT3A cause Tatton-Brown-Rahman syndrome (TBRS). This condition is characterized by overgrowth, distinctive facial appearance, and intellectual disability. Somatic DNMT3A variants frequently occur in hematologic malignances, particularly acute myeloid leukemia. The Arg882 residue is the most common site of somatic DNMT3A variants, and has also been altered in patients with TBRS. Here we present three additional patients with this disorder attributed to DNMT3A germline variants that disrupt the Arg882 codon, suggesting that this codon may be a germline mutation hotspot in this disorder. Furthermore, based on the investigation of previously reported variants in patients with TBRS, we found overlap in the spectrum of DNMT3A variants observed in this disorder and somatic variants in hematological malignancies.


Asunto(s)
ADN (Citosina-5-)-Metiltransferasas/genética , Cara/fisiopatología , Neoplasias Hematológicas/genética , Discapacidad Intelectual/genética , Codón , ADN Metiltransferasa 3A , Femenino , Predisposición Genética a la Enfermedad , Mutación de Línea Germinal/genética , Neoplasias Hematológicas/patología , Humanos , Discapacidad Intelectual/patología , Masculino , Mutación , Fenotipo
10.
Am J Med Genet A ; 167A(5): 974-82, 2015 May.
Artículo en Inglés | MEDLINE | ID: mdl-25755074

RESUMEN

Hyperphagia, developmental delays, and maladaptive behaviors are common in Prader-Willi syndrome (PWS) likely resulting in heightened parental stress. Objectives were to evaluate stress, describe usefulness of coping behaviors, and assess the impact of a structured Plan of Care (PC) on parents with children with PWS. Parents answered Perceived Stress Scale (PSS-14), Coping Health Inventory for Parents (CHIP), and narrative/demographic surveys. The PC was introduced to a cohort of parents after completion of the PSS-14 and CHIP and re-administered 4-6 month after the introduction of the PC. Higher parental stress (n = 57) was observed compared to the general population, and associated with parent's age, number of children living at home, and child's age and residential setting. "Maintaining family integration, cooperation, and an optimistic definition of the situation" was the most useful coping pattern. Thirty-eight parents answered the PSS-14 and CHIP after the PC. Parental stress decreased after the PC (P = 0.035). Coping behaviors related to "maintaining family integration" increased after the PC (P = 0.042). Women and men preferred different coping patterns before and after the PC. In conclusion, parental stress is increased in PWS, and a PC decreased stress and increased coping behaviors related to family stability for parents with children with PWS.


Asunto(s)
Hiperfagia/genética , Padres/psicología , Síndrome de Prader-Willi/genética , Estrés Psicológico/genética , Adulto , Anciano , Anciano de 80 o más Años , Cromosomas Humanos Par 15/genética , Femenino , Humanos , Hiperfagia/fisiopatología , Hiperfagia/psicología , Masculino , Persona de Mediana Edad , Síndrome de Prader-Willi/epidemiología , Síndrome de Prader-Willi/patología , Estrés Psicológico/fisiopatología , Encuestas y Cuestionarios
11.
Am J Med Genet A ; 161A(5): 935-50, 2013 May.
Artículo en Inglés | MEDLINE | ID: mdl-23610049

RESUMEN

Exome and whole genome sequencing (ES/WGS) offer potential advantages over traditional approaches to diagnostic genetic testing. Consequently, use of ES/WGS in clinical settings is rapidly becoming commonplace. Yet there are myriad moral, ethical, and perhaps legal implications attached to the use of ES and health care professionals and institutions will need to consider these implications in the context of the varied practices and policies of ES service providers. We developed "core elements" of content and procedures for informed consent, data sharing, and results management and a quantitative scale to assess the extent to which research protocols met the standards established by these core elements. We then used these tools to evaluate the practices and policies of each of the 6 U.S. CLIA-certified labs offering clinical ES. Approaches toward informed consent, data sharing, and results return vary widely among ES providers as do the overall potential merits and disadvantages of each, and more importantly, the balance between the two.


Asunto(s)
Exoma/genética , Difusión de la Información/ética , Consentimiento Informado/estadística & datos numéricos , Pautas de la Práctica en Medicina/estadística & datos numéricos , Análisis de Secuencia de ADN/ética , Humanos , Principios Morales , Política Organizacional , Análisis de Secuencia de ADN/normas , Estados Unidos
12.
Am J Med Genet A ; 158A(6): 1310-9, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-22532433

RESUMEN

Scientific evidence on the extent to which ethical concerns about privacy, confidentiality, and return of results for whole genome sequencing (WGS) are effectively conveyed by informed consent (IC) is lacking. The aim of this study was to learn, via qualitative interviews, about participant expectations and perceptions of risks, benefits, and harms of WGS. Participants in two families with Miller syndrome consented for WGS were interviewed about their experiences of the IC process and their perceptions of risks, benefits, and harms of WGS. Interviews were transcribed and analyzed for common themes. IC documents are included in the Supplementary Materials. Participants expressed minimal concerns about privacy and confidentiality with regard to both their participation and sharing of their WGS data in restricted access databases. Participants expressed strong preferences about how results should be returned, requesting both flexibility of the results return process and options for the types of results to be returned. Participant concerns about risks to privacy and confidentiality from broad sharing of WGS data are likely to be strongly influenced by social and medical context. In these families with a rare Mendelian syndrome, the perceived benefits of participation strongly trumped concerns about risks. Individual preferences, for results return, even within a family, varied widely. This underscores the need to develop a framework for results return that allows explicitly for participant preferences and enables modifications to preferences over time. Web-based tools that facilitate participant management of their individual research results could accommodate such a framework.


Asunto(s)
Genoma Humano , Consentimiento Informado , Análisis de Secuencia de ADN/ética , Anomalías Múltiples/diagnóstico , Anomalías Múltiples/genética , Confidencialidad , Humanos , Deformidades Congénitas de las Extremidades/diagnóstico , Deformidades Congénitas de las Extremidades/genética , Disostosis Mandibulofacial/diagnóstico , Disostosis Mandibulofacial/genética , Micrognatismo/diagnóstico , Micrognatismo/genética , Privacidad , Medición de Riesgo , Encuestas y Cuestionarios
13.
J Autism Dev Disord ; 49(2): 794-808, 2019 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-30173310

RESUMEN

Despite current guidelines, few children with autism spectrum disorder (ASD) receive genetic evaluations. We surveyed Utah pediatricians to characterize the knowledge, beliefs, current practices and perceived barriers of pediatricians regarding genetic evaluation of children with ASD. We found over half lacked knowledge of current guidelines and many held beliefs about genetic evaluation that did not align with guidelines. Barriers were lack of insurance coverage for genetic evaluation/testing and long wait times to see geneticists. Pediatricians with beliefs aligned with guidelines and those aware of the role of genetic counselors were more likely to adhere to guidelines. Efforts to educate pediatricians are needed along with system level solutions regarding availability of geneticists and reimbursement for genetic testing.


Asunto(s)
Trastorno del Espectro Autista/genética , Pruebas Genéticas/normas , Conocimientos, Actitudes y Práctica en Salud , Pediatras/psicología , Trastorno del Espectro Autista/diagnóstico , Niño , Femenino , Pruebas Genéticas/estadística & datos numéricos , Adhesión a Directriz , Humanos , Masculino , Encuestas y Cuestionarios , Utah
14.
Clin Dysmorphol ; 13(2): 103-106, 2004 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-15057127

RESUMEN

We report on a girl with an abnormal hybridization pattern for the subtelomeric fluorescence in-situ hybridization (FISH) probe panel showing deletion of the long arm telomeric region of chromosome 6. All other subtelomere DNA probes showed normal hybridization patterns. Metaphase cells analysed from cultures of peripheral blood revealed a normal female chromosome complement at the 650-band level. The deletion was further characterized using genomic microarray analysis. Clinical findings include: developmental delay, seizures, hypoplasia of the corpus callosum, dextrocardia, unusual dimpling of knees and elbows, and minor anomalies. We are aware of only two other reports of isolated cryptic 6q subtelomeric deletions not associated with other chromosomal abnormalities. The absence of retinal abnormalities in our case supports the theory that genes responsible for the retinal abnormalities in other terminal 6q deletions are proximal to 6q27. Subtelomeric FISH probes were useful in establishing a diagnosis in our patient. As more cases are reported, we may be able to establish discrete phenotypes and natural histories that can aid in counselling families.


Asunto(s)
Deleción Cromosómica , Cromosomas Humanos Par 6 , Telómero/genética , Cuerpo Calloso/patología , Discapacidades del Desarrollo/genética , Dextrocardia/patología , Femenino , Humanos , Hibridación Fluorescente in Situ , Lactante , Análisis de Secuencia por Matrices de Oligonucleótidos , Convulsiones/genética
15.
Nat Genet ; 42(1): 30-5, 2010 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-19915526

RESUMEN

We demonstrate the first successful application of exome sequencing to discover the gene for a rare mendelian disorder of unknown cause, Miller syndrome (MIM%263750). For four affected individuals in three independent kindreds, we captured and sequenced coding regions to a mean coverage of 40x and sufficient depth to call variants at approximately 97% of each targeted exome. Filtering against public SNP databases and eight HapMap exomes for genes with two previously unknown variants in each of the four individuals identified a single candidate gene, DHODH, which encodes a key enzyme in the pyrimidine de novo biosynthesis pathway. Sanger sequencing confirmed the presence of DHODH mutations in three additional families with Miller syndrome. Exome sequencing of a small number of unrelated affected individuals is a powerful, efficient strategy for identifying the genes underlying rare mendelian disorders and will likely transform the genetic analysis of monogenic traits.


Asunto(s)
Anomalías Múltiples/genética , Exones/genética , Oxidorreductasas actuantes sobre Donantes de Grupo CH-CH/genética , Análisis de Secuencia de ADN/métodos , Anomalías Múltiples/patología , Secuencia de Aminoácidos , Dihidroorotato Deshidrogenasa , Salud de la Familia , Femenino , Predisposición Genética a la Enfermedad , Humanos , Masculino , Disostosis Mandibulofacial/patología , Datos de Secuencia Molecular , Mutación , Sistemas de Lectura Abierta/genética , Homología de Secuencia de Aminoácido , Síndrome
16.
Am J Med Genet C Semin Med Genet ; 142C(3): 173-9, 2006 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-17048355

RESUMEN

Breaking the difficult news of an unexpected diagnosis to parents in the newborn setting is a common occurrence in genetic counseling. Many clinical geneticists and genetic counselors have had the challenge of delivering a postnatal diagnosis of Down syndrome to parents of newborns. Down syndrome is a common chromosome condition occurring in approximately 1 in 800 live births. Presenting the diagnosis to families must be accomplished in a supportive, positive, caring, and honest manner. However, there are few scientific data and little instruction in training programs on how best to convey this news in an appropriate manner. Several articles in the literature over the last three decades have proposed various guidelines for the so-called informing interview. Discussions of parents' preferences and experiences in receiving this news have also been documented. Few reports, however, have focused on breaking difficult news of the diagnosis of a genetic condition to parents in a newborn setting in the genetics literature. In this paper, we will review the medical literature on delivering difficult news, specifically focused on that regarding the diagnosis of Down syndrome in the newborn setting. We propose a theoretical framework from which the informing interview can be planned and future outcome data can be measured. In this way, researchers of this theme can investigate the process, including the healthcare professionals' delivery of difficult news and make recommendations for continued improvement of the process. Our model can be generalized to breaking difficult news for a variety of other congenital conditions.


Asunto(s)
Síndrome de Down/diagnóstico , Comunicación , Familia , Asesoramiento Genético , Humanos , Recién Nacido
17.
Am J Med Genet C Semin Med Genet ; 125C(1): 28-34, 2004 Feb 15.
Artículo en Inglés | MEDLINE | ID: mdl-14755431

RESUMEN

A multistate Centers for Disease Control and Prevention (CDC) study was designed to investigate the etiology of congenital hearing loss in infants ascertained through state-mandated hearing screening or early hearing loss detection and intervention (EHDI) programs. At least 50% of permanent childhood-onset hearing loss is due to genetic causes, and approximately 20% of all infants with congenital hearing loss have mutations in the GJB2 gene. Another 1% of childhood hearing loss is due to mitochondrial DNA (mtDNA) mutations. The specific aims of this study are to 1) classify the etiology of congenital hearing loss in infants by doing prospective genetic evaluations of all newborns with permanent hearing loss from defined geographic areas, 2) determine the frequency of mutations in GJB2 and two common mitochondrial mutations in these populations, and 3) establish a model infrastructure linking genetic services to statewide EHDI programs. As of April 2003, Utah is the only center evaluating patients. Study subjects identified through the Utah Department of Health EHDI program are contacted by letter and offered a comprehensive medical genetics evaluation with DNA testing for GJB2 and mitochondrial mutations A1555G and A7445G. To date, 25 probands and their immediate family members have been evaluated. We have identified 20 cases with nonsyndromic hearing loss (7 multiplex and 13 simplex), 4 with syndromic hearing loss, and 1 with presumed cytomegalovirus (CMV)-induced hearing loss. Six of 19 (32%) nonsyndromic cases with sensorineural hearing loss have mutations of one or both alleles of the GJB2 gene, and 21% are homozygous or compound heterozygotes for the 35delG mutation. No A1555G or A7445G mtDNA mutations have been found. Data reported to date include only children born in Utah, but EHDI programs in Hawaii, Rhode Island, and designated areas of Georgia have begun enrolling children in what is now a multistate collaborative study. This is the first comprehensive investigation to determine the etiology of hearing loss from populations ascertained through EHDI programs. The results of this study will facilitate the incorporation of genetic services into EHDI programs.


Asunto(s)
Conexinas/genética , Pruebas Genéticas , Pérdida Auditiva/congénito , Pérdida Auditiva/diagnóstico , Pérdida Auditiva/genética , Tamizaje Neonatal/métodos , Centers for Disease Control and Prevention, U.S. , Estudios de Cohortes , Conexina 26 , Análisis Mutacional de ADN , ADN Mitocondrial/genética , Femenino , Humanos , Recién Nacido , Masculino , Evaluación de Programas y Proyectos de Salud , Gobierno Estatal , Estados Unidos , Utah
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