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1.
Am J Bioeth ; 24(4): 50-52, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38529980

Assuntos
Bioética , Humanos
4.
Eur J Hum Genet ; 30(11): 1269-1275, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-35902698

RESUMO

Non-invasive prenatal testing's (NIPT) potential to screen for a wide range of conditions is receiving growing attention. This study explores Canadian healthcare professionals' perceptions towards NIPT's current and possible future uses, including paternity testing, sex determination, and fetal whole genome sequencing. Semi-structured interviews were conducted with ten healthcare professionals, and another 184 participated in a survey. The triangulation of our findings shows that there is considerable agreement among healthcare professionals on expanding NIPT use for medical conditions including fetal aneuploidies and monogenic diseases, but not for non-medical conditions (sex determination for non-medical reasons and paternity testing), nor for risk predisposition information (late onset diseases and Fetal Whole Genome Sequencing). Healthcare professionals raise concerns related to eugenics, the future child's privacy, and psychological and emotional burdens to prospective parents. Professional societies need to take these concerns into account when educating healthcare professionals on the uses of NIPT to ensure prospective parents' reproductive decisions are optimal for them and their families.


Assuntos
Pessoal de Saúde , Diagnóstico Pré-Natal , Feminino , Humanos , Gravidez , Canadá , Atenção à Saúde , Diagnóstico Pré-Natal/métodos , Estudos Prospectivos
5.
Eur J Endocrinol ; 186(4): 489-501, 2022 Mar 08.
Artigo em Inglês | MEDLINE | ID: mdl-35167489

RESUMO

Context: The measurement of parathyroid hormone(PTH) in situ (PTHis) by fine-needle aspiration (FNA) has been proposed as a tool to preoperatively help localize parathyroid glands detected on ultrasound. However, the accuracy of PTHis is highly variable according to the few available studies. Aim: We aimed to develop and validate the PTHis procedure and assessed the performance of PTHis in a large series of patients with hyperparathyroidism and/or undetermined cervical lesions. Patients and methods: The technique set-up consisted of PTHis measurement in thyroid samples from patients with thyroid nodules and patients with high circulating PTH levels (tertiary hyperparathyroidism). Consecutive patients were recruited at one tertiary referral centre from 2017 to 2020 and submitted to ultrasound-guided FNA-PTHis determination. Results: During the method set-up, we obtained undetectable PTHis levels in all non-parathyroid tissues after sample dilutions. PTHis was higher in patients with hyperparathyroidism (n = 145; 1817 ± 3739 ng/L; range: <4.6-31 140) than in those with thyroid or undetermined cervical lesions (n= 34; <4.6 ng/mL; P < 0.0001). When evaluating PTHis performance in histologically proven samples (158 lesions from 121 patients), PTHis was detectable in 85/97 parathyroid lesions (87%; range: 22-31;140 ng/L) and undetectable in all non-parathyroid lesions (n = 61; P < 0.0001). The specificity and positive predictive value were 100%, and the sensitivity was 87.6%. False-negative lesions (n= 12) were smaller (9.4 ± 5.9 mm) and more often consisted of hyperplasias (75%) than true-positive lesions (16.1 ± 8.4 mm and 33%, P = 0.009 and P = 0.0089, respectively). The method was safe and well tolerated. Four educational cases are also provided. Conclusions: PTHis determination is a safe and well-tolerated procedure that enhances the specificity of ultrasound-detected lesions. If accurately set-up, it confirms the parathyroid origin of uncharacterized cervical lesions.


Assuntos
Glândulas Paratireoides/química , Hormônio Paratireóideo/análise , Biópsia por Agulha Fina/métodos , Humanos , Hiperparatireoidismo , Glândulas Paratireoides/patologia , Hormônio Paratireóideo/sangue , Reprodutibilidade dos Testes , Sensibilidade e Especificidade , Glândula Tireoide/química , Nódulo da Glândula Tireoide/química , Nódulo da Glândula Tireoide/patologia , Ultrassonografia
6.
Soc Sci Med ; 304: 112930, 2022 07.
Artigo em Inglês | MEDLINE | ID: mdl-32216981

RESUMO

Non-invasive prenatal testing (NIPT) using cell-free DNA (cfDNA) offers numerous benefits to pregnant women and their families. It also raises ethical, legal and social concerns regarding, for instance, the possible effects of a routinization of prenatal genetic testing on free and informed decision-making by prospective parents, and the role of the state in governing its use. Technological advances are allowing cfDNA analyses to detect an increasing number of genetic risks and conditions in the fetus, potentially further exacerbating such concerns. From May 2015 to December 2016, we conducted a three-round Policy Delphi study (NR1 = 61, NR2 = 58, NR3 = 47; overall retention rate = 77.0%) to explore the social acceptability (SA) of current and potential future uses of NIPT in Canada according to participants with relevant professional, research or advocacy expertise. Participants came from four groups: healthcare professionals (NR3 = 14), social sciences and humanities researchers (NR3 = 13), patients/disability rights advocates (NR3 = 14), and cultural/religious communities advocates (NR3 = 6). This paper presents SA criteria and contextual contingencies relevant to the assessment of NIPT's SA according to the group. It also reports what uses (conditions or motives) participants thought should be banned, permitted, publicly funded, or promoted as a public health strategy. According to them, conditions resulting in severe pain or early death, as well as trisomies (13, 18, 21) and sex chromosome abnormalities, should be covered by Canadian public health insurance. However, there was wide agreement that direct-to-consumer NIPT should be legally banned, and that testing for fetal sex for non-medical reasons using NIPT should be either proscribed or discouraged. In addition to identifying areas of consensus, our results point to disagreement regarding, for instance, the required level of governance of whole-genome sequencing and testing for late onset conditions with low penetrance. This study also provides a model for exploring the SA of emerging technologies using the Policy Delphi method.


Assuntos
Ácidos Nucleicos Livres , Diagnóstico Pré-Natal , Canadá , Técnica Delfos , Feminino , Testes Genéticos/métodos , Humanos , Gravidez , Estudos Prospectivos
7.
Annu Rev Genomics Hum Genet ; 22: 309-338, 2021 08 31.
Artigo em Inglês | MEDLINE | ID: mdl-33848430

RESUMO

Since its introduction in 2011, noninvasive prenatal testing (NIPT) has spread rapidly around the world. It carries numerous benefits but also raises challenges, often related to sociocultural, legal, and economic contexts. This article describes the implementation of NIPT in nine countries, each with its own unique characteristics: Australia, Canada, China and Hong Kong, India, Israel, Lebanon, the Netherlands, the United Kingdom, and the United States. Themes covered for each country include the structure of the healthcare system, how NIPT is offered, counseling needs and resources, and cultural and legal context regarding disability and pregnancytermination. Some common issues emerge, including cost as a barrier to equitable access, the complexity of decision-making about public funding, and a shortage of appropriate resources that promote informed choice. Conversely, sociocultural values that underlie the use of NIPT vary greatly among countries. The issues described will become even more challenging as NIPT evolves from a second-tier to a first-tier screening test with expanded use.


Assuntos
Teste Pré-Natal não Invasivo , Austrália , Canadá , China , Feminino , Humanos , Gravidez , Diagnóstico Pré-Natal , Estados Unidos
8.
BMC Pregnancy Childbirth ; 21(1): 54, 2021 Jan 13.
Artigo em Inglês | MEDLINE | ID: mdl-33441113

RESUMO

BACKGROUND: In the near future, developments in non-invasive prenatal testing (NIPT) may offer couples the opportunity to expand the range of genetic conditions tested with this technology. This possibility raises a host of ethical and social concerns, such as the type of information (medical vs. non-medical information) that couples might be exposed to and how this might complicate their informed decision-making. Currently, only limited research, mainly carried out in western countries, was conducted on women's and partners' views regarding the potential expansion of NIPT. METHODS: This study used semi-structured interviews with pregnant women and their partners to explore their views on future potential NIPT applications such as non-medical sex selection and non-medical traits, paternity testing, and NIPT use for fetal whole genome sequencing (FWGS). It was conducted in Lebanon and Quebec, as case studies to explore the impact of cultural differences on these views. RESULTS: We found no differences and many similarities when comparing the perceptions of participants in both contexts. While couples in both settings disapproved of the use of NIPT for non-medical sex selection and non-medical traits such as physical characteristics, they were near-unanimous about their support for its use for paternity testing in specific cases, such as legal doubts or conflicts related to the identity of the father. Participants were more ambivalent about NIPT for Fetal Whole Genome Sequencing. They supported this use to detect conditions that would express at birth or early childhood, while objecting to testing for adult-onset conditions. CONCLUSIONS: These results can further inform the debate on the future uses of NIPT and future policy related its implementation.


Assuntos
Tomada de Decisões , Pai , Teste Pré-Natal não Invasivo/estatística & dados numéricos , Gestantes , Diagnóstico Pré-Natal , Adulto , Características Culturais , Emigrantes e Imigrantes , Feminino , Aconselhamento Genético , Testes Genéticos , Humanos , Entrevistas como Assunto , Líbano/etnologia , Masculino , Gravidez , Quebeque , Adulto Jovem
9.
AJOB Empir Bioeth ; 12(1): 53-62, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33095108

RESUMO

BACKGROUND: Noninvasive prenatal testing (NIPT) provides important benefits yet raises ethical concerns. We surveyed Canadian pregnant women and their partners to explore their views regarding pressure to test and terminate a pregnancy, as well as other societal impacts that may result from the routinization of NIPT. METHODS: A questionnaire was offered (March 2015 to July 2016) to pregnant women and their partners at five healthcare facilities in four Canadian provinces. RESULTS: 882 pregnant women and 395 partners completed the survey. 64% of women anticipated feeling no pressure to take the test if it were offered routinely, and 39% were not concerned about routinization leading to increased pressure to terminate a pregnancy of a fetus with Down Syndrome. Regarding other social concerns possibly resulting from routinization, pregnant women were most concerned regarding a reduction in resources available for people with Down Syndrome and their families and least concerned regarding a decrease in the population of people with Down Syndrome. CONCLUSIONS: Our findings reflect the concerns expressed by pregnant women and their partners, both personal (pressure to test, pressure to terminate) and societal (e.g., regarding potential negative impact on people with disabilities and their families). Even if most women were not concerned about feeling pressured to test due to NIPT routinization, a large minority express concerns that should not be taken lightly. Moreover, a majority of respondents were concerned regarding pressure to terminate pregnancies due to NIPT routinization as well as regarding most societal impacts they were queried on, especially the possible future reduction in resources available for people with DS and their families. Canadian policy-makers should consider these potential negative ramifications of NIPT and ensure that appropriate social policies accompany its implementation.


Assuntos
Síndrome de Down , Preferência do Paciente , Gestantes , Diagnóstico Pré-Natal/ética , Controles Informais da Sociedade , Adulto , Temas Bioéticos , Canadá , Pessoas com Deficiência , Síndrome de Down/diagnóstico , Emoções , Família , Feminino , Humanos , Masculino , Gravidez , Alocação de Recursos , Parceiros Sexuais , Discriminação Social , Normas Sociais
10.
Clin Nutr ; 40(1): 79-86, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-32448701

RESUMO

BACKGROUND & AIMS: Gestational diabetes mellitus (GDM) is one of the most frequent medical complications during pregnancy. It has been associated with many adverse pregnancy, fetal and neonatal outcomes, as well as with an increased risk for mothers and children in the long term. There is a growing interest in vitamin D and its potential role in the development of metabolic disorders. However, the medical literature is not consensual. The aim of this study was to assess the risk of GDM according to vitamin D status during the first trimester. METHODS: This study is a nested case-control study performed from a multicenter prospective observational cohort of pregnant women assessed for 25-hydroxyvitamin D levels (25OHD). Three hundred ninety-three patients were included in the initial cohort. After applying exclusion criteria, a total of 1191 pregnant women were included. Two hundred fifty women with GDM (cases) were matched to 941 women without GDM (controls) for parity, age, body mass index before pregnancy, the season of conception, and phototype. This study was funded by a grant from the "Programme Hospitalier de Recherche Publique 2010". RESULTS: The GDM risk was significantly greater for patients with 25OHD levels <20 ng/mL (OR = 1∙42, 95% CI 1∙06-1∙91; p = 0∙021). However, there was no significant relationship with other thresholds. The study of 25OHD levels with the more precise cutting of 5 units intervals showed a variable relationship with GDM risk, as the risk was low for very low 25OHD levels, increased for moderated levels, decreased for normal levels, and finally increased for higher levels. CONCLUSION: According to our study, there seems to be no linear relationship between GDM and 25OHD levels in the first trimester of pregnancy since GDM risk does not continuously decrease as 25OHD concentrations increase. Our results most probably highlight the absence of an association between 25OHD levels and GDM risk.


Assuntos
Diabetes Gestacional/epidemiologia , Estado Nutricional , Primeiro Trimestre da Gravidez/sangue , Vitamina D/análogos & derivados , Adulto , Estudos de Casos e Controles , Diabetes Gestacional/etiologia , Feminino , Humanos , Incidência , Estudos Observacionais como Assunto , Gravidez , Estudos Prospectivos , Fatores de Risco , Estações do Ano , Vitamina D/sangue
11.
BMC Med Ethics ; 21(1): 15, 2020 02 10.
Artigo em Inglês | MEDLINE | ID: mdl-32041603

RESUMO

BACKGROUND: The clinical introduction of non-invasive prenatal testing for fetal aneuploidies is currently transforming the landscape of prenatal screening in many countries. Since it is noninvasive, safe and allows the early detection of abnormalities, NIPT expanded rapidly and the test is currently commercially available in most of the world. As NIPT is being introduced globally, its clinical implementation should consider various challenges, including the role of the surrounding social and cultural contexts. We conducted a qualitative study with healthcare professionals in Lebanon and Quebec as case studies, to highlight the relevance of cultural contexts and to explore the concerns that should be taken into account for an ethical implementation of NIPT. METHODS: We conducted semi-structured interviews with 20 healthcare professionals (HCPs), 10 from each country, practicing in the field of prenatal screening and follow up diagnostic testing, including obstetricians and gynecologists, nurses, medical geneticists and, genetic counselors. We aimed to 1) explore HCPs' perceptions and views regarding issues raised by NIPT and 2) to shed light on ways in which the introduction of the same technology (NIPT) in two different contexts (Lebanon and Quebec) raises common and different challenges that are influenced by the cultural norms and legal policies in place. RESULTS: We identified challenges to the ethical implementation of NIPT. Some are common to both contexts, including financial/economic, social, and organizational/ educational challenges. Others are specific to each context. For example, challenges for Lebanon include abortion policy and financial profit, and in Quebec challenges include lobbying by Disability rights associations and geographical access to NIPT. CONCLUSIONS: Our findings highlight the need to consider specific issues related to various cultural contexts when developing frameworks that can guide an ethically sound implementation of NIPT. Further, they show that healthcare professional education and training remain paramount in order to provide NIPT counseling in a way that supports pregnant women and couples' choice.


Assuntos
Atitude do Pessoal de Saúde , Testes Genéticos/ética , Diagnóstico Pré-Natal/ética , Adulto , Aneuploidia , Características Culturais , Feminino , Humanos , Líbano , Gravidez , Pesquisa Qualitativa , Quebeque
12.
Clin Nutr ; 39(2): 440-446, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-30799191

RESUMO

BACKGROUND & AIMS: Vitamin D is thought to be involved in the pathogenesis of preeclampsia. To evaluate the relationship between vitamin D insufficiency in the first trimester of pregnancy and preeclampsia. METHODS: Nested case-control study (FEPED study) in type 3 obstetrical units. Pregnant women from 10 to 15 WA. For each patient with preeclampsia, 4 controls were selected from the cohort and matched by parity, skin color, maternal age, season and BMI. The main outcome measure was serum 25(OH)D status in the first trimester. RESULTS: 83 cases of preeclampsia were matched with 319 controls. Mean 25(OH)D levels in the first trimester were 20.1 ± 9.3 ng/mL in cases and 22.3 ± 11.1 ng/mL in controls (p = 0.09). The risk for preeclampsia with 25(OH)D level ≥30 ng/mL in the first trimester was decreased, but did not achieve statistical significance (OR, 0.57; 95% CI, 0.30-1.01; p = 0.09). High 25(OH)D during the 3rd trimester was associated with a significantly decreased risk of preeclampsia (OR, 0.43; 95%CI, 0.23-0.80; p = 0.008). When women with 25(OH)D levels <30 ng/mL both in the first and 3rd trimesters ("low-low") were taken as references, OR for preeclampsia was 0.59 (95% CI, 0.31-1.14; p = 0.12) for "low-high" or "high-low" women and 0.34 (95% CI, 0.13-0.86; p = 0.02) for "high-high" women. CONCLUSIONS: No significant association between preeclampsia and vitamin D insufficiency in the first trimester was evidenced. However, women with vitamin D sufficiency during the 3rd trimester and both in the first and 3rd trimesters had a significantly lower risk of preeclampsia.


Assuntos
Pré-Eclâmpsia/sangue , Pré-Eclâmpsia/epidemiologia , Vitamina D/sangue , Adulto , Bélgica/epidemiologia , Estudos de Casos e Controles , Estudos de Coortes , Feminino , França/epidemiologia , Humanos , Gravidez , Primeiro Trimestre da Gravidez , Estudos Prospectivos , Medição de Risco
13.
J Obstet Gynaecol Can ; 41(6): 782-791, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30738740

RESUMO

OBJECTIVE: This study sought to assess Canadian pregnant women's and their partners' preferences for information about non-invasive prenatal testing (NIPT). METHODS: Pregnant women and their partners across Canada were surveyed as part of the Personalized Genomics for prenatal Aneuploidy Screening Using maternal blood (PEGASUS) study. RESULTS: A total of 882 pregnant women and 395 partners participated. Women preferred being informed by a physician (77.2%). They preferred getting information ahead of time, except for information about resources for families with Down syndrome, which they preferred getting with test results. More than half thought that written consent is important (63.7%) and could decide whether to do NIPT on the day they received the information (54.9%). Women preferred to be informed of results by telephone (43.7%) or in person (28%), but they preferred in person if they were considered at high risk for Down syndrome on the basis of the results (76%). The partner was the person whose input was considered most important (62.6%). Partners' preferences were similar, except that partners tended to want information later (at the time of the test or with the results) and felt that their opinion was not considered as highly by health professionals. CONCLUSION: Canadian women want information about NIPT early, in person, by a knowledgeable physician. Partners also want to be informed and involved in the decision-making process.


Assuntos
Atitude Frente a Saúde , Síndrome de Down/diagnóstico , Teste Pré-Natal não Invasivo , Educação de Pacientes como Assunto , Preferência do Paciente , Gestantes , Cônjuges , Adulto , Canadá , Comunicação , Aconselhamento , Tomada de Decisão Compartilhada , Feminino , Humanos , Consentimento Livre e Esclarecido , Masculino , Autonomia Pessoal , Relações Médico-Paciente , Gravidez , Inquéritos e Questionários
14.
BMC Pregnancy Childbirth ; 19(1): 22, 2019 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-30630440

RESUMO

BACKGROUND: Canadian policies regarding the implementation and public coverage of non-invasive prenatal testing (NIPT) are heterogeneous and shifting, with NIPT being publicly covered for high-risk pregnancies in some provinces, but not others. Such a diverse and evolving policy landscape provides fertile ground for examining the preferences of pregnant women, their partners, and health professionals regarding the implementation and coverage of NIPT by the public healthcare system, as well as the factors influencing their preferences, which is what the present study does. METHODS: In this paper, we report the results of three-large scale Canadian surveys, in which 882 pregnant women, 395 partners of pregnant women, and 184 healthcare professionals participated. RESULTS: The paper focuses on preferences regarding how and when NIPT should be used, as well as the factors influencing these preferences, and how coverage for NIPT should be provided. These are correlated with respondents' levels of knowledge about Down syndrome and testing technologies and with their stated intended use of NIPT results. CONCLUSION: Salient is the marked difference between the preferences of prospective parents and those of healthcare professionals, which has potential implications for Canadian policy regarding NIPT implementation and insurance coverage.


Assuntos
Atitude do Pessoal de Saúde , Ácidos Nucleicos Livres/sangue , Síndrome de Down/diagnóstico , Preferência do Paciente , Gestantes , Diagnóstico Pré-Natal , Síndrome da Trissomia do Cromossomo 13/diagnóstico , Síndrome da Trissomía do Cromossomo 18/diagnóstico , Adulto , Canadá , Síndrome de Down/sangue , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Política de Saúde , Humanos , Cobertura do Seguro , Masculino , Pessoa de Meia-Idade , Gravidez , Gravidez de Alto Risco , Sensibilidade e Especificidade , Cônjuges , Inquéritos e Questionários , Síndrome da Trissomia do Cromossomo 13/sangue , Síndrome da Trissomía do Cromossomo 18/sangue
15.
Clin Nutr ; 38(5): 2136-2144, 2019 10.
Artigo em Inglês | MEDLINE | ID: mdl-30224306

RESUMO

BACKGROUND & AIMS: Vitamin D status during pregnancy and in newborns has never been studied in France. This study aims at determining the vitamin D status during the first and third trimesters of pregnancy (T1, T3) and in cord blood (CB) in the middle-north of France. METHODS: We conducted a prospective cohort study in five French centers (latitude 47.22 to 48.86°N). Serum 25(OH)-vitamin D (25(OH)D) concentrations were measured using a radioimmunoassay during T1, T3 and in CB. According to the French guidelines, pregnant women received cholecalciferol, 100,000 IU, in the seventh month. RESULTS: Between April 2012 and July 2014, 2832 women were included, of whom 2803 were analyzed (mean ± SD age: 31.5 ± 5.0 years; phototypes 5-6: 21.8%). Three and 88.6% of participants received supplementation during the month before inclusion and in the seventh month, respectively. At T1, T3, and CB, mean 25(OH)D concentrations were 21.9 ± 10.4, 31.8 ± 11.5, and 17.0 ± 7.2 ng/mL, respectively, and 25(OH)D was <20 ng/mL in 46.5%, 14.0%, and 68.5%, respectively. At T1, body mass index ≥25 kg/m2, dark phototypes, sampling outside summer, and no supplementation before inclusion were independently associated with vitamin D insufficiency (25(OH)D < 20 ng/mL). Women who received cholecalciferol supplementation in month 7 had higher 25(OH)D at T3 than non-supplemented women (32.5 ± 11.4 versus 25.8 ± 11.4 ng/mL, p = <0.001) and marginally higher 25(OH)D in CB (17.2 ± 7.2 versus 15.5 ± 7.1 ng/mL, p = 0.004). CONCLUSIONS: Despite the recommended supplementation, vitamin D insufficiency is frequent during pregnancy and in newborns in France.


Assuntos
Sangue Fetal/química , Complicações na Gravidez/epidemiologia , Gravidez , Deficiência de Vitamina D/epidemiologia , Vitamina D/sangue , Adulto , Estudos de Coortes , Suplementos Nutricionais , Feminino , França , Ganho de Peso na Gestação/fisiologia , Humanos , Recém-Nascido , Gravidez/sangue , Gravidez/estatística & dados numéricos , Complicações na Gravidez/tratamento farmacológico , Estudos Prospectivos , Vitamina D/administração & dosagem , Vitamina D/uso terapêutico , Deficiência de Vitamina D/tratamento farmacológico
16.
CMAJ Open ; 6(4): E513-E519, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30381324

RESUMO

BACKGROUND: Noninvasive prenatal testing is a recent technology that provides some genetic information about the fetus through the analysis of cell-free fetal DNA circulating in maternal blood. We aimed to identify the benefits, challenges and guiding ethical principles most relevant to the clinical integration of noninvasive prenatal testing in Canada, according to experts throughout the country. METHODS: We conducted a 3-round Delphi study involving Canadian experts of contemporary discussions about the ethical and societal implications of prenatal testing and genomic technologies. In round 1, we asked participants to identify clinical benefits and challenges related to the implementation of noninvasive prenatal testing in Canada, and the ethical principles they think should guide it. In round 2, we asked participants to select the most important elements stated by their peers. In round 3, participants were informed of the aggregated results from round 2, and invited to revise or confirm their selection. RESULTS: Round 1 had a participation rate of 20.2%, and involved 61 participants. Subsequent rounds 2 and 3 had retention rates of 95.1% (n = 58) and 84.5% (n = 49), respectively. Through these discussions, we identified 3 lists of benefits (n = 10), challenges (n = 27), and ethical principles (n = 16) prioritized by Canadian experts as being most relevant to the implementation of noninvasive prenatal testing in Canada. INTERPRETATION: Although multiple and diverse potential issues were identified, Canadian experts agreed on 2 sets of requirements for the responsible implementation of noninvasive prenatal testing in Canada. Interdisciplinary appraisals may be instrumental to responsible policy-making related to the implementation of noninvasive prenatal testing in Canada.

17.
AJOB Empir Bioeth ; 9(2): 99-111, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29847254

RESUMO

Noninvasive prenatal testing (NIPT), based on the detection of cell-free fetal DNA in maternal blood, has transformed the landscape of prenatal care by offering clinical benefits (noninvasive, high specificity and sensitivity, early detection of abnormalities) compared to existing prenatal screening tests. NIPT has expanded rapidly and is currently commercially available in most of the world. As NIPT spreads globally, culturally sensitive and ethically sound implementation will require policies that take into consideration the social and cultural context of prenatal testing decisions. In a Western context, the main ethical argument for providing access and public funding of prenatal tests is the promotion of reproductive autonomy (also referred to as "procreative liberty" and "reproductive freedom"), by enabling pregnant women and couples to access information about the fetus in order to choose a certain course of action for pregnancy management (continuation of pregnancy and preparation for birth or termination). So how is the framework of reproductive autonomy operationalized in non-Western cultural contexts? We used Quebec, Canada, and Beirut, Lebanon, for case studies to explore what ethical considerations related to reproductive autonomy should guide the implementation of the test in various cultural contexts. To answer this question, we conducted a qualitative study to (1) explore the perceptions, values, and preferences of pregnant women and their partners about NIPT and (2) examine how these values and perceptions influence reproductive autonomy and decision making in relation to NIPT in these two different cultural settings, Lebanon and Quebec. Our findings may guide health care professionals in providing counseling and in helping women and their partners make better informed prenatal testing decisions. Further, at a policy level, such understanding might inform the development of local guidelines and policies that are appropriate to each context.


Assuntos
Anormalidades Congênitas/diagnóstico , Comparação Transcultural , Aconselhamento Genético/ética , Testes Genéticos/ética , Gestantes , Diagnóstico Pré-Natal/ética , Adulto , Anormalidades Congênitas/psicologia , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Política de Saúde , Humanos , Líbano/epidemiologia , Preferência do Paciente , Autonomia Pessoal , Gravidez , Gestantes/etnologia , Gestantes/psicologia , Diagnóstico Pré-Natal/psicologia , Quebeque/epidemiologia
18.
J Clin Psychiatry ; 79(2)2018.
Artigo em Inglês | MEDLINE | ID: mdl-29617065

RESUMO

OBJECTIVE: Autism and certain associated behaviors including self-injurious behaviors (SIB) and atypical pain reactivity have been hypothesized to result from excessive opioid activity. The objective of this study was to examine the relationships between SIB, pain reactivity, and ß-endorphin levels in autism. METHODS: Study participants were recruited between 2007 and 2012 from day care centers and included 74 children and adolescents diagnosed with autism (according to DSM-IV-TR, ICD-10, and CFTMEA) and intellectual disability. Behavioral pain reactivity and SIB were assessed in 3 observational situations (parents at home, 2 caregivers at day care center, a nurse and child psychiatrist during blood drawing) using validated quantitative and qualitative scales. Plasma ß-endorphin concentrations were measured in 57 participants using 2 different immunoassay methods. RESULTS: A high proportion of individuals with autism displayed SIB (50.0% and 70.3% according to parental and caregiver observation, respectively). The most frequent types of SIB were head banging and hand biting. An absence or decrease of overall behavioral pain reactivity was observed in 68.6% and 34.2% of individuals with autism according to parental and caregiver observation, respectively. Those individuals with hyporeactivity to daily life accidental painful stimuli displayed higher rates of self-biting (P < .01, parental evaluation). No significant correlations were observed between ß-endorphin level and SIB or pain reactivity assessed in any of the 3 observational situations. CONCLUSIONS: The absence of any observed relationships between ß-endorphin level and SIB or pain reactivity and the conflicting results of prior opioid studies in autism tend to undermine support for the opioid theory of autism. New perspectives are discussed regarding the relationships found in this study between SIB and hyporeactivity to pain.


Assuntos
Transtorno Autístico , Sintomas Comportamentais/diagnóstico , Deficiência Intelectual , Dor/psicologia , Comportamento Autodestrutivo , beta-Endorfina/sangue , Adolescente , Transtorno Autístico/sangue , Transtorno Autístico/diagnóstico , Transtorno Autístico/psicologia , Técnicas de Observação do Comportamento/métodos , Criança , Correlação de Dados , Manual Diagnóstico e Estatístico de Transtornos Mentais , Feminino , Humanos , Deficiência Intelectual/sangue , Deficiência Intelectual/diagnóstico , Masculino , Comportamento Autodestrutivo/diagnóstico , Comportamento Autodestrutivo/etiologia
19.
Hepatology ; 64(4): 1121-35, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27115099

RESUMO

UNLABELLED: Identification of new treatments for relapsing pediatric cancer is an unmet clinical need and a societal challenge. Liver cancer occurrence in infancy, 1.5 for million children per year, falls far below the threshold of interest for dedicated drug development programs, and this disease is so rare that it is very difficult to gather enough children into a phase II clinical trial. Here, we present the establishment of an unprecedented preclinical platform of 24 pediatric liver cancer patient-derived xenografts (PLC-PDXs) from 20 hepatoblastomas (HBs), 1 transitional liver cell tumor (TCLT), 1 hepatocellular carcinoma, and 2 malignant rhabdoid tumors. Cytogenetic array and mutational analysis of the parental tumors and the corresponding PLC-PDXs show high conservation of the molecular features of the parental tumors. The histology of PLC-PDXs is strikingly similar to that observed in primary tumors and recapitulates the heterogeneity of recurrent disease observed in the clinic. Tumor growth in the mouse is strongly associated with elevated circulating alpha-fetoprotein (AFP), low rate of necrosis/fibrosis after treatment, and gain of chromosome 20, all indicators of resistance to chemotherapy and poor outcome. Accordingly, the ability of a tumor to generate PLC-PDX is predictive of poor prognosis. Exposure of PLC-PDXs to standards of care or therapeutic options already in use for other pediatric malignancies revealed unique response profiles in these models. Among these, the irinotecan/temozolomide combination induced strong tumor regression in the TCLT and in a model derived from an AFP-negative relapsing HB. CONCLUSION: These results provide evidence that PLC-PDX preclinical platform can strongly contribute to accelerate the identification and diversification of anticancer treatment for aggressive subtypes of pediatric liver cancer. (Hepatology 2016;64:1121-1135).


Assuntos
Neoplasias Hepáticas/tratamento farmacológico , Animais , Criança , Feminino , Xenoenxertos , Humanos , Masculino , Camundongos , Recidiva Local de Neoplasia , Transplante de Neoplasias , Neoplasias Experimentais , Prognóstico
20.
Appl Clin Genet ; 9: 15-26, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26893576

RESUMO

Genomics-based non-invasive prenatal screening using cell-free DNA (cfDNA screening) was proposed to reduce the number of invasive procedures in current prenatal diagnosis for fetal aneuploidies. We review here the clinical and ethical issues of cfDNA screening. To date, it is not clear how cfDNA screening is going to impact the performances of clinical prenatal diagnosis and how it could be incorporated in real life. The direct marketing to users may have facilitated the early introduction of cfDNA screening into clinical practice despite limited evidence-based independent research data supporting this rapid shift. There is a need to address the most important ethical, legal, and social issues before its implementation in a mass setting. Its introduction might worsen current tendencies to neglect the reproductive autonomy of pregnant women.

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