Prenatal Tests

Since its introduction in 2012, cell-free (cf) DNA based Non-Invasive Prenatal Testing (NIPT) has been employed to test for fetal chromosome abnormalities, and gene mutations that lead to a variety of genetic conditions, by millions of pregnant women, in more than 90 countries worldwide. With Noninvasive Prenatal Testing (NIPT): Applied Genomics in Prenatal Screening and Diagnosis, Dr Lieve Page-Christiaens and Dr Hanns-Georg Klein have compiled the first authoritative volume on cfDNA NIPT methods and their clinical implementation. Provides a thorough, practical examination of the history of NIPT, NIPT laboratory techniques and bioinformatics, NIPT screening and diagnostics for a wide range of disorders and birth defects Presents leading, international experts who discuss the application of NIPT in early screening for common aneuploidies, fetal chromosome anomalies, autosomal trisomies, fetal blood group typing, and maternal constitutional and acquired copy number variants Includes full color imagery that enhances concept illustration, along with detailed descriptions of the benefits (and limitations) of NIPT Offers clinicians, researchers, genetic counselors and reproductive specialists of all kinds the required background information, methodologies and essential patient counseling techniques

As prenatal tests proliferate, the medical and broader communities perceive that such testing is a logical extension of good prenatal care—it helps parents have healthy babies. But prenatal tests have been criticized by the disability rights community, which contends that advances in science should be directed at improving their lives, not preventing them. Used primarily to decide to abort a fetus that would have been born with mental or physical impairments, prenatal tests arguably reinforce discrimination against and misconceptions about people with disabilities. In these essays, people on both sides of the issue engage in an honest and occasionally painful debate about prenatal testing and selective abortion. The contributors include both people who live with and people who theorize about disabilities, scholars from the social sciences and humanities, medical geneticists, genetic counselors, physicians, and lawyers. Although the essayists don't arrive at a consensus over the disability community's objections to prenatal testing and its consequences, they do offer recommendations for ameliorating some of the problems associated with the practice.

An argument that more people should have children with Down syndrome, written from a pro-choice, disability-positive perspective. The rate at which parents choose to terminate a pregnancy when prenatal tests indicate that the fetus has Down syndrome is between 60 and 90 percent. In Choosing Down Syndrome, Chris Kaposy offers a carefully reasoned ethical argument in favor of choosing to have such a child. Arguing from a pro-choice, disability-positive perspective, Kaposy makes the case that there is a common social bias against cognitive disability that influences decisions about prenatal testing and terminating pregnancies, and that more people should resist this bias by having children with Down syndrome. Drawing on accounts by parents of children with Down syndrome, and arguing for their objectivity, Kaposy finds that these parents see themselves and their families as having benefitted from having a child with Down syndrome. To counter those who might characterize these accounts as based on self-deception or expressing adaptive preference, Kaposy cites supporting evidence, including divorce rates and observational studies showing that families including children with Down syndrome typically function well. Himself the father of a child with Down syndrome, Kaposy argues that cognitive disability associated with Down syndrome does not lead to diminished well-being. He argues further that parental expectations are influenced by neoliberal ideologies that unduly focus on the supposed diminished economic potential of a person with Down syndrome. Kaposy does not advocate restricting access to abortion or prenatal testing for Down syndrome, and he does not argue that it is ethically mandatory in all cases to give birth to a child with Down syndrome. People should be free to make important decisions based on their values. Kaposy's argument shows that it may be consistent with their values to welcome a child with Down syndrome into the family.

Parents-to-be are faced with important and very difficult decisions to make about prenatal testing. This book provides all the information that they need - in clear, accessible language - in order to make informed choices.

This second edition volume expands on the first edition with more detailed methodologies on prenatal testing and diagnosis, and also covers next-generation sequencing techniques. The chapters in this book are divided into three sections: preimplantation genetic testing, traditional prenatal testing, and non-invasive prenatal testing. This book covers topics such as molecular testing for preimplantation genetic diagnosis of single gene disorders; DNA extraction from various types of prenatal specimens; prenatal diagnosis of cystic fibrosis and Tay-Sachs disease; chromosomal SNP microarrays; and isolation of cell-free DNA from maternal plasma. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Practical and thorough, Prenatal Diagnosis, Second Edition is a valuable resource for any researcher interested in reproducing these techniques in their clinical laboratories.

This report gives a simplified description of the scientific fundamentals of genetic testing and describes its present applications; establishes broad privacy principles to guide both the public and private sectors on testing matters; examines specifically how the Privacy Act regulates genetic testing by government institutions; and addresses the growing need to consider regulating private sector genetic testing. A summary of positions taken by other countries and international organizations on privacy and genetic testing is also included.

Raising hopes for disease treatment and prevention, but also the specter of discrimination and "designer genes," genetic testing is potentially one of the most socially explosive developments of our time. This book presents a current assessment of this rapidly evolving field, offering principles for actions and research and recommendations on key issues in genetic testing and screening. Advantages of early genetic knowledge are balanced with issues associated with such knowledge: availability of treatment, privacy and discrimination, personal decision-making, public health objectives, cost, and more. Among the important issues covered: Quality control in genetic testing. Appropriate roles for public agencies, private health practitioners, and laboratories. Value-neutral education and counseling for persons considering testing. Use of test results in insurance, employment, and other settings.

The Human Genome project has enlarged the audience for information about genetic testing for beyond the population of expectant parents, and the authors incorporate the most recent prenatal testing information in this updated version of their important book, as well as discuss the perils and promises of the Human Genome Project. Using sociological research, the book analyzes the social-psychological and ethical implications of invasive prenatal testing, particularly CVS and amniocentesis. Among the issues covered are changes in the genetic counseling profession and in client demographics; the challenge of nondirective genetic counseling; decisions on testing and on which test to have; the timing and risks of the procedures; abortion and grief; the ethics of sex selection: potential issues and abuses of genetic knowledge; and policy and ethical implications. [4e de couverture].

"For pregnant women in the 1990s, technological developments have ushered in new and expanding reproductive genetic testing options. Some herald these procedures as advances providing women with previously unavailable information about their pregnancies. Others contend that with this surge of information come increasing and perhaps unwarranted obligations: while some women have greater knowledge about their pregnancies, they also face far more complex decisions and a greater pressure to do as much as is technologically possible to ensure the birth of a healthy child." "This book focuses on the major women's issues surrounding the development and application of reproductive genetic testing. Although much has been written about the biological safety and efficacy of these technologies, few publications have addressed their psychological, sociocultural, ethical, legal, and political impact on women and their experience of pregnancy." "The first of three sections provides the contextual framework in which the debate should be analyzed. The second section sets forth the philosophical foundations and complex ethical and legal questions that need to be addressed, and the final section delineates a variety of perspectives on the psychological and sociocultural issues raised by reproductive genetic testing. These fourteen essays on the cutting edge of the debate are essential reading for anyone interested in women's studies, human genetics, health law; and bioethics and prenatal care providers."--BOOK JACKET.Title Summary field provided by Blackwell North America, Inc. All Rights Reserved

Provides an explanation of all the tests available to expectant parents and clarifies the pros and cons of each type of test.