{"id":116227,"date":"2025-09-25T11:00:25","date_gmt":"2025-09-25T02:00:25","guid":{"rendered":"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/"},"modified":"2025-09-25T11:08:27","modified_gmt":"2025-09-25T02:08:27","slug":"nipt-downsyndrome-effectiveness","status":"publish","type":"post","link":"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en","title":{"rendered":"Effectiveness of NIPT in Risk Assessment for Down Syndrome"},"content":{"rendered":"\n<p>Introduction<\/p>\n\n\n\n<p>Assessing the risk of fetal chromosomal abnormalities during pregnancy is a critical concern for expectant mothers. Among these, <strong>Down syndrome (Trisomy 21)<\/strong> draws the most attention. It results from the presence of an extra 21st chromosome and may be associated with physical characteristics, developmental delays, and intellectual disabilities. In recent years, <strong>Non-Invasive Prenatal Testing (<a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a>)<\/strong> has been shown to offer high accuracy in assessing the risk of Down syndrome. This article explains the fundamentals, effectiveness, comparison with conventional methods, clinical applications, and points to note about <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a>.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#1_What_is_Down_Syndrome\" >1. What is Down Syndrome<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#2_What_is_NIPT\" >2. What is NIPT<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#2%E2%80%911_How_It_Works\" >2\u20111. How It Works<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#2%E2%80%912_When_Its_Performed\" >2\u20112. When It&#8217;s Performed<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#3_Effectiveness_of_NIPT\" >3. Effectiveness of NIPT<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#3%E2%80%911_Comparison_with_Conventional_Tests\" >3\u20111. Comparison with Conventional Tests<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#4_Clinical_Significance_of_NIPT\" >4. Clinical Significance of NIPT<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#4%E2%80%911_Safety_for_Mother_and_Fetus\" >4\u20111. Safety for Mother and Fetus<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#4%E2%80%912_Contribution_to_Pregnancy_Management\" >4\u20112. Contribution to Pregnancy Management<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#5_Limitations_and_Considerations\" >5. Limitations and Considerations<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#5%E2%80%911_Not_a_Diagnostic_Test\" >5\u20111. Not a Diagnostic Test<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#5%E2%80%912_Risk_of_False_Negatives_Positives\" >5\u20112. Risk of False Negatives \/ Positives<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#5%E2%80%913_Ethical_and_Psychological_Concerns\" >5\u20113. Ethical and Psychological Concerns<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#6_Availability_and_Cost_of_NIPT\" >6. Availability and Cost of NIPT<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#7_Summary_So_Far\" >7. Summary So Far<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#8_Importance_of_Genetic_Counseling\" >8. Importance of Genetic Counseling<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#9_Support_for_Children_with_Down_Syndrome\" >9. Support for Children with Down Syndrome<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#10_Future_Outlook\" >10. Future Outlook<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#11_Conclusion\" >11. Conclusion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\/#References\" >References<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_What_is_Down_Syndrome\"><\/span>1. What is Down Syndrome<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Down syndrome, medically termed \u201cTrisomy 21,\u201d is a chromosomal abnormality. Humans normally have 46 chromosomes, but the presence of a third copy of chromosome 21 leads to this condition. Main features include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Distinct facial features (upward-slanting eyes, flat nasal bridge, etc.)<\/li>\n\n\n\n<li>Developmental delays and intellectual disabilities<\/li>\n\n\n\n<li>Increased risk of complications such as congenital heart defects<\/li>\n<\/ul>\n\n\n\n<p>The risk of Down syndrome increases with maternal age, especially in women over 35. However, younger women are not risk-free, so accurate risk assessment is essential.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_What_is_NIPT\"><\/span>2. What is NIPT<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> is a test that analyzes <strong>fetal-derived cell-free DNA (cfDNA)<\/strong> present in maternal blood to assess the risk of chromosomal abnormalities. Unlike invasive procedures like amniocentesis or chorionic villus sampling, <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> requires only a blood draw, making it extremely low-risk for both mother and fetus.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2%E2%80%911_How_It_Works\"><\/span>2\u20111. How It Works<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> detects an excess or shortage of specific chromosomes by analyzing <strong>cell-free fetal DNA (cffDNA)<\/strong> in the mother&#8217;s blood. It mainly targets:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Trisomy 21 (Down syndrome)<\/li>\n\n\n\n<li>Trisomy 18 (Edwards syndrome)<\/li>\n\n\n\n<li>Trisomy 13 (Patau syndrome)<\/li>\n<\/ul>\n\n\n\n<p>The test is increasingly used to screen for <strong>sex chromosome abnormalities and microdeletion syndromes<\/strong> as well.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2%E2%80%912_When_Its_Performed\"><\/span>2\u20112. When It&#8217;s Performed<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> can be conducted from <strong>week 10 of pregnancy<\/strong>. <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/early-nipt-august-only\/\">Early<\/a> detection allows for better pregnancy management and planning of any necessary follow-up testing.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Effectiveness_of_NIPT\"><\/span>3. Effectiveness of NIPT<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Multiple clinical studies have reported that <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> demonstrates <strong>extremely high sensitivity and specificity<\/strong> in Down syndrome screening.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sensitivity<\/strong>: Nearly 99% or higher<br>\u2002\u2192 Nearly all fetuses with Down syndrome will test positive.<\/li>\n\n\n\n<li><strong>Specificity<\/strong>: Over 99%<br>\u2002\u2192 The chance of a false positive in a healthy fetus is very low.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3%E2%80%911_Comparison_with_Conventional_Tests\"><\/span>3\u20111. Comparison with Conventional Tests<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Traditional screening (e.g., maternal serum markers, ultrasound) typically shows 70\u201390% sensitivity and around 90% specificity. In contrast, <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> has a <strong>much lower false positive rate<\/strong> and offers a more reliable screening option before considering invasive testing.<\/p>\n\n\n\n<p><em>Reference: Bianchi DW et al., NEJM. 2014;370:799\u2013808.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Clinical_Significance_of_NIPT\"><\/span>4. Clinical Significance of NIPT<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4%E2%80%911_Safety_for_Mother_and_Fetus\"><\/span>4\u20111. Safety for Mother and Fetus<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Amniocentesis and CVS carry a <strong>0.1\u20130.3% risk of miscarriage<\/strong>. Since <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> is conducted through a blood sample, the <strong>risk of miscarriage is nearly zero<\/strong>, and the physical and psychological burden on the mother is significantly reduced.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4%E2%80%912_Contribution_to_Pregnancy_Management\"><\/span>4\u20112. Contribution to Pregnancy Management<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Getting early <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> results helps with <strong>timely planning<\/strong>. A <strong>positive<\/strong> result may lead to confirmatory testing and coordinated care with the medical team. A <strong>negative<\/strong> result provides <strong>psychological reassurance<\/strong> and supports the decision to continue the pregnancy with confidence.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Limitations_and_Considerations\"><\/span>5. Limitations and Considerations<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5%E2%80%911_Not_a_Diagnostic_Test\"><\/span>5\u20111. Not a Diagnostic Test<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> is a <strong>screening test<\/strong>, not a diagnostic tool. A <strong>positive<\/strong> result must be followed by <strong>invasive diagnostic procedures<\/strong> (like amniocentesis).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5%E2%80%912_Risk_of_False_Negatives_Positives\"><\/span>5\u20112. Risk of False Negatives \/ Positives<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>In cases where the <strong>fetal fraction<\/strong> (percentage of fetal DNA in the mother\u2019s blood) is low, the results may be less accurate. Detection may also be less reliable in <strong>multiple pregnancies<\/strong> or specific chromosomal abnormalities.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5%E2%80%913_Ethical_and_Psychological_Concerns\"><\/span>5\u20113. Ethical and Psychological Concerns<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Results can influence critical decisions during pregnancy. <strong>Genetic counseling<\/strong> is essential for pre-test education and post-test support, helping patients understand the implications of their results.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Availability_and_Cost_of_NIPT\"><\/span>6. Availability and Cost of NIPT<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>In Japan, <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> has been available clinically since <strong>2013<\/strong> and is now offered in many medical institutions. The cost is typically <strong>\u00a5150,000\u2013200,000<\/strong>, depending on the provider. It is <strong>not covered by national insurance<\/strong> and is considered an out-of-pocket expense, conducted based on the doctor\u2019s discretion and patient request.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"7_Summary_So_Far\"><\/span>7. Summary So Far<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> is a <strong>highly accurate and low-risk<\/strong> screening method for assessing Down syndrome risk, offering major advantages over traditional methods. Because it can be performed early in pregnancy, it allows for timely decision-making, mental relief for expectant mothers, and better pregnancy management by healthcare providers. However, since it is <strong>not diagnostic<\/strong>, <strong>positive<\/strong> results require <strong>confirmatory testing<\/strong> and appropriate genetic counseling.<\/p>\n\n\n\n<p>With ongoing improvements in accuracy and an expanding scope of use, <strong><a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> is expected to become a central tool in prenatal screening.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"8_Importance_of_Genetic_Counseling\"><\/span>8. Importance of Genetic Counseling<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Genetic counseling is <strong>highly recommended<\/strong> for those undergoing <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a>. Counseling provides:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Clear explanation of <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a>\u2019s principles, accuracy, and limitations<\/li>\n\n\n\n<li>Support for decision-making based on test results<\/li>\n\n\n\n<li>Guidance for confirmatory testing if necessary<\/li>\n\n\n\n<li>Information on medical and social support resources before and after birth<\/li>\n<\/ul>\n\n\n\n<p>Counseling helps patients understand their test results and reduces anxiety. If a positive result is received, it\u2019s vital for families to understand their options regarding pregnancy continuation, delivery, and child-rearing.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"640\" height=\"427\" src=\"\/nipt\/wp-content\/uploads\/2025\/09\/32617927_s-4.webp\" alt=\"\u533b\u8005\" class=\"wp-image-116067\"\/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"9_Support_for_Children_with_Down_Syndrome\"><\/span>9. Support for Children with Down Syndrome<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> not only helps with <strong>prenatal assessment<\/strong>, but also contributes to planning <strong>postnatal support<\/strong>. Children with Down syndrome can live high-quality lives with proper care and intervention:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/early-nipt-august-only\/\">Early<\/a> diagnosis and treatment of heart or gastrointestinal issues<\/li>\n\n\n\n<li>Physical, occupational, and speech therapy<\/li>\n\n\n\n<li>Special education and community-based social support<\/li>\n<\/ul>\n\n\n\n<p>Identifying the risk prenatally makes it easier to prepare the necessary medical, educational, and social frameworks.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"10_Future_Outlook\"><\/span>10. Future Outlook<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Currently, <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> focuses on detecting <strong>major trisomies<\/strong> (21, 18, 13), but future advancements may expand its application to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sex chromosome and microdeletion syndromes<\/strong><\/li>\n\n\n\n<li><strong>Multiple pregnancies and IVF pregnancies<\/strong><\/li>\n\n\n\n<li><strong>Personalized prenatal risk management<\/strong><\/li>\n<\/ul>\n\n\n\n<p>With improvements in analysis technology, we expect <strong>reduced false positives and negatives<\/strong>, and <strong>broader use among low-risk pregnancies<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"11_Conclusion\"><\/span>11. Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> offers superior <strong>accuracy and safety<\/strong> in prenatal risk assessment for Down syndrome compared to traditional screening methods. While it is <strong>not a diagnostic tool<\/strong>, its ability to identify risk early contributes significantly to pregnancy care, postnatal planning, and peace of mind for expectant mothers. Combined with genetic counseling, it empowers informed decisions and better health outcomes.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> is poised to become the <strong>core method<\/strong> for prenatal screening, expanding its reach as technology continues to evolve. It is an essential tool in delivering <strong>personalized, accurate, and safe<\/strong> information for pregnancy management and family planning.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"References\"><\/span><strong>References<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Gil MM et al. Implementation of <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> in clinical practice: Large-scale study. <em>Ultrasound Obstet Gynecol<\/em>. 2015.<\/p>\n\n\n\n<p>Bianchi DW et al. DNA sequencing versus standard prenatal aneuploidy screening. <em>N Engl J Med<\/em>. 2014.<\/p>\n\n\n\n<p>Norton ME et al. Cell-free DNA analysis for trisomy. <em>N Engl J Med<\/em>. 2015.<\/p>\n","protected":false},"excerpt":{"rendered":"Introduction Assessi&#8230;\n <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt-downsyndrome-effectiveness\/?lang=en\">\u7d9a\u304d\u3092\u8aad\u3080<\/a>","protected":false},"author":122,"featured_media":116219,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[97],"tags":[],"class_list":["post-116227","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/posts\/116227","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/users\/122"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/comments?post=116227"}],"version-history":[{"count":2,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/posts\/116227\/revisions"}],"predecessor-version":[{"id":116244,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/posts\/116227\/revisions\/116244"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/media\/116219"}],"wp:attachment":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/media?parent=116227"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/categories?post=116227"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/tags?post=116227"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}