International Journal of Neonatal Screening最新文献

{"title":"Cost-Effectiveness of Newborn Screening for X-Linked Adrenoleukodystrophy in the Netherlands: A Health-Economic Modelling Study.","authors":"Rosalie C Martens, Hana M Broulikova, Marc Engelen, Stephan Kemp, Anita Boelen, Robert de Jonge, Judith E Bosmans, Annemieke C Heijboer","doi":"10.3390/ijns11030053","DOIUrl":"10.3390/ijns11030053","url":null,"abstract":"<p><p>X-linked adrenoleukodystrophy (ALD) is an inherited metabolic disorder that can cause adrenal insufficiency and cerebral ALD (cALD) in childhood. Early detection prevents adverse health outcomes and can be achieved by newborn screening (NBS) followed by monitoring disease progression. However, monitoring is associated with high costs. This study evaluates the cost-effectiveness of NBS for ALD in The Netherlands compared to no screening using a health economic model. A decision tree combined with a Markov model was developed to estimate societal costs, including screening costs, healthcare costs, and productivity losses of parents, and health outcomes over an 18-year time horizon. Model parameters were derived from the literature and expert opinion. A probabilistic sensitivity analysis (PSA) was performed to assess uncertainty. The screening costs of detecting one ALD case by NBS was EUR 40,630. Until the age of 18 years, the total societal cost per ALD case was EUR 120,779 for screening and EUR 62,914 for no screening. Screening gained an average of 1.7 QALYs compared with no screening. This resulted in an incremental cost-effectiveness ratio (ICER) of EUR 34,084 per QALY gained for screening compared to no screening. Although the results are sensitive to uncertainty surrounding costs and effectiveness due to limited data, NBS for ALD is likely to be cost-effective using a willingness-to-pay (WTP) threshold of EUR 50,000- EUR 80,000 per QALY gained.</p>","PeriodicalId":14159,"journal":{"name":"International Journal of Neonatal Screening","volume":"11 3","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12286135/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144698480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Promising Role of Intestinal Organoids in the Diagnostic Work-Up of Cystic Fibrosis Screen Positive Inconclusive Diagnosis/CFTR-Related Metabolic Syndrome (CFSPID/CRMS).","authors":"Noelia Rodriguez Mier, Marlies Destoop, Sacha Spelier, Anabela Santo Ramalho, Jeffrey M Beekman, François Vermeulen, Karin M de Winter-de Groot, Marijke Proesmans","doi":"10.3390/ijns11030052","DOIUrl":"10.3390/ijns11030052","url":null,"abstract":"<p><p>Cystic Fibrosis Screen Positive Inconclusive Diagnosis/CFTR-related Metabolic Syndrome (CFSPID/CRMS) presents a significant clinical challenge due to its variable diagnostic outcomes and uncertain disease progression. Current diagnostic strategies, including sweat chloride testing and genetic analysis fall short in delivering clear guidance for clinical decision-making and risk assessment. Here, we comment on the potential of CFTR functional tests in patient-derived intestinal organoids (PDIOs) to enhance early risk stratification in CFSPID/CRMS cases. Using four hypothetical cases based on real-world data, we illustrate diverse clinical trajectories: diagnosis of cystic fibrosis (CF), reclassification as a CFTR-related disorder (CFTR-RD), non-CF designation, and persistent diagnostic uncertainty. Organoid-based assays-such as forskolin-induced swelling (FIS), steady-state lumen area (SLA) analysis, and rectal organoid morphology analysis (ROMA)-offer functional insights into CFTR activity and drug responsiveness. Compared to existing CFTR functional tests, such as Intestinal Current Measurement (ICM) and Nasal Potential Difference (NPD), these assays are more accessible, highly reproducible, and when needed support personalized medicine approaches. PDIO-based assays could help identify infants at high risk of disease progression, facilitating earlier interventions while minimizing unnecessary follow-ups for those unlikely to develop CF-related symptoms. Although not yet widely implemented, these assays hold promise for refining CFSPID diagnostics and management. Future research should focus on establishing standardized protocols allowing validation of clinical utility.</p>","PeriodicalId":14159,"journal":{"name":"International Journal of Neonatal Screening","volume":"11 3","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12286166/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144698485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Training Primary Healthcare Professionals for Expanded Newborn Screening with Tandem Mass Spectrometry: Challenges for Community Genetics in Brazil.","authors":"Luzivan Costa Reis, Tassia Tonon, Marina Bernardes Acosta, Simone Martins de Castro, Vivian de Lima Spode Coutinho, Débora Gusmão Melo, Ida Vanessa Doederlein Schwartz","doi":"10.3390/ijns11030051","DOIUrl":"10.3390/ijns11030051","url":null,"abstract":"<p><p>In Brazil, dried blood spots (DBSs) for newborn screening (NBS) should be collected between the 3rd and 5th days of life at local Basic Health Units (BHUs). This study reports the experience of face-to-face training at BHUs in southern Brazil during a pilot study for tandem mass spectrometry (MS/MS) inclusion in the NBS program. The pilot project involved screening for 22 inborn errors of metabolism (IEMs). The professionals at the BHUs were instructed to carry out the following: (a) explain the study to parents or guardians; (b) collect additional DBS samples on a different collection card (research card); and (c) deliver results to families. In-person visits were conducted at all 137 BHUs. These visits included an overview of the pilot project and distribution of educational materials, including a list of the 22 IEMs and informational leaflets on MS/MS-based NBS. Among the 486 healthcare professionals who participated, 91.2% were women. Overall, 97.1% of the BHUs reported being satisfied with the project. Questions regarding IEMs were raised in 40.1% of BHUs, and 13.1% reported complaints about the research card due to its lighter texture and drying difficulty. Training primary healthcare professionals in IEMs remains an urgent priority in Brazil, particularly in the context of expanded NBS using MS/MS, since they are the frontline professionals in the NBS program.</p>","PeriodicalId":14159,"journal":{"name":"International Journal of Neonatal Screening","volume":"11 3","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12286192/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144698486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Qatar's National Expanded Metabolic Newborn Screening Program: Incidence and Outcomes.","authors":"Tala Jamaleddin, Karen El-Akouri, Sumaya Abiib, Rola Mitri, Mamatha Ramaswamy, Sara Musa, Rehab Ali, Noora Shahbeck, Hilal Al Rifai, Ghassan Abdoh, Tawfeg Ben-Omran, Osama Y Al-Dirbashi, Mashael Al-Shafai","doi":"10.3390/ijns11030050","DOIUrl":"10.3390/ijns11030050","url":null,"abstract":"<p><strong>Background: </strong>Newborn screening is an essential public health strategy that aims to detect a range of conditions, including inborn errors of metabolism, in neonates shortly after birth. The timely identification is crucial due to the asymptomatic nature of many conditions at birth, but which can lead to significant health complications if left untreated. Through this study, we aimed to investigate the incidence of IEMs screened by the Qatar National Newborn Screening Program.</p><p><strong>Methods: </strong>We retrospectively analyzed a total of 351,223 newborns screened from 2010 to 2023. The incidence for the studied IEMs was calculated and correlated with demographics, consanguinity, and family history. In addition, the diagnostic yield of different tests utilized was assessed.</p><p><strong>Results: </strong>Our study revealed a total of 318 positive cases with IEMs, and a significantly high incidence of 1:1105 for IEMs in Qatar. Classical Homocystinuria was the most frequently detected condition, with a cumulative incidence of 1:6754 live births, linked to the founder variant p. Arg336Cys in the <i>CBS</i> gene. Aminoacidopathies were the most prevalent category, followed by fatty acid oxidation disorders, organic acidurias, biotinidase deficiency, and urea cycle disorders. Genetic testing showed a high diagnostic yield of 90%. Of the 60 cases that underwent targeted variant testing, 98% were confirmed, while 90% of the 59 cases tested by single gene testing were confirmed.</p><p><strong>Conclusions: </strong>Our study provides the incidence rates of IEMs in Qatar and novel insights that could facilitate setting up/developing IEM incidence-reducing strategies and improving outcomes for affected newborns and their families.</p>","PeriodicalId":14159,"journal":{"name":"International Journal of Neonatal Screening","volume":"11 3","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12285972/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144698484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction: Hall et al. Oral and Poster Abstracts of the 13th ISNS European Regional Meeting. <i>Int. J. Neonatal Screen.</i> 2025, <i>11</i>, 21.","authors":"Kate Hall, Peter C J I Schielen, Dimitris Platis","doi":"10.3390/ijns11030049","DOIUrl":"10.3390/ijns11030049","url":null,"abstract":"<p><p>The authors wish to make the following correction to their paper published in the <i>International Journal of Neonatal Screening</i> [...].</p>","PeriodicalId":14159,"journal":{"name":"International Journal of Neonatal Screening","volume":"11 3","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12258152/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144626295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of the Effect of Demographic Variables on Lysosomal Enzyme Activities in the Missouri Newborn Screening Program.","authors":"Lacey Vermette, Jon Washburn, Tracy Klug","doi":"10.3390/ijns11020048","DOIUrl":"10.3390/ijns11020048","url":null,"abstract":"<p><p>Newborn screening laboratories are increasingly adding lysosomal storage disorders (LSDs), such as Mucopolysaccharidosis I (MPS I) and Pompe disease, to their screening panels. Without newborn screening, LSDs are frequently diagnosed only after the onset of symptoms; late detection can lead to profound and irreversible organ damage and mortality. While screening of these disorders has accelerated over the past five years, there is little published information regarding the potential correlation of demographic variables (age at sample collection, birthweight, gestational age, gender, etc.) with lysosomal enzyme activity. The Missouri State Public Health Laboratory prospectively screened more than 475,000 newborns for MPS I, Pompe disease, Gaucher disease, and Fabry disease between 15 January 2013 and 15 May 2018. This report investigates trends between several demographic variables and activities of four lysosomal enzymes: α-L-iduronidase (IDUA), acid α-glucosidase (GAA), acid β-glucocerebrosidase (GBA), and acid α-galactosidase (GLA). This information provides a valuable resource to newborn screening laboratories for the implementation of screening for lysosomal storage disorders and the establishment of screening cutoffs.</p>","PeriodicalId":14159,"journal":{"name":"International Journal of Neonatal Screening","volume":"11 2","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12193128/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144484320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment and Application of Acylcarnitines Summations as Auxiliary Quantization Indicator for Primary Carnitine Deficiency.","authors":"Haijuan Zhi, Siyu Chang, Ting Chen, Lili Liang, Wenjuan Qiu, Huiwen Zhang, Xuefan Gu, Lianshu Han","doi":"10.3390/ijns11020047","DOIUrl":"10.3390/ijns11020047","url":null,"abstract":"<p><strong>Background: </strong>Newborns are referred primary carnitine deficiency (PCD) when a low free carnitine (C0) concentration (<10 μmol/L) is detected, leading to high false-positive referrals. To improve the follow-up protocol for PCD, various acylcarnitines and the summations were comprehensively evaluated in the present study.</p><p><strong>Methods: </strong>A retrospective study was performed using samples due to low C0 concentration. Data were available for 72 patients with genetically confirmed PCD, whereafter C0 with the selected sum of (butyrylcarnitine (C4) + isovalerylcarnitine (C5)) was validated in an additional cohort study including about 80,000 samples.</p><p><strong>Results: </strong>In the discovery study, C4, acetylcarnitine (C2) and C5 exhibited significant discriminant power in distinguishing PCDs from NoPCDs. The area under the ROC curve (AUC) was 99.792% (C4), 98.715% (C2) and 98.620% (C5). The excellent performances in sensitivity, specificity, negative predictive value, positive predictive value (PPV) and accuracy indexes suggested that C4, C2 and C5 would be ideal auxiliary indicators in improving the diagnostic performance of C0 for PCD. Multivariate ROC curve-based exploratory analysis showed that C5, C4 and C2 were the most top-ranked features in differentiating PCDs from NoPCDs. AUC for C4 + C5 was the highest with a cutoff required for 100% sensitivity at 0.181 μmol/L. In the validation cohort, adding C4 + C5 in the NBS program could elevate PPV from 0.75% to 1.54%.</p><p><strong>Conclusions: </strong>Our work revealed that C4 + C5 summation should be used as the auxiliary quantization indicator to reduce false-positive results for PCD.</p>","PeriodicalId":14159,"journal":{"name":"International Journal of Neonatal Screening","volume":"11 2","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12192769/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144484321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nationwide Survey on Neonatal Critical Congenital Cardiopathies in Mexico: Data from 76 Public Health Service Hospital Units.","authors":"Nina Mendez-Dominguez, Ely Sanchez-Felix, Joan Johnson-Herrera, Miguel Santaularia-Tomas, Andres Ku-Gonzalez, Luis Baeza-Herrera, Adriel Ismael Alonso-Batun, Marcos Rivero-Peraza, Humberto Camara-Conde, Amonario Olivera-Mar, Russel Camara-Beltran","doi":"10.3390/ijns11020046","DOIUrl":"10.3390/ijns11020046","url":null,"abstract":"<p><p>When the resources are available, critical congenital heart diseases (CCHDs) should ideally be detected in utero; however, their later detection at birth can still reduce negative outcomes and risks. This study aimed to assess the extent of cardiac screening implementation in a national sample of hospitals within Mexico's public health services. A cross-sectional survey was conducted to identify the barriers and facilitators to neonatal screening using a sample of 76 hospitals. The descriptive statistics and associations were analyzed, with significance set at <i>p</i> < 0.05. Only 12% of hospitals reported the routine implementation of CCHD screening, while 20% used variable screening criteria. A potential mandatory implementation of CCHD screening was associated with increased odds of perceiving the lack of protocols and guidelines as a barrier. The most frequently reported obstacles involved a lack of the following: equipment, designated physical space, trained personnel, and adequate training. Nevertheless, the facilitators identified suggest that when combined with standardized guidelines and protocols, routine nationwide implementation may be achievable.</p>","PeriodicalId":14159,"journal":{"name":"International Journal of Neonatal Screening","volume":"11 2","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12192750/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144484326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ISNS General Guidelines for Neonatal Bloodspot Screening 2025.","authors":"Dianne Webster, Amy Gaviglio, Aysha Habib Khan, Mei Baker, David Cheillan, Layachi Chabraoui, Ghassan Abdoh, Juan Cabello, Roberto Giugliani, Dimitris Platis, Jan Østrup, R Rodney Howell, Peter C J I Schielen, James R Bonham","doi":"10.3390/ijns11020045","DOIUrl":"10.3390/ijns11020045","url":null,"abstract":"<p><p>Part of the vision of the ISNS is 'to enhance the quality of neonatal screening and medical services through dissemination of information, guidelines and best practices.' Although newborn screening encompasses testing in the newborn period for critical congenital heart disease, hearing impairment, birth defects, and congenital biochemical disorders (usually on bloodspots), this guideline is specifically about bloodspot screening. The ISNS has provided neonatal screening guidelines for many years and here presents the renewed 2025 General Guidelines for Neonatal Bloodspot Screening. They are intended to provide a framework for screening programs to develop specific policies around all aspects of the newborn screening system, offering the basic set of items for consideration. These guidelines provide trusted anchors to build, expand, or maintain robustly organized neonatal or newborn screening (NBS) programs and a checklist to evaluate and improve the essential elements of those programs. For starting or developing programs, it is a set of elements for which provisions need to be in place and a checklist of items that the screening program should at a minimum have provisions for. The publication of these guidelines is meant as a starting point for interactive discussion, to further improve this document and expand where necessary.</p>","PeriodicalId":14159,"journal":{"name":"International Journal of Neonatal Screening","volume":"11 2","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12192812/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144484325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of Dried Blood Spot Quality Control Materials for Lysosomal Enzyme Activity Assays Using Digital Microfluidic Fluorometry to Detect Lysosomal Storage Disorders in Newborns.","authors":"Paul Dantonio, Tracy Klug, Golriz Yazdanpanah, Christopher Haynes, Hui Zhou, Patrick Hopkins, Robert Vogt, Rachel Lee, Carla Cuthbert, Konstantinos Petritis","doi":"10.3390/ijns11020044","DOIUrl":"10.3390/ijns11020044","url":null,"abstract":"<p><p>Newborn bloodspot screening for one or more lysosomal storage disorders (NBS-LSD) is currently performed by many public health NBS laboratories globally. The screening tests measure activities of selected lysosomal enzymes on dried blood spot (DBS) specimens collected from newborns by the heel stick method Because these assays measure enzyme activity, the quantitative results are dependent on the particular analytical method. DBS quality control (DBS QC) materials with assay-specific certified values that span the relevant range from typical to LSD-affected newborns are an important component of quality assurance in NBS laboratories. The Newborn Screening Quality Assurance Program (NSQAP) at the U.S. Centers for Disease Control and Prevention (CDC) provides public health NBS laboratories with DBS QC sets for NBS-LSD comprising four admixtures of pooled umbilical cord blood and a base pool made from leukodepleted peripheral blood and heat-inactivated serum. To evaluate the suitability of these materials for use with digital microfluidics fluorometry (DMF) assays which can currently measure the activity of four enzymes (acid α-galactosidase (GLA); acid β-glucocerebrosidase (GBA); acid α-glucosidase (GAA); and iduronidase (IDUA)), CDC collaborated with the Newborn Screening Unit at the Missouri State Public Health Laboratory (MSPHL). Using MSPHL criteria, we found that the certified results from each of two DBS QC lots collectively spanned the range from typical (screen negative) to enzyme deficient (screen positive) newborn DBS levels for each of the four lysosomal enzymes measured. The range included borderline results that would require repeat screening of the newborn under the MSPHL protocol. We conclude that these DBS QC preparations are suitable for use as external quality control materials for DMF assays used to detect LSDs in newborns.</p>","PeriodicalId":14159,"journal":{"name":"International Journal of Neonatal Screening","volume":"11 2","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12193102/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144484322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}