Neonatal Birth Defects: Latest Advances

A special issue of Children (ISSN 2227-9067). This special issue belongs to the section "Pediatric Neonatology".

Deadline for manuscript submissions: 10 January 2025 | Viewed by 12117

Special Issue Editor


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Guest Editor
1. Department of Neonatology, Changhua Christian Children’s Hospital, Changhua 50050, Taiwan
2. Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung 40705, Taiwan
Interests: neonatal birth defects; mechanical ventilation in the treatment of neonatal lung disease; prevention and treatment of neonatal sepsis

Special Issue Information

Dear Colleagues,

Birth defects (BDs) are structural or functional abnormalities present at or before birth. They can be caused by genetic abnormalities and/or environmental exposure. BDs are considered to be main causes of mortality and disability in infants and children.

Birth defects occur in approximately 2 to 4 percent of livebirths and are more common in stillborn spontaneous miscarriages. The overall prevalence of BDs has remained constant.

Many risk factors have been associated with BDs, including maternal age, environmental pollution, medications, maternal chronic diseases, infectious agents (e.g, TORCH toxoplasmosis, Syphilis, varicella zoster, parovirus B19, Rubella, Cytomegalovirus, and herpes infections) and physical agents (e.g, radiation). If we can prevent or reduce these risk factors, we may decrease the number of patients with BDs.

Prof. Dr. Jia Yuh Chen
Guest Editor

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Keywords

  • birth defects
  • congenital malfornations
  • deformations
  • congenital abnormalities
  • disruptions
  • genetic abnormalities

Published Papers (9 papers)

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12 pages, 1031 KiB  
Article
Neurodevelopment Outcomes in Very-Low-Birth-Weight Infants with Metabolic Bone Disease at 2 Years of Age
by Yu-Wen Chen, Yu-Jun Chang, Lih-Ju Chen, Cheng-Han Lee, Chien-Chou Hsiao, Jia-Yuh Chen and Hsiao-Neng Chen
Children 2024, 11(1), 76; https://doi.org/10.3390/children11010076 - 09 Jan 2024
Viewed by 771
Abstract
Metabolic bone disease (MBD) predominantly affects preterm infants, particularly very-low-birth-weight (VLBW) infants weighing <1500 g. However, there are limited reports on MBD and neurodevelopmental outcomes. This study aimed to analyze the risk factors for MBD and understand its impact on neurodevelopmental outcomes at [...] Read more.
Metabolic bone disease (MBD) predominantly affects preterm infants, particularly very-low-birth-weight (VLBW) infants weighing <1500 g. However, there are limited reports on MBD and neurodevelopmental outcomes. This study aimed to analyze the risk factors for MBD and understand its impact on neurodevelopmental outcomes at 2 years of corrected age. Overall, 749 VLBW infants weighing <1350 g at birth were enrolled. Exclusion criteria were major congenital abnormalities, chromosomal abnormalities, and loss of follow-up on the Bayley Scales of Infant Development, Third Edition (BSID-III) test at 24 months of corrected age. Infants were retrospectively assessed by a trained case manager using the BSID-III test at 6, 12, and 24 months old. Infants were categorized as with or without MBD according to radiographic signs. Of those enrolled, 97 VLBW infants were diagnosed with MBD, compared to 362 VLBW infants without MBD. The proportion of infants that completed three follow-ups was 86%. At the assessment at 2 years of age, infants with MBD had lower and more significant differences in motor, language, and cognitive composites. MBD is associated with poor neurodevelopmental outcomes in cognitive, motor, and language composites for VLBW infants at 24 months of corrected age. Full article
(This article belongs to the Special Issue Neonatal Birth Defects: Latest Advances)
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13 pages, 1861 KiB  
Article
Long-Term Non-Congenital Cardiac and Renal Complications in Down Syndrome: A Study of 32,936 Patients
by Yu-Nan Huang, Jing-Yang Huang, Chung-Hsing Wang and Pen-Hua Su
Children 2023, 10(8), 1351; https://doi.org/10.3390/children10081351 - 05 Aug 2023
Viewed by 1344
Abstract
Background: Individuals with Down syndrome are at a higher risk of cardiac, renal, and other health issues due to a complex disease physiology. However, few data exist on long-term disease risks to guide prevention and care. We aimed to determine the 10-year incidence [...] Read more.
Background: Individuals with Down syndrome are at a higher risk of cardiac, renal, and other health issues due to a complex disease physiology. However, few data exist on long-term disease risks to guide prevention and care. We aimed to determine the 10-year incidence of cardiac, renal, and urinary tract complications in Down syndrome versus matched controls. Methods: This retrospective cohort study utilized a large collaborative database. We identified 32,444 patients with Down syndrome and matched controls, excluding those with pre-follow-up target events. Covariates included demographics, lifestyle factors, and comorbidities. Outcomes were ischemic heart disease, hypertension, hypothyroidism, epilepsy, urinary tract infections and chronic kidney disease. We calculated unadjusted and adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) using Cox regression and plotted Kaplan–Meier survival curves. Findings: Over 10 years, Down syndrome patients showed a 3.7-fold higher ischemic heart disease risk (95% CI: 3.0–4.6) and a 1.6-fold higher hypertension risk (95% CI: 1.4–1.8) versus controls. Hypothyroidism (HR = 2.0; 95% CI: 1.7–2.4), epilepsy (HR = 4.5; 95% CI: 3.5–5.8), and urinary tract infection (HR = 3.9; 95% CI: 3.4–4.6) risks were also higher. Chronic kidney disease risk was 2.7-fold greater (95% CI: 2.1–3.5). Survival analysis confirmed a significantly higher incidence of all outcomes in Down syndrome (p < 0.0001). Interpretation: This large study found major health challenges in Down syndrome, with risks 3- to 5-fold higher for chronic conditions versus matched controls over 10 years. Though survival remains high with proper care, focusing resources on the prevention and management of complications in this high-risk group can optimize well-being across the lifespan. Future research accounting for limitations here would provide definitive estimates of disease risk in Down syndrome to guide targeted health strategies. Full article
(This article belongs to the Special Issue Neonatal Birth Defects: Latest Advances)
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16 pages, 254 KiB  
Article
Accuracy of Multimodality Fetal Imaging (US, MRI, and CT) for Congenital Musculoskeletal Anomalies
by Roy U. Bisht, Mohan V. Belthur, Ian M. Singleton and Luis F. Goncalves
Children 2023, 10(6), 1015; https://doi.org/10.3390/children10061015 - 05 Jun 2023
Viewed by 958
Abstract
Background: Ultrasonography (US) is the first-line diagnostic tool used to assess fetal musculoskeletal (MSK) anomalies. Associated anomalies in other organ systems may benefit from evaluation via Magnetic Resonance Imaging (MRI). In this study, we compared the diagnostic accuracy of US and MRI to [...] Read more.
Background: Ultrasonography (US) is the first-line diagnostic tool used to assess fetal musculoskeletal (MSK) anomalies. Associated anomalies in other organ systems may benefit from evaluation via Magnetic Resonance Imaging (MRI). In this study, we compared the diagnostic accuracy of US and MRI to diagnose fetal MSK (primary objective) and non-MSK anomalies (secondary objective). We describe additional findings by low-dose computerized tomography (CT) in two cases incompletely characterized via US and MRI. Materials and Methods: This was an IRB-approved retrospective study of consecutive patients with suspected fetal MSK anomalies examined between December 2015 and June 2020. We compared individual MSK and non-MSK anomalies identified via US, MRI, and CT with postnatal outcomes. Sensitivity and specificity for US and MRI were calculated and compared. Results: A total of 31 patients with 112 MSK and 43 non-MSK anomalies were included. The sensitivity of MRI and US for MSK anomalies was not significantly different (76.6% vs. 61.3%, p = 0.3). Low-dose CT identified eight additional skeletal anomalies. MRI diagnosed a higher number of non-MSK anomalies compared to US (81.4% vs. 37.2%, p < 0.05). Conclusions: Fetal MRI and US have comparable sensitivity for MSK anomalies. In selected cases, low-dose CT may provide additional information. Fetal MRI detected a larger number of non-MSK anomalies in other organ systems compared to US. Multimodality imaging combining all the information provided by MRI, US, and CT, if necessary, ultimately achieved a sensitivity of 89.2% (95% CI: 83.4% to 95.0%) for the diagnosis of musculoskeletal anomalies and 81.4% for additional anomalies in other organs and systems. Full article
(This article belongs to the Special Issue Neonatal Birth Defects: Latest Advances)
9 pages, 1129 KiB  
Article
Reducing Birth Defects by Decreasing the Prevalence of Maternal Chronic Diseases—Evaluated by Linked National Registration Dataset
by Lih-Ju Chen, Ping-Ju Chen, Jing-Yang Huang, Shun-Fa Yang and Jia-Yuh Chen
Children 2022, 9(12), 1793; https://doi.org/10.3390/children9121793 - 22 Nov 2022
Viewed by 1314
Abstract
Birth defects (BDs) are an important cause of abortion, stillbirth, and infant mortality that may cause lifelong disability. The defects can be caused by genetics, environmental exposure, or maternal chronic diseases. We conducted a study to analyze the association between maternal chronic diseases [...] Read more.
Birth defects (BDs) are an important cause of abortion, stillbirth, and infant mortality that may cause lifelong disability. The defects can be caused by genetics, environmental exposure, or maternal chronic diseases. We conducted a study to analyze the association between maternal chronic diseases and BDs and to evaluate the effect of decreasing the prevalence of maternal chronic diseases on reducing BDs. The data of newborns and their mothers were concatenated and analyzed from three national population databases: the National Health Insurance Research Database, the Birth Certificate Application, and the Birth Registration Database in Taiwan during the period of 2005 to 2014. Codes 740-759 of the International Classification of Diseases 9th Revision—Clinical Modification (ICD-9-CM) were used as the diagnosis of BDs. The prevalence of BDs was 2.72%. Mothers with cardiovascular diseases, hypertension, anemia, genitourinary tract infections, renal diseases, neurotic or psychotic disorders, gestational diabetes mellitus (DM), and pregestational type 1 or type 2 DM had a significantly higher prevalence of BDs. The population attributable risk percent (PAR%) of BDs was 1.63%, 0.55%, 0.18%, 1.06%, 0.45%, 0.22%, 0.48%, and 0.24% for maternal hypertension, cardiovascular disease, renal disease, genitourinary infection, anemia, neurotic and psychotic disorders, gestational DM, and pregestational type 1 or type 2 DM, respectively. The percentage change (−1%, −5%, and −10% of prevalence in 2034 compared with the prevalence in 2005–2014) of maternal disease and the predicted number of live births was used to estimate the decrease in the number of newly diagnosed BDs in 2034. By using the middle-estimated number of live births in 2034, we predicted that the number of BDs would decrease by 302, 102, 33, 196, 83, 41, 89, and 44 with a −5% prevalence of maternal hypertension, cardiovascular disease, renal disease, genitourinary infection, anemia, neurotic and psychotic disorders, gestational DM, and pregestational type 1 or type 2 DM, respectively. We conclude that mothers with chronic diseases, including cardiovascular diseases, hypertension, anemia, genitourinary tract infections, renal diseases, neurotic or psychotic disorders, gestational DM, and pregestational type 1 or type 2 DM, have a significantly higher (p < 0.01) prevalence of having offspring with BDs. Mothers with chronic diseases are associated with BDs. It is very important to set up a policy to decrease the prevalence of these maternal chronic diseases; then, we can reduce the incidence of BDs. Full article
(This article belongs to the Special Issue Neonatal Birth Defects: Latest Advances)
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10 pages, 868 KiB  
Article
Early Cerebrovascular Autoregulation in Neonates with Congenital Heart Disease
by Celina L. Brunsch, Mirthe J. Mebius, Rolf M. F. Berger, Arend F. Bos and Elisabeth M. W. Kooi
Children 2022, 9(11), 1686; https://doi.org/10.3390/children9111686 - 03 Nov 2022
Cited by 3 | Viewed by 1556
Abstract
Neonates with congenital heart disease (CHD) display delayed brain development, predisposing them to impaired cerebrovascular autoregulation (CAR) and ischemic brain injury. For this paper, we analyzed the percentage of time with impaired CAR (%time impaired CAR) during the first 72 h after birth, [...] Read more.
Neonates with congenital heart disease (CHD) display delayed brain development, predisposing them to impaired cerebrovascular autoregulation (CAR) and ischemic brain injury. For this paper, we analyzed the percentage of time with impaired CAR (%time impaired CAR) during the first 72 h after birth, the relation with clinical factors, and survival in 57 neonates with CHD. The primary outcome was a correlation coefficient of cerebral oxygenation (rcSO2) and mean arterial blood pressure (MABP, mmHg) for two hours on a daily basis. The %time impaired CAR ranged from 9.3% of the studied time on day one to 4.6% on day three. Variables associated with more %time impaired CAR were the use of inotropes (day 1, B = 19.5, 95%CI = 10.6–28.3; day 3, B = 11.5, 95%CI = 7.1–16), lower MABP (day 1, B = −0.6, 95%CI = −1.2–0.0), and dextro-transposition of the great arteries (dTGA) (16.2%) compared with other CHD types (2.0–5.0%; day 1, p = 0.022). Survival was not an associated variable. To summarize, impaired CAR was found in CHD neonates in up to 9.3% of the studied time. More evidence is necessary to evaluate an association with inotropes, dTGA, %time impaired CAR, and long-term outcome, further in larger cohorts. Full article
(This article belongs to the Special Issue Neonatal Birth Defects: Latest Advances)
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9 pages, 1127 KiB  
Brief Report
Optimal Protocols and Management of Clinical and Genomic Data Collection to Assist in the Early Diagnosis and Treatment of Multiple Congenital Anomalies
by Heui Seung Jo, Misun Yang, So Yoon Ahn, Se In Sung, Won Soon Park, Ja-Hyun Jang and Yun Sil Chang
Children 2023, 10(10), 1673; https://doi.org/10.3390/children10101673 - 10 Oct 2023
Viewed by 845
Abstract
Standardized protocols have been designed and developed specifically for clinical information collection and obtaining trio genomic information from infants affected with congenital anomalies (CA) and their parents, as well as securing human biological resources. The protocols include clinical and genomic information collection on [...] Read more.
Standardized protocols have been designed and developed specifically for clinical information collection and obtaining trio genomic information from infants affected with congenital anomalies (CA) and their parents, as well as securing human biological resources. The protocols include clinical and genomic information collection on multiple CA that were difficult to diagnose using pre-existing screening methods. We obtained human-derived resources and genomic information from 138 cases, including 45 families of infants with CA and their parent trios. For the clinical information collection protocol, criteria for target patient selection and a consent system for collecting and utilizing research resources are crucial. Whole genome sequencing data were generated for all participants, and standardized protocols were developed for resource collection and manufacturing. We recorded the phenotype information according to the Human Phenotype Ontology term, and epidemiological information was collected through an environmental factor questionnaire. Updating and recording of clinical symptoms and genetic information that have been newly added or changed over time are significant. The protocols enabled long-term tracking by including the growth and development status that reflect the important characteristics of newborns. Using these clinical and genetic information collection protocols for CA, an essential platform for early genetic diagnosis and diagnostic research can be established, and new genetic diagnostic guidelines can be presented in the near future. Full article
(This article belongs to the Special Issue Neonatal Birth Defects: Latest Advances)
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7 pages, 1642 KiB  
Case Report
An Unusual Case of Neonatal Hypotonia and Femur Fracture: Neuromuscular Variant of Glycogen Storage Disease Type IV
by Handan Bezirganoglu and Kubra Adanur Saglam
Children 2023, 10(8), 1375; https://doi.org/10.3390/children10081375 - 11 Aug 2023
Viewed by 1020
Abstract
Glycogen storage disease type IV (GSD IV) (OMIM #232500) is an autosomal recessive disorder caused by deficiency of the glycogen-branching enzyme. Here, we report a patient presenting with prematurity and severe hypotonia resulting from a complicated pregnancy with polyhydramnios. During her stay in [...] Read more.
Glycogen storage disease type IV (GSD IV) (OMIM #232500) is an autosomal recessive disorder caused by deficiency of the glycogen-branching enzyme. Here, we report a patient presenting with prematurity and severe hypotonia resulting from a complicated pregnancy with polyhydramnios. During her stay in the neonatal unit, the infant remained dependent on a ventilator, and her movements were mostly absent, except for occasional small movements of her fingers. A spontaneous fracture of femur shaft occurred in the postnatal fourth week. Whole-exome sequencing of DNA from the patient revealed a homozygous missense variant in the GBE1 gene (c.1693C>T, p.Arg565Trp). The variation detected in the index case was also confirmed by Sanger sequencing in the patient and respective parents. This study showed that the neuromuscular subtypes of GSD-IV should be considered as a possible differential diagnosis in severe neonatal hypotonia cases. Full article
(This article belongs to the Special Issue Neonatal Birth Defects: Latest Advances)
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6 pages, 1467 KiB  
Case Report
Distal Tibial Hemimelia in Fetal Methotrexate Syndrome: A Case Study and Literature Review
by Dae-Sik Jo and Seung-Hyun Lee
Children 2023, 10(2), 228; https://doi.org/10.3390/children10020228 - 27 Jan 2023
Viewed by 1339
Abstract
Methotrexate (MTX), a folate antagonist, is used in various fields, including malignancies and rheumatoid or inflammatory autoimmune diseases. MTX is used for the non-surgical treatment of ectopic pregnancies and the elective termination of pregnancy. The teratogenic effects of MTX have been recognized since [...] Read more.
Methotrexate (MTX), a folate antagonist, is used in various fields, including malignancies and rheumatoid or inflammatory autoimmune diseases. MTX is used for the non-surgical treatment of ectopic pregnancies and the elective termination of pregnancy. The teratogenic effects of MTX have been recognized since the 1960s. Fetal methotrexate syndrome (FMS) was established based on the study of congenital anomalies. Generally, there is a risk of FMS when MTX is used between four and six weeks after conception. Here, we reviewed the literature regarding MTX usage and described a case of FMS that was born with a rare anomaly, such as tibial hemimelia, in a mother who had received MTX 4 months before conception for the management of an ectopic pregnancy. Full article
(This article belongs to the Special Issue Neonatal Birth Defects: Latest Advances)
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10 pages, 1925 KiB  
Case Report
A Preterm Infant with Feeding Aspiration Diagnosed with BOR Syndrome, Confirmed Case by Whole-Genome Sequencing and Structural Variant Calling
by Da Hyeon Kim, Misun Yang, Heui Seung Jo, JongHo Park, JaHyun Jang, Sunghwan Shin and SeHyung Son
Children 2023, 10(1), 76; https://doi.org/10.3390/children10010076 - 30 Dec 2022
Cited by 1 | Viewed by 1423
Abstract
Branchiootorenal (BOR) syndrome is a rare autosomal dominant inherited disease with a prevalence of approximately 1 in 40,000 newborns. This disease is characterized by hearing loss, preauricular pits, branchial fistulas or cysts, and renal dysplasia. We discovered a case of BOR syndrome in [...] Read more.
Branchiootorenal (BOR) syndrome is a rare autosomal dominant inherited disease with a prevalence of approximately 1 in 40,000 newborns. This disease is characterized by hearing loss, preauricular pits, branchial fistulas or cysts, and renal dysplasia. We discovered a case of BOR syndrome in a premature 2-week-old female infant with a gestational age of 32 weeks and two days. She and her family had major symptoms and a family history of BOR. BOR syndrome was confirmed by whole-genome sequencing and structural variant calling, which revealed an EYA1 exon 5–6 deletion. The infant had recurrent sleep and feeding cyanosis with second branchial anomalies. Via videofluoroscopic swallowing study and a modified barium swallow test, penetration into the vocal cords was observed before and during swallowing when bottle feeding. This is the first report of a preterm infant early diagnosed with BOR syndrome in which deletion margin was accurately identified by whole-genome sequencing and structural variant calling in Republic of Korea. Full article
(This article belongs to the Special Issue Neonatal Birth Defects: Latest Advances)
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