Journal of pediatric genetics最新文献

{"title":"A Novel Missense Heterozygous Mutation in NKX2-5 Gene in a Family with Congenital Septal Defects and Cardiomyopathy: Case Series and Literature Review","authors":"Abdulqader Al Zubaidi, Aisha M Al-Shamsi","doi":"10.1055/s-0044-1788252","DOIUrl":"https://doi.org/10.1055/s-0044-1788252","url":null,"abstract":"Single-gene mutations are important causes of congenital heart defects in children. Mutations in the NKX2-5 gene have been recently described in the literature as a cause of septal defects and cardiomyopathy. However, the spectrum of cardiac disease associated with NKX2-5 gene mutations is variable, ranging from asymptomatic septal defects to cardiomyopathy and sudden death. In this case report, we describe a case of 2-year-old child, along with two other family members, with a novel missense heterozygous (c.544G > T p.[Val182Phe]) mutation in NKX2-5 gene consistent with the diagnosis of autosomal dominant atrial septal defects with cardiomyopathy. This report can contribute to the understanding of genotype–phenotype correlations; it emphasizes the significant clinical relevance of NKX2-5 gene defects for congenital heart defects, sudden death, and cardiomyopathy, especially in multiple affected family members. It also suggests that individuals with NKX2-5 mutations are at risk of lethal arrhythmias and conduction disorders, that is why they should be evaluated routinely to assess the need for implantable cardioverter-defibrillator or pacemaker implantation.","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141661622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erratum: Corrigendum: A Severe Case of Spondylometaphyseal Dysplasia Algerian Type with Two Mutations in <i>COL2A1</i>.","authors":"Francisco Cammarata-Scalisi, Uta Matysiak, Colin E Willoughby, Gunda Ruzaike, Antonio Cárdenas Tadich, Maykol Araya Castillo, Carmen Zara-Chirinos, Ana Bracho, Andrea Avendaño, Houweyda Jilani, Michele Callea","doi":"10.1055/s-0044-1788343","DOIUrl":"https://doi.org/10.1055/s-0044-1788343","url":null,"abstract":"<p><p>[This corrects the article DOI: 10.1055/s-0041-1732474.].</p>","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11233266/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141590578","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":"Contributing Reviewers in 2023.","authors":"","doi":"10.1055/s-0044-1782623","DOIUrl":"https://doi.org/10.1055/s-0044-1782623","url":null,"abstract":"","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10984706/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140864357","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":"A Novel Autosomal Recessive Candidate Gene Responsible for RASopathy-Like Phenotype and Bone Marrow Failure: RASA3","authors":"Akif Ayaz, Zeynep Doğru, Kıvanç Kök, Nihan Bayram, Yöntem Yaman, Abdullah Hüseyin Köseoğlu, Türkan Yiğitbaşı, Aslı Güner Öztürk Demir, Elçin Yüksel, Burcu Dundar, Erdal Fırat Çaralan, Serdar Nepesov, Murat Elli","doi":"10.1055/s-0043-1771526","DOIUrl":"https://doi.org/10.1055/s-0043-1771526","url":null,"abstract":"Abstract Although many genetic etiologies, such as Fanconi anemia, Shwachman–Diamond syndrome, dyskeratosis congenita, and Diamond–Blackfan anemia, from hereditary bone marrow failure are known today, the responsible gene remains unknown in a significant part of these patients. A 6-year-old girl, whose parents were first-cousin consanguineous, was referred to the pediatric hematology department due to growth retardation, thrombocytopenia, neutropenia, and anemia. The patient had low-set ears, pectus excavatum inferiorly, and cafe-au-lait spots. In whole-exome analysis, p.K385T (c.1154A &gt; C) variant in the RASA3 gene was detected as homozygous. The amino acid position of the alteration is located in the conserved and ordered region, corresponding to the Ras GTPase activation domain (Ras-GAP) in the center of the protein. Importantly, most of in silico prediction tools of pathogenicity predicts the variant as damaging. RASopathies, which are characterized by many common clinical findings, such as atypical facial features, growth delays, and heart defects, are a group of rare genetic diseases caused by mutations in the genes involved in the Ras-MAPK pathway. The findings in this patient were consistent with the RASopathy-like phenotype and bone marrow failure. Interestingly, enrichment of RASopathy genes was observed in the RASA3 protein–protein interaction network. Furthermore, the subsequent topological clustering revealed a putative function module, which further implicates RASA3 in this disease as a novel potential causative gene. In this context, the detected RASA3 mutation could be manifesting itself clinically as the observed phenotype by disrupting the functional cooperation between the RASA3 protein and its interaction partners. Relatedly, current literature also supports the obtained findings. Overall, this study provides new insights into RASopathy and put forward the RASA3 gene as a novel candidate gene for this disease group.","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134907843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"rs1800890 Polymorphism of IL-10 and Susceptibility to Idiopathic Thrombocytopenic Purpura","authors":"Fatemeh Zeylabi, Mohammad Taha Jalali, Gholam-Abbas Kaydani, Kaveh Jaseb, Najmaldin Saki","doi":"10.1055/s-0043-1775558","DOIUrl":"https://doi.org/10.1055/s-0043-1775558","url":null,"abstract":"Abstract Immune thrombocytopenic purpura (ITP) is an immune bleeding disorder that is reported in approximately 2 out of every 100,000 adults with a mean age of 50 years. Several factors such as various genetic backgrounds are associated with the pathogenesis of ITP. Interleukin (IL)-10 is a complicated cytokine that has a role in tumor progression, antitumor immunity, and immune system regulation. rs1800890 is an IL-10 single nucleotide polymorphism linked to lower levels of IL-10. A total of 67 patients with ITP and 70 healthy individuals (controls) were considered in this study. The IL-10 polymorphism was detected by the amplification refractory mutation system–polymerase chain reaction technique. According to our analysis, individual carriers of the AA genotype were less likely to develop ITP. The AT genotype was more common in patients with ITP in comparison to the control group. However, there was no significant association between rs1800890 genotypes (p = 0.775, odds ratio =1.517, 95%) in the acute and chronic groups. We observed that women had a higher mean frequency of this polymorphism (p = 0.0012). The rs1800890 AA genotype was associated with the highest platelet counts. However, the mean platelet volume and platelet distribution width values among alleles of the polymorphisms did not vary significantly. The IL-10 rs1800890 polymorphism may have a role in idiopathic thrombocytopenic purpura etiology. As a result, more research with a larger number of sample sizes is suggested.","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135193912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel Pathogenic <i>DNAH5</i> Variants in Primary Ciliary Dyskinesia: Association with Visceral Heterotaxia and Neonatal Cholestasis.","authors":"Hong T Lin,&nbsp;Anita Gupta,&nbsp;Kevin E Bove,&nbsp;Sara Szabo,&nbsp;Fang Xu,&nbsp;Anthony Krentz,&nbsp;Amelle L Shillington","doi":"10.1055/s-0041-1733940","DOIUrl":"https://doi.org/10.1055/s-0041-1733940","url":null,"abstract":"<p><p>The dynein axonemal heavy chain 5 gene codes for a subunit of axonemal dynein necessary for ciliary motor function. Though research has elucidated the consequences of some variants in this gene, it is still unclear whether many variants in the <i>DNAH5</i> locus are benign or pathogenic due to the rarity of primary ciliary dyskinesia (PCD, of which Kartagener's syndrome is a subset). Here, we introduce the case of an infant boy presenting with the classical findings of PCD along with visceral heterotaxia and neonatal cholestasis. Genetic testing indicated that the patient is a compound heterozygote with a pathogenic c.8498G > A (known as pathogenic) on the maternally derived allele and two variants of uncertain significance, c.1206T > A and c.7800T > G, on the paternally derived allele. As PCD is autosomal recessive, we conclude that one, or both, of these paternally derived variants are pathogenic. To our knowledge, this is the first time that the clinical implications of c.1206T > A (p.Asn402Lys) and c.7800T > G (p.Ile2600Met) are documented. Furthermore, we use this case as an example to recommend clinicians to assess for PCD and laterality defects when presented with severe infantile cholestasis. While the association of cholestasis with PCD is relatively uncommon, PCD is a risk factor for increased prevalence of biliary atresia and infections, both of which are known causes of cholestasis in early infancy.</p>","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10421694/pdf/10-1055-s-0041-1733940.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9989407","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":"Transient Neonatal Diabetes Mellitus and Seizure with an Unknown Etiology.","authors":"Sevinc Odabasi Gunes,&nbsp;Erhan Calisici,&nbsp;Mutluay Arslan,&nbsp;Onur Akin,&nbsp;Belma Saygili Karagol","doi":"10.1055/s-0041-1727175","DOIUrl":"https://doi.org/10.1055/s-0041-1727175","url":null,"abstract":"<p><p>Neonatal diabetes mellitus (NDM) is a monogenic form of diabetes, usually occurring in the first 6 months of life. Here, we present a newborn, which was admitted with epileptic seizure on the postnatal second day of life. Sepsis and meningitis were ruled out. Cranial imaging and electroencephalography revealed normal. She developed transient NDM on the follow-up and was diagnosed to carry an <i>ABCC8</i> mutation. Although the neurological features are more common in patients with <i>KCJN11</i> mutations, patients with <i>ABCC8</i> mutations could also represent with subtle neurodevelopmental changes or even with epileptic seizures. The genetic testing and appropriate therapy is important in this patient group for predicting clinical course and possible additional features.</p>","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10421686/pdf/10-1055-s-0041-1727175.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9998195","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":"Infantile Systemic Hyalinosis Presenting as Pseudo-Paralysis in Infancy: Study of Six Cases.","authors":"Vykuntaraju K Gowda,&nbsp;Sahana M Srinivas,&nbsp;Priya Gupta,&nbsp;Varunvenkat M Srinivasan,&nbsp;Sanjay K Shivappa,&nbsp;Gurudatta B Vishwanathan","doi":"10.1055/s-0041-1736558","DOIUrl":"https://doi.org/10.1055/s-0041-1736558","url":null,"abstract":"<p><p>Infantile systemic hyalinosis is a very rare fatal autosomal recessive genetic disorder with a mutation in capillary morphogenesis gene-2- <i>CMG2</i> /Human anthrax toxin-2 <i>ANTXR2</i> resulting in spindle cell proliferation, altered collagen metabolism along with extensive deposition of hyaline material in the skin and several tissues. To date only a few cases have been reported in the literature, hence we reported this series. This study is a retrospective chart review of infants diagnosed with infantile systemic hyalinosis from January 2015 through December 2020 at a tertiary care children's hospital in South India. The mean age of presentation was 9.4 months, with a male to female ratio of 1:5. All children were born of consanguineous marriage except one child. All children had symptoms at birth, painful limb movements, multiple joint stiffness, gingival thickening, skin lesions around perianal, perioral areas, and frog-like position. Three (50%) children had stiff skin. Routine tests including complete blood count, liver function test, renal function test, creatine phosphokinase, nerve conduction studies, and metabolic tests were normal in all children. Skin biopsy showed hyalinized collagenous tissue in the dermis. Genetic study results of two cases revealed pathogenic variants in <i>ANTXR2</i> gene. Infantile systemic hyalinosis should be considered in infants presenting with painful limb movements. The diagnosis helped in avoiding unnecessary investigations and prognostications. The genetic information from proband mutation helped in prenatal diagnosis in two families.</p>","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10421683/pdf/10-1055-s-0041-1736558.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9998194","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":"X-Linked Myotubular Myopathy: A Novel Mutation Expanding the Genotypic Spectrum of a Phenotypically Heterogeneous Myopathy.","authors":"Andreia Carvalho,&nbsp;Carmen Costa,&nbsp;Miguel Pinto,&nbsp;Ricardo Taipa,&nbsp;Ana Gonçalves,&nbsp;Márcia E Oliveira,&nbsp;Sofia Ferreira,&nbsp;Joana Afonso Ribeiro","doi":"10.1055/s-0041-1728745","DOIUrl":"https://doi.org/10.1055/s-0041-1728745","url":null,"abstract":"<p><p>X-linked myotubular myopathy (XLMTM), a centronuclear congenital myopathy secondary to pathogenic variants in the <i>MTM1</i> gene encoding myotubularin, is typically recognized for its classic and severe phenotype which includes neonatal hypotonia, severe muscle weakness, long-term ventilator dependence, markedly delayed gross motor milestones with inability to independently ambulate, and a high neonatal and childhood mortality. However, milder congenital forms of the condition and other phenotypes are recognized. We describe a 6-year-old boy with a mild XLMTM phenotype with independent gait and no respiratory insufficiency even in the neonatal period. The child has a hemizygous novel splice site variant in the <i>MTM1</i> gene (c.232-25A > T) whose pathogenicity was confirmed by cDNA studies (exon 5 skipping) and muscle biopsy findings. We also compared the phenotype of our patient with the few reported cases that presented a mild XLMTM phenotype and no respiratory distress at birth, and discussed the potential mechanisms underlying this phenotype such as the presence of residual expression of the normal myotubularin transcript.</p>","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10421687/pdf/10-1055-s-0041-1728745.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9998200","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 Efficacy of Whole Genome Sequencing and RNA-Seq in the Diagnosis of Whole Exome Sequencing Negative Patients with Complex Neurological Phenotypes.","authors":"Bianca Blake,&nbsp;Lauren I Brady,&nbsp;Nicholas A Rouse,&nbsp;Peter Nagy,&nbsp;Mark A Tarnopolsky","doi":"10.1055/s-0041-1736610","DOIUrl":"https://doi.org/10.1055/s-0041-1736610","url":null,"abstract":"<p><p>Whole-genome sequencing (WGS) is being increasingly utilized for the diagnosis of neurological disease by sequencing both the exome and the remaining 98 to 99% of the genetic code. In addition to more complete coverage, WGS can detect structural variants (SVs) and intronic variants (SNVs) that cannot be identified by whole exome sequencing (WES) or chromosome microarray (CMA). Other multi-omics tools, such as RNA sequencing (RNA-Seq), can be used in conjunction with WGS to functionally validate certain variants by detecting changes in gene expression and splicing. The objective of this retrospective study was to measure the diagnostic yield of duo/trio-based WGS and RNA-Seq in a cohort of 22 patients (20 families) with pediatric onset neurological phenotypes and negative or inconclusive WES results in lieu of reanalysis. WGS with RNA-Seq resulted in a definite diagnosis of an additional 25% of cases. Sixty percent of these solved cases arose from the identification of variants that were missed by WES. Variants that could not be unequivocally proven to be causative of the patients' condition were identified in an additional 5% of cases.</p>","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10421693/pdf/10-1055-s-0041-1736610.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10370953","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}