{"title":"Esophageal Stricture and Dermal Pathology Related to Compound Heterozygous Mutations in the <i>TNXB</i> Gene.","authors":"Nida Mirza, Sundeep Upadhyaya, Sagar Mehta, Smita Malhotra, Anupam Sibal","doi":"10.1055/s-0041-1724048","DOIUrl":"https://doi.org/10.1055/s-0041-1724048","url":null,"abstract":"<p><p>The Ehlers-Danlos' syndrome (EDS) constitutes a group of connective tissue disorders that are clinically and genetically heterogeneous. Mutations in the <i>TNXB</i> gene have been recognized as pathogenic causing classical-like EDS due to tenascin-X deficiency. Here, we have reported a unique case of compound heterozygous mutation in <i>TNXB</i> gene leading to esophageal stricture and scarred skin in a 7-year-old boy who presented to us with impacted foreign body in esophagus. The child was also having tendency to atrophic skin scarring secondary to trivial trauma.</p>","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":"12 3","pages":"224-226"},"PeriodicalIF":0.4,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10421679/pdf/10-1055-s-0041-1724048.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9995773","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":"Genesis of a Fact: Tay-Sachs Disease as a \"Simple Recessive\".","authors":"Mark Lubinsky","doi":"10.1055/s-0043-1769115","DOIUrl":"10.1055/s-0043-1769115","url":null,"abstract":"<p><p>\"Obvious\" recessive inheritance of Tay-Sachs disease (TSD; OMIM # 272800) took over half a century to be established. Points now taken for granted were problematic, that: (1) TSD is a biological entity, not an artificial selection of concurrent findings, (2) manifestations have narrow limits, (3) it was not part of a spectrum of disorders, and can be differentiated from other conditions, (4) it will not change to another disease, (5) it is due to a single specific gene, (6) there are no secondary causes, (7) the gene has no apparent clinical effects unrelated to TSD, and (8) the gene is inherited only as a clinical recessive. To a large extent, resolution reflected biochemical understanding that took until mid-20th century, and beyond, to change how physicians viewed diseases in general. With this, biochemical carrier screening and prenatal biochemical diagnosis have become routinely available, and it is a model for carrier population screening, while gene therapy for the disease has been reported with some degree of success. Here, the history of medical ideas about TSD and its inheritance are reviewed to show how it achieved its current status as a distinct recessive disorder.</p>","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":"12 3","pages":"187-192"},"PeriodicalIF":0.4,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10421688/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9989409","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":"Eye of the Tiger: Looking Beyond Neurodegeneration with Brain Iron Accumulation Disorders.","authors":"Prajnya Ranganath, Mallikarjun Patil","doi":"10.1055/s-0041-1723959","DOIUrl":"https://doi.org/10.1055/s-0041-1723959","url":null,"abstract":"<p><p>The \"eye-of-the-tiger\" sign in brain magnetic resonance imaging (MRI) is typically associated with neurodegeneration with brain iron accumulation disorders, especially pantothenate kinase-associated neurodegeneration. However, very similar neuroimaging findings may be seen in other neurodegenerative disorders involving the basal ganglia. We report here a patient with fucosidosis who had MRI brain findings closely resembling the \"eye-of-the-tiger\" sign.</p>","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":"12 2","pages":"163-166"},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10118706/pdf/10-1055-s-0041-1723959.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9741620","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}
Grace Lin, Heming Wei, Angeline H M Lai, Ee-Shien Tan, Jiin Ying Lim, Breana Cham, Simon Ling, Saumya S Jamuar, Ene-Choo Tan
{"title":"Novel Variants and Clinical Characteristics of 16 Patients from Southeast Asia with Genetic Variants in Neurofibromin-1.","authors":"Grace Lin, Heming Wei, Angeline H M Lai, Ee-Shien Tan, Jiin Ying Lim, Breana Cham, Simon Ling, Saumya S Jamuar, Ene-Choo Tan","doi":"10.1055/s-0041-1736457","DOIUrl":"https://doi.org/10.1055/s-0041-1736457","url":null,"abstract":"<p><p>Neurofibromatosis type 1 (NF1) is one of the most common inherited disorders. It is caused by mutations in the neurofibromin-1 gene ( <i>NF1</i> ) and affects the formation and growth of nerve tissues. More than 3,600 pathogenic variants in the <i>NF1</i> gene have been identified from patients with most of the germline variants are from the Western populations. We found 16 patients (15 Chinese and 1 Asian Indian) who had heterozygous variants in <i>NF1</i> through targeted next-generation sequencing. There were 15 different variants: 4 frameshift, 4 nonsense, 5 missense, and 2 splice variants. One nonsense variant and three frameshift variants had never been reported in any population or patient database. Twelve of the 16 patients met the NF1 diagnostic criteria, and each was found to have a pathogenic or likely pathogenic variant. Three different missense variants of unknown significance were discovered in the other four patients who did not meet NF1 diagnostic criteria. Our findings add four novel variants to the list of genetic mutations linked to NF1's various clinical manifestations.</p>","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":"12 2","pages":"135-140"},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10118707/pdf/10-1055-s-0041-1736457.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9741622","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}
Davor Petrović, Vida Čulić, Zofia Swinderek-Alsayed
{"title":"Three Cases of Joubert Syndrome in a Consanguineous Syrian Family and a Interesting Case of Multinational Collaboration.","authors":"Davor Petrović, Vida Čulić, Zofia Swinderek-Alsayed","doi":"10.1055/s-0040-1721826","DOIUrl":"https://doi.org/10.1055/s-0040-1721826","url":null,"abstract":"<p><p>Joubert syndrome (JS) is a rare congenital, autosomal recessive disorder characterized by a distinctive brain malformation, developmental delay, ocular motor apraxia, breathing abnormalities, and high clinical and genetic heterogeneity. We are reporting three siblings with JS from consanguineous parents in Syria. Two of them had the same homozygous c.2172delA (p.Trp725Glyfs*) <i>AHI1</i> mutation and the third was diagnosed prenatally with magnetic resonance imaging. This pathogenic variant is very rare and described in only a few cases in the literature. Multinational collaboration could be of benefit for the patients from undeveloped, low-income countries that have a low-quality health care system, especially for the diagnosis of rare diseases.</p>","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":"12 2","pages":"167-170"},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10118711/pdf/10-1055-s-0040-1721826.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9741624","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}
Bhanudeep Singanamalla, Pradip Paria, Renu Suthar, Arushi G Saini, Savita V Attri
{"title":"The Challenge of Severe Acute Malnutrition in Inborn Errors of Metabolism: Does Medical Food Alone Suffice?","authors":"Bhanudeep Singanamalla, Pradip Paria, Renu Suthar, Arushi G Saini, Savita V Attri","doi":"10.1055/s-0041-1739288","DOIUrl":"https://doi.org/10.1055/s-0041-1739288","url":null,"abstract":"<p><p>Glutaric aciduria type 1 (GA-1) is a treatable inborn error of metabolism caused by glutaryl-CoA dehydrogenase deficiency. This enzyme deficiency leads to accumulation of glutaric acid, 3-hydroxy glutaric acid, and glutaconic acid which are potentially neurotoxic. Patients with GA-1 have characteristic clinical and neuroimaging features that help us to clinch the diagnosis. Early diagnosis by newborn screening helps us to prevent the motor problems such as dystonia and spasticity. Treatment includes low-protein diet along with carnitine supplementation which may lead to deficiency of essential amino acids and hence malnutrition. Managing malnutrition in a child with inborn errors of metabolism (IEM) is challenging. Here, we describe a patient, a case of GA-1 on medical food, presenting with severe acute malnutrition, who improved with a combination of medical and home-made foods along with lysine-free, tryptophan-reduced amino acid supplements.</p>","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":"12 2","pages":"175-178"},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10118697/pdf/10-1055-s-0041-1739288.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9418880","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}
Jacinta Fonseca, C Melo, C Ferreira, M Sampaio, R Sousa, M Leão
{"title":"RHOBTB2 p.Arg511Trp Mutation in Early Infantile Epileptic Encephalopathy-64: Review and Case Report.","authors":"Jacinta Fonseca, C Melo, C Ferreira, M Sampaio, R Sousa, M Leão","doi":"10.1055/s-0040-1722288","DOIUrl":"https://doi.org/10.1055/s-0040-1722288","url":null,"abstract":"<p><p>Early infantile epileptic encephalopathy-64 (EIEE 64), also called RHOBTB2-related developmental and epileptic encephalopathy (DEE), is caused by heterozygous pathogenic variants (EIEE 64; MIM#618004) in the Rho-related BTB domain-containing protein 2 ( <i>RHOBTB2</i> ) gene. To date, only 13 cases with RHOBTB2-related DEE have been reported. We add to the literature the 14th case of EIEE 64, identified by whole exome sequencing, caused by a heterozygous pathogenic variant in RHOBTB2 (c.1531C > T), p.Arg511Trp. This additional case supports the main features of RHOBTB2-related DEE: infantile-onset seizures, severe intellectual disability, impaired motor functions, postnatal microcephaly, recurrent status epilepticus, and hemiparesis after seizures.</p>","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":"12 2","pages":"155-158"},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10118705/pdf/10-1055-s-0040-1722288.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9741618","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}
Manisha Goyal, Mohammed Faruq, Ashok Gupta, Divya Shrivastava, Uzma Shamim
{"title":"6q13q14.3 Microdeletion Syndrome with Severe Hypotonia and Facial Dysmorphism: Genotype-Phenotype Correlation.","authors":"Manisha Goyal, Mohammed Faruq, Ashok Gupta, Divya Shrivastava, Uzma Shamim","doi":"10.1055/s-0040-1721739","DOIUrl":"https://doi.org/10.1055/s-0040-1721739","url":null,"abstract":"<p><p>Hypotonia is a symptom of diminished tone of skeletal muscle and can be nongenetic or a part of genetic syndrome. Hypotonia, developmental delay, and facial dysmorphism are nonspecific findings observed in many genetic syndromes mostly in chromosomal microdeletion and duplication. Here we report a case with severe hypotonia and facial dysmorphism, diagnosed with deletion at 6q13q14.3 by array comparative genomic hybridization (CGH) at very early age. Recent genetic diagnostic technologies such as array CGH may enable clinicians to diagnose chromosomal abnormalities earlier and provide appropriate medical management.</p>","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":"12 2","pages":"141-143"},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10118712/pdf/10-1055-s-0040-1721739.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9741619","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}
Juan Jose Nieto-Barcelo, Noelia Gonzalez Montes, Isabel Gonzalo Alonso, Francisco Martinez, Maria Jose Aparisi, Marina Martinez-Matilla, Ana Victoria Marco Hernandez, Miguel Tomás Vila
{"title":"Variant in <i>CACNA1G</i> as a Possible Genetic Modifier of Neonatal Epilepsy in an Infant with a De Novo <i>SCN2A</i> Mutation.","authors":"Juan Jose Nieto-Barcelo, Noelia Gonzalez Montes, Isabel Gonzalo Alonso, Francisco Martinez, Maria Jose Aparisi, Marina Martinez-Matilla, Ana Victoria Marco Hernandez, Miguel Tomás Vila","doi":"10.1055/s-0041-1723958","DOIUrl":"https://doi.org/10.1055/s-0041-1723958","url":null,"abstract":"<p><p>Mutations in <i>SCN2A</i> genes have been described in patients with epilepsy, finding a large phenotypic variability, from benign familial epilepsy to epileptic encephalopathy. To explain this variability, it was proposed the existence of dominant modifier alleles at one or more loci that contribute to determine the severity of the epilepsy phenotype. One example of modifier factor may be the <i>CACNA1G</i> gene, as proved in animal models. We present a 6-day-old male newborn with recurrent seizures in which a mutation in the <i>SCN2A</i> gene is observed, in addition to a variant in <i>CACNA1G</i> gene. Our patient suffered in the first days of life myoclonic seizures, with pathologic intercritical electroencephalogram pattern, requiring multiple drugs to achieve adequate control of them. During the next weeks, the patient progressively improved until complete remission at the second month of life, being possible to withdraw the antiepileptic treatment. We propose that the variant in <i>CACNA1G</i> gene could have acted as a modifier of the epilepsy syndrome produced by the mutation in <i>SCN2A</i> gene in our patient.</p>","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":"12 2","pages":"159-162"},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10118702/pdf/10-1055-s-0041-1723958.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9756695","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 <i>HBG2</i> rs7482144 (C > T) Polymorphism is Linked to HbF Levels but not to the Severity of Sickle Cell Anemia.","authors":"Bhaskar V K S Lakkakula, Smaranika Pattnaik","doi":"10.1055/s-0041-1733950","DOIUrl":"https://doi.org/10.1055/s-0041-1733950","url":null,"abstract":"<p><p>Sickle cell anemia (SCA) is a severe disease characterized by anemia, acute clinical complications, and a relatively short life span. In this disease, abnormal hemoglobin makes the red blood cells deformed, rigid, and sticky. Fetal hemoglobin (HbF) is one of the key modulators of SCA morbidity and mortality. Interindividual HbF variation is a heritable trait that is controlled by polymorphism in genes linked and unlinked to the hemoglobin β gene (HBB). The genetic polymorphisms that determine HbF levels are known to ameliorate acute clinical events. About 190 well-characterized homozygous SCA patients were included in this study. Complete blood count (CBC), high-performance liquid chromatography (HPLC), and clinical investigations were obtained from patient's records. Severity scores were determined by using the combination of anemia, complications, total leucocyte count, and transfusion scores. <i>HBG2</i> rs7482144 polymorphism was genotyped by using the polymerase chain reaction and restriction fragment length polymorphism. The association between <i>HBG2</i> rs7482144 polymorphism and HbF levels as well as the disease severity of SCA were assessed. SCA patients carrying TT genotype were found to have higher HbF levels. In addition, SCA patients with increased severity showed significantly lower levels of hemoglobin, HbF, and hematocrit values. However, the genotypes of <i>HBG2</i> rs7482144 polymorphism were not found to be associated with the risk of disease severity. In summary, this study demonstrated that <i>HBG2</i> rs7482144 polymorphism is linked with HbF levels, but it does not affect disease severity. The sample sizes used and the pattern of association deduced from our small sample size prevents us from extrapolating our findings further.</p>","PeriodicalId":16695,"journal":{"name":"Journal of pediatric genetics","volume":"12 2","pages":"129-134"},"PeriodicalIF":0.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10118708/pdf/10-1055-s-0041-1733950.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9756697","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}