Associations Between Fundus Types and Clinical Manifestations in Patients with RDH12 Gene Mutations

2022 ◽  
Author(s):  
Jing Jin ◽  
Liang Liang ◽  
Kun Jin ◽  
Hai-jiang Zhang ◽  
Rong Liu ◽  
...  
Keyword(s):  
Clinical Manifestations ◽  
Gene Mutations

scholarly journals Novel missense mutation of SASH1 in a Chinese family with dyschromatosis universalis hereditaria

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Lu Cao ◽  
Ruixue Zhang ◽  
Liang Yong ◽  
Shirui Chen ◽  
Hui Zhang ◽  
...  
Keyword(s):  
Missense Mutation ◽  
Sequence Alignment ◽  
Multiple Sequence Alignment ◽  
Molecular Genetic ◽  
Family Members ◽  
Clinical Manifestations ◽  
Gene Mutations ◽  
Mendelian Inheritance ◽  
Chinese Family ◽  
Multiple Sequence

Abstract Background Dyschromatosis universalis hereditaria (DUH) is a pigmentary dermatosis characterized by generalized mottled macules with hypopigmention and hyperpigmention. ABCB6 and SASH1 are recently reported pathogenic genes related to DUH, and the aim of this study was to identify the causative mutations in a Chinese family with DUH. Methods Sanger sequencing was performed to investigate the clinical manifestation and molecular genetic basis of these familial cases of DUH, bioinformatics tools and multiple sequence alignment were used to analyse the pathogenicity of mutations. Results A novel missense mutation, c.1529G>A, in the SASH1 gene was identified, and this mutation was not found in the National Center for Biotechnology Information Database of Short Genetic Variation, Online Mendelian Inheritance in Man, ClinVar, or 1000 Genomes Project databases. All in silico predictors suggested that the observed substitution mutation was deleterious. Furthermore, multiple sequence alignment of SASH1 revealed that the p.S510N mutation was highly conserved during evolution. In addition, we reviewed the previously reported DUH-related gene mutations in SASH1 and ABCB6. Conclusion Although the affected family members had identical mutations, differences in the clinical manifestations of these family members were observed, which reveals the complexity of the phenotype-influencing factors in DUH. Our findings reveal the mutation responsible for DUH in this family and broaden the mutational spectrum of the SASH1 gene.

scholarly journals Prevalence and clinical phenotype of the triplicated α-globin genes and its ethnic and geographical distribution in Guizhou of China

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Xi Luo ◽  
Xiang-mei Zhang ◽  
Liu-song Wu ◽  
Jindong Chen ◽  
Yan Chen
Keyword(s):  
Genetic Counseling ◽  
Peripheral Blood ◽  
Clinical Phenotype ◽  
Globin Gene ◽  
Clinical Manifestations ◽  
Gene Mutations ◽  
Guizhou Province ◽  
Globin Genes ◽  
Phenotype Correlation ◽  
Chi Square

Abstract Background α-thalassemia is relatively endemic in Guizhou province of southwestern China. To predict the clinical manifestations of α-globin gene aberration for genetic counseling, we examined the prevalence of the α-globin triplication and the genotype–phenotype correlation in this subpopulation Methods A cohort of 7644 subjects was selected from nine ethnicities covering four regions in Guizhou province of China. Peripheral blood was collected from each participant for routine blood testing and hemoglobin electrophoresis. PCR-DNA sequencing and Gap-PCR were used to identify the thalassemia gene mutations. Chi-square tests and one-way analysis of variance (ANOVA) were used to statistically analyze the data. Results We found that the frequency of α-globin triplication in Guizhou province was 0.772% (59/7644). Genotypically, the αααanti4.2/αα accounted for 0.523% (40/7644), the αααanti3.7/αα for 0.235% (18/7644), and the αααanti3.7/–SEA for 0.013% (1/7644). The αααanti4.2/αα is more prevalent than the αααanti3.7/αα in Guizhou. In addition, the frequency of the HKαα/αα (that by GAP-PCR is like αααanti4.2/-α3.7) was 0.235% (18/7644). Ethnically, the Tujia group presented the highest prevalence (2.47%) of α-globin triplication. Geographically, the highest frequency of the α-globin triplication was identified in Qiannan region (2.23%). Of the triplicated α-globin cases, 5 coinherited with heterozygote β-thalassemia and presented various clinical manifestations of anemia. Conclusions These data will be used to update the Chinese triplicated α-globin thalassemia database and provide insights into the pathogenesis of thalassemia. These findings will be helpful for the diagnosis of thalassemia and future genetic counseling in those regions.

scholarly journals Clinical manifestations of familial exudative vitreoretinopathy in children with nucleotide sequence alterations in the FZD4 gene

2021 ◽  
Vol 14 (4) ◽  
pp. 52-59
Author(s):  
L. A. Katargina ◽  
V. V. Kadyshev ◽  
E. V. Denisova ◽  
E. A. Geraskina ◽  
A. V. Marakhonov ◽  
...  
Keyword(s):  
Nucleotide Sequence ◽  
Direct Sequencing ◽  
Molecular Genetic ◽  
Clinical Manifestations ◽  
Gene Mutations ◽  
Interdisciplinary Approach ◽  
Ophthalmological Examination ◽  
Photographic Recording ◽  
Familial Exudative Vitreoretinopathy ◽  
National Medical

Familial exudative vitreoretinopathy (FEVR)is a rare genetically heterogeneous disease with multiple types of inheritance (autosomal dominant, autosomal recessive, X-linked) and widely varying clinical features. Up to 40 % of cases of FEVR are associated with mutations of the FZD4 gene.Purpose: to investigate the clinical manifestations of FEVR in children with nucleotide sequence alterations in the FZD4 gene. Material and methods. The Helmholtz National Medical ResearchCenter of Eye Diseases and the ResearchCentre for MedicalGenetics conducted a joint in-depth ophthalmological examination of 18 patients aged from 3 weeks to 17 years with a diagnosis of FEVR, which included a detailed ophthalmoscopy under drug mydriasis, ultrasound and electrophysiological examination, photographic recording of fundus changes using RetCam and Fundus Foto. Molecular genetic examination was carried out by direct sequencing according to Sanger. Results. Nucleotide sequence alterations in the FZD4 gene were detected in 3 patients(16.7 %)from two unrelated families. In one family, a 12-year-old girl wasfound to display the firstsymptoms of ophthalmic pathology (reduced vision, strabismus) at the age of 3.5 years. In another family, the clinical manifestations of FZD4 gene mutations were observed in two children during the first year of life (at the age of 5 and 11 months).Conclusions. The clinical picture of 3 patients with detected changes in the nucleotide sequence of the FZD4 gene is characterized by early manifestation and bilateral asymmetric ophthalmoscopic damage. The results of the study indicate the need for a timely diagnosis of FEVR in young children, recommend an interdisciplinary approach to the study of the disease, which should contribute to a better understanding of pathogenesis, and the development of an effective diagnostic, treatment and rehabilitation algorithm.

scholarly journals A Case Report and Literature Review of Wilson Disease

2020 ◽  
Vol 4 (3) ◽  
Author(s):  
Panpan Chen ◽  
Yingying Zhang ◽  
Linqing Qiu ◽  
Xinxin Yu
Keyword(s):  
Wilson Disease ◽  
Clinical Characteristics ◽  
Clinical Manifestations ◽  
Gene Mutations ◽  
Hereditary Disease ◽  
Abnormal Liver Function ◽  
Atp7b Gene ◽  
Literature Reference ◽  
Urinary Copper

To investigate the clinical characteristics, auxiliary examination and treatment of Wilson’s disease(WD). The clinical data of a child with WD were summarized and analyzed comprehensively in conjunction with the literature reference. WD is a hereditary disease with a large age span, diverse early symptoms, high misdiagnosis rate, abnormal liver function, decreased ceruloplasmin, increased urinary copper, K-F rings, ATP7B gene mutation, ATP7B gene mutations, and abnormalities in abdominal and cranial brain imaging, which can be clearly diagnosed and require lifelong treatment. WD can be diagnosed according to the clinical manifestations and auxiliary examination to reduce misdiagnosis. The timely diagnosis and treatment will improve the prognosis the quality of life.

Abstract 057: Cellular and Genetic Causes of Idiopathic Hyperaldosteronism

Hypertension ◽  
2017 ◽  
Vol 70 (suppl_1) ◽  
Author(s):  
Kei Omata ◽  
Fumitoshi Satoh ◽  
Ryo Morimoto ◽  
Sadayoshi Ito ◽  
Yuto Yamazaki ◽  
...  
Keyword(s):  
Somatic Mutations ◽  
Clinical Manifestations ◽  
Gene Mutations ◽  
Median Number ◽  
Zona Glomerulosa ◽  
Potential Contribution ◽  
Unilateral Adrenalectomy ◽  
Aldosterone Synthase ◽  
Formalin Fixed Paraffin Embedded ◽  
Idiopathic Hyperaldosteronism

Background: Primary aldosteronism (PA) affects ~10% of hypertensive patients and has unilateral and bilateral forms (30%:70%). Unilateral PA is caused by aldosterone-producing adenomas (APA), which express CYP11B2 (aldosterone synthase) and frequently harbor somatic mutations in aldosterone regulating genes ( KCNJ5>>CACNA1D ). We recently demonstrated that adrenals from normotensive patients present with pockets of cell expressing aldosterone synthase (CYP11B2). These aldosterone-producing foci (APF) have somatic gene mutations similar to those found in APA ( CACNA1D >> KCNJ5 ). Bilateral PA, which is typically treated by mineralocorticoid receptor (MR) blockade rather than surgery, is termed idiopathic hyperaldosteronism (IHA). Its pathobiology is largely unknown but has been thought to be due to zona glomerulosa (ZG) hyperplasia. Methods: We studied 11 IHA patients (7 males, 4 females) who had unilateral adrenalectomy. Immunohistochemistry for CYP11B2 and next generation sequencing (NGS) targeting genes found in APA were performed on formalin fixed paraffin embedded adrenal tissue. Results were compared to previously described cohorts of 53 age-matched normotensive patients (29 males, 24 females) which were evaluated similarly. Results: CYP11B2 expression was absent from intervening ZG cells in 8/11 (73%) IHA adrenals, but all adrenals harbored at least one APF. The median number and size of APF per case were significantly larger in IHA than normotensive controls (6.1 vs 0 APF/cm 2 of adrenal cortex and 0.25 vs. 0.16 mm 2 , respectively; p<0.0001 and p<0.006). In this IHA cohort, NGS identified CACNA1D and KCNJ5 somatic mutations in 44/71 (62%) and 1/71 (1%) of APF, respectively. Interpretations. Diffuse CYP11B2 expression in adrenal ZG cells was only observed in 3/11 IHA cases, arguing against ZG hyperplasia as the major underlying pathobiology. Rather, we demonstrated increased and enlarged APF in IHA adrenals compared to normotensive controls, supporting potential contribution to the clinical manifestations of hyperaldosteronism. The frequent occurrence of aldosterone-dysregulating CACNA1D somatic mutations in APF support CACNA1D as a potential therapeutic target in IHA to complement current MR blockade approaches.

scholarly journals Clinical Manifestations of Egfr Gene Mutations in Patients with Adenocarcinoma of the Lung Among Inhabitants of the South Russian Region

2014 ◽  
Vol 25 ◽  
pp. iv562
Author(s):  
D. Vodolazhskiy ◽  
I. Leyman ◽  
A. Antonets ◽  
Y. Lazutin ◽  
K. Dvadnenko ◽  
...  
Keyword(s):  
Clinical Manifestations ◽  
Gene Mutations ◽  
The South ◽  
Egfr Gene ◽  
Adenocarcinoma Of The Lung ◽  
Russian Region

scholarly journals Axenfeld-Rieger Syndrome Associated with Congenital Glaucoma and Cytochrome P4501B1 Gene Mutations

2010 ◽  
Vol 2010 ◽  
pp. 1-6 ◽  
Author(s):  
Mukesh Tanwar ◽  
Tanuj Dada ◽  
Rima Dada
Keyword(s):  
Clinical Manifestations ◽  
Gene Mutations ◽  
Corneal Opacity ◽  
North India ◽  
Congenital Glaucoma ◽  
Causative Gene ◽  
Nasal Bridge ◽  
Rieger Syndrome ◽  
Cytochrome P4501b1 ◽  
Outflow Pathway

Developmental anomalies of the ocular anterior chamber angle may lead to an incomplete development of the structures that form the conventional aqueous outflow pathway. Thus, disorders that present with such dysfunction tend to be associated with glaucoma. Among them, Axenfeld-Rieger (ARS) malformation is a rare clinical entity with an estimated prevalence of one in every 200,000 individuals. The changes in eye morphogenesis in ARS are highly penetrant and are associated with 50% risk of development of glaucoma. Mutations in the cytochrome P4501B1 (CYP1B1) gene have been reported to be associated with primary congenital glaucoma and other forms of glaucoma and mutations in pituitary homeobox 2 (PITX2) gene have been identified in ARS in various studies. This case was negative forPITX2mutations and compound heterozygote forCYP1B1mutations. Clinical manifestations of this patient include bilateral elevated intraocular pressure (>40 mmHg) with increased corneal diameter (>14 mm) and corneal opacity. Patient also had iridocorneal adhesions, anteriorly displaced Schwalbe line, anterior insertion of iris, broad nasal bridge and protruding umbilicus. This is the first study from north India reportingCYP1B1mutations in Axenfeld-Rieger syndrome with bilateral buphthalmos and early onset glaucoma. Result of this study supports the role ofCYP1B1as a causative gene in ASD disorders and its role in oculogenesis.

scholarly journals Distal renal tubular acidosis. Clinical manifestations in patients with different underlying gene mutations

2018 ◽  
Vol 33 (9) ◽  
pp. 1523-1529 ◽  
Author(s):  
Marta Alonso-Varela ◽  
◽  
Helena Gil-Peña ◽  
Eliecer Coto ◽  
Juan Gómez ◽  
...  
Keyword(s):  
Renal Tubular Acidosis ◽  
Clinical Manifestations ◽  
Gene Mutations ◽  
Distal Renal Tubular Acidosis ◽  
Renal Tubular

scholarly journals SGPL1 Deficiency: A Rare Cause of Primary Adrenal Insufficiency

2018 ◽  
Vol 104 (5) ◽  
pp. 1484-1490 ◽  
Author(s):  
Nikolaos Settas ◽  
Rebecca Persky ◽  
Fabio R Faucz ◽  
Nicole Sheanon ◽  
Antonis Voutetakis ◽  
...  
Keyword(s):  
Nephrotic Syndrome ◽  
Adrenal Insufficiency ◽  
Brain Mri ◽  
Clinical Manifestations ◽  
Gene Mutations ◽  
Primary Adrenal Insufficiency ◽  
Sphingosine 1 Phosphate ◽  
Recessive Genes ◽  
Initiation Of Therapy ◽  
Glucocorticoid Deficiency

Abstract Context Multiple autosomal recessive genes have been etiologically linked to primary adrenal insufficiency (PAI). Recently, sphingosine-1-phosphate lyase 1 (SGPL1) gene mutations were recognized as a cause of steroid-resistant nephrotic syndrome type 14 (NPHS14), a sphingolipidosis with multisystemic manifestations, including PAI. Objective To check if SGPL1 mutations are involved in the pathogenesis of PAI in patients who do not exhibit nephrotic syndrome. Methods Sequencing of the SGPL1 gene in 21 patients with familial glucocorticoid disease or triple A syndrome. Results We identified two missense SGPL1 variants in four patients, two of whom were first cousins. We describe in detail the proband, a boy born to Saudi Arabian consanguineous parents with a homozygous c.665G&gt;A, p.R222Q SGPL1 variant. The patient presented with hypoglycemia and seizures at age 2 years and was ultimately diagnosed with PAI (isolated glucocorticoid deficiency). Brain MRI showed abnormalities in the basal ganglia consistent with a degenerative process albeit the patient had no neurologic symptoms. Conclusions New genetic causes of PAI continue to be identified. We suggest that screening for SGPL1 mutations should not be reserved only for patients with nephrotic syndrome but may also include patients with PAI who lack other clinical manifestations of NPHS14 because, in certain cases, kidney disease and accompanying features might develop. Timely diagnosis of this specific sphingolipidosis while the kidneys still function normally can lead to prompt initiation of therapy and improve outcome.

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