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Kovalskaia VA, Kungurtseva AL, Bostanova FM, Vasiliev PA, Tabakov VY, Orlova MD, Povolotskaya IS, Novoselova OG, Bikanov RA, Akhyamova MA, Tikhonovich YV, Popovich AV, Vitebskaya AV, Dadali EL, Ryzhkova OP. The Genetic Basis of the First Patient with Wiedemann-Rautenstrauch Syndrome in the Russian Federation. Genes (Basel) 2024; 15:180. [PMID: 38397171 PMCID: PMC10887809 DOI: 10.3390/genes15020180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/15/2024] [Accepted: 01/18/2024] [Indexed: 02/25/2024] Open
Abstract
Bi-allelic pathogenic variations within POLR3A have been associated with a spectrum of hereditary disorders. Among these, a less frequently observed condition is Wiedemann-Rautenstrauch syndrome (WRS), also known as neonatal progeroid syndrome. This syndrome typically manifests neonatally and is characterized by growth retardation, evident generalized lipodystrophy with distinctively localized fat accumulations, sparse scalp hair, and atypical facial features. Our objective was to elucidate the underlying molecular mechanisms of Wiedemann-Rautenstrauch syndrome (WRS). In this study, we present a clinical case of a 7-year-old female patient diagnosed with WRS. Utilizing whole-exome sequencing (WES), we identified a novel missense variant c.3677T>C (p.Leu1226Pro) in the POLR3A gene (NM_007055.4) alongside two cis intronic variants c.1909+22G>A and c.3337-11T>C. Via the analysis of mRNA derived from fibroblasts, we reconfirmed the splicing-affecting nature of the c.3337-11T>C variant. Furthermore, our investigation led to the reclassification of the c.3677T>C (p.Leu1226Pro) variant as a likely pathogenic variant. Therefore, this is the first case demonstrating the molecular genetics of a patient with Wiedemann-Rautenstrauch syndrome from the Russian Federation. A limited number of clinical cases have been documented until this moment; therefore, broadening the linkage between phenotype and molecular changes in the POLR3A gene will significantly contribute to the comprehensive understanding of the molecular basis of POLR3A-related disorders.
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Affiliation(s)
| | - Anastasiia L. Kungurtseva
- Pediatric Endocrinology Department, I.M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (A.L.K.)
| | | | - Peter A. Vasiliev
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (V.A.K.)
| | | | - Mariia D. Orlova
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (V.A.K.)
| | | | | | | | | | - Yulia V. Tikhonovich
- Pediatric Endocrinology Department, I.M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (A.L.K.)
| | - Anastasiia V. Popovich
- Pediatric Endocrinology Department, I.M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (A.L.K.)
| | - Alisa V. Vitebskaya
- Pediatric Endocrinology Department, I.M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (A.L.K.)
| | - Elena L. Dadali
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (V.A.K.)
| | - Oxana P. Ryzhkova
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (V.A.K.)
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Danilov SM, Jain MS, A. Petukhov P, Kurilova OV, Ilinsky VV, Trakhtman PE, Dadali EL, Samokhodskaya LM, Kamalov AA, Kost OA. Blood ACE Phenotyping for Personalized Medicine: Revelation of Patients with Conformationally Altered ACE. Biomedicines 2023; 11:biomedicines11020534. [PMID: 36831070 PMCID: PMC9953529 DOI: 10.3390/biomedicines11020534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/04/2023] [Accepted: 02/08/2023] [Indexed: 02/16/2023] Open
Abstract
Background: The angiotensin-converting enzyme (ACE) metabolizes a number of important peptides participating in blood pressure regulation and vascular remodeling. Elevated blood ACE is a marker for granulomatous diseases and elevated ACE expression in tissues is associated with increased risk of cardiovascular diseases. Objective and Methodology: We applied a novel approach -ACE phenotyping-to find a reason for conformationally impaired ACE in the blood of one particular donor. Similar conformationally altered ACEs were detected previously in 2-4% of the healthy population and in up to 20% of patients with uremia, and were characterized by significant increase in the rate of angiotensin I hydrolysis. Principal findings: This donor has (1) significantly increased level of endogenous ACE inhibitor in plasma with MW less than 1000; (2) increased activity toward angiotensin I; (3) M71V mutation in ABCG2 (membrane transporter for more than 200 compounds, including bilirubin). We hypothesize that this patient may also have the decreased level of free bilirubin in plasma, which normally binds to the N domain of ACE. Analysis of the local conformation of ACE in plasma of patients with Gilbert and Crigler-Najjar syndromes allowed us to speculate that binding of mAbs 1G12 and 6A12 to plasma ACE could be a natural sensor for estimation of free bilirubin level in plasma. Totally, 235 human plasma/sera samples were screened for conformational changes in soluble ACE. Conclusions/Significance: ACE phenotyping of plasma samples allows us to identify individuals with conformationally altered ACE. This type of screening has clinical significance because this conformationally altered ACE could not only result in the enhancement of the level of angiotensin II but could also serve as an indicator of free bilirubin levels.
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Affiliation(s)
- Sergei M. Danilov
- Department of Medicine, Division of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois, Chicago, IL 60607, USA
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ 85721, USA
- Medical Center, Lomonosov Moscow State University, 119992 Moscow, Russia
- Correspondence:
| | - Mark S. Jain
- Medical Center, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Pavel A. Petukhov
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois, Chicago, IL 60612, USA
| | - Olga V. Kurilova
- Medical Center, Lomonosov Moscow State University, 119992 Moscow, Russia
| | | | - Pavel E. Trakhtman
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 117997 Moscow, Russia
| | | | | | - Armais A. Kamalov
- Medical Center, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Olga A. Kost
- Chemistry Faculty, Lomonosov Moscow State University, 119991 Moscow, Russia
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Ionova SA, Murtazina AF, Tebieva IS, Getoeva ZK, Dadali EL, Chausova PA, Shchagina OA, Marakhonov AV, Kutsev SI, Zinchenko RA. The Presentation of Two Unrelated Clinical Cases from the Republic of North Ossetia-Alania with the Same Previously Undescribed Variant in the COL6A2 Gene. Int J Mol Sci 2022; 23:ijms232012127. [PMID: 36292982 PMCID: PMC9602836 DOI: 10.3390/ijms232012127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/01/2022] [Accepted: 10/08/2022] [Indexed: 11/16/2022] Open
Abstract
Here, we described three affected boys from two unrelated families of Ossetian-Digor origin from the Republic of North Ossetia-Alania who were admitted to the Research Centre for Medical Genetics with unspecified muscular dystrophy. High-throughput sequencing was performed and revealed two novel frameshift variants in the COL6A2 gene (NM_001849.3) in a heterozygous state each in both cases: c.508_535delinsCTGTGG and c.1659_1660del (case 1) and c.1689del and c.1659_1660del (case 2). In two cases, the same nucleotide variant in the COL6A2 gene (c.1659_1660del) was observed. We have suggested that the variant c.1659_1660del may be common in the Ossetian-Digor population because two analyzed families have the same ancestry from the same subethnic group of Ossetians). The screening for an asymptomatic carriage of the nucleotide variant c.1659_1660del in 54 healthy donors from Ossetian-Digor population revealed that the estimated carrier frequency is 0.0093 (CI: 0.0002–0.0505), which is high for healthy carriers of the pathogenic variant. Molecular genetic, anamnestic data and clinical examination results allowed us to diagnose Ullrich muscular dystrophy in those affected boys. Genetic heterogeneity and phenotypic diversity of muscular dystrophies complicate diagnosis. It is important to make a differential diagnosis of such conditions and use HTS methods to determine the most accurate diagnosis.
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Affiliation(s)
- Sofya A. Ionova
- Research Centre for Medical Genetics, Moskvorechie str. 1, 115522 Moscow, Russia
- Correspondence: ; Tel.: +7-999-926-73-82
| | - Aysylu F. Murtazina
- Research Centre for Medical Genetics, Moskvorechie str. 1, 115522 Moscow, Russia
| | - Inna S. Tebieva
- North Ossetian State Medical Academy of the Ministry of Health of the Russian Federation, Pushkinskaya str. 40, 362019 Vladikavkaz, Russia
- Republican Children’s Clinical Hospital, Barbashova str. 33, 362003 Vladikavkaz, Russia
| | - Zalina K. Getoeva
- Pravoberezhnaya Central District Clinical Hospital, Kominterna str. 12, 363020 Beslan, Russia
| | - Elena L. Dadali
- Research Centre for Medical Genetics, Moskvorechie str. 1, 115522 Moscow, Russia
| | - Polina A. Chausova
- Research Centre for Medical Genetics, Moskvorechie str. 1, 115522 Moscow, Russia
| | - Olga A. Shchagina
- Research Centre for Medical Genetics, Moskvorechie str. 1, 115522 Moscow, Russia
| | - Andrey V. Marakhonov
- Research Centre for Medical Genetics, Moskvorechie str. 1, 115522 Moscow, Russia
| | - Sergey I. Kutsev
- Research Centre for Medical Genetics, Moskvorechie str. 1, 115522 Moscow, Russia
| | - Rena A. Zinchenko
- Research Centre for Medical Genetics, Moskvorechie str. 1, 115522 Moscow, Russia
- N.A. Semashko National Research Institute of Public Health, Vorontsovo Pole str. 12-1, 105064 Moscow, Russia
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Yurchenko DA, Minzhenkova ME, Dadali EL, Markova ZG, Rudenskaya GE, Matyushchenko GN, Kanivets IV, Shilova NV. Clinical Manifestations of Various Molecular Cytogenetic Variants of Eight Cases of “8p Inverted Duplication/Deletion Syndrome”. Biomedicines 2022; 10:biomedicines10030567. [PMID: 35327368 PMCID: PMC8945196 DOI: 10.3390/biomedicines10030567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 02/23/2022] [Accepted: 02/25/2022] [Indexed: 11/16/2022] Open
Abstract
Inverted duplication syndrome with an adjacent terminal deletion of the short arm of chromosome 8—inv dup del(8p)—is a rare complex structural chromosomal rearrangement with a wide range of clinical manifestations. Molecular cytogenetic variants of chromosomal imbalance depend on the mechanism of rearrangement formation. We analyzed the clinical–genetic and molecular cytogenetic characteristics of the 8p inverted duplication/deletion syndrome, as well as the genotype–phenotype correlation in eight unrelated cases with the rearrangement of inv dup del(8p). The main clinical manifestations in all cases are psychomotor and language delay, muscle hypotonia, and dysmorphic facial features. Malformations of the central nervous system, such as corpus callosum agenesis, were found in five cases. Seizures were reported in only one case. We found that the cause of the formation of the rearrangement was generally ectopic recombination (seven out of eight cases) and this was due to U-type exchange in only one case. Depending on the mechanism of formation, the characteristics of the genomic imbalance were different, which made it possible to identify two molecular cytogenetic variants in the cases we describe here. No association between molecular cytogenetic variants and clinical manifestations was found.
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Affiliation(s)
- Darya A. Yurchenko
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (M.E.M.); (E.L.D.); (Z.G.M.); (G.E.R.); (G.N.M.); (N.V.S.)
- Correspondence: ; Tel.: +7-(499)-612-80-40
| | - Marina E. Minzhenkova
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (M.E.M.); (E.L.D.); (Z.G.M.); (G.E.R.); (G.N.M.); (N.V.S.)
| | - Elena L. Dadali
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (M.E.M.); (E.L.D.); (Z.G.M.); (G.E.R.); (G.N.M.); (N.V.S.)
| | - Zhanna G. Markova
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (M.E.M.); (E.L.D.); (Z.G.M.); (G.E.R.); (G.N.M.); (N.V.S.)
| | - Galina E. Rudenskaya
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (M.E.M.); (E.L.D.); (Z.G.M.); (G.E.R.); (G.N.M.); (N.V.S.)
| | - Galina N. Matyushchenko
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (M.E.M.); (E.L.D.); (Z.G.M.); (G.E.R.); (G.N.M.); (N.V.S.)
| | | | - Nadezda V. Shilova
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (M.E.M.); (E.L.D.); (Z.G.M.); (G.E.R.); (G.N.M.); (N.V.S.)
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Shurygina MF, Simonett JM, Parker MA, Mitchell A, Grigorian F, Lifton J, Nagiel A, Shpak AA, Dadali EL, Mishina IA, Weleber RG, Yang P, Pennesi ME. Genotype Phenotype Correlation and Variability in Microcephaly Associated With Chorioretinopathy or Familial Exudative Vitreoretinopathy. Invest Ophthalmol Vis Sci 2021; 61:2. [PMID: 33137195 PMCID: PMC7645200 DOI: 10.1167/iovs.61.13.2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Purpose The purpose of this study was to analyze the natural history and phenotypic overlap of patients with microcephaly and a chorioretinopathy or familial exudative vitreoretinopathy (FEVR) ocular phenotype caused by mutations in KIF11, TUBGCP4, or TUBGCP6. Methods Patients diagnosed with congenital microcephaly and chorioretinopathy or FEVR were included. Molecular investigations consisted of targeted genetic sequencing. Data from medical records, ophthalmologic examination and imaging, electroretinography, and visual fields were analyzed for systemic and ophthalmic features and evidence of posterior segment disease progression. Results Twelve patients from 9 families were included and had a median of 8 years of follow-up. Nine patients had KIF11 variants, two had heterozygous TUBGCP6 variants, and one had heterozygous variants in TUBGCP4. All patients had reduced visual function and multiple individuals and families showed features of both chorioretinopathy and FEVR. Progression of posterior segment disease was highly variable, with some degree of increased atrophy of the macula or peripheral retina or increased vitreoretinal traction observed in 9 of 12 patients. Conclusions Microcephaly due to mutations in KIF11, TUBGCP4, or TUBGCP6 can be associated with retinal disease on a spectrum from chorioretinal atrophy to FEVR-like posterior segment changes. Visually significant disease progression can occur and patients should be monitored closely by a team experienced in ophthalmic genetics.
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Affiliation(s)
- Maria F Shurygina
- S. Fyodorov Eye Microsurgery Federal State Institution, Moscow, Russia
| | - Joseph M Simonett
- Casey Eye Institute, Oregon Health and Science University, Portland, Oregon, United States
| | - Maria A Parker
- Casey Eye Institute, Oregon Health and Science University, Portland, Oregon, United States
| | - Amanda Mitchell
- Casey Eye Institute, Oregon Health and Science University, Portland, Oregon, United States
| | - Florin Grigorian
- University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States
| | - Jacob Lifton
- Roski Eye Institute, Department of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, California, United States
| | - Aaron Nagiel
- Roski Eye Institute, Department of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, California, United States.,The Vision Center, Department of Surgery, Children's Hospital Los Angeles, Los Angeles, California, United States.,The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, California, United States
| | - Alexander A Shpak
- S. Fyodorov Eye Microsurgery Federal State Institution, Moscow, Russia
| | - Elena L Dadali
- The Vision Center, Department of Surgery, Children's Hospital Los Angeles, Los Angeles, California, United States
| | - Irina A Mishina
- The Vision Center, Department of Surgery, Children's Hospital Los Angeles, Los Angeles, California, United States
| | - Richard G Weleber
- Casey Eye Institute, Oregon Health and Science University, Portland, Oregon, United States
| | - Paul Yang
- Casey Eye Institute, Oregon Health and Science University, Portland, Oregon, United States
| | - Mark E Pennesi
- Casey Eye Institute, Oregon Health and Science University, Portland, Oregon, United States
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Semenova NA, Kurkina MV, Marakhonov AV, Dadali EL, Taran NN, Strokova TV. A novel mutation in the PEX26 gene in a family from Dagestan with members affected by Zellweger spectrum disorder. Mol Genet Metab Rep 2021; 27:100754. [PMID: 33912394 PMCID: PMC8065337 DOI: 10.1016/j.ymgmr.2021.100754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/02/2021] [Accepted: 04/02/2021] [Indexed: 11/30/2022] Open
Abstract
Background Peroxisome biogenesis disorders (PBD) are a heterogeneous group of autosomal recessive disorders that affect multiple organ systems. Approximately 80% of PBD patients are classifiedin the Zellweger syndrome spectrum, which is generally caused by mutations in the PEX1, PEX6, PEX10, PEX12, or PEX26 genes. Methods We present the clinical characteristics of three male members with cholestatic hepatopathy and developmental delay. Next-Generation Sequencing (NGS) was used to analyze 52 genes responsible for hereditary diseases with cholestasis. The variant was confirmed by Sanger sequencing. Dried blood spot (DBS) samples of 537 newborns from Dagestan were tested for the presence of that mutation. The frequency of the mutant allele in the population of Dagestan wasestimated using the Hardy–Weinberg equilibrium. Results Symptoms of disease manifested from the first months of life as severe hepatic dysfunction and developmental delay. Physical examination showed jaundice, hepatosplenomegaly, coagulopathy, and normal or slightly elevated level of gamma-glutamyltransferase (GGT), similar to progressive familial intrahepatic cholestasis. The level of C26 and ratio of C26/C22 in plasma were increased. A nucleotide variant in the PEX26 gene was identified: NM_017929.6:c.347 T>A, p.(Leu116Gln) in a homozygous state. Parents and healthy siblings were heterozygous for the mutant allele. This variant was not described in the Database of Single Nucleotide Polymorphism (dbSNP), it is not registered in the Human Gene Mutation Database (HGMD) v. 2020.1. The frequency of the mutant allele in the population of Dagestan is estimated to be less than 0.000931 (99% CI, 0.000929–0.000934). Conclusions Our clinical cases from Dagestan describe the phenotype associated with the c.347 T>A,p.(Leu116Gln), variant in the PEX26 gene. We show that the onset of the clinical picture in patients with Zellweger syndrome spectrum could start with severe hepatic dysfunction and cholestasis. We suggest that biochemical screening of PBD in infants with cholestasis is necessary.
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Key Words
- ALT, alanine aminotransferase
- AST, aspartate aminotransferase
- CI, confidence interval
- Cholestasis
- DBS, dried blood spot
- GGT, gamma-glutamyltranspeptidase
- Hepatic dysfunction
- LDG, lactate dehydrogenase
- OMIM, Online Mendelian Inheritance in Man
- PBD, peroxisome biogenesis disorders
- PEX26 gene
- VLCFA, very-long-chain fatty acids
- ZSD, Zellweger spectrum disorders
- Zellweger syndrome spectrum
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Affiliation(s)
- Natalia A Semenova
- Research Centre for Medical Genetics, 1 Moskvorechye Street, Moscow 115522, Russian Federation
| | - Marina V Kurkina
- Research Centre for Medical Genetics, 1 Moskvorechye Street, Moscow 115522, Russian Federation
| | - Andrey V Marakhonov
- Research Centre for Medical Genetics, 1 Moskvorechye Street, Moscow 115522, Russian Federation
| | - Elena L Dadali
- Research Centre for Medical Genetics, 1 Moskvorechye Street, Moscow 115522, Russian Federation
| | - Natalia N Taran
- Federal Research Centre of Nutrition and Biotechnology, Kashirskoe shosse, d. 21, Moscow 115446, Russian Federation
| | - Tatyana V Strokova
- Federal Research Centre of Nutrition and Biotechnology, Kashirskoe shosse, d. 21, Moscow 115446, Russian Federation
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Rudenskaya GE, Guseva DM, Mironovich OL, Kadnikova VA, Dadali EL, Komar'kov IF, Novoselova OG, Ryzhkova OP. [AP4-assocated hereditary spastic paraplegias]. Zh Nevrol Psikhiatr Im S S Korsakova 2021; 121:71-78. [PMID: 33728854 DOI: 10.17116/jnevro202112102171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE In the course of studies of spastic paraplegias in Russian patients to detect AP4-associated forms, estimate their proportion in the total SPG group and analyze clinical and molecular characteristics. MATERIAL AND METHODS Five families of Russian ethnicity: four with SPG47, one with SPG51 (4 girls and a boy aged 2.5-9 years) were studied. Clinical and genealogical methods, whole-exome sequencing (WES) and verification by familial Sanger sequencing were used. RESULTS In our total group, including 118 families with 21 different forms, SPG AP4-associated forms accounted for 4.2% owing mainly to SPG47 (3.4%, 5th place in SPG structure; 20% and 2nd place in AE subgroup.) In non-consanguineous, unrelated SPG47 families three patients had identical genotypes: homozygosity for an earlier reported mutation c.1160_1161 delCA (p.Thr387ArgfsTer30) in AP4B1 exon 6; the 4th patient was compound-heterozygous for the same mutation and novel c.1240C>T (p.Gln414Ter) in exon 7. Frequency of c.1160_1161 delCA may be caused by founder effect in Slavic populations though the idea needs additional studies. The SPG51 patient was compound heterozygous for novel AP4E1 mutations c.2604delA (p.Ser868fs) and c.3346A>G (p.Arg1116Gly). Parent's heterozygosity in all cases was confirmed by Sanger sequencing. Phenotypes were typical: early development delay, muscle hypotony transforming into sever spasticity, mental deficiency, microceplaly (in all SPG47 cases), epilepsy (in 3 SPG47 and SPG51 cases), MRI changes, mainly hydrocephalus and/or hypoplasia of corpus callosum (in 3 SPG47 cases) and few extraneural signs. CONCLUSION AP4-associated SPG should be taken into consideration in patients with early-onset severe nervous diseases mimicking non-genetic organic CNS disorders and massive exome sequencing (WES or other variants) should be performed.
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Affiliation(s)
| | - D M Guseva
- Research Centre for Medical Genetics, Moscow, Russia
| | | | - V A Kadnikova
- Research Centre for Medical Genetics, Moscow, Russia
| | - E L Dadali
- Research Centre for Medical Genetics, Moscow, Russia
| | | | | | - O P Ryzhkova
- Research Centre for Medical Genetics, Moscow, Russia
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Altamura C, Ivanova EA, Imbrici P, Conte E, Camerino GM, Dadali EL, Polyakov AV, Kurbatov SA, Girolamo F, Carratù MR, Desaphy JF. Pathomechanisms of a CLCN1 Mutation Found in a Russian Family Suffering From Becker's Myotonia. Front Neurol 2020; 11:1019. [PMID: 33013670 PMCID: PMC7500137 DOI: 10.3389/fneur.2020.01019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 08/04/2020] [Indexed: 11/13/2022] Open
Abstract
Objective: Myotonia congenita (MC) is a rare muscle disease characterized by sarcolemma over-excitability inducing skeletal muscle stiffness. It can be inherited either as an autosomal dominant (Thomsen's disease) or an autosomal recessive (Becker's disease) trait. Both types are caused by loss-of-function mutations in the CLCN1 gene, encoding for ClC-1 chloride channel. We found a ClC-1 mutation, p.G411C, identified in Russian patients who suffered from a severe form of Becker's disease. The purpose of this study was to provide a solid correlation between G411C dysfunction and clinical symptoms in the affected patient. Methods: We provide clinical and genetic information of the proband kindred. Functional studies include patch-clamp electrophysiology, biotinylation assay, western blot analysis, and confocal imaging of G411C and wild-type ClC-1 channels expressed in HEK293T cells. Results: The G411C mutation dramatically abolished chloride currents in transfected HEK cells. Biochemical experiments revealed that the majority of G411C mutant channels did not reach the plasma membrane but remained trapped in the cytoplasm. Treatment with the proteasome inhibitor MG132 reduced the degradation rate of G411C mutant channels, leading to their expression at the plasma membrane. However, despite an increase in cell surface expression, no significant chloride current was recorded in the G411C-transfected cell treated with MG132, suggesting that this mutation produces non-functional ClC-1 chloride channels. Conclusion: These results suggest that the molecular pathophysiology of G411C is linked to a reduced plasma membrane expression and biophysical dysfunction of mutant channels, likely due to a misfolding defect. Chloride current abolition confirms that the mutation is responsible for the clinical phenotype.
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Affiliation(s)
- Concetta Altamura
- Section of Pharmacology, Department of Biomedical Sciences and Human Oncology, School of Medicine, University of Bari Aldo Moro, Bari, Italy
| | - Evgeniya A Ivanova
- N.P. Bochkov's Research Centre for Medical Genetics, Federal State Budgetary Scientific Institution, Moscow, Russia
| | - Paola Imbrici
- Section of Pharmacology, Department of Pharmacy-Drug Sciences, University of Bari Aldo Moro, Bari, Italy
| | - Elena Conte
- Section of Pharmacology, Department of Pharmacy-Drug Sciences, University of Bari Aldo Moro, Bari, Italy
| | - Giulia Maria Camerino
- Section of Pharmacology, Department of Pharmacy-Drug Sciences, University of Bari Aldo Moro, Bari, Italy
| | - Elena L Dadali
- N.P. Bochkov's Research Centre for Medical Genetics, Federal State Budgetary Scientific Institution, Moscow, Russia
| | - Alexander V Polyakov
- N.P. Bochkov's Research Centre for Medical Genetics, Federal State Budgetary Scientific Institution, Moscow, Russia
| | | | - Francesco Girolamo
- Unit of Human Anatomy and Histology, Department of Basic Medical Sciences, Neuroscience, and Sense Organs, School of Medicine, University of Bari Aldo Moro, Bari, Italy
| | - Maria Rosaria Carratù
- Section of Pharmacology, Department of Biomedical Sciences and Human Oncology, School of Medicine, University of Bari Aldo Moro, Bari, Italy
| | - Jean-François Desaphy
- Section of Pharmacology, Department of Biomedical Sciences and Human Oncology, School of Medicine, University of Bari Aldo Moro, Bari, Italy
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Rudenskaya GE, Kadnikova VA, Ryzhkova OP, Bessonova LA, Dadali EL, Guseva DS, Markova TV, Khmelkova DN, Polyakov AV. KIF1A-related autosomal dominant spastic paraplegias (SPG30) in Russian families. BMC Neurol 2020; 20:290. [PMID: 32746806 PMCID: PMC7398351 DOI: 10.1186/s12883-020-01872-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 07/28/2020] [Indexed: 12/14/2022] Open
Abstract
Background Spastic paraplegia type 30 (SPG30) caused by KIF1A mutations was first reported in 2011 and was initially considered a very rare autosomal recessive (AR) form. In the last years, thanks to the development of massive parallel sequencing, SPG30 proved to be a rather common autosomal dominant (AD) form of familial or sporadic spastic paraplegia (SPG),, with a wide range of phenotypes: pure and complicated. The aim of our study is to detect AD SPG30 cases and to examine their molecular and clinical characteristics for the first time in the Russian population. Methods Clinical, genealogical and molecular methods were used. Molecular methods included massive parallel sequencing (MPS) of custom panel ‘spastic paraplegias’ with 62 target genes complemented by familial Sanger sequencing. One case was detected by the whole -exome sequencing. Results AD SPG30 was detected in 10 unrelated families, making it the 3rd (8.4%) most common SPG form in the cohort of 118 families. No AR SPG30 cases were detected. In total, 9 heterozygous KIF1A mutations were detected, with 4 novel and 5 known mutations. All the mutations were located within KIF1A motor domain. Six cases had pure phenotypes, of which 5 were familial, where 2 familial cases demonstrated incomplete penetrance, early onset and slow relatively benign SPG course. All 4 complicated cases were caused by novel mutations without familial history. The phenotypes varied from severe in two patients (e.g. lack of walking, pronounced mental retardation) to relatively mild non-disabling symptoms in two others. Conclusion AD SPG30 is one of the most common forms of SPG in Russia, the disorder has pronounced clinical variability while pure familial cases represent a significant part.
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Affiliation(s)
- G E Rudenskaya
- Federal State Budgetary Scientific Institution "Research Centre for Medical Genetics" (RCMG), Moscow, Russia
| | - V A Kadnikova
- Federal State Budgetary Scientific Institution "Research Centre for Medical Genetics" (RCMG), Moscow, Russia.
| | - O P Ryzhkova
- Federal State Budgetary Scientific Institution "Research Centre for Medical Genetics" (RCMG), Moscow, Russia
| | - L A Bessonova
- Federal State Budgetary Scientific Institution "Research Centre for Medical Genetics" (RCMG), Moscow, Russia
| | - E L Dadali
- Federal State Budgetary Scientific Institution "Research Centre for Medical Genetics" (RCMG), Moscow, Russia
| | - D S Guseva
- Federal State Budgetary Scientific Institution "Research Centre for Medical Genetics" (RCMG), Moscow, Russia
| | - T V Markova
- Federal State Budgetary Scientific Institution "Research Centre for Medical Genetics" (RCMG), Moscow, Russia
| | | | - A V Polyakov
- Federal State Budgetary Scientific Institution "Research Centre for Medical Genetics" (RCMG), Moscow, Russia
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Dadali EL, Mishina IA, Borovikov AO, Sharkov AA, Kanivets IV. [Clinical and genetic characteristics of epilepsy caused by mutations in the PCDH19 gene (OMIM: 300088)]. Zh Nevrol Psikhiatr Im S S Korsakova 2020; 120:55-61. [PMID: 32105270 DOI: 10.17116/jnevro202012001155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
AIM To analyze clinical and genetic characteristics of PCDH19-associated epilepsy in a sample of patients from the Russian population. MATERIAL AND METHODS The sample of patients with early epileptic encephalopathies included 16 people aged 10 month to 30 years. All patients underwent neurological examination according to standard methods, exome sequencing and EEG monitoring. RESULTS Most of the identified mutations led to a shift in the reading frame or the formation of a termination codon. Six of them were duplications, four were deletions of one nucleotide, and three were nonsense mutations. Consistent with earlier studies, the authors identified the polymorphism of clinical manifestations of seizures that did not depend on the type of mutation and its localization. CONCLUSION Based on the study of the clinical and genetic characteristics of the patients, the authors conclude that the so-called 'hot spots' are present in the PCDH19 gene, which are more common in the group of patients with mutations in this gene, and that the clinical picture of early infantile epileptic encephalopathy type 9 is variable.
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Affiliation(s)
- E L Dadali
- Federal State Budgetary Institution 'Research Centre for Medical Genetics', Moscow, Russia; Pirogov Russian National Research Medical University, Moscow, Russia
| | - I A Mishina
- Federal State Budgetary Institution 'Research Centre for Medical Genetics', Moscow, Russia
| | - A O Borovikov
- Federal State Budgetary Institution 'Research Centre for Medical Genetics', Moscow, Russia
| | - A A Sharkov
- Pirogov Russian National Research Medical University, Moscow, Russia
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11
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Zinchenko RA, Makaov AK, Marakhonov AV, Galkina VA, Kadyshev VV, El’chinova GI, Dadali EL, Mikhailova LK, Petrova NV, Petrina NE, Vasilyeva TA, Gundorova P, Polyakov AV, Alexandrova OY, Kutsev SI, Ginter EK. Epidemiology of Hereditary Diseases in the Karachay-Cherkess Republic. Int J Mol Sci 2020; 21:E325. [PMID: 31947737 PMCID: PMC6981994 DOI: 10.3390/ijms21010325] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 12/22/2019] [Accepted: 12/27/2019] [Indexed: 11/16/2022] Open
Abstract
Prevalence and allelic heterogeneity of hereditary diseases (HDs) could vary significantly in different human populations. Current knowledge of HDs distribution in populations is generally limited to either European data or analyses of isolated populations which were performed several decades ago. Thus, an acknowledgement of the HDs prevalence in different modern open populations is important. The study presents the results of a genetic epidemiological study of hereditary diseases (HDs) in the population of the Karachay-Cherkess Republic (KChR). Clinical screening of a population of 410,367 people for the identification of HDs was conducted. The population surveyed is represented by five major ethnic groups-Karachays, Russians, Circassians, Abazins, Nogais. The study of the populations was carried out in accordance with the proprietary protocol of genetic epidemiological examination designed to identify >3500 HDs easily diagnosed during clinical examination by qualified specialists specializing in the HDs. The protocol consists of the population genetic and medical genetic sections and is intended for comprehensive population analysis based on the data on different genetic systems, including the genes of HDs, DNA polymorphisms, demographic data collected during hospital-based survey. 8950 families (with 10,125 patients) with presumably the HDs were initially identified as a result of the survey and data collection through various sources of registration (from 1156 medical workers from 163 medical institutions). A diagnosis of hereditary pathology was established in 1849 patients (from 1295 families). Two hundred and thirty nosological forms were revealed (in 1857 patients from 1295 families). The total prevalence of HDs was 1:221. Differences between populations and ethnic groups were identified: 1:350 in Russians, 1:195 in Karachays, 1:199 in Circassians, 1:218 in Abazins, 1:135 in Nogais. Frequent diseases were determined, the presence of marked genetic heterogeneity was identified during the confirmatory DNA diagnosis. To explain the reasons for the differentiation of populations by load of HD, a correlation analysis was carried out between the FST (random inbreeding) in populations and HDs load values. This analysis showed genetic drift is probably one of the leading factors determining the differentiation of KChR populations by HDs load. For the first time, the size of the load and spectrum of HDs in the populations of the KChR are determined. We have demonstrated genetic drift to be one of the main factors of the population dynamics in studied population. A significant genetic heterogeneity of HDs, both allelic and locus, was revealed in KChR.
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Affiliation(s)
- Rena A. Zinchenko
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (R.A.Z.); (V.A.G.); (V.V.K.); (G.I.E.); (E.L.D.); (N.V.P.); (N.E.P.); (T.A.V.); (P.G.); (A.V.P.); (S.I.K.); (E.K.G.)
- N.A. Semashko National Research Institute of Public Health, 105064 Moscow, Russia
| | - Amin Kh. Makaov
- Municipal Budgetary Health Care Setting “Khabez Central District Hospital”, 369400 Khabez, Russia;
| | - Andrey V. Marakhonov
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (R.A.Z.); (V.A.G.); (V.V.K.); (G.I.E.); (E.L.D.); (N.V.P.); (N.E.P.); (T.A.V.); (P.G.); (A.V.P.); (S.I.K.); (E.K.G.)
| | - Varvara A. Galkina
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (R.A.Z.); (V.A.G.); (V.V.K.); (G.I.E.); (E.L.D.); (N.V.P.); (N.E.P.); (T.A.V.); (P.G.); (A.V.P.); (S.I.K.); (E.K.G.)
| | - Vitaly V. Kadyshev
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (R.A.Z.); (V.A.G.); (V.V.K.); (G.I.E.); (E.L.D.); (N.V.P.); (N.E.P.); (T.A.V.); (P.G.); (A.V.P.); (S.I.K.); (E.K.G.)
| | - Galina I. El’chinova
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (R.A.Z.); (V.A.G.); (V.V.K.); (G.I.E.); (E.L.D.); (N.V.P.); (N.E.P.); (T.A.V.); (P.G.); (A.V.P.); (S.I.K.); (E.K.G.)
| | - Elena L. Dadali
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (R.A.Z.); (V.A.G.); (V.V.K.); (G.I.E.); (E.L.D.); (N.V.P.); (N.E.P.); (T.A.V.); (P.G.); (A.V.P.); (S.I.K.); (E.K.G.)
| | - Lyudmila K. Mikhailova
- N.N. Priorov Central Research Institute of Traumatology and Orthopedics, 117997 Moscow, Russia;
| | - Nika V. Petrova
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (R.A.Z.); (V.A.G.); (V.V.K.); (G.I.E.); (E.L.D.); (N.V.P.); (N.E.P.); (T.A.V.); (P.G.); (A.V.P.); (S.I.K.); (E.K.G.)
| | - Nina E. Petrina
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (R.A.Z.); (V.A.G.); (V.V.K.); (G.I.E.); (E.L.D.); (N.V.P.); (N.E.P.); (T.A.V.); (P.G.); (A.V.P.); (S.I.K.); (E.K.G.)
| | - Tatyana A. Vasilyeva
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (R.A.Z.); (V.A.G.); (V.V.K.); (G.I.E.); (E.L.D.); (N.V.P.); (N.E.P.); (T.A.V.); (P.G.); (A.V.P.); (S.I.K.); (E.K.G.)
| | - Polina Gundorova
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (R.A.Z.); (V.A.G.); (V.V.K.); (G.I.E.); (E.L.D.); (N.V.P.); (N.E.P.); (T.A.V.); (P.G.); (A.V.P.); (S.I.K.); (E.K.G.)
| | - Alexander V. Polyakov
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (R.A.Z.); (V.A.G.); (V.V.K.); (G.I.E.); (E.L.D.); (N.V.P.); (N.E.P.); (T.A.V.); (P.G.); (A.V.P.); (S.I.K.); (E.K.G.)
| | | | - Sergey I. Kutsev
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (R.A.Z.); (V.A.G.); (V.V.K.); (G.I.E.); (E.L.D.); (N.V.P.); (N.E.P.); (T.A.V.); (P.G.); (A.V.P.); (S.I.K.); (E.K.G.)
| | - Eugeny K. Ginter
- Research Centre for Medical Genetics, 115522 Moscow, Russia; (R.A.Z.); (V.A.G.); (V.V.K.); (G.I.E.); (E.L.D.); (N.V.P.); (N.E.P.); (T.A.V.); (P.G.); (A.V.P.); (S.I.K.); (E.K.G.)
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Shchagina OA, Milovidova TB, Murtazina AF, Rudenskaya GE, Nikitin SS, Dadali EL, Polyakov AV. HINT1 gene pathogenic variants: the most common cause of recessive hereditary motor and sensory neuropathies in Russian patients. Mol Biol Rep 2019; 47:1331-1337. [PMID: 31848916 DOI: 10.1007/s11033-019-05238-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 12/11/2019] [Indexed: 11/26/2022]
Abstract
Pathogenic variants in the HINT1 gene lead to hereditary axonopathy with neuromyotonia. However, many studies show that neuromyotonia may remain undiagnosed, while axonopathy is the major clinical finding. The most common cause of neuromyotonia and axonopathy, especially in patients of Slavic origin, is a c.110G>C (p.Arg37Pro) pathogenic variant in homozygous or compound heterozygous state. In this study, we analyzed a peripheral neuropathy caused by pathogenic variants in the HINT1 gene and evaluated its contribution to the hereditary neuropathy structure. The studied group included 1596 non-related families diagnosed with hereditary motor and sensory neuropathy (HMSN). The results show that HINT1 gene pathogenic variants make a significant contribution to the hereditary neuropathy epidemiology in Russian patients. They account for at least 1.9% of all HMSN cases and 9% of axonopathy cases. The most common HINT1 pathogenic variant in Russian patients is the c.110G>C (p.Arg37Pro) substitution. Its allelic frequency is 0.2% (95% CI 0.19-0.21%), carrier frequency is 1 in 250 people in Russian Federation, and the estimated disease incidence is 1 in 234,000 individuals. It was determined that the cause of this pathogenic variant's prevalence is the founder effect.
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Affiliation(s)
- O A Shchagina
- Laboratory of DNA Diagnostics, Laboratory of Molecular Genetic Diagnosis №1 of Research Centre for Medical Genetics, 1 Moskvorechie St., Moscow, Russia, 115522
| | - T B Milovidova
- Laboratory of DNA Diagnostics of Research Centre for Medical Genetics, 1 Moskvorechie St, Moscow, Russia, 115522
| | - A F Murtazina
- Research Centre for Medical Genetics, 1 Moskvorechie St., Moscow, Russia, 115522.
| | - G E Rudenskaya
- Scientific and Medical Department of Research Centre for Medical Genetics, 1 Moskvorechie St., Moscow, Russia, 115522
| | - S S Nikitin
- Association of Neuromuscular Disorders Specialists, Build. 2, 17 Krzhizhanovskogo St., Moscow, Russia, 117258
| | - E L Dadali
- Scientific and Medical Department of Research Centre for Medical Genetics, 1 Moskvorechie St., Moscow, Russia, 115522
| | - A V Polyakov
- Laboratory of DNA Diagnostics of Research Centre for Medical Genetics, 1 Moskvorechie St, Moscow, Russia, 115522
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13
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Rudenskaya GE, Marakhonov AV, Shchagina OA, Lozier ER, Dadali EL, Akimova IA, Petrova NV, Konovalov FA. Ataxia with Oculomotor Apraxia Type 4 with PNKP Common "Portuguese" and Novel Mutations in Two Belarusian Families. J Pediatr Genet 2019; 8:58-62. [PMID: 31061747 DOI: 10.1055/s-0039-1684008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Accepted: 02/21/2019] [Indexed: 10/27/2022]
Abstract
Ataxia with oculomotor apraxia type 4 (AOA4) is a rare autosomal recessive, PNKP -related disorder delineated in 2015 in Portugal. We diagnosed AOA4 by next generation sequencing (NGS) followed by Sanger's sequencing in three boys from two unrelated Belarusian families. In both families, one of the heterozygous PNKP mutations was c.1123G>T, common in Portuguese patients; biallelic mutations, c.1270_1283dup14 and c.1029+2T>C, respectively, were novel. These are the first reported AOA4 Slavic cases and the first with a "Portuguese" PNKP mutation outside Portugal. Distinction in two brothers was microcephaly but their disease was not severe in contrast to PNKP -related "microcephaly, seizures, and developmental delay" and reported cases with features of both phenotypes.
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Affiliation(s)
- Galina E Rudenskaya
- Department of Genetic Counseling, Research Centre for Medical Genetics, Moscow, Russian Federation
| | - Andrey V Marakhonov
- Department of Genetic Counseling, Research Centre for Medical Genetics, Moscow, Russian Federation
| | - Olga A Shchagina
- Department of Genetic Counseling, Research Centre for Medical Genetics, Moscow, Russian Federation
| | - Ekaterina R Lozier
- Independent Clinical Bioinformatics Laboratory, Moscow, Russian Federation
| | - Elena L Dadali
- Department of Genetic Counseling, Research Centre for Medical Genetics, Moscow, Russian Federation
| | - Irina A Akimova
- Department of Genetic Counseling, Research Centre for Medical Genetics, Moscow, Russian Federation
| | - Nika V Petrova
- Department of Genetic Counseling, Research Centre for Medical Genetics, Moscow, Russian Federation
| | - Fedor A Konovalov
- Independent Clinical Bioinformatics Laboratory, Moscow, Russian Federation
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Marakhonov AV, Tabakov VY, Zernov NV, Dadali EL, Sharkova IV, Skoblov MY. Two novel COL6A3 mutations disrupt extracellular matrix formation and lead to myopathy from Ullrich congenital muscular dystrophy and Bethlem myopathy spectrum. Gene 2018; 672:165-171. [DOI: 10.1016/j.gene.2018.06.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 04/21/2018] [Accepted: 06/08/2018] [Indexed: 01/15/2023]
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Zinchenko RA, Kadyshev VV, El’chinova GI, Marakhonov AV, Galkina VA, Dadali EL, Khlebnikova OV, Mikhailova LK, Petrova NV, Petrina NE, Vasilyeva TA, Gundorova P, Tanas AS, Strelnikov VV, Polyakov AV, Ginter EK. Study of the genetic load and diversity of hereditary diseases in the Russian population of the Karachay-Cherkess Republic. Int J Mol Epidemiol Genet 2018; 9:34-42. [PMID: 30245780 PMCID: PMC6146169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 08/12/2018] [Indexed: 06/08/2023]
Abstract
The genetic load and diversity of monogenic hereditary diseases (HD) in the Russian population of Karachay-Cherkess Republic (KCHR), living in 10 administrative and municipal divisions, were studied. The total size of the population surveyed was 410,367 people, including 134,756 Russians. In total, 385 patients from 281 families were registered among Russians of KCHR. Genetic load of AD, AR, and X-linked diseases (3.01 ± 0.32, 1.98 ± 0.26, and 1.23 ± 0.29, respectively) are more than twice higher in cities and municipal centers than in corresponding rural regions (1.00 ± 0.10, 0.89 ± 0.09, and 0.42 ± 0.09, respectively). The diversity of HD was 96 nosological forms: 56 diseases with AD type of inheritance (193 patients from 126 families), 28 clinical forms with AR (152 patients out of 124 families) and 12 diseases with the X-linked type of inheritance (40 affected from 31 families). A comparative analysis of the diversity of AD and AR HD with the previously studied populations and ethnic groups of the European part of Russia (Russians of 7 regions, 5 peoples of the Volga-Ural region, and 5 populations of the North Caucasus) was conducted, showing that Russians in the KCHR preserved genetic load with other Russian populations and its difference from the same mutation pool of Karachays and Circassians.
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Affiliation(s)
- Rena A Zinchenko
- Research Centre for Medical GeneticsMoscow 115522, Russian
- Pirogov Russian National Research Medical UniversityMoscow 117997, Russian
| | | | | | | | | | - Elena L Dadali
- Research Centre for Medical GeneticsMoscow 115522, Russian
- Pirogov Russian National Research Medical UniversityMoscow 117997, Russian
| | | | - Lyudmila K Mikhailova
- Central Research Institute of Traumatology and Orthopedics by N.N. PriorovaMoscow 127299, Russian
| | - Nika V Petrova
- Research Centre for Medical GeneticsMoscow 115522, Russian
| | - Nina E Petrina
- Research Centre for Medical GeneticsMoscow 115522, Russian
| | | | | | - Alexander S Tanas
- Research Centre for Medical GeneticsMoscow 115522, Russian
- Pirogov Russian National Research Medical UniversityMoscow 117997, Russian
| | - Vladimir V Strelnikov
- Research Centre for Medical GeneticsMoscow 115522, Russian
- Pirogov Russian National Research Medical UniversityMoscow 117997, Russian
| | | | - Eugeny K Ginter
- Research Centre for Medical GeneticsMoscow 115522, Russian
- Russian Medical Academy of Postgraduate EducationMoscow 125993, Russian
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Anisimova IV, Dadali EL, Konovalov FA, Akimova IA. [New allelic variants of non-syndromic mental retardation of type 20 caused by mutations in the MEF2C gene]. Zh Nevrol Psikhiatr Im S S Korsakova 2018; 118:70-75. [PMID: 29863696 DOI: 10.17116/jnevro20181184170-75] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
AIM To determine clinical and genetic characteristics of patients with non-syndromic mental retardation (NMR), type 20 with autosomal dominant type of inheritance (OMIM: 613443). MATERIAL AND METHODS Fourteen patients were studied including four patients with mutations in the MEF2C gene revealed by exome sequencing. Three of the four mutations in the gene were found for the first time. RESULTS Based on a comparative analysis of the clinical manifestations of 4 observed patients and 9 patients with type 20 NMR described in the literature, the authors determined common clinical characteristics of this syndrome. In most cases with delayed psycho-speech development and convulsive syndrome, the patients were expected to have various variants of early epileptic encephalopathies, in which presence of convulsive paroxysms leads to intellectual deficit, while in the case of NMR, the delay in development can be noted long before the onset of seizures. CONCLUSION Exome sequencing is the most effective method of NMR diagnosis.
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Affiliation(s)
- I V Anisimova
- Research Centre for Medical Genetics, Moscow, Russia
| | - E L Dadali
- Research Centre for Medical Genetics, Moscow, Russia
| | - F A Konovalov
- Research Centre for Medical Genetics, Moscow, Russia
| | - I A Akimova
- Research Centre for Medical Genetics, Moscow, Russia
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Marakhonov AV, Konovalov FA, Makaov AK, Vasilyeva TA, Kadyshev VV, Galkina VA, Dadali EL, Kutsev SI, Zinchenko RA. Primary microcephaly case from the Karachay-Cherkess Republic poses an additional support for microcephaly and Seckel syndrome spectrum disorders. BMC Med Genomics 2018; 11:8. [PMID: 29504900 PMCID: PMC5836840 DOI: 10.1186/s12920-018-0326-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Background Primary microcephaly represents an example of clinically and genetically heterogeneous condition. Here we describe a case of primary microcephaly from the Karachay-Cherkess Republic, which was initially diagnosed with Seckel syndrome. Case presentation Clinical exome sequencing of the proband revealed a novel homozygous single nucleotide deletion in ASPM gene, c.1386delC, resulting in preterm termination codon. Population screening reveals allele frequency to be less than 0.005. Mutations in this gene were not previously associated with Seckel syndrome. Conclusions Our case represents an additional support for the clinical continuum between Seckel Syndrome and primary microcephaly.
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Affiliation(s)
- Andrey V Marakhonov
- Research Centre for Medical Genetics, Moscow, Russia. .,Moscow Institute of Physics and Technology, Dolgoprudny, Russia. .,Laboratory of Genetic Epidemiology, Research Centre for Medical Genetics, Moskvorechie St., 1, Moscow, Russian Federation, 115478.
| | | | | | | | | | | | | | - Sergey I Kutsev
- Research Centre for Medical Genetics, Moscow, Russia.,Pirogov Russian National Research Medical University, Moscow, Russia.,Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - Rena A Zinchenko
- Research Centre for Medical Genetics, Moscow, Russia.,Pirogov Russian National Research Medical University, Moscow, Russia.,Moscow State University of Medicine and Dentistry, Moscow, Russia
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Dadali EL, Sharkova IV, Zernov NV, Rudenskaya GE, Skoblov MY. [Clinical and genetic characteristics of facioscapulohumeral muscular dystrophy Landuzi-Dezherina type 1]. Zh Nevrol Psikhiatr Im S S Korsakova 2017; 117:122-128. [PMID: 29265097 DOI: 10.17116/jnevro2017117111122-128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
AIM To describe clinical and genetic characteristics of patients from the Russian population with a variety of phenotypic variants of facioscapulohumeral muscular dystrophy Landuzi-Dezherina type 1 (FSHD 1). MATERIAL AND METHODS The material for the study were blood samples of 16 patients from 15 unrelated families residing in the territory of the Russian Federation, between the ages of 6 to 66 years, with symptoms of FSHD. Diagnosis was based on genealogical data analysis, neurological examination, electroneuromyographic study, indicators of activity of creatine phosphokinase (CPK) in the blood serum and molecular genetic analysis of the results, aimed at the analysis of macrosatellite D4Z4 repeats on chromosome 4. RESULTS AND CONCLUSION The study established the diagnosis of FSHD1 in 75% of patients. The correlation of the severity and phenotypic spectrum of FSHD1 with the age of onset was found. There was the significant clinical heterogeneity even among the 1st degree relatives in the same family. The correlation between macrosatellite D4Z4 repeats and clinical features of FSHD1 described previously in the literature was not observed.
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Affiliation(s)
- E L Dadali
- Research Centre for Medical Genetics, Moscow, Russia
| | - I V Sharkova
- Research Centre for Medical Genetics, Moscow, Russia
| | - N V Zernov
- Research Centre for Medical Genetics, Moscow, Russia
| | | | - M Yu Skoblov
- Research Centre for Medical Genetics, Moscow, Russia
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19
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Sharkov AA, Sharkova IV, Belousova ED, Dadali EL. [Genetics and treatment of early infantile epileptic encephalopathies]. Zh Nevrol Psikhiatr Im S S Korsakova 2016; 116:67-73. [PMID: 28005050 DOI: 10.17116/jnevro20161169267-73] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Epileptic encephalopathies (EE) are the group of progressive conditions with various etiologies that can produce neurocognitive deficit both per se and due to constant epileptiform discharges. Epileptic encephalopathies constitute about 15% of epilepsy in childhood and 40% of all seizures occurring in the first 3 years of life. Ten syndrome forms of EE are identified. Genetic factors contribute to 70-80% of all epileptic diseases and approximately 40% of idiopathic epilepsies have a monogenic mode of inheritance. Thirty-five genes of EE have been identified and the search is still continuing. The marked genetic heterogeneity of early EE, including 16 with autosomal-dominant-, 13 with autosomal-recessive-, 4 with X-linked recessive- and 2 with X-linked autosomal inheritance, was shown. The article describes differentiated approaches to the treatment of certain EE syndromes. Recent publications record the effectiveness of targeted therapy for certain forms of monogenic early EE (stiripentol in SCN1A mutations, diphenine in SCN8A mutations, levetiracetam in STXBP1 mutations). These results indicate the necessity for accurate diagnosis of genetic variants in early infantile EE for preventive actions in burdened families and for increasing the effectiveness of treatment.
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Affiliation(s)
- A A Sharkov
- Veltischev Research and Clincal Institute of Pediatrics in Pirogov Russian National Research Medical University, Moscow, Russia
| | - I V Sharkova
- Research Centre of Medical Genetics, Moscow, Russia
| | - E D Belousova
- Veltischev Research and Clincal Institute of Pediatrics in Pirogov Russian National Research Medical University, Moscow, Russia
| | - E L Dadali
- Research Centre of Medical Genetics, Moscow, Russia
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Dadali EL, Sharkova IV, Adyan TA, Milovidova TB, Polakov АV. [Clinical/genetic characteristics of patients with congenital muscular dystrophy caused by mutations in the LMNA gene]. Zh Nevrol Psikhiatr Im S S Korsakova 2016; 116:70-75. [PMID: 26977629 DOI: 10.17116/jnevro20161161170-75] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To study clinical/genetic characteristics of congenital muscular dystrophy caused by mutations in the LMNA gene in 5 patients from the Russian population. MATERIAL AND METHODS DNA samples of 42 probands, aged from 2 months to 9 years, with characteristic signs of congenital muscular dystrophy from nonrelated families were studied. The diagnosis was based on the results of genealogical analysis, neurological examination, serum creatine phosphokinase activity, results of electroneuromyography. RESULTS AND CONCLUSION In the Russian population, the frequency of congenital muscular dystrophy caused by mutations in the LMNA gene is not less than 12% of all cases of this group of diseases. The results indicate the presence of major mutation c.94_96delAAC in the LMNA gene. Specific phenotypic features of this form of congenital muscular dystrophy with symptoms of progressive flaccid paralysis with predominant lesions of axial muscles and plantar flexor muscles of the foot are described.
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Affiliation(s)
- E L Dadali
- Research centre for medical genetics, Moskow
| | | | - T A Adyan
- Research centre for medical genetics, Moskow
| | | | - А V Polakov
- Research centre for medical genetics, Moskow
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Ivanova EA, Dadali EL, Fedotov VP, Kurbatov SA, Rudenskaia GE, Proskokova TN, Poliakov AV. [The spectrum of CLCN1 gene mutations in patients with nondystrophic Thomsen's and Becker's myotonias]. Genetika 2012; 48:1113-1123. [PMID: 23113340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Thomsen's and Becker's diseases are the most prevalent nondystrophic myotonias. Their frequency varies, according to different sources, from 1 : 100 000 to 1 : 10 000. Thomsen's myotonia is autosomal dominant, and Becker's myotonia is autosomal recessive. Both diseases result from mutations of the CLCN1 gene encoding chloride ion channels of skeletal muscles. Molecular genetic analysis of the CLCN1 gene has been performed in patients with diagnoses of nondystrophic Thomsen's and Becker's myotonias living in the Russian Federation. A sample of 79 unrelated probands with nondystrophic Thomsen's and Becker's myotonias and 44 their relatives has been formed in the Laboratory of DNA Diagnosis of the Medical Genetic Research Center of the Russian Academy of Medical Sciences. Forty CLCN1 gene mutations have been found in a total of 118 chromosomes of 66 probands, including 21 familial and 45 sporadic cases. About half the mutations detected (45%) have been found for the first time; they are not described in the SNP database (ncbi.nlm.nih.gov). The following mutations (substitutions) have been detected in more than one chromosome, accounting for a total of 59.3% of chromosomes with mutations: Glyl90Ser (5.9%), c.1437-1450del14 (9.3%), Ala493Glu (5.1%), Thr550Met (3.4%), Tyr686Stop (5.1%), and Arg894Stop (30.5%).
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Zabnenkova VV, Dadali EL, Spiridonova MG, Zinchenko RA, Poliakov AV. [Heterozygous carrier rate for type I-IV proximal spinal muscular atrophy in Chuvashes, Udmurts, and residents of the Moscow region]. Genetika 2012; 48:983-992. [PMID: 23035550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The first estimation of the heterozygous carrier rates for the SMN1 gene deletions and SMN2 gene duplications in populations of Russia has been performed. The numbers of SMNgene copies have been determined in samples from Chuvash and Udmurt populations, as well the population of the Moscow region, by means of multiplex ligation-dependent probe amplification. The heterozygous carrier rates for the CMA gene were 2.7% (1 : 37 people), 2.8% (1 : 36 people), and 2.8% (1 : 36 people) in Chuvashes, Udmurts, and residents of the Moscow region, respectively. The SMN2 duplication frequencies have been determined in the studied groups. It is 1.5, 4, and 2.5% in Chuvashes, Udmurts, and residents of the Moscow region, respectively. The high SMN2 duplication frequency in Udmurts may explain why the SMN1 heterozygous carriage frequency in this population was overestimated in earlier PCR-RFLP analyses.
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Sharkova IV, Milovidova TB, Dadali EL, Poliakov AV. [Clinical-genetic characteristics of hereditary motor-sensory neuropathy type 1 X]. Zh Nevrol Psikhiatr Im S S Korsakova 2012; 112:42-7. [PMID: 23011429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Data of own researches and the review of the literary data for studying pathogenesis and features of HMSN, type 1 Х caused by mutations in gene GJB1 are presented in this paper. X-linked HMSN is the genetic variant second for frequency in Russian, it constitute 22% from total of patients of this group. Features of this genetic variant are considerable distinction in weight clinical displays at patients man's and female. It is shown that at the majority of female patients clinical displays are expressed less, and at 20% were absent at all. The assumption is come out that at indicators of CNV from 35 to 52 m/s, it is necessary to conduct research in gene GJB1 especially at patients of a female and as to carry out search of mutations at all relatives with HMSN, type 1 X even in the absence of complaints from their party.
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Ryzhkova OP, Sharkova IV, Dadali EL, Petrunina EL, Poliakov AV. [Clinical-genetic analysis of limb-girdle muscular dystrophy 2 type I]. Zh Nevrol Psikhiatr Im S S Korsakova 2012; 112:55-59. [PMID: 22983245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Seventy four patients with clinical presentation of LGMD and probably autosomal-recessive type of inheritance were examined. Five different mutations of FKRP gene responsible for LGMD2 type I were detected in eight (10.8%) patients. Two of them с.341C>G, c.826C>A were described before and three c.229C>T, с.265C>T, с.1078G>C were found for the first time. The significant clinical polymorphism due to the difference in age of manifestation and severity of clinical presentation was identified.
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Milovidova TB, Dadali EL, Fedotov VP, Shchagina OA, Poliakov AV. [Clinical-genetic correlations in the hereditary motor-sensor neuropathy caused by mutations in the MPZ (P0) gene]. Zh Nevrol Psikhiatr Im S S Korsakova 2011; 111:48-55. [PMID: 22433810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Hereditary motor-sensor neuropathy (HMSN) caused by mutations in the MPZ (P0) gene is a rare variant of hereditary demyelinating polyneuropathies that makes up 5-10% of all cases in different populations. Based on the complex examination of patients of the Russian Federation with different MPZ (P0) mutations, we obtained clinical-genetic, electromyographic and molecular-genetic characteristics of HMSN caused by mutations in the MPZ (P0) gene. Peculiarities of clinical presentations in patients with HMSN, types 1B and 2I, are presented. Diagnostic criteria of these genetic variants have been formed. The new allelic variants of HMSN caused by mutations in the MPZ (P0) gene are described. The distribution of mutations by protein domains has been analyzed.
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Dadali EL, Shagina OA, Ryzhkova OP, Rudenskaia GE, Fedotov VP, Poliakov AV. [Clinical-genetic characteristics of limb girdle-muscular dystrophy type 2A]. Zh Nevrol Psikhiatr Im S S Korsakova 2010; 110:79-83. [PMID: 20517216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We present the results of the molecular genetic study of 26 patients, aged from 12 to 60 years, from 24 unrelated families with limb girdle-muscular dystrophy (LGMD) type 2A. The disease duration varied from 6 months to 30 years. The diagnosis of LGMD 2capital A, Cyrillic was confirmed by molecular genetic methods basing on the presence of a CAPN3 mutation in homozygous, compound-heterozygous and heterozygous state. The Leyden-Moebius variant that is characterized by the primary affection of muscles of pelvic girdle and shin with the gradual progression of the pathological process in shoulder girdle muscles was the most frequent in the Russian population. Tip-toe walking or difficulties in walking upstairs and running were the first symptoms reported by patients. In contrast to criteria of the European Neuromuscular Center, the characteristic symptoms of the disease were early contractures of ankle joints and pseudohypertrophy of gastrocnemius muscles. The major c.550delA mutation in the CAPN3 gene was identified in 70% of Russian patients.
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Dadali EL, Rudenskaia GE, Shchagina OA, Tiburkova TB, Sukhorukov VS, Kharlamov DA, Poliakov AV. [Merosin-deficient congenital muscular dystrophy]. Zh Nevrol Psikhiatr Im S S Korsakova 2010; 110:83-89. [PMID: 20607928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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Tsygankova PG, Mikhaĭlova SV, Zakharova EI, Pichkur NA, Il'ina ES, Nikolaeva EA, Rudenskaia GE, Dadali EL, Kolpakchi LM, Fedoniuk ID, Matiushchenko GN. [Syndrome Leigh caused by mutations in the SURF1 gene: clinical and molecular-genetic characteristics]. Zh Nevrol Psikhiatr Im S S Korsakova 2010; 110:25-32. [PMID: 20436434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Syndrome Leigh (SL) or subacute necrotizing encephalomyelopathy - is a rare hereditary genetically heterogeneous disease from the group of mitochondrial encephalomyopathies. Twenty-seven children with SL were examined using clinical, laboratory (measuring lactate levels), MRI and molecular-genetic (polymerase chain reaction genotyping of 9 exons of the SURF1 gene) studies. The mean age of manifestation was 11,6 months. The main manifestations of SL were: delay of psychomotor development, diffuse muscle hypertonic, cerebellar syndrome, ophthalmoparesis, hypertrichosis. The disease had a progressive course with the loss of acquired skills. The blood lactate concentration was increased on average up to 3,1 mM/ml (from 1,9 to 5,1 mM/ml) compared to normal values (1,8 mM/ml). Brain MRI revealed the subcortical and cortical atrophy (80% of cases), symmetrical distinctly delineated hyperintense lesions on T2-weighted images (demyelization) in the basal ganglia and the brain stem (50%), as well as in the cerebellum (25%). Genotyping identified 7 different mutations. The most frequent (64,8%) was the deletion of 2 nucleotides (845delCT) in exon 8 that was in line with early data of Polish researchers thus indicating the Slavic origin of this mutation. Other mutations (574-575insCTGT, 311-321del10insAT and IVS8-1G>) were also frequent in the Russian population.
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Shagina OA, Dadali EL, Fedotov VP, Tiburkova TB, Poliakov AV. [Hereditary motor and sensory neuropathy type 4A]. Zh Nevrol Psikhiatr Im S S Korsakova 2010; 110:13-16. [PMID: 21322820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The first in the Russian Federation clinical cases of patients with autosomal-recessive type of hereditary motor and sensory neuropathy, type 4A, (HMSN 4A) are presented. In all cases, the diagnosis has been verified using molecular-genetic methods (DNA diagnostics). An analysis of features of clinical manifestations was performed in patients, aged from 5 to 34 years, with different disease duration (from 3-to 29 years). Criteria of selection of patients for DNA diagnostics for searching mutations in the GDAP1 gene are specified.
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Zinchenko RA, Murzabaeva SS, Grinberg II, Galkina VA, Khlebnikova OV, Dadali EL, Fedotov VP, Khidiiatova IM, Khusnutdinova EK, Ginter EK. [Genetic epidemiological study of Bashkortostan Republic: the diversity of monogenic hereditary diseases in five districts]. Genetika 2009; 45:677-690. [PMID: 19534428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The diversity of monogenic hereditary diseases (HDs) (autosomal dominant (AD), autosomal recessive (AR), and X-linked diseases) has been studied in five districts of Bashkortostan Republic: Burzyanskii, Abzelilovskii, Baimak, Salavatskii, and Arkhangel'skoe raions. The spectrum of HDs comprised 144 diseases, including 83, 48, and 13 Ad, AR, and X-linked diseases. Most of them were found earlier during studies in ten other regions of Russia (Kirov, Kostroma, Tver', Bryansk, and Rostov oblasts, and Krasnodar krai, and the republics of Adygea, Marii El, Udmurtia, and Chuvashia). Foci of local accumulation of some AD, AR, and X-linked diseases have been found in individual districts. Data on the gene frequencies for the HDs have been used for cluster analysis, which has shown the gene geographic position of Bashkirs among nine ethnic populations of Russia: Russians (Kostroma, Kirov, and Rostov oblasts and Krasnodar krai), Chuvashes (Chuvashia), Adygeans (Adygea), Maris (Marii El), Udmurts (Udmurtia), and Bashkirs (Bashkortostan).
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Murzabaeva SS, Zinchenko RA, Grinberg II, Galkina VA, Khlebnikova OV, Dadali EL, Fedotov VP, El'chinova GI, Terekhovskaia IG, Khidiiatova IM, Khusnutdinova EK, Ginter EK. [Genetic epidemiological study of Bashkortostan Republic: the effect of genetic structure of population on the load of monogenic hereditary diseases]. Genetika 2009; 45:546-554. [PMID: 19507708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Here we present the data obtained during medical genetic examination of the population of five districts of Bashkortostan Republic (Burzyanskii, Baimakskii, Abzelilovskii, Salavatskii, and Arkhangelskii) populated with 168050 persons including 135748 Bashkirs. The study involved all the population of the districts including each ethnic group and was conducted according to standard protocol developed in the Laboratory of Genetic Epidemiology, Medical Genetic Research Center, Russian Academy of Medical Sciences. Based on segregation analysis, the values of prevalence rates of the major types of Mendelian pathology (AD, AR, and X- linked diseases) was calculated in five regions of the Republic as well as for Bashkirs alone. Significant differences in the prevalence rates of AD and AR pathologies between individual districts, in particular upon division in rural and urban population, was observed. The prevalence rates comparison of monogenic hereditary pathology among Bashkirs compared to other previously examined populations have shown that the patterns of the hereditary disease load in the inspected districts of Bashkortostan were similar to that observed in the population of some districts in Udmurtia, Marii El and Chuvashiya. Russian European populations have shown significantly lower load of hereditary diseases. Correlation analysis of local inbreeding, endogamy and prevalence rates of AD and AR pathologies has shown that development of hereditary diseases load is significantly affected by gene drift.
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Rudenskaia GE, Tverskaia SM, Chukhrova AL, Zakliaz'minskaia EV, Kuropatkina IV, Dadali EL, Perminov VS, Poliakov AV. [Clinical, genealogical and molecular genetic study of Emery-Dreifuss muscular dystrophy]. Zh Nevrol Psikhiatr Im S S Korsakova 2006; 106:58-65. [PMID: 17117676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
A search for emerin and lamin A/C (LMNA) mutations was performed in a group of 63 unrelated patients with probable Emery-Dreifuss muscular dystrophy (EDMD) and other MD's with concomitant dilated cardiomyopathy (DCMP). Four different emerin mutations and 7 LMNA mutations were found in unrelated patients. One emerin mutation and 2 LMNA mutations, one of the latter being found twice, have been registered earlier; the rest of the mutations are novel. All the patients with emerin mutations and 3 patients with LMNA mutations represented single cases while 4 LMNA-related cases were familial. De novo origin was proved for one emerin and 3 LMNA mutations. Apart from EDMD phenotypes, varying also in age at onset and severity, 2 cases of limb girdle MD type 1B were diagnosed. One patient with LMNA mutation and severe DCMP had subclinical signs of skeletal myopathy only. There was an overlap between DCMP type 1A and MD's. Autosomal dominant EDMD seems to be more common than "classic" X-linked EDMD. We found neither emerin nor LMNA mutations in a subset of families with EDMD-like phenotypes that may imply an existence of other genes causing similar disorders. Taking into account clinical variability of MD's caused by emerin and LMNA mutations, DNA diagnosis should not confine to the "classic" phenotype. DNA diagnosis of EDMD is important boht for medical genetic counseling and for patients' management: timely diagnosis of the disease allows one to prevent fatal cardiologic complications.
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Kirilenko NB, Fedotov VP, Baryshnikova NV, Dadali EL, Poliakov AV. [Nozological spectrum of hereditary diseases of the nervous system in the cities of Volgograd and Volzhsky]. Genetika 2004; 40:1262-1267. [PMID: 15559155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A spectrum of hereditary diseases of the nervous system (HDNS) was studied in the cities of Volgograd and Volzhsky. The estimates were obtained for the prevalence of major HDNS groups and individual nosological forms. The populations examined differed in prevalence of this pathology and in contribution of individual diseases and their nosological forms into HDNS load formation. The effect of the population dynamics in Volgograd and Volzhsky on the HDNS prevalence is discussed.
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Kirilenko NB, Fedotov VP, Baryshnikova NV, Dadali EL, Poliakov AV, Zinchenko RA. [Genetic and epidemiologic analysis of hereditary diseases of the nervous system in the cities of Volgograd and Volzhskiĭ]. Genetika 2004; 40:1256-1261. [PMID: 15559154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A genetic epidemiological study of hereditary diseases of the nervous system (HDNS) was conducted in the cities of Volgograd and Volzhsky for the first time. In total, 1 323 500 individuals were examined including the populations of Volgograd and Volzhsky (1 012 800 and 310 700 persons, respectively). The prevalence of neurological diseases with autosomal dominant (AD), autosomal recessive (AR), and X-linked recessive inheritance was estimated. These data were compared with the estimates previously obtained for different population of the Russian Federation. A decrease was found in general HDNS load in Volgograd and Volzhsky. The compared populations were shown to differ in a contribution of AD, AR, and X-linked recessive diseases into the HDNS load formation. The possible effect of population dynamics factors on the HDNS load structure is discussed.
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Züchner S, Mersiyanova IV, Muglia M, Bissar-Tadmouri N, Rochelle J, Dadali EL, Zappia M, Nelis E, Patitucci A, Senderek J, Parman Y, Evgrafov O, Jonghe PD, Takahashi Y, Tsuji S, Pericak-Vance MA, Quattrone A, Battaloglu E, Polyakov AV, Timmerman V, Schröder JM, Vance JM, Battologlu E. Mutations in the mitochondrial GTPase mitofusin 2 cause Charcot-Marie-Tooth neuropathy type 2A. Nat Genet 2004; 36:449-51. [PMID: 15064763 DOI: 10.1038/ng1341] [Citation(s) in RCA: 1143] [Impact Index Per Article: 57.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2003] [Accepted: 03/04/2004] [Indexed: 01/30/2023]
Affiliation(s)
- Stephan Züchner
- Department of Neuropathology, University Hospital, RWTH Aachen, Pauwelsstrasse 30, 52074 Aachen, Germany
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Rudenskaia GE, Shekhter OV, Zakharova EI, Dadali EL, Solokha OA, Lomonosova EZ, Goncharov VM, Karmanov ME. [Clinical heterogeneity of X-linked adrenoleukodystrophy ]. Zh Nevrol Psikhiatr Im S S Korsakova 2003; 102:20-4. [PMID: 12497991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
X-linked adrenoleukodystrophy (X-ALD) is a relatively common world spread disease characterized by significant clinical heterogeneity. Clinico-biochemical examination in the Medico-genetic research center identified, 20 X-ALD cases in 17 families over 5 years. Prevalence of children (60%) and adolescence (25%) cerebral forms is explained, in part, by patients referring for medical-genetic counseling. Adrenomyeloneuropathy was diagnosed in one patient. In two healthy siblings presymptomatic stage was found. A main X-ALD biochemical marker is an increase of very long chain fatty acids (VLCFA) level, which does not depend on clinical form of the disease. Most interesting appeared to be a family including 5 patients in 3 generations with intrafamilial combination of childhood and adolescence cerebral forms, and atypically mild disease course in proband. Regarding symptoms of childhood and adolescence cerebral forms, attention has been drawn to 3 patients with tics, which mask organic nature of the disease on its initial stage. X-ALD is so far incurable, but its timely diagnosis provides an adequate medico-genetic help on the base of modern prenatal diagnosis.
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Baryshnikova NV, Dadali EL, Okuneva EG, Sitnikov VF, El'chinova GI, Rudenskaia GE. [Hereditary diseases of nervous system in the population of Vladimir province]. Genetika 2002; 38:400-406. [PMID: 11963569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The first population genetic study of hereditary disorders of the nervous system (HDNS) in Vladimir oblast was carried out. A total of 1,622,900 subjects, including 1,306,200 from the urban and 316,700 from the rural population, were tested. The population examined was characterized by virtually homogenous ethnic structure, with Russians constituting 95.76%. Pooled prevalence of HDNS in Vladimir oblast corresponded to the average prevalence for other Russian populations. Substantial differences between urban and rural populations in respect of the population load of HDNS and its nosological structure were not observed. A total of 22 nosological forms of HDNS were revealed, including thirteen autosomal dominant (193 families with 272 affected individuals), seven autosomal recessive (59 families with 66 affected individuals), and two X-linked (15 families with 17 affected individuals) diseases. The composition of the HDNS spectrum "nucleus" in Vladimir oblast displayed a number of differences from that in the majority of other populations examined. The HDNS in different regions of the area tested were characterized by different prevalence and spectrum. The data obtained may constitute a basis for regional registration of HDNS in Vladimir oblast.
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Rubenskaia GE, Shagina IA, Vasserman NN, Mersiianova IA, Dadali EL, Poliakov AV. [Sensorimotor neuropathy with X-linked dominant inheritance]. Zh Nevrol Psikhiatr Im S S Korsakova 2002; 101:8-13. [PMID: 11712276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Familial sensomotor neuropathy (FSMNX1) is reported to contribute significantly to FSMN spectrum. FSMNX1 is referred to FSMN type I but in respect to several signs is regarded as an intermediate one between type I and type II. A family including 26 patients in 5 generations has been described, 14 patients being examined in the study. Molecular genetic investigation showed that the disease was determined by mutation in connecsin gene 32 (Cx32). The mutation described is represented by a single nucleotide substitution 68T > C in codon 23 (GTA > GCA). A large proportion of presubclinical cases, preferentially in women, have been found in the family, that is in line with a type of inheritance. Substantial interfamilial disease polymorphism, especially by an age of onset, and symptoms rare for FSMN have been showed as well. Literature data on clinical genealogical, electrophysiological and molecular-genetic characteristics of FSMNX1 are analyzed comparing with own observations. Practical aspects of FSMNX1 diagnosis using DNA are discussed.
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Ismailov SM, Fedotov VP, Dadali EL, Polyakov AV, Van Broeckhoven C, Ivanov VI, De Jonghe P, Timmerman V, Evgrafov OV. A new locus for autosomal dominant Charcot-Marie-Tooth disease type 2 (CMT2F) maps to chromosome 7q11-q21. Eur J Hum Genet 2001; 9:646-50. [PMID: 11528513 DOI: 10.1038/sj.ejhg.5200686] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2001] [Revised: 05/03/2001] [Accepted: 05/09/2001] [Indexed: 01/27/2023] Open
Abstract
Charcot-Marie-Tooth disease (CMT) constitutes a genetically heterogeneous group of inherited motor and sensory peripheral neuropathies. The axonal type of CMT is designated CMT type 2 (CMT2). Four loci for autosomal dominant CMT2 have been reported so far. Only in CMT2E, linked to chromosome 8p21, disease-causing mutations in the gene for neurofilament light chain (NEFL) were identified. In this study we report a multigenerational Russian family with autosomal dominant CMT2 and assign the locus to chromosome 7q11-q21. The CMT2 neuropathy in this family represents a novel genetic entity designated CMT2F.
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Affiliation(s)
- S M Ismailov
- Russian State Medical University, Moscow, Russia
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Mersiyanova IV, Perepelov AV, Polyakov AV, Sitnikov VF, Dadali EL, Oparin RB, Petrin AN, Evgrafov OV. A new variant of Charcot-Marie-Tooth disease type 2 is probably the result of a mutation in the neurofilament-light gene. Am J Hum Genet 2000; 67:37-46. [PMID: 10841809 PMCID: PMC1287099 DOI: 10.1086/302962] [Citation(s) in RCA: 285] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2000] [Accepted: 04/26/2000] [Indexed: 01/30/2023] Open
Abstract
Charcot-Marie-Tooth (CMT) disease is the most common inherited motor and sensory neuropathy. The axonal form of the disease is designated as "CMT type 2" (CMT2). Although four loci known to be implicated in autosomal dominant CMT2 have been mapped thus far (on 1p35-p36, 3q13. 1, 3q13-q22, and 7p14), no one causative gene is yet known. A large Russian family with CMT2 was found in the Mordovian Republic (Russia). Affected members had the typical CMT2 phenotype. Additionally, several patients suffered from hyperkeratosis, although the association, if any, between the two disorders is not clear. Linkage with the CMT loci already known (CMT1A, CMT1B, CMT2A, CMT2B, CMT2D, and a number of other CMT-related loci) was excluded. Genomewide screening pinpointed the disease locus in this family to chromosome 8p21, within a 16-cM interval between markers D8S136 and D8S1769. A maximum two-point LOD score of 5.93 was yielded by a microsatellite from the 5' region of the neurofilament-light gene (NF-L). Neurofilament proteins play an important role in axonal structure and are implicated in several neuronal disorders. Screening of affected family members for mutations in the NF-L gene and in the tightly linked neurofilament-medium gene (NF-M) revealed the only DNA alteration linked with the disease: a A998C transversion in the first exon of NF-L, which converts a conserved Gln333 amino acid to proline. This alteration was not found in 180 normal chromosomes. Twenty unrelated CMT2 patients, as well as 26 others with an undetermined form of CMT, also were screened for mutations in NF-L, but no additional mutations were found. It is suggested that Gln333Pro represents a rare disease-causing mutation, which results in the CMT2 phenotype.
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Mersiyanova IV, Ismailov SM, Polyakov AV, Dadali EL, Fedotov VP, Nelis E, Löfgren A, Timmerman V, Van Broeckhoven C, Evgrafov OV. Screening for mutations in the peripheral myelin genes PMP22, MPZ and Cx32 (GJB1) in Russian Charcot-Marie-Tooth neuropathy patients. Hum Mutat 2000. [DOI: 10.1002/(sici)1098-1004(200004)15:4<340::aid-humu6>3.3.co;2-p] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Mersiyanova IV, Ismailov SM, Polyakov AV, Dadali EL, Fedotov VP, Nelis E, Löfgren A, Timmerman V, van Broeckhoven C, Evgrafov OV. Screening for mutations in the peripheral myelin genes PMP22, MPZ and Cx32 (GJB1) in Russian Charcot-Marie-Tooth neuropathy patients. Hum Mutat 2000; 15:340-7. [PMID: 10737979 DOI: 10.1002/(sici)1098-1004(200004)15:4<340::aid-humu6>3.0.co;2-y] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Charcot-Marie-Tooth disease (CMT) and related inherited peripheral neuropathies, including Dejerine-Sottas syndrome, congenital hypomyelination, and hereditary neuropathy with liability to pressure palsies (HNPP), are caused by mutations in three myelin genes: PMP22, MPZ and Cx32 (GJB1). The most common mutations are the 1.5 Mb CMT1A tandem duplication on chromosome 17p11.2-p12 in CMT1 patients and the reciprocal 1.5 Mb deletion in HNPP patients. We performed a mutation screening in 174 unrelated CMT patients and three HNPP families of Russian origin. The unrelated CMT patients included 108 clinically and electrophysiologically diagnosed CMT1 cases, 32 CMT2 cases, and 34 cases with unspecified CMT. Fifty-nine CMT1A duplications were found, of which 58 belonged to the CMT1 patient group. We found twelve distinct mutations in Cx32, six mutations in MPZ, and two mutations in PMP22. Of these respectively, eight, five, and two lead to a CMT1 phenotype. Eight mutations (Cx32: Ile20Asn/Gly21Ser, Met34Lys, Leu90Val, and Phe193Leu; MPZ: Asp134Gly, Lys138Asn, and Thr139Asn; PMP22: ValSer25-26del) were not reported previously. Phenotype-genotype correlations were based on nerve conduction velocity studies and mutation type.
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Affiliation(s)
- I V Mersiyanova
- Laboratory of DNA Diagnostics, Research Centre for Medical Genetics, Moscow, Russia
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Dadali EL, Markova ED, Petrin AN, Ivanova-Smolenskaia IA, Okuneva EG. [Genetic study of idiopathic torsion dystonia in Russia]. Genetika 1996; 32:415-419. [PMID: 8723633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Inheritance of idiopathic torsion dystonia (ITD) was studied in 41 Russian families including 41 probands with generalized, focal, and segmental dystonia and 140 recurred cases. Affected relatives appeared in two or more generations in 31 families analyzed. It was shown that in 76% of segregated cases, ITD was inherited as an autosomal dominant trait with a penetrance of 40% and varying expression. An autosomal recessive type was observed in 24% of the cases. Approximately 10% of the cases of disease could be caused by a new mutation and 14.6% by a nongenetic phenotype similar to genetic forms in its clinical symptoms. ITD with the X-linked recessive type of inheritance did not occur in the families studied. The recurrence risk was 20% in autosomal dominant forms. The risk correlated with age the relative's: clinical symptoms developed in 98.4% of patients by the age of 30.
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Chukhrova AL, Malygina NA, Poliakov AV, Zaĭtseva SP, Sitnikov VF, Dadali EL, Kamennykh LN, Khrennikov VI, Badalian LO, Evgrafov OV. [Screening for deletion in patients with Duchenne's myodystrophy by multiplex amplification]. Tsitol Genet 1994; 28:80-3. [PMID: 7801388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Patients with Duchenne muscular dystrophy were analyzed using the method of polymerase chain reaction in order to reveal deletions in the dystrophin gene. Deletions of different lengths and locations were detected in 28 of 78 ill boys. The highest number of deletions was detected in the 3'-end of the gene (the 45-50th exons).
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Dadali EL. [Grieg's cephalopolysyndactylia syndrome in one family]. Klin Med (Mosk) 1987; 65:129-31. [PMID: 3041101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Zaletaev DV, Dadali EL, Kuleshov NP. [Del(1)(q22-q25) syndrome. Cytogenetics and phenotype]. Tsitol Genet 1987; 21:213-6. [PMID: 3617217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A male infant is described with dysmorphology of the head and face, neck, extremities and genitalia, as well as growth and mental retardation and with the de novo interstitial deletion of the proximal segment of the long arm of chromosome 1-del (1) (q22-q25). Comparison of the phenotypic characteristics of this patient with those of previously described patients with similar deletion confirms the existence of the proximal 1q deletion syndrome.
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Zaletaev DV, Dadali EL. [Syndrome of partial monosomy of the long arm of chromosome 16]. Pediatriia 1986:50-2. [PMID: 3822708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Dadali EL. [Role of catecholamine excretion study in predicting the effectiveness of treating tic-like hyperkinesis in children]. Pediatriia 1980:48-50. [PMID: 7432914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Badalian LO, Skvortsov IA, Kamennykh LN, Dadali EL, Temin PA. [Generalized paroxysmal tic (Tourette's syndrome)]. Klin Med (Mosk) 1979; 57:28-34. [PMID: 290841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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