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Rudenskaya GE, Petukhova MS, Zabnenkova VV, Cherevatova TB, Ryzhkova OP. [Early-onset familial Alzheimer's disease with spastic paraparesis associated with PSEN1 gene]. Zh Nevrol Psikhiatr Im S S Korsakova 2023; 123:120-127. [PMID: 37994898 DOI: 10.17116/jnevro2023123111120] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2023]
Abstract
A familial case of a rare autosomal dominant Alzheimer's disease (AD), related to PSEN1 gene (AD3, OMIM 607822), differing from common multifactorial form by earlier onset and, in part of cases, by accompanying neurological signs, spastic paraparesis particularly, is presented. The first sign in a female proband and in her son was paraparesis manifested at the age of 29 and 21 years, respectively. Cognitive disturbances developed soon; the former diagnosis was hereditary spastic paraplegia with cognitive impairment, In the proband examined in 2008 at 33 years old the diagnosis was not established. In the son examined in 2022 at 27 years old whole-exome sequencing detected a novel PSEN1 missense mutation p.Thr421Ala. The mutation was confirmed by Sanger sequencing in him, found out in the proband (who was severely disabled by that time) and excluded in her unaffected mother. Except for different age of onset, AD3 in two patients was similar, though in whole it is variable, also in relatives. The variability and rareness of the disease hampers clinical diagnostics. Massive parallel sequencing is a most reliable diagnostic method.
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Affiliation(s)
| | - M S Petukhova
- Research Centre for Medical Genetics, Moscow, Russia
| | | | | | - O P Ryzhkova
- Research Centre for Medical Genetics, Moscow, Russia
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Tsukanov AS, Zabnenkova VV, Shubin VP, Pikunov DY, Savelyeva TA, Kuzminov AM, Frolov SA, Polyakov AV, Shelygin YA. Identification of large deletions in the APC gene in Russian patients with familial adenomatous polyposis. Neoplasma 2020; 67:1343-1348. [PMID: 32701358 DOI: 10.4149/neo_2020_191230n1351] [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] [Received: 12/30/2019] [Accepted: 04/20/2020] [Indexed: 11/08/2022]
Abstract
Familial adenomatous polyposis (FAP) is a hereditary syndrome characterized by the presence of multiple adenomatous polyps in the colon. The main cause of the disease is a germline mutation in the APC gene. Here we report 4 unrelated FAP patients with different large deletions in the APC gene detected by Multiplex Ligation-dependent Probe Amplification (MLPA) method: deletion of exons 7-15, deletion of promoters B, A, and 5'-UTR region and deletion of promoter B (in 2 patients). The deletion of promoters B, A, and 5'-UTR was not described in the literature earlier, so we report it for the first time. In 2 families with promoter B deletion, we could identify the tendency for decreasing the age of disease manifestation in each next generation, in contrast to the previous one. The incidence of large deletions in APC among Russian patients with FAP reached 4.8% and our finding suggests the need to study this gene by MLPA in "no mutation patients" after Sanger's sequencing.
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Affiliation(s)
- A S Tsukanov
- National Medical Research Center for Coloproctology, Moscow, Russia
| | | | - V P Shubin
- National Medical Research Center for Coloproctology, Moscow, Russia
| | - D Y Pikunov
- National Medical Research Center for Coloproctology, Moscow, Russia
| | - T A Savelyeva
- National Medical Research Center for Coloproctology, Moscow, Russia
| | - A M Kuzminov
- National Medical Research Center for Coloproctology, Moscow, Russia
| | - S A Frolov
- National Medical Research Center for Coloproctology, Moscow, Russia
| | - A V Polyakov
- Research Center for Medical Genetics, Moscow, Russia
| | - Y A Shelygin
- National Medical Research Center for Coloproctology, Moscow, Russia
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Tsygankova PG, Itkis YS, Krylova TD, Kurkina MV, Bychkov IO, Ilyushkina AA, Zabnenkova VV, Mikhaylova SV, Pechatnikova NL, Sheremet NL, Zakharova EY. Plasma FGF-21 and GDF-15 are elevated in different inherited metabolic diseases and are not diagnostic for mitochondrial disorders. J Inherit Metab Dis 2019; 42:918-933. [PMID: 31260105 DOI: 10.1002/jimd.12142] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 06/24/2019] [Accepted: 06/26/2019] [Indexed: 12/27/2022]
Abstract
Recently, the plasma cytokines FGF-21 and GDF-15 were described as cellular metabolic regulators. They share an endocrine function and are highly expressed in the liver under stress and during starvation. Several studies found that these markers have high sensitivity and specificity for the diagnosis of mitochondrial diseases, especially those with prominent muscular involvement. In our study, we aimed to determine whether these markers could help distinguish mitochondrial diseases from other groups of inherited diseases. We measured plasma FGF-21 and GDF-15 concentrations in 122 patients with genetically confirmed primary mitochondrial disease and 127 patients with non-mitochondrial inherited diseases. Although GDF-15 showed better analytical characteristics (sensitivity = 0.66, specificity = 0.64, area under the curve [AUC] = 0.88) compared to FGF-21 (sensitivity = 0.51, specificity = 0.76, AUC = 0.78) in the pediatric group of mitochondrial diseases, both markers were also elevated in a variety of non-mitochondrial diseases, especially those with liver involvement (Gaucher disease, galactosemia, glycogenosis types 1a, 1b, 9), organic acidurias and some leukodystrophies. Thus, the overall positive and negative predictive values were not acceptable for these measurements to be used as diagnostic tests for mitochondrial diseases (FGF-21 positive predictive value [PPV] = 34%, negative predictive value [NPV] = 73%; GDF-15 PPV = 47%, NPV = 28%). We suggest that FGF-21 and GDF-15 increase in patients with metabolic diseases with metabolic or oxidative stress and inflammation.
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Affiliation(s)
- Polina G Tsygankova
- Laboratory of Inherited Metabolic Diseases, Research Centre for Medical Genetics, Moscow, Russia
- Laboratory of DNA-Diagnostic, Research Centre for Medical Genetics, Moscow, Russia
| | - Yulia S Itkis
- Laboratory of Inherited Metabolic Diseases, Research Centre for Medical Genetics, Moscow, Russia
- Laboratory of DNA-Diagnostic, Research Centre for Medical Genetics, Moscow, Russia
| | - Tatiana D Krylova
- Laboratory of Inherited Metabolic Diseases, Research Centre for Medical Genetics, Moscow, Russia
- Laboratory of DNA-Diagnostic, Research Centre for Medical Genetics, Moscow, Russia
| | - Marina V Kurkina
- Laboratory of Inherited Metabolic Diseases, Research Centre for Medical Genetics, Moscow, Russia
- Laboratory of DNA-Diagnostic, Research Centre for Medical Genetics, Moscow, Russia
| | - Igor O Bychkov
- Laboratory of Inherited Metabolic Diseases, Research Centre for Medical Genetics, Moscow, Russia
- Laboratory of DNA-Diagnostic, Research Centre for Medical Genetics, Moscow, Russia
| | - Aleksandra A Ilyushkina
- Laboratory of Inherited Metabolic Diseases, Research Centre for Medical Genetics, Moscow, Russia
- Laboratory of DNA-Diagnostic, Research Centre for Medical Genetics, Moscow, Russia
| | - Viktoria V Zabnenkova
- Laboratory of Inherited Metabolic Diseases, Research Centre for Medical Genetics, Moscow, Russia
- Laboratory of DNA-Diagnostic, Research Centre for Medical Genetics, Moscow, Russia
| | | | - Natalia L Pechatnikova
- Center for Orphan Diseases, Morozov Municipal Children's Hospital of Moscow City Public Health Department, Moscow, Russia
| | - Natalia L Sheremet
- Department of Retina and Optic Nerve Diseases, Research Institute of Eye Diseases, Moscow, Russia
| | - Ekaterina Y Zakharova
- Laboratory of Inherited Metabolic Diseases, Research Centre for Medical Genetics, Moscow, Russia
- Laboratory of DNA-Diagnostic, Research Centre for Medical Genetics, Moscow, Russia
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Kozlova IO, Zabnenkova VV, Shilova NV, Min'zhenkova ME, Antonenko VG, Kotlukova NP, Simonova LV, Kazanceva IA, Levchenko EG, Bombardirova TD, Zolotukhina TV, Poliakov AV. [Genetic and clinical characteristics of 22q11.2 deletion syndrome]. Genetika 2014; 50:602-610. [PMID: 25715476] [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: 06/04/2023]
Abstract
In a group of 140 patients with typical phenotype, the 22q11.2 microdeletion was detected in 43 patients (32%) using FISH and MLPA methods. There were no deletions of other chromosomal loci leading to phenotypes similar to the 22q11.2 deletion syndrome (22q11.2DS). Sequencing of the TBX1 gene did not detect any mutations, except for some common neutral polymorphisms. For the first time in the Russian Federation, the diagnostic efficiency of 22q11.2DS appeared to be 32%, as a result of the application of a combination of genetic approaches for a large group of patients with suspected 22q11.2DS.
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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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