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Wielgos M, Kosinski P, Jedrzejak P, Krajewska-Walasek M, Bartnik-Glaska M, Nowakowska B, Jezela-Stanek A. How does terminal 21q22 deletion really manifest? Delineation based on prenatal diagnosis and literature review. Taiwan J Obstet Gynecol 2021; 60:1121-1125. [PMID: 34794750 DOI: 10.1016/j.tjog.2021.09.029] [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] [Accepted: 06/13/2021] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVE Most genetic disorders, especially rare and manifested with an unspecific constellation of developmental anomalies, are challenging to diagnose before birth. The paper aims to present a rare case of terminal 21q22 deletion to extend the knowledge on this rare genetic disease, mostly to facilitate prenatal guidance by pointing the diagnostic features. CASE REPORT The fetus was diagnosed prenatally, at 21 weeks of gestation, due to ultrasound markers detected in a routine ultrasound scan. Post-mortem dysmorphological assessment has verified the diagnosis. To the best of our knowledge, this is the second report of prenatal presentation of partial monosomy 21q. CONCLUSION By giving the detailed phenotype description and presenting a comprehensive literature review on the subject, we delineate its phenotype, which was different from what has been shown in the literature. Specifically, the clinical presentation of aberration within regions 2 and 3 (referring to the term proposed by Lyle et al., in 2009) of 21q22 bands is not characterised by multiple or severe malformations, which matters for prenatal counselling and diagnostics.
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Affiliation(s)
- Miroslaw Wielgos
- 1st Department of Obstetrics and Gynecology, Medical University of Warsaw, Poland.
| | - Przemyslaw Kosinski
- 1st Department of Obstetrics and Gynecology, Medical University of Warsaw, Poland.
| | - Piotr Jedrzejak
- 1st Department of Obstetrics and Gynecology, Medical University of Warsaw, Poland.
| | - Małgorzata Krajewska-Walasek
- Department of Genetics and Clinical Immunology, National Institute of Tuberculosis and Lung Diseases, Warsaw, Poland; Department of Medical Genetics, The Children' Memorial Health Institute, Warsaw, Poland.
| | | | - Beata Nowakowska
- Department of Medical Genetics, The Institute of Mother and Child, Warsaw, Poland.
| | - Aleksandra Jezela-Stanek
- Department of Genetics and Clinical Immunology, National Institute of Tuberculosis and Lung Diseases, Warsaw, Poland.
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2
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Różdżyńska-Świątkowska A, Ciara E, Halat-Wolska P, Krajewska-Walasek M, Jezela-Stanek A. Correction to: Anthropometric characteristics of 65 Polish Smith-Lemli-Opitz patients. J Appl Genet 2021; 62:525. [PMID: 34043176 DOI: 10.1007/s13353-021-00639-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - E Ciara
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
| | - P Halat-Wolska
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
| | - M Krajewska-Walasek
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
- Department of Genetics and Clinical Immunology, National Institute of Tuberculosis and Lung Diseases, Warsaw, Poland
| | - A Jezela-Stanek
- Department of Genetics and Clinical Immunology, National Institute of Tuberculosis and Lung Diseases, Warsaw, Poland.
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3
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Jakubiak A, Szczałuba K, Badura-Stronka M, Kutkowska-Kaźmierczak A, Jakubiuk-Tomaszuk A, Chilarska T, Pilch J, Braun-Walicka N, Castaneda J, Wołyńska K, Wiśniewska M, Kugaudo M, Bielecka M, Pesz K, Wierzba J, Latos-Bieleńska A, Obersztyn E, Krajewska-Walasek M, Śmigiel R. Clinical characteristics of Polish patients with molecularly confirmed Mowat-Wilson syndrome. J Appl Genet 2021; 62:477-485. [PMID: 33982229 PMCID: PMC8357696 DOI: 10.1007/s13353-021-00636-1] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/28/2021] [Accepted: 05/02/2021] [Indexed: 11/26/2022]
Abstract
Mowat-Wilson syndrome is a rare neurodevelopmental disorder caused by pathogenic variants in the ZEB2 gene, intragenic deletions of the ZEB2 gene, and microdeletions in the critical chromosomal region 2q22-23, where the ZEB2 gene is located. Mowat-Wilson syndrome is characterized by typical facial features that change with the age, severe developmental delay with intellectual disability, and multiple congenital abnormalities. The authors describe the clinical and genetic aspects of 28th patients with Mowat-Wilson syndrome diagnosed in Poland. Characteristic dysmorphic features, psychomotor retardation, intellectual disability, and congenital anomalies were present in all cases. The incidence of most common congenital anomalies (heart defect, Hirschsprung disease, brain defects) was similar to presented in literature. Epilepsy was less common compared to previously reported cases. Although the spectrum of disorders in patients with Mowat-Wilson syndrome is wide, knowledge of characteristic dysmorphic features awareness of accompanying abnormalities, especially intellectual disability, improves detection of the syndrome.
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Affiliation(s)
- Aleksandra Jakubiak
- Department of Paediatrics, Division of Paediatric Propaedeutics and Rare Disorders, Medical University, Wroclaw, Poland.
| | | | | | | | - Anna Jakubiuk-Tomaszuk
- Department of Neurology and Children Rehabilitation, Medical University, Bialystok, Poland
- Medical Genetics Unit, Mastermed Medical Center, Bialystok, Poland
| | - Tatiana Chilarska
- Department of Genetics, Polish Mother's Memorial Hospital Research Institute, Lodz, Poland
| | - Jacek Pilch
- Department of Paediatric Neurology, Medical University of Silesia, Katowice, Poland
| | | | - Jennifer Castaneda
- Department of Medical Genetics, Institute of Mother and Child, Warsaw, Poland
| | | | | | - Monika Kugaudo
- Department of Children and Adolescent Psychiatry, University Clinical Centre, Paediatric Teaching Clinical Hospital, Warsaw, Poland
| | - Monika Bielecka
- Department of Pharmaceutical Biotechnology, Medical University, Wroclaw, Poland
| | - Karolina Pesz
- Department of Genetics, Medical University, Wroclaw, Poland
| | - Jolanta Wierzba
- Department of Internal and Paediatric Nursing, Institute of Nursing and Midwifery, Medical University Gdansk, Gdansk, Poland
| | | | - Ewa Obersztyn
- Department of Medical Genetics, Institute of Mother and Child, Warsaw, Poland
| | | | - Robert Śmigiel
- Department of Paediatrics, Division of Paediatric Propaedeutics and Rare Disorders, Medical University, Wroclaw, Poland
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4
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Różdżyńska-Świątkowska A, Ciara E, Halat-Wolska P, Krajewska-Walasek M, Jezela-Stanek A. Anthropometric characteristics of 65 Polish Smith-Lemli-Opitz patients. J Appl Genet 2021; 62:469-475. [PMID: 33890232 DOI: 10.1007/s13353-021-00632-5] [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] [Received: 02/25/2021] [Revised: 03/23/2021] [Accepted: 04/07/2021] [Indexed: 11/26/2022]
Abstract
Smith-Lemli-Opitz syndrome (SLOS) belongs to a group of multiple congenital anomaly/developmental delay disorders. Its primary cause lies in the defect in cholesterol biosynthesis-7-dehydrocholesterol reductase (DHCR7)-caused by pathogenic variants in the homonymous gene. Anthropometric anomalies, especially growth restriction and microcephaly, are among the most common physical manifestations of SLOS. There have been no studies analyzing the correlation between genotype, biochemical marker (7-dehydrocholesterol), and the birth and growth parameters for individuals with SLOS. This paper presents anthropometric data from the group of 65 Polish patients (aged 0.1 to 18 years) with Smith-Lemli-Opitz syndrome, with genotype and biochemical correlations for birth parameters, as well as growth in relation to molecular DHCR7 variants.
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Affiliation(s)
| | - E Ciara
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
| | - P Halat-Wolska
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
| | - M Krajewska-Walasek
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
- Department of Genetics and Clinical Immunology, National Institute of Tuberculosis and Lung Diseases, Warsaw, Poland
| | - A Jezela-Stanek
- Department of Genetics and Clinical Immunology, National Institute of Tuberculosis and Lung Diseases, Warsaw, Poland.
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5
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Jurkiewicz D, Ciara E, Krajewska-Walasek M, Chrzanowska K. DNA methylation as an epigenetic biomarker in imprinting
disorders. POSTEP HIG MED DOSW 2020. [DOI: 10.5604/01.3001.0014.5687] [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: 11/13/2022] Open
Abstract
Epigenetic modifications control gene expression and enable the same genotype to lead
to various phenotypes, thus exhibiting extensive variability in human cells function.
DNA methylation is one of the most often investigated epigenetic modifications, playing
a key part in genomic imprinting. Genomic imprinting is an epigenetic process by which
the male and the female germ cells confer specific marks (imprints). Maternal chromatin
marks differ from paternal ones, leading to expression of specific genes from only one allele.
Disturbance in imprinting process results in epimutations, which are epigenetic defects,
including DNA methylation changes. These abnormalities are identified in a group of imprinting disorders, associated with abnormal growth, development, behaviour and metabolism.
Epimutations can occur spontaneously without any accompanying variant in DNA
genomic sequence (a primary epimutation), whose defect can be a result of environmental
factors. They can also be caused by changes in DNA sequence of genes involved in imprinting
process (a secondary epimutation). DNA methylation in imprinting control regions is
a very useful epigenetic biomarker and its detection is applied in the diagnostics of imprinting
disorders. At present, various techniques for DNA methylation analysis are employed,
which allow for investigations of one to several imprinted loci or the whole genome. DNA
methylation studies are important not only in medical molecular diagnostics but are crucial
in the search for therapies that would restore normal epigenetic status in patients.
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Affiliation(s)
- Dorota Jurkiewicz
- Zakład Genetyki Medycznej, Instytut „Pomnik-Centrum Zdrowia Dziecka”, Warszawa
| | - Elżbieta Ciara
- Zakład Genetyki Medycznej, Instytut „Pomnik-Centrum Zdrowia Dziecka”, Warszawa
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Jezela-Stanek A, Ciara E, Jurkiewicz D, Kucharczyk M, Jędrzejowska M, Chrzanowska KH, Krajewska-Walasek M, Żemojtel T. The phenotype-driven computational analysis yields clinical diagnosis for patients with atypical manifestations of known intellectual disability syndromes. Mol Genet Genomic Med 2020; 8:e1263. [PMID: 32337850 PMCID: PMC7507388 DOI: 10.1002/mgg3.1263] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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: 10/04/2019] [Revised: 02/24/2020] [Accepted: 03/01/2020] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Due to extensive clinical and genetic heterogeneity of intellectual disability (ID) syndromes, the process of diagnosis is very challenging even for expert clinicians. Despite recent advancements in molecular diagnostics methodologies, a significant fraction of ID patients remains without a clinical diagnosis. METHODS, RESULTS, AND CONCLUSIONS Here, in a prospective study on a cohort of 21 families (trios) with a child presenting with ID of unknown etiology, we executed phenotype-driven bioinformatic analysis method, PhenIX, utilizing targeted next-generation sequencing (NGS) data and Human Phenotype Ontology (HPO)-encoded phenotype data. This approach resulted in clinical diagnosis for eight individuals presenting with atypical manifestations of Rubinstein-Taybi syndrome 2 (MIM 613684), Spastic Paraplegia 50 (MIM 612936), Wiedemann-Steiner syndrome (MIM 605130), Cornelia de Lange syndrome 2 (MIM 300590), Cerebral creatine deficiency syndrome 1 (MIM 300352), Glass Syndrome (MIM 612313), Mental retardation, autosomal dominant 31 (MIM 616158), and Bosch-Boonstra-Schaaf optic atrophy syndrome (MIM 615722).
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Affiliation(s)
- Aleksandra Jezela-Stanek
- Department of Genetics and Clinical Immunology, National Institute of Tuberculosis and Lung Diseases, Warsaw, Poland.,Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
| | - Elżbieta Ciara
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
| | - Dorota Jurkiewicz
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
| | - Marzena Kucharczyk
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
| | - Maria Jędrzejowska
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland.,Mossakowski Medical Research Centre, Neuromuscular Unit, Polish Academy of Sciences, Warsaw, Poland
| | - Krystyna H Chrzanowska
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
| | | | - Tomasz Żemojtel
- Genomics Platform, Berlin Institute of Health, Berlin, Germany.,Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
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7
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Murcia Pienkowski V, Kucharczyk M, Rydzanicz M, Poszewiecka B, Pachota K, Młynek M, Stawiński P, Pollak A, Kosińska J, Wojciechowska K, Lejman M, Cieślikowska A, Wicher D, Stembalska A, Matuszewska K, Materna-Kiryluk A, Gambin A, Chrzanowska K, Krajewska-Walasek M, Płoski R. Breakpoint Mapping of Symptomatic Balanced Translocations Links the EPHA6, KLF13 and UBR3 Genes to Novel Disease Phenotype. J Clin Med 2020; 9:jcm9051245. [PMID: 32344861 PMCID: PMC7287862 DOI: 10.3390/jcm9051245] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 03/26/2020] [Revised: 04/19/2020] [Accepted: 04/23/2020] [Indexed: 12/18/2022] Open
Abstract
De novo balanced chromosomal aberrations (BCAs), such as reciprocal translocations and inversions, are genomic aberrations that, in approximately 25% of cases, affect the human phenotype. Delineation of the exact structure of BCAs may provide a precise diagnosis and/or point to new disease loci. We report on six patients with de novo balanced chromosomal translocations (BCTs) and one patient with a de novo inversion, in whom we mapped breakpoints to a resolution of 1 bp, using shallow whole-genome mate pair sequencing. In all seven cases, a disruption of at least one gene was found. In two patients, the phenotypic impact of the disrupted genes is well known (NFIA, ATP7A). In five patients, the aberration damaged genes: PARD3, EPHA6, KLF13, STK24, UBR3, MLLT10 and TLE3, whose influence on the human phenotype is poorly understood. In particular, our results suggest novel candidate genes for retinal degeneration with anophthalmia (EPHA6), developmental delay with speech impairment (KLF13), and developmental delay with brain dysembryoplastic neuroepithelial tumor (UBR3). In conclusion, identification of the exact structure of symptomatic BCTs using next generation sequencing is a viable method for both diagnosis and finding novel disease candidate genes in humans.
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Affiliation(s)
- Victor Murcia Pienkowski
- Department of Medical Genetics, Medical University of Warsaw, 02-106 Warsaw, Poland; (V.M.P.); (M.R.); (P.S.); (A.P.); (J.K.)
| | - Marzena Kucharczyk
- Department of Medical Genetics, The Children’s Memorial Health Institute, 04-730 Warsaw, Poland; (M.K.); (K.P.); (M.M.); (A.C.); (D.W.); (K.C.); (M.K.-W.)
| | - Małgorzata Rydzanicz
- Department of Medical Genetics, Medical University of Warsaw, 02-106 Warsaw, Poland; (V.M.P.); (M.R.); (P.S.); (A.P.); (J.K.)
| | - Barbara Poszewiecka
- Institute of Informatics, Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, 02-097 Warsaw, Poland; (B.P.); (A.G.)
| | - Katarzyna Pachota
- Department of Medical Genetics, The Children’s Memorial Health Institute, 04-730 Warsaw, Poland; (M.K.); (K.P.); (M.M.); (A.C.); (D.W.); (K.C.); (M.K.-W.)
| | - Marlena Młynek
- Department of Medical Genetics, The Children’s Memorial Health Institute, 04-730 Warsaw, Poland; (M.K.); (K.P.); (M.M.); (A.C.); (D.W.); (K.C.); (M.K.-W.)
| | - Piotr Stawiński
- Department of Medical Genetics, Medical University of Warsaw, 02-106 Warsaw, Poland; (V.M.P.); (M.R.); (P.S.); (A.P.); (J.K.)
| | - Agnieszka Pollak
- Department of Medical Genetics, Medical University of Warsaw, 02-106 Warsaw, Poland; (V.M.P.); (M.R.); (P.S.); (A.P.); (J.K.)
| | - Joanna Kosińska
- Department of Medical Genetics, Medical University of Warsaw, 02-106 Warsaw, Poland; (V.M.P.); (M.R.); (P.S.); (A.P.); (J.K.)
| | - Katarzyna Wojciechowska
- Department of Pediatric Hematology Oncology and Transplantology, University Children’s Hospital, 20-093 Lublin, Poland;
| | - Monika Lejman
- Department of Pediatric Hematology Oncology and Transplantology, Medical University of Lublin, 20-093 Lublin, Poland;
| | - Agata Cieślikowska
- Department of Medical Genetics, The Children’s Memorial Health Institute, 04-730 Warsaw, Poland; (M.K.); (K.P.); (M.M.); (A.C.); (D.W.); (K.C.); (M.K.-W.)
| | - Dorota Wicher
- Department of Medical Genetics, The Children’s Memorial Health Institute, 04-730 Warsaw, Poland; (M.K.); (K.P.); (M.M.); (A.C.); (D.W.); (K.C.); (M.K.-W.)
| | | | - Karolina Matuszewska
- Department of Medical Genetics, University of Medical Sciences, 60-806 Poznan, Poland; (K.M.); (A.M.-K.)
- Centers for Medical Genetics GENESIS, Grudzieniec, 60-406 Poznan, Poland
| | - Anna Materna-Kiryluk
- Department of Medical Genetics, University of Medical Sciences, 60-806 Poznan, Poland; (K.M.); (A.M.-K.)
- Centers for Medical Genetics GENESIS, Grudzieniec, 60-406 Poznan, Poland
| | - Anna Gambin
- Institute of Informatics, Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, 02-097 Warsaw, Poland; (B.P.); (A.G.)
| | - Krystyna Chrzanowska
- Department of Medical Genetics, The Children’s Memorial Health Institute, 04-730 Warsaw, Poland; (M.K.); (K.P.); (M.M.); (A.C.); (D.W.); (K.C.); (M.K.-W.)
| | - Małgorzata Krajewska-Walasek
- Department of Medical Genetics, The Children’s Memorial Health Institute, 04-730 Warsaw, Poland; (M.K.); (K.P.); (M.M.); (A.C.); (D.W.); (K.C.); (M.K.-W.)
| | - Rafał Płoski
- Department of Medical Genetics, Medical University of Warsaw, 02-106 Warsaw, Poland; (V.M.P.); (M.R.); (P.S.); (A.P.); (J.K.)
- Correspondence: ; Tel.: +48-22-572-06-95; Fax: +48-22-572-06-96
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8
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Piekutowska-Abramczuk D, Kaliszewska M, Sułek A, Jurkowska N, Ołtarzewski M, Jabłońska E, Trubicka J, Głowacka A, Ciara E, Kowalski P, Langiewicz-Wojciechowska K, Tesarova M, Zeman J, Kierdaszuk B, Kuczyński D, Chmielewski D, Szymańska E, Bakuła A, Łusakowska A, Lipowska M, Brodacki B, Pera J, Dorobek M, Rydzanicz M, Płoski R, Chrzanowska KH, Bartnik E, Placha G, Kamińska A, Kostera-Pruszczyk A, Krajewska-Walasek M, Tońska K, Pronicka E. The frequency of mitochondrial polymerase gamma related disorders in a large Polish population cohort. Mitochondrion 2019; 47:179-187. [DOI: 10.1016/j.mito.2018.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 10/02/2018] [Accepted: 11/02/2018] [Indexed: 02/06/2023]
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9
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Murcia Pienkowski V, Kucharczyk M, Młynek M, Szczałuba K, Rydzanicz M, Poszewiecka B, Skórka A, Sykulski M, Biernacka A, Koppolu AA, Posmyk R, Walczak A, Kosińska J, Krajewski P, Castaneda J, Obersztyn E, Jurkiewicz E, Śmigiel R, Gambin A, Chrzanowska K, Krajewska-Walasek M, Płoski R. Mapping of breakpoints in balanced chromosomal translocations by shallow whole-genome sequencing points to EFNA5, BAHD1 and PPP2R5E as novel candidates for genes causing human Mendelian disorders. J Med Genet 2018; 56:104-112. [PMID: 30352868 DOI: 10.1136/jmedgenet-2018-105527] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 06/10/2018] [Revised: 09/21/2018] [Accepted: 09/22/2018] [Indexed: 11/04/2022]
Abstract
BACKGROUND Mapping the breakpoints in de novo balanced chromosomal translocations (BCT) in symptomatic individuals provides a unique opportunity to identify in an unbiased way the likely causative genetic defect and thus find novel human disease candidate genes. Our aim was to fine-map breakpoints of de novo BCTs in a case series of nine patients. METHODS Shallow whole-genome mate pair sequencing (SGMPS) together with long-range PCR and Sanger sequencing. In one case (BCT disrupting BAHD1 and RET) cDNA analysis was used to verify expression of a fusion transcript in cultured fibroblasts. RESULTS In all nine probands 11 disrupted genes were found, that is, EFNA5, EBF3, LARGE, PPP2R5E, TXNDC5, ZNF423, NIPBL, BAHD1, RET, TRPS1 and SLC4A10. Five subjects had translocations that disrupted genes with so far unknown (EFNA5, BAHD1, PPP2R5E, TXNDC5) or poorly delineated impact on the phenotype (SLC4A10, two previous reports of BCT disrupting the gene). The four genes with no previous disease associations (EFNA5, BAHD1, PPP2R5E, TXNDC5), when compared with all human genes by a bootstrap test, had significantly higher pLI (p<0.017) and DOMINO (p<0.02) scores indicating enrichment in genes likely to be intolerant to single copy damage. Inspection of individual pLI and DOMINO scores, and local topologically associating domain structure suggested that EFNA5, BAHD1 and PPP2R5E were particularly good candidates for novel disease loci. The pathomechanism for BAHD1 may involve deregulation of expression due to fusion with RET promoter. CONCLUSION SGMPS in symptomatic carriers of BCTs is a powerful approach to delineate novel human gene-disease associations.
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Affiliation(s)
- Victor Murcia Pienkowski
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Marzena Kucharczyk
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
| | - Marlena Młynek
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
| | - Krzysztof Szczałuba
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland
| | | | - Barbara Poszewiecka
- Faculty of Mathematics, Informatics and Mechanics, Institute of Informatics, University of Warsaw, Warsaw, Poland
| | - Agata Skórka
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland.,Department of Pediatrics, Medical University of Warsaw, Warsaw, Poland
| | - Maciej Sykulski
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland.,genXone, Poznan, Poland
| | - Anna Biernacka
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Agnieszka Anna Koppolu
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Renata Posmyk
- Department of Clinical Genetics, Podlaskie Medical Center, Bialystok, Poland.,Department of Perinatology, Medical University of Bialystok, Bialystok, Poland
| | - Anna Walczak
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland
| | - Joanna Kosińska
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland
| | - Paweł Krajewski
- Department of Forensic Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Jennifer Castaneda
- Department of Medical Genetics, Institute of Mother and Child, Warsaw, Poland
| | - Ewa Obersztyn
- Department of Medical Genetics, Institute of Mother and Child, Warsaw, Poland
| | - Elżbieta Jurkiewicz
- Department of Diagnostic Imaging, The Children's Memorial Health Institute, Warsaw, Poland
| | - Robert Śmigiel
- Department of Pediatrics and Rare Disorder, Wroclaw Medical University, Wroclaw, Poland
| | - Anna Gambin
- Faculty of Mathematics, Informatics and Mechanics, Institute of Informatics, University of Warsaw, Warsaw, Poland
| | - Krystyna Chrzanowska
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
| | | | - Rafał Płoski
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland
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10
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Gawliński P, Pelc M, Ciara E, Jhangiani S, Jurkiewicz E, Gambin T, Różdżyńska-Świątkowska A, Dawidziuk M, Coban-Akdemir Z, Guilbride D, Muzny D, Lupski J, Krajewska-Walasek M. Phenotype expansion and development in Kosaki overgrowth syndrome. Clin Genet 2018; 93:919-924. [DOI: 10.1111/cge.13192] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 11/19/2017] [Accepted: 11/20/2017] [Indexed: 01/09/2023]
Affiliation(s)
- P. Gawliński
- Department of Medical Genetics; Institute of Mother and Child; Warsaw Poland
| | - M. Pelc
- Department of Medical Genetics; The Children's Memorial Health Institute; Warsaw Poland
| | - E. Ciara
- Department of Medical Genetics; The Children's Memorial Health Institute; Warsaw Poland
| | - S. Jhangiani
- Human Genome Sequencing Center; Baylor College of Medicine; Houston Texas
| | - E. Jurkiewicz
- Department of Diagnostic Imaging; The Children's Memorial Health Institute; Warsaw Poland
| | - T. Gambin
- Department of Medical Genetics; Institute of Mother and Child; Warsaw Poland
- Institute of Computer Science; Warsaw University of Technology; Warsaw Texas
- Department of Molecular and Human Genetics; Baylor College of Medicine; Houston Texas
| | | | - M. Dawidziuk
- Department of Medical Genetics; Institute of Mother and Child; Warsaw Poland
| | - Z.H. Coban-Akdemir
- Department of Molecular and Human Genetics; Baylor College of Medicine; Houston Texas
| | | | - D. Muzny
- Human Genome Sequencing Center; Baylor College of Medicine; Houston Texas
| | - J.R. Lupski
- Department of Molecular and Human Genetics; Baylor College of Medicine; Houston Texas
- Human Genome Sequencing Center; Baylor College of Medicine; Houston Texas
- Texas Children's Hospital; Houston Texas
| | - M. Krajewska-Walasek
- Department of Medical Genetics; The Children's Memorial Health Institute; Warsaw Poland
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11
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Rokicki D, Pajdowska M, Trubicka J, Thong MK, Ciara E, Piekutowska-Abramczuk D, Pronicki M, Sikora R, Haidar R, Ołtarzewski M, Jabłońska E, Muthukumarasamy P, Sthaneswar P, Gan CS, Krajewska-Walasek M, Carrozzo R, Verrigni D, Semeraro M, Rizzo C, Taurisano R, Alhaddad B, Kovacs-Nagy R, Haack TB, Dionisi-Vici C, Pronicka E, Wortmann SB. 3-Methylglutaconic aciduria, a frequent but underrecognized finding in carbamoyl phosphate synthetase I deficiency. Clin Chim Acta 2017; 471:95-100. [DOI: 10.1016/j.cca.2017.05.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 05/16/2017] [Accepted: 05/16/2017] [Indexed: 12/16/2022]
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12
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Trubicka J, Żemojtel T, Hecht J, Falana K, Piekutowska- Abramczuk D, Płoski R, Perek-Polnik M, Drogosiewicz M, Grajkowska W, Ciara E, Moszczyńska E, Dembowska-Bagińska B, Perek D, Chrzanowska KH, Krajewska-Walasek M, Łastowska M. The germline variants in DNA repair genes in pediatric medulloblastoma: a challenge for current therapeutic strategies. BMC Cancer 2017; 17:239. [PMID: 28376765 PMCID: PMC5379555 DOI: 10.1186/s12885-017-3211-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 03/22/2017] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND The defects in DNA repair genes are potentially linked to development and response to therapy in medulloblastoma. Therefore the purpose of this study was to establish the spectrum and frequency of germline variants in selected DNA repair genes and their impact on response to chemotherapy in medulloblastoma patients. METHODS The following genes were investigated in 102 paediatric patients: MSH2 and RAD50 using targeted gene panel sequencing and NBN variants (p.I171V and p.K219fs*19) by Sanger sequencing. In three patients with presence of rare life-threatening adverse events (AE) and no detected variants in the analyzed genes, whole exome sequencing was performed. Based on combination of molecular and immunohistochemical evaluations tumors were divided into molecular subgroups. Presence of variants was tested for potential association with the occurrence of rare life-threatening AE and other clinical features. RESULTS We have identified altogether six new potentially pathogenic variants in MSH2 (p.A733T and p.V606I), RAD50 (p.R1093*), FANCM (p.L694*), ERCC2 (p.R695C) and EXO1 (p.V738L), in addition to two known NBN variants. Five out of twelve patients with defects in either of MSH2, RAD50 and NBN genes suffered from rare life-threatening AE, more frequently than in control group (p = 0.0005). When all detected variants were taken into account, the majority of patients (8 out of 15) suffered from life-threatening toxicity during chemotherapy. CONCLUSION Our results, based on the largest systematic study performed in a clinical setting, provide preliminary evidence for a link between defects in DNA repair genes and treatment related toxicity in children with medulloblastoma. The data suggest that patients with DNA repair gene variants could need special vigilance during and after courses of chemotherapy.
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Affiliation(s)
- Joanna Trubicka
- Department of Medical Genetics, The Children’s Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland
- Department of Pathology, The Children’s Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland
| | - Tomasz Żemojtel
- Institute for Medical Genetics and Human Genetics, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, 60-569 Poznan, Poland
| | - Jochen Hecht
- Max Planck Institute for Molecular Genetics, Ihnestr. 63-73, 14195 Berlin, Germany
- Berlin-Brandenburg Center for Regenerative Therapies, Charité Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Katarzyna Falana
- Department of Medical Genetics, The Children’s Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland
| | - Dorota Piekutowska- Abramczuk
- Department of Medical Genetics, The Children’s Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland
| | - Rafał Płoski
- Department of Medical Genetics, Warsaw Medical University, Warsaw, Poland
| | - Marta Perek-Polnik
- Department of Oncology, The Children’s Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland
| | - Monika Drogosiewicz
- Department of Oncology, The Children’s Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland
| | - Wiesława Grajkowska
- Department of Pathology, The Children’s Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland
- Department of Experimental and Clinical Pathology, Mossakowski Medical Research Centre Polish Academy of Sciences, A. Pawińskiego 5, 02-106 Warsaw, Poland
| | - Elżbieta Ciara
- Department of Medical Genetics, The Children’s Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland
| | - Elżbieta Moszczyńska
- Department of Endocrinology and Diabetology, The Children’s Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland
| | - Bożenna Dembowska-Bagińska
- Department of Oncology, The Children’s Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland
| | - Danuta Perek
- Department of Oncology, The Children’s Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland
| | - Krystyna H. Chrzanowska
- Department of Medical Genetics, The Children’s Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland
| | - Małgorzata Krajewska-Walasek
- Department of Medical Genetics, The Children’s Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland
| | - Maria Łastowska
- Department of Pathology, The Children’s Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland
- Department of Experimental and Clinical Pathology, Mossakowski Medical Research Centre Polish Academy of Sciences, A. Pawińskiego 5, 02-106 Warsaw, Poland
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Iwanicka-Pronicka K, Socha M, Jędrzejowska M, Krajewska-Walasek M, Jamsheer A. Life-threatening cardiac episode in a Polish patient carrying contiguous gene microdeletion of the TBX5 and the TBX3 genes. Springerplus 2016; 5:1638. [PMID: 27722056 PMCID: PMC5031565 DOI: 10.1186/s40064-016-3275-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 09/08/2016] [Indexed: 11/10/2022]
Abstract
Holt-Oram syndrome (HOS) features radial ray hypoplasia, heart defect and cardiac conduction impairment. Ulnar-mammary syndrome (UMS) characterizes congenital defects of the ulnar side of the upper limbs, underdevelopment of apocrine glands including hypoplasia and the dysfunction of mammary glands, hypogonadism and obesity. Inheritance of both conditions is autosomal dominant, mutations or deletions are found in the TBX5 and TBX3 gene, respectively. The Polish patient presented short stature, obesity, congenital malformation of the radial and ulnar side of the upper limbs, heart block, hypogonadism and dysmorphic features. At the age of 13 years he lost consciousness developing respiratory insufficiency caused by bradycardia in the course of sudden atrioventricular third degree heart block requiring immediate implantation of pace maker-defibrillator device. Microdeletion of the 12q24.21 was identified using array CGH method. This region includes contiguous genes the TBX5, TBX3, and part of RBM19. The patient initially diagnosed as having HOS, was found to present the UMS features as well. Array CGH method should be applied in patients suspected of HOS or UMS, especially when sequencing of TBX5 or TBX3 genes fails to identify causative mutation.
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Affiliation(s)
- Katarzyna Iwanicka-Pronicka
- Department of Medical Genetics, Children's Memorial Health Institute, Al. Dzieci Polskich 20, 04-930 Warsaw, Poland ; Department of Audiology and Phoniatrics, Children's Memorial Health Institute, Al. Dzieci Polskich 20, 04-930 Warsaw, Poland
| | - Magdalena Socha
- Department of Medical Genetics, Poznan University of Medical Sciences, Fredry 10, 61-701 Poznan, Poland
| | - Maria Jędrzejowska
- Department of Medical Genetics, Children's Memorial Health Institute, Al. Dzieci Polskich 20, 04-930 Warsaw, Poland
| | - Małgorzata Krajewska-Walasek
- Department of Medical Genetics, Children's Memorial Health Institute, Al. Dzieci Polskich 20, 04-930 Warsaw, Poland
| | - Aleksander Jamsheer
- Department of Medical Genetics, Poznan University of Medical Sciences, Fredry 10, 61-701 Poznan, Poland ; NZOZ Center for Medical Genetics, GENESIS ul. Grudzieniec 4, 60-601 Poznan, Poland
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14
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Jurkiewicz D, Kugaudo M, Skórka A, Śmigiel R, Smyk M, Ciara E, Chrzanowska K, Krajewska-Walasek M. A novelIGF2/H19domain triplication in the 11p15.5 imprinting region causing either Beckwith-Wiedemann or Silver-Russell syndrome in a single family. Am J Med Genet A 2016; 173:72-78. [DOI: 10.1002/ajmg.a.37964] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 08/22/2016] [Indexed: 12/16/2022]
Affiliation(s)
- Dorota Jurkiewicz
- Department of Medical Genetics; Children's Memorial Health Institute; Warsaw Poland
| | - Monika Kugaudo
- Department of Medical Genetics; Children's Memorial Health Institute; Warsaw Poland
- Department of Child and Adolescent Psychiatry; Medical University of Warsaw; Warsaw Poland
| | - Agata Skórka
- Department of Medical Genetics; Children's Memorial Health Institute; Warsaw Poland
- Department of Pediatrics; Medical University of Warsaw; Warsaw Poland
| | - Robert Śmigiel
- Department of Pediatrics; Wroclaw Medical University; Wroclaw Poland
| | - Marta Smyk
- Department of Medical Genetics; Institute of Mother and Child; Warsaw Poland
| | - Elżbieta Ciara
- Department of Medical Genetics; Children's Memorial Health Institute; Warsaw Poland
| | - Krystyna Chrzanowska
- Department of Medical Genetics; Children's Memorial Health Institute; Warsaw Poland
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15
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Pronicka E, Piekutowska-Abramczuk D, Ciara E, Trubicka J, Rokicki D, Karkucińska-Więckowska A, Pajdowska M, Jurkiewicz E, Halat P, Kosińska J, Pollak A, Rydzanicz M, Stawinski P, Pronicki M, Krajewska-Walasek M, Płoski R. New perspective in diagnostics of mitochondrial disorders: two years' experience with whole-exome sequencing at a national paediatric centre. J Transl Med 2016; 14:174. [PMID: 27290639 PMCID: PMC4903158 DOI: 10.1186/s12967-016-0930-9] [Citation(s) in RCA: 157] [Impact Index Per Article: 19.6] [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: 03/16/2016] [Accepted: 05/31/2016] [Indexed: 12/30/2022] Open
Abstract
Background Whole-exome sequencing (WES) has led to an exponential increase in identification of causative variants in mitochondrial disorders (MD). Methods We performed WES in 113 MD suspected patients from Polish paediatric reference centre, in whom routine testing failed to identify a molecular defect. WES was performed using TruSeqExome enrichment, followed by variant prioritization, validation by Sanger sequencing, and segregation with the disease phenotype in the family. Results Likely causative mutations were identified in 67 (59.3 %) patients; these included variants in mtDNA (6 patients) and nDNA: X-linked (9 patients), autosomal dominant (5 patients), and autosomal recessive (47 patients, 11 homozygotes). Novel variants accounted for 50.5 % (50/99) of all detected changes. In 47 patients, changes in 31 MD-related genes (ACAD9, ADCK3, AIFM1, CLPB, COX10, DLD, EARS2, FBXL4, MTATP6, MTFMT, MTND1, MTND3, MTND5, NAXE, NDUFS6, NDUFS7, NDUFV1, OPA1, PARS2, PC, PDHA1, POLG, RARS2, RRM2B, SCO2, SERAC1, SLC19A3, SLC25A12, TAZ, TMEM126B, VARS2) were identified. The ACAD9, CLPB, FBXL4, PDHA1 genes recurred more than twice suggesting higher general/ethnic prevalence. In 19 cases, variants in 18 non-MD related genes (ADAR, CACNA1A, CDKL5, CLN3, CPS1, DMD, DYSF, GBE1, GFAP, HSD17B4, MECP2, MYBPC3, PEX5, PGAP2, PIGN, PRF1, SBDS, SCN2A) were found. The percentage of positive WES results rose gradually with increasing probability of MD according to the Mitochondrial Disease Criteria (MDC) scale (from 36 to 90 % for low and high probability, respectively). The percentage of detected MD-related genes compared with non MD-related genes also grew with the increasing MD likelihood (from 20 to 97 %). Molecular diagnosis was established in 30/47 (63.8 %) neonates and in 17/28 (60.7 %) patients with basal ganglia involvement. Mutations in CLPB, SERAC1, TAZ genes were identified in neonates with 3-methylglutaconic aciduria (3-MGA) as a discriminative feature. New MD-related candidate gene (NDUFB8) is under verification. Conclusions We suggest WES rather than targeted NGS as the method of choice in diagnostics of MD in children, including neonates with 3-MGA aciduria, who died without determination of disease cause and with limited availability of laboratory data. There is a strong correlation between the degree of MD diagnosis by WES and MD likelihood expressed by the MDC scale. Electronic supplementary material The online version of this article (doi:10.1186/s12967-016-0930-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ewa Pronicka
- Department of Medical Genetics, The Children's Memorial Health Institute, 04-730, Warsaw, Poland. .,Department of Paediatrics, Nutrition and Metabolic Diseases,, The Children's Memorial Health Institute, Warsaw, Poland.
| | | | - Elżbieta Ciara
- Department of Medical Genetics, The Children's Memorial Health Institute, 04-730, Warsaw, Poland
| | - Joanna Trubicka
- Department of Medical Genetics, The Children's Memorial Health Institute, 04-730, Warsaw, Poland
| | - Dariusz Rokicki
- Department of Paediatrics, Nutrition and Metabolic Diseases,, The Children's Memorial Health Institute, Warsaw, Poland
| | | | - Magdalena Pajdowska
- Department of Biochemistry and Experimental Medicine, The Children's Memorial Health Institute, Warsaw, Poland
| | - Elżbieta Jurkiewicz
- Department of Radiology, The Children's Memorial Health Institute, Warsaw, Poland
| | - Paulina Halat
- Department of Medical Genetics, The Children's Memorial Health Institute, 04-730, Warsaw, Poland
| | - Joanna Kosińska
- Department of Medical Genetics, Warsaw Medical University, Pawińskiego str, 02-106, Warsaw, Poland
| | - Agnieszka Pollak
- Department of Genetics, Institute of Physiology and Pathology of Hearing, Nadarzyn, Poland
| | - Małgorzata Rydzanicz
- Department of Medical Genetics, Warsaw Medical University, Pawińskiego str, 02-106, Warsaw, Poland
| | - Piotr Stawinski
- Department of Genetics, Institute of Physiology and Pathology of Hearing, Nadarzyn, Poland
| | - Maciej Pronicki
- Department of Pathology, The Children's Memorial Health Institute, Warsaw, Poland
| | | | - Rafał Płoski
- Department of Medical Genetics, Warsaw Medical University, Pawińskiego str, 02-106, Warsaw, Poland.
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16
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Ciara E, Rokicki D, Halat P, Karkucińska-Więckowska A, Piekutowska-Abramczuk D, Mayr J, Trubicka J, Szymańska-Dębińska T, Pronicki M, Pajdowska M, Dudzińska M, Giżewska M, Krajewska-Walasek M, Książyk J, Sperl W, Płoski R, Pronicka E. Difficulties in recognition of pyruvate dehydrogenase complex deficiency on the basis of clinical and biochemical features. The role of next-generation sequencing. Mol Genet Metab Rep 2016; 7:70-6. [PMID: 27144126 PMCID: PMC4840431 DOI: 10.1016/j.ymgmr.2016.03.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [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: 03/21/2016] [Accepted: 03/21/2016] [Indexed: 01/31/2023] Open
Abstract
Pyruvate dehydrogenase complex (PDHc) defect is a well-known cause of mitochondrial disorders (MD) with at least six responsible genes (PDHA1, PDHB, DLAT, DLD, PDHX, PDP1). The aim of this work was to assess the diagnostic value of biochemical methods in recognition of PDHc defect in Polish patients with suspicion of MD. In the first step, Western blot of the E1α subunit was performed on 86 archive muscle bioptates with suspicion of MD. In the second step, Sanger PDHA1 sequencing was performed in 21 cases with low E1α expression. In the third step, 7 patients with negative results of PDHA1 sequencing were subjected to whole-exome sequencing (WES). This protocol revealed 4 patients with PDHA1 and one with DLD mutations. Four additional probands were diagnosed outside the protocol (WES or Sanger sequencing). The molecular characterization of PDHc defect was conducted in a total of 9 probands: 5 according to and 4 off the protocol. Additionally, two affected relatives were recognized by a family study. Altogether we identified seven different PDHA1 changes, including two novel variants [c.464T > C (p.Met155Thr) and c.856_859dupACTT (p.Arg288Leufs*10)] and one DLD variant. The lactate response to glucose load in the PDHA1 subset was compared to a subset of non PDHc-related MD. Opposite responses were observed, with an increase of 23% and decrease of 27%, respectively. The results show that determining lactate response to glucose load and muscle E1α expression may contribute to distinguishing PDHc-related and other MD, however, WES is becoming the method of choice for MD diagnostics.
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Affiliation(s)
- E Ciara
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
| | - D Rokicki
- Department of Pediatrics, Nutrition and Metabolic Diseases, The Children's Memorial Health Institute, Warsaw, Poland
| | - P Halat
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
| | | | | | - J Mayr
- Department of Pediatrics, Paracelsus Medical University, Salzburg, Austria
| | - J Trubicka
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
| | - T Szymańska-Dębińska
- Department of Pathology, The Children's Memorial Health Institute, Warsaw, Poland
| | - M Pronicki
- Department of Pathology, The Children's Memorial Health Institute, Warsaw, Poland
| | - M Pajdowska
- Department of Biochemistry and Experimental Medicine, The Children's Memorial Health Institute, Warsaw, Poland
| | - M Dudzińska
- Department of Child Neurology, Chorzowskie Centrum Pediatrii i Onkologii, Chorzów, Poland
| | - M Giżewska
- Department of Pediatrics, Endocrinology, Diabetology, Metabolic Diseases and Cardiology, Pomeranian Medical University, Szczecin, Poland
| | - M Krajewska-Walasek
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
| | - J Książyk
- Department of Pediatrics, Nutrition and Metabolic Diseases, The Children's Memorial Health Institute, Warsaw, Poland
| | - W Sperl
- Department of Pediatrics, Paracelsus Medical University, Salzburg, Austria
| | - R Płoski
- Department of Medical Genetics, Warsaw Medical University, Warsaw, Poland
| | - E Pronicka
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland; Department of Pediatrics, Nutrition and Metabolic Diseases, The Children's Memorial Health Institute, Warsaw, Poland
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Krajewska-Walasek M, Jurkiewicz D, Piekutowska-Abramczuk D, Kucharczyk M, Chrzanowska KH, Jezela-Stanek A, Ciara E. Additional data on the clinical phenotype of Helsmoortel-Van der Aa syndrome associated with a novel truncating mutation in ADNP gene. Am J Med Genet A 2016; 170:1647-50. [PMID: 27031564 DOI: 10.1002/ajmg.a.37641] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 03/07/2016] [Indexed: 11/11/2022]
Affiliation(s)
| | - Dorota Jurkiewicz
- Department of Medical Genetics, Children's Memorial Health Institute, Warsaw, Poland
| | | | - Marzena Kucharczyk
- Department of Medical Genetics, Children's Memorial Health Institute, Warsaw, Poland
| | | | | | - Elżbieta Ciara
- Department of Medical Genetics, Children's Memorial Health Institute, Warsaw, Poland
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18
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Blachowska E, Petriczko E, Horodnicka-Józwa A, Skórka A, Pelc M, Krajewska-Walasek M, Walczak M. Recombinant growth hormone therapy in a girl with Costello syndrome: a 4-year observation. Ital J Pediatr 2016; 42:10. [PMID: 26812928 PMCID: PMC4729164 DOI: 10.1186/s13052-015-0209-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 12/10/2015] [Indexed: 11/17/2022] Open
Abstract
Background Costello syndrome is a rare syndrome of multiple congenital anomalies. The typical clinical traits include dysmorphic craniofacial features, skin hyperpigmentation and excess, feeding difficulties leading to severe postnatal growth retardation, short stature, joint hypermobility, and delayed psychomotor development. Additionally, Costello syndrome may present with an increased incidence of congenital heart disease, hypertrophic cardiomyopathy, and increased risk of both benign and malignant tumors. Furthermore, cases of patients with endocrine disorders such as adrenal insufficiency and endogenous growth hormone deficiency have also been documented. Case presentation We present a patient with Costello syndrome who has been successfully treated with recombinant human growth hormone (rhGH) for almost 4 years. Conclusions The possibility of growth hormone (GH) treatment can be considered in cases of documented GH deficiency in patients with Costello syndrome, but only under close oncologic and cardiologic supervision.
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Affiliation(s)
- Ewa Blachowska
- Department of Pediatrics, Endocrinology, Diabetology, Metabolic Diseases and Cardiology of the Developmental Age, Pomeranian Medical University in Szczecin, Ulica Unii Lubelskiej 1, 71-252, Szczecin, Poland.
| | - Elżbieta Petriczko
- Department of Pediatrics, Endocrinology, Diabetology, Metabolic Diseases and Cardiology of the Developmental Age, Pomeranian Medical University in Szczecin, Ulica Unii Lubelskiej 1, 71-252, Szczecin, Poland.
| | - Anita Horodnicka-Józwa
- Department of Pediatrics, Endocrinology, Diabetology, Metabolic Diseases and Cardiology of the Developmental Age, Pomeranian Medical University in Szczecin, Ulica Unii Lubelskiej 1, 71-252, Szczecin, Poland.
| | - Agata Skórka
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland. .,Department of Pediatrics, Medical University of Warsaw, Warsaw, Poland.
| | - Magdalena Pelc
- Department of Medical Genetics, The Children's Memorial Health Institute, Warsaw, Poland.
| | | | - Mieczysław Walczak
- Department of Pediatrics, Endocrinology, Diabetology, Metabolic Diseases and Cardiology of the Developmental Age, Pomeranian Medical University in Szczecin, Ulica Unii Lubelskiej 1, 71-252, Szczecin, Poland.
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Pelc M, Ciara E, Jezela-Stanek A, Krajewska-Walasek M. PHENOTYPIC CONSEQUENCES AND THE MALIGNANCY RISK IN FAMILIAL NOONAN SYNDROME DUE TO A RARE P.S427G RAF1 MUTATION. Genet Couns 2016; 27:325-333. [PMID: 30204961] [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: 06/08/2023]
Abstract
Mutations leading to dysregulation of the Ras/MAPK signal transduction cascade are a common cause of Noonan syndrome (NS) and play a key role in the pathogenesis of many human malignancies. To date, about 24 various RAF1 germline mutations were identified in NS. The incidence of malignancies in NS patients with RAF1 mutations has not been reported so far. However, in a few cases somatic RAF1 mutations were observed in cancer, including two described in therapy-related acute myeloid leukaemia (t-AML). We present a case of an adult female patient with Noonan syndrome and her affected mother with a rare RAF] germline mutation c.1279A>G (p.S427G), located within the highly conserved domain (CR3) of serine/threonine kinase C-RAF. Interestingly, this mutation has been reported for the first time in a patient with t-AML as a somatic change and so far has been identified in only one individual with NS phenotype and his mother. Our report presents the second familial case of Noonan syndrome due to a germline p.S427G substitution in RAF] with no occurrence of a malignant tumor. It may suggest that carrying a germline mutation in the RAF1 oncogene is not associated with an increased risk of tumor development. Since RAF1 mutations have been observed as a somatic event in many types of cancer, this report might be of importance for the genetic counselling and management of patients both with germline and somatic alterations in this gene.
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Jezela-Stanek A, Małunowicz E, Anna S, Kucharczyk M, Goryluk-Kozakiewicz B, Sodowska H, Krajewska-Walasek M. Trends in prenatal diagnosis of non-specific multiple malformations disorders with reference to the own experience and research study on Smith-Lemli-Opitz syndrome. Ginekol Pol 2015; 86:598-602. [PMID: 26492708 DOI: 10.17772/gp/57851] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
AIM OF THE STUDY Biochemical diagnosis of fetuses with multiple malformations--an attempt to determine the frequency of prenatal Smith-Lemli-Opitz syndrome. Discussion on trends in prenatal diagnosis of non-specific multiple malformations disorders. MATERIAL AND METHODS A total of 117 fetal samples were obtained. They were analyzed with gas chromatography/mass spectrometry (GC/MS) method to assess the concentration of 7-dehydrocholesterol (7DHC) and 8-dehydrocholesterol (8DHC) in amniotic fluid samples and (or) to establish 7-dehydroestriol/estriol and 8-dehydropregnanetriol/pregnanetrio ratios in maternal urine. RESULTS In 4 cases Smith-Lemll-Opitz syndrome was confirmed. CONCLUSIONS Biochemical GC/MS sterol analyses of amniotic fluid or maternal urinary metabolites toward Smith- Lemli-Opitz syndrome, as cheap tests, should be performed in all pregnancies with suggestive ultrasound features (holoprosencephaly and(or) atrioventricular canal and(or) genital anomalies), especially when nuchal translucency is increased >3 mm, and after exclusion of chromosomal aberration in routine karyotyping or even arrayCGH.
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Piekutowska-Abramczuk D, Kocyła-Karczmarewicz B, Małkowska M, Łuczak S, Iwanicka-Pronicka K, Siegmund S, Yang H, Wen Q, Hoang QV, Silverman RH, Kowalski P, Szczypińska O, Czornak K, Zimowski J, Płoski R, Pilch J, Ciara E, Zaremba J, Krajewska-Walasek M, Schon EA, Pronicka E. No Evidence for Association of SCO2 Heterozygosity with High-Grade Myopia or Other Diseases with Possible Mitochondrial Dysfunction. JIMD Rep 2015; 27:63-8. [PMID: 26427993 DOI: 10.1007/8904_2015_468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 05/14/2015] [Accepted: 05/26/2015] [Indexed: 03/05/2023] Open
Abstract
SCO2 mutations cause recessively inherited cytochrome c oxidase deficiency. Recently Tran-Viet et al. proposed that heterozygosity for pathogenic SCO2 variants, including the common E140K variant, causes high-grade myopia. To investigate the association of SCO2 mutations with myopia, ophthalmic examinations were performed on 35 E140K carriers, one homozygous infant, and on a mouse model of Sco2 deficiency. Additionally, a screen for other putative effects of SCO2 heterozygosity was carried out by comparing the prevalence of the common E140K variant in a population of patients with undiagnosed diseases compatible with SCO2-related pathogenesis to that in a general population sample. High-grade myopia was not identified in any of the studied individuals. Of the carriers, 17 were emmetropic, and 18 possessed refractive errors. Additionally, no significant axial elongation indicative of high-grade myopia was found in mice carrying E129K (corresponding to E140K in humans) knock-in mutations. The prevalence of E140K carriers in the symptomatic cohort was evaluated as 1:103 (CI: 0.44-2.09) and did not differ significantly from the population prevalence (1:147, CI: 0.45-1.04).Our study demonstrates that heterozygosity for pathogenic SCO2 variants is not associated with high-grade myopia in either human patients or in mice.
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Affiliation(s)
| | | | - Maja Małkowska
- Department of Medical Genetics, The Children's Memorial Health Institute, 04-730, Warsaw, Poland
| | - Sylwia Łuczak
- Department of Medical Genetics, The Children's Memorial Health Institute, 04-730, Warsaw, Poland
| | | | - Stephanie Siegmund
- Department of Neurology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Hua Yang
- Department of Neurology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Quan Wen
- Department of Ophthalmology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Quan V Hoang
- Department of Ophthalmology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Ronald H Silverman
- Department of Ophthalmology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Paweł Kowalski
- Department of Medical Genetics, The Children's Memorial Health Institute, 04-730, Warsaw, Poland
| | - Olga Szczypińska
- Department of Medical Genetics, The Children's Memorial Health Institute, 04-730, Warsaw, Poland
| | - Kamila Czornak
- Department of Medical Genetics, The Children's Memorial Health Institute, 04-730, Warsaw, Poland
| | - Janusz Zimowski
- Department of Genetics, Institute of Psychiatry and Neurology, 02-957, Warsaw, Poland
| | - Rafał Płoski
- Department of Medical Genetics, Medical University of Warsaw, 02-106, Warsaw, Poland
| | - Jacek Pilch
- Department of Child Neurology, Medical University of Silesia, 0-055, Katowice, Poland
| | - Elżbieta Ciara
- Department of Medical Genetics, The Children's Memorial Health Institute, 04-730, Warsaw, Poland
| | - Jacek Zaremba
- Department of Genetics, Institute of Psychiatry and Neurology, 02-957, Warsaw, Poland
| | | | - Eric A Schon
- Department of Neurology, Columbia University Medical Center, New York, NY, 10032, USA.,Department of Genetics and Development, Columbia University Medical Center, New York, NY, 10032, USA
| | - Ewa Pronicka
- Department of Medical Genetics, The Children's Memorial Health Institute, 04-730, Warsaw, Poland. .,Department of Pediatrics, Nutrition and Metabolic Diseases, The Children's Memorial Health Institute, 04-730, Warsaw, Poland.
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22
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Jezela-Stanek A, Karczmarewicz D, Chrzanowska KH, Krajewska-Walasek M. Polish activity within Orphanet Europe--state of art of database and services. Dev Period Med 2015; 19:536-541. [PMID: 26982769] [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: 06/05/2023]
Abstract
Orphanet is an international project aiming to help in improvement the diagnostic process, care and treatment of patients with rare diseases, and to provide information on development in research and new therapy. Orphanet is currently represented in 38 countries. The infrastructure and coordination activities are jointly funded by Inserm, the French Directorate General for Health, and the European Commission. Moreover, certain services are specially funded by other partners. Orphanet's activities in each country of the network are partially financed by national institutions and(or) specific contracts. In this paper we present the Orphanet portal as well as the Polish national activity within this project.
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Affiliation(s)
- Aleksandra Jezela-Stanek
- Department of Medical Genetics, The Children's Memorial Health Institute, Aleja Dzieci Polskich 20, 04-730 Warszawa, tel. (22) 815-74-52, e-mail:
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23
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Jurkiewicz D, Kugaudo M, Tańska A, Wawrzkiewicz-Witkowska A, Tomaszewska A, Kucharczyk M, Cieślikowska A, Ciara E, Krajewska-Walasek M. 11p15 duplication and 13q34 deletion with Beckwith-Wiedemann syndrome and factor VII deficiency. Pediatr Int 2015; 57:486-91. [PMID: 26012727 DOI: 10.1111/ped.12611] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 09/25/2014] [Accepted: 10/08/2014] [Indexed: 11/30/2022]
Abstract
Here we report a patient with 11p15.4p15.5 duplication and 13q34 deletion presenting with Beckwith-Wiedemann syndrome (BWS) and moderate deficiency of factor VII (FVII). The duplication was initially diagnosed on methylation-sensitive multiplex ligation-dependent probe amplification. Array comparative genome hybridization confirmed its presence and indicated a 13q34 distal deletion. The patient's clinical symptoms, including developmental delay and facial dysmorphism, were typical of BWS with paternal 11p15 trisomy. Partial 13q monosomy in this patient is associated with moderate deficiency of FVII and may also overlap with a few symptoms of paternal 11p15 trisomy such as developmental delay and some facial features. To our knowledge this is the first report of 11p15.4p15.5 duplication associated with deletion of 13q34 and FVII deficiency. Moreover, this report emphasizes the importance of detailed clinical as well as molecular examinations in patients with BWS features and developmental delay.
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Affiliation(s)
- Dorota Jurkiewicz
- Department of Medical Genetics, Children's Memorial Health Institute, Warsaw, Poland
| | - Monika Kugaudo
- Department of Medical Genetics, Children's Memorial Health Institute, Warsaw, Poland.,Department of Child and Adolescent Psychiatry, Medical University of Warsaw, Warsaw, Poland
| | - Anna Tańska
- Department of Medical Genetics, Children's Memorial Health Institute, Warsaw, Poland
| | | | - Agnieszka Tomaszewska
- Prenatal Diagnostic and Genetic Clinic, Medical University of Silesia, Zabrze, Poland
| | - Marzena Kucharczyk
- Department of Medical Genetics, Children's Memorial Health Institute, Warsaw, Poland
| | - Agata Cieślikowska
- Department of Medical Genetics, Children's Memorial Health Institute, Warsaw, Poland
| | - Elżbieta Ciara
- Department of Medical Genetics, Children's Memorial Health Institute, Warsaw, Poland
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24
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Recker F, Zaniew M, Böckenhauer D, Miglietti N, Bökenkamp A, Moczulska A, Rogowska-Kalisz A, Laube G, Said-Conti V, Kasap-Demir B, Niemirska A, Litwin M, Siteń G, Chrzanowska KH, Krajewska-Walasek M, Sethi SK, Tasic V, Anglani F, Addis M, Wasilewska A, Szczepańska M, Pawlaczyk K, Sikora P, Ludwig M. Characterization of 28 novel patients expands the mutational and phenotypic spectrum of Lowe syndrome. Pediatr Nephrol 2015; 30:931-43. [PMID: 25480730 DOI: 10.1007/s00467-014-3013-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 11/07/2014] [Accepted: 11/11/2014] [Indexed: 12/18/2022]
Abstract
BACKGROUND The oculocerebrorenal syndrome of Lowe (OCRL) is a rare X-linked multi-systemic disorder, almost always characterized by the triad of congenital cataract, cognitive and behavioral impairment and a proximal tubulopathy. METHODS Twenty-eight novel patients with suspected Lowe syndrome were studied. RESULTS All patients carried OCRL gene defects with mutational hot spots at CpG dinucleotides. Mutations previously unknown in Lowe syndrome were observed in ten of the 28 patients, and carriership was identified in 30.4 % of the mothers investigated. Mapping the exact breakpoints of a complete OCRL gene deletion revealed involvement of several flanking repeat elements. We noted a similar pattern of documented clinically relevant symptoms, and even though the patient cohort comprised relatively young patients, 32 % of these patients already showed advanced chronic kidney disease. Thrombocytopenia was seen in several patients, and hyperosmia and/or hyperacusis were reported recurrently. A p.Asp523Asn mutation in a Polish patient, associated with the typical cerebrorenal spectrum but with late cataract (10 year), was also evident in two milder affected Italian brothers with ocular involvement of similar progression. CONCLUSIONS We have identified clinical features in 28 patients with suspected Lowe syndrome that had not been recognized in Lowe syndrome prior to our study. We also provide further evidence that OCRL mutations cause a phenotypic continuum with selective and/or time-dependent organ involvement. At least some of these mutants might exhibit a genotype-phenotype correlation.
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Affiliation(s)
- Florian Recker
- Department of Clinical Chemistry and Clinical Pharmacology, University of Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Germany
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25
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Tylki-Szymańska A, Acuna-Hidalgo R, Krajewska-Walasek M, Lecka-Ambroziak A, Steehouwer M, Gilissen C, Brunner HG, Jurecka A, Różdżyńska-Świątkowska A, Hoischen A, Chrzanowska KH. Thyroid hormone resistance syndrome due to mutations in the thyroid hormone receptor α gene (THRA). J Med Genet 2015; 52:312-6. [PMID: 25670821 DOI: 10.1136/jmedgenet-2014-102936] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [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: 12/11/2014] [Accepted: 01/20/2015] [Indexed: 01/15/2023]
Abstract
BACKGROUND Resistance to thyroid hormone is characterised by a lack of response of peripheral tissues to the active form of thyroid hormone (triiodothyronine, T3). In about 85% of cases, a mutation in THRB, the gene coding for thyroid receptor β (TRβ), is the cause of this disorder. Recently, individual reports described the first patients with thyroid hormone receptor α gene (THRA) defects. METHODS We used longitudinal clinical assessments over a period of 18 years at one hospital setting combined with biochemical and molecular studies to characterise a novel thyroid hormone resistance syndrome in a cohort of six patients from five families. FINDINGS Using whole exome sequencing and subsequent Sanger sequencing, we identified truncating and missense mutations in the THRA gene in five of six individuals and describe a distinct and consistent phenotype of mild hypothyroidism (growth retardation, relatively high birth length and weight, mild-to-moderate mental retardation, mild skeletal dysplasia and constipation), specific facial features (round, somewhat coarse and flat face) and macrocephaly. Laboratory investigations revealed anaemia and slightly elevated cholesterol, while the thyroid profile showed low free thyroxine (fT4) levels coupled with high free T3 (fT3), leading to an altered T4 : T3 ratio, along with normal thyroid-stimulating hormone levels. We observed a genotype-phenotype correlation, with milder outcomes for missense mutations and more severe phenotypical effects for truncating mutations. INTERPRETATION THRA mutations may be more common than expected. In patients with clinical symptoms of mild hypothyreosis without confirmation in endocrine studies, a molecular study of THRA defects is strongly recommended.
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Affiliation(s)
- Anna Tylki-Szymańska
- Department of Pediatrics, Nutrition and Metabolic Diseases, The Children's Memorial Health Institute, Warsaw, Poland
| | - Rocio Acuna-Hidalgo
- Department of Human Genetics, Radboud University Medical Center, Radboud Institute of Molecular Life Sciences, Nijmegen, The Netherlands
| | | | - Agnieszka Lecka-Ambroziak
- Department of Endocrinology and Diabetology, The Children's Memorial Health Institute, Warsaw, Poland
| | - Marloes Steehouwer
- Department of Human Genetics, Radboud University Medical Center, Radboud Institute of Molecular Life Sciences, Nijmegen, The Netherlands
| | - Christian Gilissen
- Department of Human Genetics, Radboud University Medical Center, Radboud Institute of Molecular Life Sciences, Nijmegen, The Netherlands
| | - Han G Brunner
- Department of Human Genetics, Radboud University Medical Center, Radboud Institute of Molecular Life Sciences, Nijmegen, The Netherlands
| | - Agnieszka Jurecka
- Department of Pediatrics, Nutrition and Metabolic Diseases, The Children's Memorial Health Institute, Warsaw, Poland
| | | | - Alexander Hoischen
- Department of Human Genetics, Radboud University Medical Center, Radboud Institute of Molecular Life Sciences, Nijmegen, The Netherlands
| | - Krystyna H Chrzanowska
- Department of Clinical Genetics, The Children's Memorial Health Institute, Warsaw, Poland
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26
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Krajewska-Walasek M, Kugaudo M, Jędrzejowska M, Cieślikowska A, Ichkou A, Attié-Bitach T, Jezela-Stanek A. MOLAR TOOTH SIGN AND ACROCALLOSAL SYNDROME--A REPORT ON A POLISH FAMILY AND REVIEW OF KIF7 SYNDROMOLOGY. Genet Couns 2015; 26:171-179. [PMID: 26349186] [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: 06/05/2023]
Abstract
Acrocallosal syndrome is a multiple congenital anomaly disorder characterized by postaxial and/or preaxial polydactyly, cutaneous syndactyly, macrocephaly, widely spaced eyes, absence or hypoplasia of the corpus callosum, and intellectual disability. It was first described by Albert Schinzel as early as in 1979, but the diagnosis of this syndrome still remains challenging. Here we report a family with 2 sibs with acrocallosal syndrome caused by novel mutations in KIF7. They present with features like molar tooth sign and hyperventilation that are not very typical in ACLS, but do occur in other ciliopathies, hence we also discuss the clinical heterogeneity of KIF7-associated disorders.
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27
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Jezela-Stanek A, Krajewska-Walasek M. Noninvasive prenatal testing of aneuploidies: where are we now? Rev Bras Ginecol Obstet 2014; 36:383-386. [PMID: 25272358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2014] [Accepted: 08/22/2014] [Indexed: 06/03/2023] Open
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28
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Kucharczyk M, Kochański A, Jezela-Stanek A, Kugaudo M, Sielska-Rotblum D, Gutkowska A, Krajewska-Walasek M. The first case of a patient with de novo partial distal 16q tetrasomy and a data's review. Am J Med Genet A 2014; 164A:2541-50. [DOI: 10.1002/ajmg.a.36686] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Accepted: 06/17/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Marzena Kucharczyk
- Department of Medical Genetics; The Children's Memorial Health Institute; Warsaw Poland
| | - Andrzej Kochański
- Department of Medical Genetics; The Children's Memorial Health Institute; Warsaw Poland
- Neuromuscular Unit; Mossakowski Medical Research Centre; Polish Academy of Sciences; Warsaw Poland
| | | | - Monika Kugaudo
- Department of Medical Genetics; The Children's Memorial Health Institute; Warsaw Poland
- Department of Child and Adolescent Psychiatry; Medical University of Warsaw; Warsaw Poland
| | | | - Anna Gutkowska
- Department of Medical Genetics; The Children's Memorial Health Institute; Warsaw Poland
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29
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Vaidyanathan G, Gururangan S, Bigner D, Zalutsky M, Morfouace M, Shelat A, Megan J, Freeman BB, Robinson S, Throm S, Olson JM, Li XN, Guy KR, Robinson G, Stewart C, Gajjar A, Roussel M, Sirachainan N, Pakakasama S, Anurathapan U, Hansasuta A, Dhanachai M, Khongkhatithum C, Hongeng S, Feroze A, Lee KS, Gholamin S, Wu Z, Lu B, Mitra S, Cheshier S, Northcott P, Lee C, Zichner T, Lichter P, Korbel J, Wechsler-Reya R, Pfister S, Project IPT, Li KKW, Xia T, Ma FMT, Zhang R, Zhou L, Lau KM, Ng HK, Lafay-Cousin L, Chi S, Madden J, Smith A, Wells E, Owens E, Strother D, Foreman N, Packer R, Bouffet E, Wataya T, Peacock J, Taylor MD, Ivanov D, Garnett M, Parker T, Alexander C, Meijer L, Grundy R, Gellert P, Ashford M, Walker D, Brent J, Cader FZ, Ford D, Kay A, Walsh R, Solanki G, Peet A, English M, Shalaby T, Fiaschetti G, Baulande S, Gerber N, Baumgartner M, Grotzer M, Hayase T, Kawahara Y, Yagi M, Minami T, Kanai N, Yamaguchi T, Gomi A, Morimoto A, Hill R, Kuijper S, Lindsey J, Schwalbe E, Barker K, Boult J, Williamson D, Ahmad Z, Hallsworth A, Ryan S, Poon E, Robinson S, Ruddle R, Raynaud F, Howell L, Kwok C, Joshi A, Nicholson SL, Crosier S, Wharton S, Robson K, Michalski A, Hargrave D, Jacques T, Pizer B, Bailey S, Swartling F, Petrie K, Weiss W, Chesler L, Clifford S, Kitanovski L, Prelog T, Kotnik BF, Debeljak M, Fiaschetti G, Shalaby T, Baumgartner M, Grotzer MA, Gevorgian A, Morozova E, Kazantsev I, Iukhta T, Safonova S, Kumirova E, Punanov Y, Afanasyev B, Zheludkova O, Grajkowska W, Pronicki M, Cukrowska B, Dembowska-Baginska B, Lastowska M, Murase A, Nobusawa S, Gemma Y, Yamazaki F, Masuzawa A, Uno T, Osumi T, Shioda Y, Kiyotani C, Mori T, Matsumoto K, Ogiwara H, Morota N, Hirato J, Nakazawa A, Terashima K, Fay-McClymont T, Walsh K, Mabbott D, Smith A, Wells E, Madden J, Chi S, Owens E, Strother D, Packer R, Foreman N, Bouffet E, Lafay-Cousin L, Sturm D, Northcott PA, Jones DTW, Korshunov A, Lichter P, Pfister SM, Kool M, Hooper C, Hawes S, Kees U, Gottardo N, Dallas P, Siegfried A, Bertozzi AI, Sevely A, Loukh N, Munzer C, Miquel C, Bourdeaut F, Pietsch T, Dufour C, Delisle MB, Kawauchi D, Rehg J, Finkelstein D, Zindy F, Phoenix T, Gilbertson R, Pfister S, Roussel M, Trubicka J, Borucka-Mankiewicz M, Ciara E, Chrzanowska K, Perek-Polnik M, Abramczuk-Piekutowska D, Grajkowska W, Jurkiewicz D, Luczak S, Kowalski P, Krajewska-Walasek M, Lastowska M, Sheila C, Lee S, Foster C, Manoranjan B, Pambit M, Berns R, Fotovati A, Venugopal C, O'Halloran K, Narendran A, Hawkins C, Ramaswamy V, Bouffet E, Taylor M, Singhal A, Hukin J, Rassekh R, Yip S, Northcott P, Singh S, Duhman C, Dunn S, Chen T, Rush S, Fuji H, Ishida Y, Onoe T, Kanda T, Kase Y, Yamashita H, Murayama S, Nakasu Y, Kurimoto T, Kondo A, Sakaguchi S, Fujimura J, Saito M, Arakawa T, Arai H, Shimizu T, Lastowska M, Jurkiewicz E, Daszkiewicz P, Drogosiewicz M, Trubicka J, Grajkowska W, Pronicki M, Kool M, Sturm D, Jones DTW, Hovestadt V, Buchhalter I, Jager NN, Stuetz A, Johann P, Schmidt C, Ryzhova M, Landgraf P, Hasselblatt M, Schuller U, Yaspo ML, von Deimling A, Korbel J, Eils R, Lichter P, Korshunov A, Pfister S, Modi A, Patel M, Berk M, Wang LX, Plautz G, Camara-Costa H, Resch A, Lalande C, Kieffer V, Poggi G, Kennedy C, Bull K, Calaminus G, Grill J, Doz F, Rutkowski S, Massimino M, Kortmann RD, Lannering B, Dellatolas G, Chevignard M, Lindsey J, Kawauchi D, Schwalbe E, Solecki D, McKinnon P, Olson J, Hayden J, Grundy R, Ellison D, Williamson D, Bailey S, Roussel M, Clifford S, Buss M, Remke M, Lee J, Caspary T, Taylor M, Castellino R, Lannering B, Sabel M, Gustafsson G, Fleischhack G, Benesch M, Doz F, Kortmann RD, Massimino M, Navajas A, Reddingius R, Rutkowski S, Miquel C, Delisle MB, Dufour C, Lafon D, Sevenet N, Pierron G, Delattre O, Bourdeaut F, Ecker J, Oehme I, Mazitschek R, Korshunov A, Kool M, Lodrini M, Deubzer HE, von Deimling A, Kulozik AE, Pfister SM, Witt O, Milde T, Phoenix T, Patmore D, Boulos N, Wright K, Boop S, Gilbertson R, Janicki T, Burzynski S, Burzynski G, Marszalek A, Triscott J, Green M, Foster C, Fotovati A, Berns R, O'Halloran K, Singhal A, Hukin J, Rassekh SR, Yip S, Toyota B, Dunham C, Dunn SE, Liu KW, Pei Y, Wechsler-Reya R, Genovesi L, Ji P, Davis M, Ng CG, Remke M, Taylor M, Cho YJ, Jenkins N, Copeland N, Wainwright B, Tang Y, Schubert S, Nguyen B, Masoud S, Gholamin S, Lee A, Willardson M, Bandopadhayay P, Bergthold G, Atwood S, Whitson R, Cheshier S, Qi J, Beroukhim R, Tang J, Wechsler-Reya R, Oro A, Link B, Bradner J, Cho YJ, Vallero SG, Bertin D, Basso ME, Milanaccio C, Peretta P, Cama A, Mussano A, Barra S, Morana G, Morra I, Nozza P, Fagioli F, Garre ML, Darabi A, Sanden E, Visse E, Stahl N, Siesjo P, Cho YJ, Vaka D, Schubert S, Vasquez F, Weir B, Cowley G, Keller C, Hahn W, Gibbs IC, Partap S, Yeom K, Martinez M, Vogel H, Donaldson SS, Fisher P, Perreault S, Cho YJ, Guerrini-Rousseau L, Dufour C, Pujet S, Kieffer-Renaux V, Raquin MA, Varlet P, Longaud A, Sainte-Rose C, Valteau-Couanet D, Grill J, Staal J, Lau LS, Zhang H, Ingram WJ, Cho YJ, Hathout Y, Brown K, Rood BR, Sanden E, Visse E, Stahl N, Siesjo P, Darabi A, Handler M, Hankinson T, Madden J, Kleinschmidt-Demasters BK, Foreman N, Hutter S, Northcott PA, Kool M, Pfister S, Kawauchi D, Jones DT, Kagawa N, Hirayama R, Kijima N, Chiba Y, Kinoshita M, Takano K, Eino D, Fukuya S, Yamamoto F, Nakanishi K, Hashimoto N, Hashii Y, Hara J, Taylor MD, Yoshimine T, Wang J, Guo C, Yang Q, Chen Z, Perek-Polnik M, Lastowska M, Drogosiewicz M, Dembowska-Baginska B, Grajkowska W, Filipek I, Swieszkowska E, Tarasinska M, Perek D, Kebudi R, Koc B, Gorgun O, Agaoglu FY, Wolff J, Darendeliler E, Schmidt C, Kerl K, Gronych J, Kawauchi D, Lichter P, Schuller U, Pfister S, Kool M, McGlade J, Endersby R, Hii H, Johns T, Gottardo N, Sastry J, Murphy D, Ronghe M, Cunningham C, Cowie F, Jones R, Sastry J, Calisto A, Sangra M, Mathieson C, Brown J, Phuakpet K, Larouche V, Hawkins C, Bartels U, Bouffet E, Ishida T, Hasegawa D, Miyata K, Ochi S, Saito A, Kozaki A, Yanai T, Kawasaki K, Yamamoto K, Kawamura A, Nagashima T, Akasaka Y, Soejima T, Yoshida M, Kosaka Y, Rutkowski S, von Bueren A, Goschzik T, Kortmann R, von Hoff K, Friedrich C, Muehlen AZ, Gerber N, Warmuth-Metz M, Soerensen N, Deinlein F, Benesch M, Zwiener I, Faldum A, Kuehl J, Pietsch T, KRAMER K, -Taskar NP, Zanzonico P, Humm JL, Wolden SL, Cheung NKV, Venkataraman S, Alimova I, Harris P, Birks D, Balakrishnan I, Griesinger A, Remke M, Taylor MD, Handler M, Foreman NK, Vibhakar R, Margol A, Robison N, Gnanachandran J, Hung L, Kennedy R, Vali M, Dhall G, Finlay J, Erdrich-Epstein A, Krieger M, Drissi R, Fouladi M, Gilles F, Judkins A, Sposto R, Asgharzadeh S, Peyrl A, Chocholous M, Holm S, Grillner P, Blomgren K, Azizi A, Czech T, Gustafsson B, Dieckmann K, Leiss U, Slavc I, Babelyan S, Dolgopolov I, Pimenov R, Mentkevich G, Gorelishev S, Laskov M, Friedrich C, Warmuth-Metz M, von Bueren AO, Nowak J, von Hoff K, Pietsch T, Kortmann RD, Rutkowski S, Mynarek M, von Hoff K, Muller K, Friedrich C, von Bueren AO, Gerber NU, Benesch M, Pietsch T, Warmuth-Metz M, Ottensmeier H, Kwiecien R, Faldum A, Kuehl J, Kortmann RD, Rutkowski S, Mynarek M, von Hoff K, Muller K, Friedrich C, von Bueren AO, Gerber NU, Benesch M, Pietsch T, Warmuth-Metz M, Ottensmeier H, Kwiecien R, Faldum A, Kuehl J, Kortmann RD, Rutkowski S, Yankelevich M, Laskov M, Boyarshinov V, Glekov I, Pimenov R, Ozerov S, Gorelyshev S, Popa A, Dolgopolov I, Subbotina N, Mentkevich G, Martin AM, Nirschl C, Polanczyk M, Bell R, Martinez D, Sullivan LM, Santi M, Burger PC, Taube JM, Drake CG, Pardoll DM, Lim M, Li L, Wang WG, Pu JX, Sun HD, Remke M, Taylor MD, Ruggieri R, Symons MH, Vanan MI, Bandopadhayay P, Bergthold G, Nguyen B, Schubert S, Gholamin S, Tang Y, Bolin S, Schumacher S, Zeid R, Masoud S, Yu F, Vue N, Gibson W, Paolella B, Mitra S, Cheshier S, Qi J, Liu KW, Wechsler-Reya R, Weiss W, Swartling FJ, Kieran MW, Bradner JE, Beroukhim R, Cho YJ, Maher O, Khatua S, Tarek N, Zaky W, Gupta T, Mohanty S, Kannan S, Jalali R, Kapitza E, Denkhaus D, Muhlen AZ, Rutkowski S, Pietsch T, von Hoff K, Pizer B, Dufour C, van Vuurden DG, Garami M, Massimino M, Fangusaro J, Davidson TB, da Costa MJG, Sterba J, Benesch M, Gerber NU, Mynarek M, Kwiecien R, Clifford SC, Kool M, Pietsch T, Finlay JL, Rutkowski S, Pietsch T, Schmidt R, Remke M, Korshunov A, Hovestadt V, Jones DT, Felsberg J, Goschzik T, Kool M, Northcott PA, von Hoff K, von Bueren A, Skladny H, Taylor M, Cremer F, Lichter P, Faldum A, Reifenberger G, Rutkowski S, Pfister S, Kunder R, Jalali R, Sridhar E, Moiyadi AA, Goel A, Goel N, Shirsat N, Othman R, Storer L, Korshunov A, Pfister SM, Kerr I, Coyle B, Law N, Smith ML, Greenberg M, Bouffet E, Taylor MD, Laughlin S, Malkin D, Liu F, Moxon-Emre I, Scantlebury N, Mabbott D, Nasir A, Othman R, Storer L, Onion D, Lourdusamy A, Grabowska A, Coyle B, Cai Y, Othman R, Bradshaw T, Coyle B, de Medeiros RSS, Beaugrand A, Soares S, Epelman S, Jones DTW, Hovestadt V, Wang W, Northcott PA, Kool M, Sultan M, Landgraf P, Reifenberger G, Eils R, Yaspo ML, Wechsler-Reya RJ, Korshunov A, Zapatka M, Radlwimmer B, Pfister SM, Lichter P, Alderete D, Baroni L, Lubinieki F, Auad F, Gonzalez ML, Puya W, Pacheco P, Aurtenetxe O, Gaffar A, Gros L, Cruz O, Calvo C, Navajas A, Shinojima N, Nakamura H, Kuratsu JI, Hanaford A, Eberhart C, Archer T, Tamayo P, Pomeroy S, Raabe E, De Braganca K, Gilheeney S, Khakoo Y, Kramer K, Wolden S, Dunkel I, Lulla RR, Laskowski J, Fangusaro J, Goldman S, Gopalakrishnan V, Ramaswamy V, Remke M, Shih D, Wang X, Northcott P, Faria C, Raybaud C, Tabori U, Hawkins C, Rutka J, Taylor M, Bouffet E, Jacobs S, De Vathaire F, Diallo I, Llanas D, Verez C, Diop F, Kahlouche A, Grill J, Puget S, Valteau-Couanet D, Dufour C, Ramaswamy V, Thompson E, Taylor M, Pomeroy S, Archer T, Northcott P, Tamayo P, Prince E, Amani V, Griesinger A, Foreman N, Vibhakar R, Sin-Chan P, Lu M, Kleinman C, Spence T, Picard D, Ho KC, Chan J, Hawkins C, Majewski J, Jabado N, Dirks P, Huang A, Madden JR, Foreman NK, Donson AM, Mirsky DM, Wang X, Dubuc A, Korshunov A, Ramaswamy V, Remke M, Mack S, Gendoo D, Peacock J, Luu B, Cho YJ, Eberhart C, MacDonald T, Li XN, Van Meter T, Northcott P, Croul S, Bouffet E, Pfister S, Taylor M, Laureano A, Brugmann W, Denman C, Singh H, Huls H, Moyes J, Khatua S, Sandberg D, Silla L, Cooper L, Lee D, Gopalakrishnan V. MEDULLOBLASTOMA. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou074] [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: 11/14/2022] Open
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Jurkiewicz D, Gliwicz D, Ciara E, Gerfen J, Pelc M, Piekutowska-Abramczuk D, Kugaudo M, Chrzanowska K, Spinner NB, Krajewska-Walasek M. Spectrum of JAG1 gene mutations in Polish patients with Alagille syndrome. J Appl Genet 2014; 55:329-36. [PMID: 24748328 PMCID: PMC4102774 DOI: 10.1007/s13353-014-0212-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [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: 01/08/2014] [Revised: 03/19/2014] [Accepted: 03/27/2014] [Indexed: 11/29/2022]
Abstract
Alagille syndrome (ALGS) is an autosomal dominant disorder characterized by developmental abnormalities in several organs including the liver, heart, eyes, vertebrae, kidneys, and face. The majority (90-94 %) of ALGS cases are caused by mutations in the JAG1 (JAGGED1) gene, and in a small percent of patients (∼1 %) mutations in the NOTCH2 gene have been described. Both genes are involved in the Notch signaling pathway. To date, over 440 different JAG1 gene mutations and ten NOTCH2 mutations have been identified in ALGS patients. The present study was conducted on a group of 35 Polish ALGS patients and revealed JAG1 gene mutations in 26 of them. Twenty-three different mutations were detected including 13 novel point mutations and six large deletions affecting the JAG1 gene. Review of all mutations identified to date in individuals from Poland allowed us to propose an effective diagnostic strategy based on the mutations identified in the reported patients of Polish descent. However, the distribution of mutations seen in this cohort was not substantively different than the mutation distribution in other reported populations.
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Affiliation(s)
- Dorota Jurkiewicz
- Department of Medical Genetics, The Children's Memorial Health Institute, Al. Dzieci Polskich 20, 04-730, Warsaw, Poland,
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Pronicka E, Piekutowska-Abramczuk D, Szymańska-Dębińska T, Bielecka L, Kowalski P, Łuczak S, Karkucińska-Więckowska A, Migdał M, Kubalska J, Zimowski J, Jamroz E, Wierzba J, Sykut-Cegielska J, Pronicki M, Zaremba J, Krajewska-Walasek M. The natural history of SCO2 deficiency in 36 Polish children confirmed the genotype–phenotype correlation. Mitochondrion 2013; 13:810-6. [DOI: 10.1016/j.mito.2013.05.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2012] [Revised: 05/12/2013] [Accepted: 05/14/2013] [Indexed: 10/26/2022]
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Piekutowska-Abramczuk D, Pronicki M, Strawa K, Karkucińska-Więckowska A, Szymańska-Dębińska T, Fidziańska A, Więckowski M, Jurkiewicz D, Ciara E, Jankowska I, Sykut-Cegielska J, Krajewska-Walasek M, Płoski R, Pronicka E. Novel c.191C>G (p.Pro64Arg)MPV17mutation identified in two pairs of unrelated Polish siblings with mitochondrial hepatoencephalopathy. Clin Genet 2013; 85:573-7. [DOI: 10.1111/cge.12228] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 07/02/2013] [Accepted: 07/02/2013] [Indexed: 12/28/2022]
Affiliation(s)
| | - M. Pronicki
- Department of Pathology; The Children's Memorial Health Institute; Warsaw Poland
| | - K. Strawa
- Department of Medical Genetics; Medical University of Warsaw; Warsaw Poland
| | | | | | - A. Fidziańska
- Neuromuscular Unit, Mossakowski Research Medical Center; Polish Academy of Science; Warsaw Poland
| | - M.R. Więckowski
- Laboratory of Bioenergetics, Biomembranes and Metabolic Regulation, Department of Biochememistry; Nencki Institute of Experimental Biology; Warsaw Poland
| | | | | | | | - J. Sykut-Cegielska
- Department of Metabolic Diseases; The Children's Memorial Health Institute; Warsaw Poland
| | | | - R. Płoski
- Department of Medical Genetics; Medical University of Warsaw; Warsaw Poland
| | - E. Pronicka
- Department of Metabolic Diseases; The Children's Memorial Health Institute; Warsaw Poland
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Abstract
Syndromic craniosynostose exhibit variable clinical and genetic heterogeneity. Many of this disorders are caused by mutations in the fibroblast growth factor receptor genes: FGFR2, FGFR3 (encoding fibroblast growth factor receptors), TWIST1 (functions as an upstream regulator of FGFRs) and EFNB1 (gene encoding fibrillin1). However recent advances in molecular genetics have led to a discover of other genes implicated in different craniosynostosis syndromes.
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Affiliation(s)
- Aleksandra Jezela-Stanek
- Department of Medical Genetics, The Children's Memorial Health Institute, Aleja Dzieci Polskich 20, Warsaw, Poland.
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Bie L, Ju Y, Jin Z, Donovan L, Birks S, Grunewald L, Zmuda F, Pilkington G, Kaul A, Chen YH, Dahiya S, Emnett R, Gianino S, Gutmann D, Poschl J, Bianchi E, Bockstaller M, Neumann P, Schuller U, Gevorgian A, Morozova E, Kazantsev I, Iukhta T, Safonova S, Punanov Y, Zheludkova O, Afanasyev B, Buss M, Remke M, Gandhi K, Kool M, Northcott P, Pfister S, Taylor M, Castellino R, Thompson J, Margraf L, Donahue D, Head H, Murray J, Burger P, Wortham M, Reitman Z, He Y, Bigner D, Yan H, Lee C, Triscott J, Foster C, Manoranjan B, Pambid MR, Fotovati A, Berns R, Venugopal C, O'Halloran K, Narendran A, Northcott P, Taylor MD, Singh SK, Singhal A, Rassekh R, Maxwell CA, Dunham C, Dunn SE, Pambid MR, Berns R, Hu K, Adomat H, Moniri M, Chin MY, Hessein M, Zisman N, Maurer N, Dunham C, Guns E, Dunn S, Koks C, De Vleeschouwer S, Graf N, Van Gool S, D'Asti E, Huang A, Korshunov A, Pfister S, Rak J, Gump W, Moriarty T, Gump W, Skjei K, Karkare S, Castelo-Branco P, Choufani S, Mack S, Gallagher D, Zhang C, Merino D, Wasserman J, Kool M, Jones DT, Croul S, Kreitzer F, Largaespada D, Conklin B, Taylor M, Weiss W, Garzia L, Morrissy S, Zayne K, Wu X, Dirks P, Hawkins C, Dick J, Stein L, Collier L, Largaespada D, Dupuy A, Taylor M, Rampazzo G, Moraes L, Paniago M, Oliveira I, Hitzler J, Silva N, Cappellano A, Cavalheiro S, Alves MT, Cerutti J, Toledo S, Liu Z, Zhao X, Mao H, Baxter P, Wang JCY, Huang Y, Yu L, Su J, Adekunle A, Perlaky L, Hurwitz M, Hurwitz R, Lau C, Chintagumpala M, Blaney S, Baruchel S, Li XN, Zhang J, Hariono S, Hashizume R, Fan Q, James CD, Weiss WA, Nicolaides T, Madsen PJ, Slaunwhite ES, Dirks PB, Ma JF, Henn RE, Hanno AG, Boucher KL, Storm PB, Resnick AC, Lourdusamy A, Rogers H, Ward J, Rahman R, Malkin D, Gilbertson R, Grundy R, Lourdusamy A, Rogers H, Ward J, Rahman R, Gilbertson R, Grundy R, Karajannis M, Fisher M, Pfister S, Milla S, Cohen K, Legault G, Wisoff J, Harter D, Merkelson A, Bloom M, Dhall G, Jones D, Korshunov A, Taylor MD, Pfister S, Eberhart C, Sievert A, Resnick A, Zagzag D, Allen J, Hankinson T, Gump J, Serrano-Almeida C, Torok M, Weksberg R, Handler M, Liu A, Foreman N, Garancher A, Rocques N, Miquel C, Sainte-Rose C, Delattre O, Bourdeaut F, Eychene A, Tabori U, Pouponnot C, Danielpour M, Levy R, Antonuk CD, Rodriguez J, Aravena JM, Kim GB, Gate D, Bannykh S, Svendsen C, Huang X, Town T, Breunig J, Amakye D, Robinson D, Rose K, Cho YJ, Ligon KL, Sharp T, Ando Y, Geoerger B, He Y, Doz F, Ashley D, Hargrave D, Casanova M, Tawbi H, Heath J, Bouffet E, Brandes AA, Chisholm J, Rodon J, Dubuc AM, Thomas A, Mita A, MacDonald T, Kieran M, Eisenstat D, Song X, Danielpour M, Levy R, Antonuk CD, Rodriguez J, Hashizume R, Aravena JM, Kim GB, Gate D, Bannykh S, Svendsen C, Town T, Breunig J, Morrissy AS, Mayoh C, Lo A, Zhang W, Thiessen N, Tse K, Moore R, Mungall A, Wu X, Van Meter TE, Cho YJ, Collins VP, MacDonald TJ, Li XN, Stehbens S, Fernandez-Lopez A, Malkin D, Marra MA, Taylor MD, Karajannis M, Legault G, Hagiwara M, Vega E, Merkelson A, Wisoff J, Younger S, Golfinos J, Roland JT, Allen J, Antonuk CD, Levy R, Kim GB, Town T, Danielpour M, Breunig J, Pak E, Barshow S, Zhao X, Ponomaryov T, Segal R, Levy R, Antonuk CD, Aravena JM, Kim GB, Svendsen C, Town T, Danielpour M, Zhu S, Breunig J, Chi S, Cohen K, Fisher M, Biegel J, Bowers D, Fangusaro J, Manley P, Janss A, Zimmerman MA, Wu X, Kieran M, Sayour E, Pham C, Sanchez-Perez L, Snyder D, Flores C, Kemeny H, Xie W, Cui X, Bigner D, Taylor MD, Sampson J, Mitchell D, Bandopadhayay P, Nguyen B, Masoud S, Vue N, Gholamin S, Yu F, Schubert S, Bergthold G, Weiss WA, Mitra S, Qi J, Bradner J, Kieran M, Beroukhim R, Cho YJ, Reddick W, Glass J, Ji Q, Paulus E, James CD, Gajjar A, Ogg R, Vanner R, Remke M, Aviv T, Lee L, Zhu X, Clarke I, Taylor M, Dirks P, Shuman MA, Hamilton R, Pollack I, Calligaris D, Liu X, Feldman D, Thompson C, Ide J, Buhrlage S, Gray N, Kieran M, Jan YN, Stiles C, Agar N, Remke M, Cavalli FMG, Northcott PA, Kool M, Pfister SM, Taylor MD, Project MAGIC, Rakopoulos P, Jan LY, Pajovic S, Buczkowicz P, Morrison A, Bouffet E, Bartels U, Becher O, Hawkins C, Truffaux N, Puget S, Philippe C, Gump W, Castel D, Taylor K, Mackay A, Le Dret L, Saulnier P, Calmon R, Boddaert N, Blauwblomme T, Sainte-Rose C, Jones C, Mutchnick I, Grill J, Liu X, Ebling M, Ide J, Wang L, Davis E, Marchionni M, Stuart D, Alberta J, Kieran M, Li KKW, Stiles C, Agar N, Remke M, Cavalli FMG, Northcott PA, Kool M, Pfister SM, Taylor MD, Project MAGIC, Tien AC, Pang JCS, Griveau A, Rowitch D, Ramkissoon L, Horowitz P, Craig J, Ramkissoon S, Rich B, Bergthold G, Tabori U, Taha H, Ng HK, Bowers D, Hawkins C, Packer R, Eberhart C, Goumnerova L, Chan J, Santagata S, Pomeroy S, Ligon A, Kieran M, Jackson S, Beroukhim R, Ligon K, Kuan CT, Chandramohan V, Keir S, Pastan I, Bigner D, Zhou Z, Ho S, Voss H, Patay Z, Souweidane M, Salloum R, DeWire M, Fouladi M, Goldman S, Chow L, Hummel T, Dorris K, Miles L, Sutton M, Howarth R, Stevenson C, Leach J, Griesinger A, Donson A, Hoffman L, Birks D, Amani V, Handler M, Foreman N, Sangar MC, Pai A, Pedro K, Ditzler SH, Girard E, Olson J, Gustafson WC, Meyerowitz J, Nekritz E, Charron E, Matthay K, Hertz N, Onar-Thomas A, Shokat K, Weiss W, Hanaford A, Raabe E, Eberhart C, Griesinger A, Donson A, Hoffman L, Amani V, Birks D, Gajjar A, Handler M, Mulcahy-Levy J, Foreman N, Olow AK, Dasgupta T, Yang X, Mueller S, Hashizume R, Kolkowitz I, Weiss W, Broniscer A, Resnick AC, Sievert AJ, Nicolaides T, Prados MD, Berger MS, Gupta N, James CD, Haas-Kogan DA, Flores C, Pham C, Dietl SM, Snyder D, Sanchez-Perez L, Bigner D, Sampson J, Mitchell D, Prakash V, Batanian J, Guzman M, Geller T, Pham CD, Wolfl M, Pei Y, Flores C, Snyder D, Bigner DD, Sampson JH, Wechsler-Reya RJ, Mitchell DA, Van Ommeren R, Venugopal C, Manoranjan B, Beilhack A, McFarlane N, Hallett R, Hassell J, Dunn S, Singh S, Dasgupta T, Olow A, Yang X, Hashizume R, Mueller S, Riedel S, Nicolaides T, Kolkowitz I, Weiss W, Prados M, Gupta N, James CD, Haas-Kogan D, Zhao H, Li L, Picotte K, Monoranu C, Stewart R, Modzelewska K, Boer E, Picard D, Huang A, Radiloff D, Lee C, Dunn S, Hutt M, Nazarian J, Dietl S, Price A, Lim KJ, Warren K, Chang H, Eberhart CG, Raabe EH, Persson A, Huang M, Chandler-Militello D, Li N, Vince GH, Berger M, James D, Goldman S, Weiss W, Lindquist R, Tate M, Rowitch D, Alvarez-Buylla A, Hoffman L, Donson A, Eyrich M, Birks D, Griesinger A, Amani V, Handler M, Foreman N, Meijer L, Walker D, Grundy R, O'Dowd S, Jaspan T, Schlegel PG, Dineen R, Fotovati A, Radiloff D, Coute N, Triscott J, Chen J, Yip S, Louis D, Toyota B, Hukin J, Weitzel D, Rassekh SR, Singhal A, Dunham C, Dunn S, Ahsan S, Hanaford A, Taylor I, Eberhart C, Raabe E, Sun YG, Ashcraft K, Stiles C, Han L, Zhang K, Chen L, Shi Z, Pu P, Dong L, Kang C, Cordero F, Lewis P, Liu C, Hoeman C, Schroeder K, Allis CD, Becher O, Gururangan S, Grant G, Driscoll T, Archer G, Herndon J, Friedman H, Li W, Kurtzberg J, Bigner D, Sampson J, Mitchell D, Yadavilli S, Kambhampati M, Becher O, MacDonald T, Bellamkonds R, Packer R, Buckley A, Nazarian J, DeWire M, Fouladi M, Stewart C, Wetmore C, Hawkins C, Jacobs C, Yuan Y, Goldman S, Fisher P, Rodriguez R, Rytting M, Bouffet E, Khakoo Y, Hwang E, Foreman N, Gilbert M, Gilbertson R, Gajjar A, Saratsis A, Yadavilli S, Wetzel W, Snyder K, Kambhampati M, Hall J, Raabe E, Warren K, Packer R, Nazarian J, Thompson J, Griesinger A, Foreman N, Spazojevic I, Rush S, Levy JM, Hutt M, Karajannis MA, Shah S, Eberhart CG, Raabe E, Rodriguez FJ, Gump J, Donson A, Tovmasyan A, Birks D, Handler M, Foreman N, Hankinson T, Torchia J, Khuong-Quang DA, Ho KC, Picard D, Letourneau L, Chan T, Peters K, Golbourn B, Morrissy S, Birks D, Faria C, Foreman N, Taylor M, Rutka J, Pfister S, Bouffet E, Hawkins C, Batinic-Haberle I, Majewski J, Kim SK, Jabado N, Huang A, Ladner T, Tomycz L, Watchmaker J, Yang T, Kaufman L, Pearson M, Dewhirst M, Ogg RJ, Scoggins MA, Zou P, Taherbhoy S, Jones MM, Li Y, Glass JO, Merchant TE, Reddick WE, Conklin HM, Gholamin S, Gajjar A, Khan A, Kumar A, Tye GW, Broaddus WC, Van Meter TE, Shih DJH, Northcott PA, Remke M, Korshunov A, Mitra S, Jones DTW, Kool M, Pfister SM, Taylor MD, Mille F, Levesque M, Remke M, Korshunov A, Izzi L, Kool M, Richard C, Northcott PA, Taylor MD, Pfister SM, Charron F, Yu F, Masoud S, Nguyen B, Vue N, Schubert S, Tolliday N, Kong DS, Sengupta S, Weeraratne D, Schreiber S, Cho YJ, Birks D, Jones K, Griesinger A, Amani V, Handler M, Vibhakar R, Achrol A, Foreman N, Brown R, Rangan K, Finlay J, Olch A, Freyer D, Bluml S, Gate D, Danielpour M, Rodriguez J, Shae JJ, Kim GB, Levy R, Bannykh S, Breunig JJ, Town T, Monje-Deisseroth M, Cho YJ, Weissman I, Cheshier S, Buczkowicz P, Rakopoulos P, Bouffet E, Morrison A, Bartels U, Becher O, Hawkins C, Dey A, Kenney A, Van Gool S, Pauwels F, De Vleeschouwer S, Barszczyk M, Buczkowicz P, Castelo-Branco P, Mack S, Nethery-Brokx K, Morrison A, Taylor M, Dirks P, Tabori U, Hawkins C, Chandramohan V, Keir ST, Bao X, Pastan IH, Kuan CT, Bigner DD, Bender S, Jones D, Kool M, Sturm D, Korshunov A, Lichter P, Pfister SM, Chen M, Lu J, Wang J, Keir S, Zhang M, Zhao S, Mook R, Barak L, Lyerly HK, Chen W, Ramachandran C, Nair S, Escalon E, Khatib Z, Quirrin KW, Melnick S, Kievit F, Stephen Z, Wang K, Silber J, Ellenbogen R, Zhang M, Hutzen B, Studebaker A, Bratasz A, Powell K, Raffel C, Guo C, Chang CC, Wortham M, Chen L, Kernagis D, Qin X, Cho YW, Chi JT, Grant G, McLendon R, Yan H, Ge K, Papadopoulos N, Bigner D, He Y, Cristiano B, Venkataraman S, Birks DK, Alimova I, Harris PS, Dubuc A, Taylor MD, Foreman NK, Vibhakar R, Ichimura K, Fukushima S, Totoki Y, Suzuki T, Mukasa A, Saito N, Kumabe T, Tominaga T, Kobayashi K, Nagane M, Iuchi T, Mizoguchi M, Sasaki T, Tamura K, Sugiyama K, Narita Y, Shibui S, Matsutani M, Shibata T, Nishikawa R, Northcott P, Zichner T, Jones D, Kool M, Jager N, Feychting M, Lannering B, Tynes T, Wesenberg F, Hauser P, Ra YS, Zitterbart K, Jabado N, Chan J, Fults D, Mueller S, Grajkowska W, Lichter P, Korbel J, Pfister S, Kool M, Jones DTW, Jaeger N, Northcott PA, Pugh T, Hovestadt V, Markant SL, Esparza LA, Bourdeaut F, Remke M, Taylor MD, Cho YJ, Pomeroy SL, Schueller U, Korshunov A, Eils R, Wechsler-Reya RJ, Lichter P, Pfister SM, Keir S, Pegram C, Lipp E, Rasheed A, Chandramohan V, Kuan CT, Kwatra M, Yan H, Bigner D, Chornenkyy Y, Buczkowicz P, Agnihotri S, Becher O, Hawkins C, Rogers H, Mayne C, Kilday JP, Coyle B, Grundy R, Sun T, Warrington N, Luo J, Brooks M, Dahiya S, Sengupta R, Rubin J, Erdreich-Epstein A, Robison N, Ren X, Zhou H, Ji L, Margo A, Jones D, Pfister S, Kool M, Sposto R, Asgharzadeh S, Clifford S, Gustafsson G, Ellison D, Figarella-Branger D, Doz F, Rutkowski S, Lannering B, Pietsch T, Broniscer A, Tatevossian R, Sabin N, Klimo P, Dalton J, Lee R, Gajjar A, Ellison D, Garzia L, Dubuc A, Pitcher G, Northcott P, Mariampillai A, Chan T, Skowron P, Wu X, Yao Y, Hawkins C, Peacock J, Zayne K, Croul S, Rutka J, Kenney A, Huang A, Yang V, Baylin S, Salter M, Taylor M, Ward S, Sengupta R, Rubin J, Garzia L, Morrissy S, Skowron P, Jelveh S, Lindsay P, Largaespada D, Collier L, Dupuy A, Hill R, Taylor M, Lulla RR, Laskowski J, Fangusaro J, DiPatri AJ, Alden T, Vanin EF, Tomita T, Goldman S, Soares MB, Rajagopal MU, Lau LS, Hathout Y, Gordish-Dressman H, Rood B, Datar V, Bochare S, Singh A, Khatau S, Fangusaro J, Goldman S, Lulla R, Rajaram V, Gopalakrishnan V, Morfouace M, Shelat A, Jaccus M, Freeman B, Zindy F, Robinson G, Guy K, Stewart C, Gajjar A, Roussel M, Krebs S, Chow K, Yi Z, Brawley V, Ahmed N, Gottschalk S, Lerner R, Harness J, Yoshida Y, Santos R, Torre JDL, Nicolaides T, Ozawa T, James D, Petritsch C, Vitte J, Chareyre F, Stemmer-Rachamimov A, Giovannini M, Hashizume R, Yu-Jen L, Tom M, Ihara Y, Huang X, Waldman T, Mueller S, Gupta N, James D, Shevtsov M, Yakovleva L, Nikolaev B, Dobrodumov A, Onokhin K, Bychkova N, Mikhrina A, Khachatryan W, Guzhova I, Martynova M, Bystrova O, Ischenko A, Margulis B, Martin A, Nirschl C, Polanczyk M, Cohen K, Pardoll D, Drake C, Lim M, Crowther A, Chang S, Yuan H, Deshmukh M, Gershon T, Meyerowitz JG, Gustafson WC, Nekritz EA, Swartling F, Shokat KM, Ruggero D, Weiss WA, Bergthold G, Rich B, Bandopadhayay P, Chan J, Santaga S, Hoshida Y, Golub T, Tabak B, Ferrer-Luna R, Grill J, Wen PY, Stiles C, Kieran M, Ligon K, Beroukhim R, Lulla RR, Laskowski J, Gireud M, Fangusaro J, Goldman S, Gopalakrishnan V, Merino D, Shlien A, Pienkowska M, Tabori U, Gilbertson R, Malkin D, Mueller S, Hashizume R, Yang X, Kolkowitz I, Olow A, Phillips J, Smirnov I, Tom M, Prados M, Berger M, Gupta N, Haas-Kogan D, Beez T, Sarikaya-Seiwert S, Janssen G, Felsberg J, Steiger HJ, Hanggi D, Marino AM, Baryawno N, Johnsen JI, Ostman A, Wade A, Engler JR, Robinson AE, Phillips JJ, Witt H, Sill M, Mack SC, Wani KM, Lambert S, Tzaridis T, Bender S, Jones DT, Milde T, Northcott PA, Kool M, von Deimling A, Kulozik AE, Witt O, Lichter P, Collins VP, Aldape K, Taylor MD, Korshunov A, Pfister SM, Hatcher R, Das C, Datar V, Taylor P, Singh A, Lee D, Fuller G, Ji L, Fangusaro J, Rajaram V, Goldman S, Eberhart C, Gopalakrishnan V, Griveau A, Lerner R, Ihrie R, Sugiarto S, Ihara Y, Reichholf B, Huillard E, Mcmahon M, James D, Phillips J, Buylla AA, Rowitch D, Petritsch C, Snuderl M, Batista A, Kirkpatrick N, de Almodovar CR, Riedemann L, Knevels E, Schmidt T, Peterson T, Roberge S, Bais C, Yip S, Hasselblatt M, Rossig C, Ferrara N, Klagsbrun M, Duda D, Fukumura D, Xu L, Carmeliet P, Jain R, Nguyen A, Pencreach E, Lasthaus C, Lobstein V, Guerin E, Guenot D, Entz-Werle N, Diaz R, Golbourn B, Faria C, Shih D, MacKenzie D, Picard D, Bryant M, Smith C, Taylor M, Huang A, Rutka J, Gromeier M, Desjardins A, Sampson JH, Threatt SJE, Herndon JE, Friedman A, Friedman HS, Bigner DD, Cavalli FMG, Morrissy AS, Li Y, Chu A, Remke M, Thiessen N, Mungall AJ, Bader GD, Malkin D, Marra MA, Taylor MD, Manoranjan B, Wang X, Hallett R, Venugopal C, Mack S, McFarlane N, Nolte S, Scheinemann K, Gunnarsson T, Hassell J, Taylor M, Lee C, Triscott J, Foster C, Dunham C, Hawkins C, Dunn S, Singh S, McCrea HJ, Bander E, Venn RA, Reiner AS, Iorgulescu JB, Puchi LA, Schaefer PM, Cederquist G, Greenfield JP, Tsoli M, Luk P, Dilda P, Hogg P, Haber M, Ziegler D, Mack S, Agnihotri S, Witt H, Shih D, Wang X, Ramaswamy V, Zayne K, Bertrand K, Massimi L, Grajkowska W, Lach B, Gupta N, Weiss W, Guha A, Zadeh G, Rutka J, Korshunov A, Pfister S, Taylor M, Mack S, Witt H, Jager N, Zuyderduyn S, Nethery-Brokx K, Garzia L, Zayne K, Wang X, Barszczyk M, Wani K, Bouffet E, Weiss W, Hawkins C, Rutka J, Bader G, Aldape K, Dirks P, Pfister S, Korshunov A, Taylor M, Engler J, Robinson A, Wade A, Molinaro A, Phillips J, Ramaswamy V, Remke M, Bouffet E, Faria C, Shih D, Gururangan S, McLendon R, Schuller U, Ligon K, Pomeroy S, Jabado N, Dunn S, Fouladi M, Rutka J, Hawkins C, Tabori U, Packer R, Pfister S, Korshunov A, Taylor M, Faria C, Dubuc A, Golbourn B, Diaz R, Agnihotri S, Sabha N, Luck A, Leadly M, Reynaud D, Wu X, Remke M, Ramaswamy V, Northcott P, Pfister S, Croul S, Kool M, Korshunov A, Smith C, Taylor M, Rutka J, Pietsch T, Doerner E, Muehlen AZ, Velez-Char N, Warmuth-Metz M, Kortmann R, von Hoff K, Friedrich C, Rutkowski S, von Bueren A, Lu YJ, James CD, Hashizume R, Mueller S, Phillips J, Gupta N, Sturm D, Northcott PA, Jones DTW, Korshunov A, Picard D, Lichter P, Huang A, Pfister SM, Kool M, Ward J, Teague C, Shriyan B, Grundy R, Rahman R, Taylor K, Mackay A, Morozova O, Butterfield Y, Truffaux N, Philippe C, Vinci M, de Torres C, Cruz O, Mora J, Hargrave D, Puget S, Yip S, Jones C, Grill J, Smith S, Ward J, Tan C, Grundy R, Rahman R, Bjerke L, Mackay A, Nandhabalan M, Burford A, Jury A, Popov S, Bax D, Carvalho D, Taylor K, Vinci M, Bajrami I, McGonnell I, Lord C, Reis R, Hargrave D, Ashworth A, Workman P, Jones C, Carvalho D, Mackay A, Burford A, Bjerke L, Chen L, Kozarewa I, Lord C, Ashworth A, Hargrave D, Reis R, Jones C, Marigil M, Jauregui PJ, Alonso M, Chan TS, Hawkins C, Picard D, Henkin J, Huang A, Trubicka J, Kucharczyk M, Pelc M, Chrzanowska K, Ciara E, Perek-Polnik M, Grajkowska W, Piekutowska-Abramczuk D, Jurkiewicz D, Luczak S, Borucka-Mankiewicz M, Kowalski P, Krajewska-Walasek M, de Mola RML, Laskowski J, Fangusaro J, Costa FF, Vanin EF, Goldman S, Soares MB, Lulla RR, Mann A, Venugopal C, Vora P, Singh M, van Ommeren R, McFarlane N, Manoranjan B, Qazi M, Scheinemann K, MacDonald P, Delaney K, Whitton A, Dunn S, Singh S, Sievert A, Lang SS, Boucher K, Madsen P, Slaunwhite E, Choudhari N, Kellet M, Storm P, Resnick A, Agnihotri S, Burrell K, Fernandez N, Golbourn B, Clarke I, Barszczyk M, Sabha N, Dirks P, Jones C, Rutka J, Zadeh G, Hawkins C, Murphy B, Obad S, Bihannic L, Ayrault O, Zindy F, Kauppinen S, Roussel M, Golbourn B, Agnihotri S, Cairns R, Mischel P, Aldape K, Hawkins C, Zadeh G, Rutka J, Rush S, Donson A, Kleinschmidt-DeMasters B, Bemis L, Birks D, Chan M, Smith A, Handler M, Foreman N, Gronych J, Jones DTW, Zuckermann M, Hutter S, Korshunov A, Kool M, Ryzhova M, Reifenberger G, Pfister SM, Lichter P, Jones DTW, Hovestadt V, Picelli S, Wang W, Northcott PA, Kool M, Jager N, Reifenberger G, Rutkowski S, Pietsch T, Sultan M, Yaspo ML, Landgraf P, Eils R, Korshunov A, Zapatka M, Pfister SM, Radlwimmer B, Lichter P, Huang Y, Mao H, Wang Y, Kogiso M, Zhao X, Baxter P, Man C, Wang Z, Zhou Y, Li XN, Chung AH, Crabtree D, Schroeder K, Becher OJ, Panosyan E, Wang Y, Lasky J, Liu Z, Zhao X, Wang Y, Mao H, Huang Y, Kogiso M, Baxter P, Adesina A, Su J, Picard D, Huang A, Perlaky L, Chintagumpala M, Lau C, Blaney S, Li XN, Huang M, Persson A, Swartling F, Moriarity B. Abstracts. Neuro Oncol 2013. [DOI: 10.1093/neuonc/not047] [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: 11/13/2022] Open
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Maystadt I, Destree A, Benoit V, Aeby A, Lederer D, Moortgat S, Jurkiewicz D, Krajewska-Walasek M, Hanauer A, Thomas GM. RSK2mutation co-segregates with X-linked intellectual disability and attenuated Coffin-Lowry phenotype in a three-generation family. Clin Genet 2013; 85:96-9. [DOI: 10.1111/cge.12122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2012] [Revised: 02/06/2013] [Accepted: 02/12/2013] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - V Benoit
- Département de Biologie Moléculaire; Institut de Pathologie et de Génétique; Gosselies Belgium
| | - A Aeby
- Département de Neurologie Pédiatrique; Université Libre de Bruxelles-Hôpital Erasme; Brussels Belgium
| | | | | | - D Jurkiewicz
- Department of Medical Genetics; The Children's Memorial Health Institute; Warszaw Poland
| | - M Krajewska-Walasek
- Department of Medical Genetics; The Children's Memorial Health Institute; Warszaw Poland
| | - A Hanauer
- Translational Medicine & Neurogenetics; IGBMC; Illkirch France
| | - GM Thomas
- Shriners Hospital Pediatric Research Center; Temple University Medical School; Philadelphia PA USA
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Jezela-Stanek A, Kucharczyk M, Pelc M, Gutkowska A, Krajewska-Walasek M. 1.15 Mb microdeletion in chromosome band 20p13 associated with moderate developmental delay-additional case and data's review. Am J Med Genet A 2012; 161A:172-8. [PMID: 23165892 DOI: 10.1002/ajmg.a.35654] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Accepted: 06/27/2012] [Indexed: 12/14/2022]
Abstract
We report on a 9-year-old girl with subtelomeric 20p microdeletion. She was referred for genetic counseling because of learning difficulties/school problems. During the evaluation short stature, hypoplastic fingernails, submucous cleft palate with cleft uvula, flat feet, and frequent upper respiratory infections, as well as the large fontanelle after birth were observed. No facial dysmorphic features specific for chromosomal aberrations were present. The diagnosis of deletion of 20p13 was established by MLPA, and delineated by arrayCGH. Our report describes the third individual with this approximate deletion, and presents detailed molecular and phenotypic characteristics providing new data supporting future genotype-phenotype study.
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Skórka A, Ciara E, Gieruszczak-Białek D, Pelc M, Kugaudo M, Chrzanowska K, Krajewska-Walasek M. A girl with two syndromes: Turner syndrome and Costello syndrome. A case history. Am J Med Genet A 2012; 158A:1486-8. [PMID: 22528320 DOI: 10.1002/ajmg.a.35320] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2011] [Accepted: 01/30/2012] [Indexed: 11/09/2022]
Affiliation(s)
- Agata Skórka
- Department of Pediatrics, Medical University of Warsaw, Warsaw, Poland.
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Jezela-Stanek A, Kucharczyk M, Pelc M, Chrzanowska KH, Krajewska-Walasek M. Minimal clinical findings in a patient with 15qter microdeletion syndrome: Delineation of the associated phenotype. Am J Med Genet A 2012; 158A:922-6. [DOI: 10.1002/ajmg.a.34440] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Accepted: 10/31/2011] [Indexed: 11/12/2022]
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Jezela-Stanek A, Ciara E, Juszczak M, Pelc M, Materna-Kiryluk A, Krajewska-Walasek M. Cryptic x; autosome translocation in a boy--delineation of the phenotype. Pediatr Neurol 2011; 44:221-4. [PMID: 21310340 DOI: 10.1016/j.pediatrneurol.2010.10.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 08/19/2010] [Accepted: 10/01/2010] [Indexed: 11/25/2022]
Abstract
Chromosome X-to-autosome translocations [t(X;A)] are rare rearrangements with an estimated occurrence of 1 to 3 per 10,000 live births. Occurrences of Xq duplications have been observed in male and female subjects in whom the X chromosome segment escapes inactivation and results in functional disomy. We report a case of X;6 translocation in a 7-year-old boy with severe mental retardation, hypotonia, and recurrent respiratory tract infections. High-resolution chromosome analyses (fluorescence in situ hybridization, multiplex ligation probe-dependent amplification, and whole-genome array) revealed a terminal duplication of chromosome X at q28-qter (approximately 3.246 Mb in size) involving gene MECP2 and a terminal deletion (approximately 1.89 Mb) with the breakpoint at 6q27. This is the second report of a boy with a cryptic unbalanced Xq-autosome translocation. This case increases our understanding of mental disability caused by terminal Xq duplication.
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Affiliation(s)
- Aleksandra Jezela-Stanek
- Department of Medical Genetics, The Children's Memorial Health Institute, Aleja Dzieci Polskich 20, 04-736 Warsaw, Poland.
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Sykut-Cegielska J, Gradowska W, Piekutowska-Abramczuk D, Andresen BS, Olsen RKJ, Ołtarzewski M, Pronicki M, Pajdowska M, Bogdańska A, Jabłońska E, Radomyska B, Kuśmierska K, Krajewska-Walasek M, Gregersen N, Pronicka E. Urgent metabolic service improves survival in long-chain 3-hydroxyacyl-CoA dehydrogenase (LCHAD) deficiency detected by symptomatic identification and pilot newborn screening. J Inherit Metab Dis 2011; 34:185-95. [PMID: 21103935 DOI: 10.1007/s10545-010-9244-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2010] [Revised: 08/04/2010] [Accepted: 10/29/2010] [Indexed: 10/18/2022]
Abstract
UNLABELLED Long-chain 3-hydroxyacyl-CoA dehydrogenase deficiency (LCHADD) is a fatty acid oxidation disorder with especially high mortality and uncertain long-term outcome. The aim of the study was to analyze the influence of diagnostic approach on survival in 59 affected children. Referral to a metabolic center was replaced over time by urine/blood testing in centralized metabolic laboratory (selective screening) and by pilot tandem mass spectrometry newborn screening (NBS). Molecular analysis revealed the prevalent mutation in the HADHA gene in all 58 examined cases. Twenty patients died. The number of detections and number of deaths were respectively 9 and 4 (44%) in the patients recognized by differential diagnosis, 28 and 9 (32%) - by selective screening, and 11 and 1 (9%) - by NBS. In 80% of cases the death occurred before or within 3 weeks from the identification. Urgent and active metabolic service remarkably influenced the surviving. The current age of 39 survivors is 0.5 to 23 yrs (mean 7.2 yrs). The disease frequency estimated on the patients number was 1: 115 450, whereas in the pilot NBS - 1: 109 750 (658 492 neonates tested). Interestingly, the phenylalanine level in asymptomatic neonates frequently exceeded the cut-off values. CONCLUSIONS 1) Urgent metabolic intervention decreases mortality of LCHAD-deficient patients, but the prognosis is still uncertain. 2) Emergent metabolic reporting and service are crucial also for the survival of neonates detected by NBS. 3) The nationwide selective screening appeared efficient in LCHADD detection in the country. 4) Transient mild hyperphenylalaninaemia may occur in LCHAD-deficient newborns.
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Affiliation(s)
- Jolanta Sykut-Cegielska
- Department of Metabolic Diseases, Endocrinology and Diabetology, Children's Memorial Health Institute, Warsaw, Poland
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Piekutowska-Abramczuk D, Olsen RKJ, Wierzba J, Popowska E, Jurkiewicz D, Ciara E, Ołtarzewski M, Gradowska W, Sykut-Cegielska J, Krajewska-Walasek M, Andresen BS, Gregersen N, Pronicka E. A comprehensive HADHA c.1528G>C frequency study reveals high prevalence of long-chain 3-hydroxyacyl-CoA dehydrogenase deficiency in Poland. J Inherit Metab Dis 2010; 33 Suppl 3:S373-7. [PMID: 20814823 DOI: 10.1007/s10545-010-9190-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2010] [Revised: 08/03/2010] [Accepted: 08/09/2010] [Indexed: 11/29/2022]
Abstract
Isolated long-chain 3-hydroxyacyl-CoA dehydrogenase deficiency (LCHADD) is associated with c.1528G>C substitution in the HADHA gene, since most patients have the prevalent mutation on at least one allele. As it is known that the disease is relatively frequent in Europe, especially around the Baltic Sea, and that the majority of Polish LCHADD patients originate from the coastal Pomeranian province, partly inhabited by an ancient ethnic group, the Kashubians, we aimed to determine the carrier frequency of the prevalent HADHA mutation in various districts of Poland with special focus on the Kashubian district. A total of 6,854 neonatal dried blood samples from the entire country, including 2,976 Pomeranian neonates of Kashubian origin, were c.1528G>C genotyped. Fifty-nine heterozygous carriers for the prevalent c.1528G>C substitution (41 Pomeranian children) were detected in the studied group. Our data reveal a geographically skewed distribution of the c.1528C allele in the Polish population; in the northern Pomeranian province the carrier frequency is 1:73, which is the highest frequency ever reported, whereas in the remaining regions it is 1:217. Hence, the incidence of LCHADD in Poland is predicted to be 1:118,336 versus 1:16,900 in the Pomeranian district. Despite the relative rarity of the disease, screening for LCHADD in neonates born in the northern part of Poland, especially those of Kashubian origin, is justified. Our data allow us to suggest a probable Kashubian origin of the prevalent c.1528G>C mutation.
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Affiliation(s)
- Dorota Piekutowska-Abramczuk
- Department of Medical Genetics, Children's Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland.
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Jezela-Stanek A, Ciara E, Małunowicz E, Chrzanowska K, Latos-Bieleńska A, Krajewska-Walasek M. Differences between predicted and established diagnoses of Smith-Lemli-Opitz syndrome in the Polish population: underdiagnosis or loss of affected fetuses? J Inherit Metab Dis 2010; 33 Suppl 3:S241-8. [PMID: 20556518 DOI: 10.1007/s10545-010-9132-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2009] [Revised: 03/26/2010] [Accepted: 05/14/2010] [Indexed: 10/19/2022]
Abstract
Smith-Lemli-Opitz syndrome (SLOS) is a metabolic disorder in which an error in cholesterol biosynthesis results in congenital anomalies/mental deficits. The results of our previous newborn screening, based on the carrier frequency of the two most common SLOS-causing mutations in Poland (p.W151X and p.V326L), would make SLOS one of the most frequent recessive disorders in our country (with an incidence of 1:2,300 - 1:3,937). This prompted us to carry out a 3-year (2006-2008) national surveillance program in which about 2,000 physicians were asked to identify potential SLOS patients pre- and postnatally based on clinical identification forms. The incidence of SLOS in Poland was estimated to be from 1:60,941 to 1:105,395 (1: 83,168 ± 22,227) live births, and its 3-year prevalence 1:866,273 ± 16,242. The mean carrier frequency was calculated to be from 1:123 to 1:165. The notable discrepancy between our previous carrier newborn screening and these prospective data may result from reduced fertility in SLOS carriers, intrauterine death of affected fetuses, or underdiagnosis in postnatal life. Since we did not notice significant data supporting the first two aspects, our study may support the suggestion that screening for the most frequent DHCR7 alleles does not reflect the true disease rates in the Polish population. Hence, further studies in which maternal urinary steroids (7-dehydroestriol/estriol and 8-dehydropregnanetriol/pregnanetriol ratios) would serve as screening markers in early pregnancies may be justified.
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Affiliation(s)
- Aleksandra Jezela-Stanek
- Department of Medical Genetics, The Children's Memorial Health Institute, Aleja Dzieci Polskich 20, 04-736 Warsaw, Poland.
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Ciara E, Piekutowska-Abramczuk D, Popowska E, Grajkowska W, Barszcz S, Perek D, Dembowska-Bagińska B, Perek-Polnik M, Kowalewska E, Czajńska A, Syczewska M, Czornak K, Krajewska-Walasek M, Roszkowski M, Chrzanowska KH. Heterozygous germ-line mutations in the NBN gene predispose to medulloblastoma in pediatric patients. Acta Neuropathol 2010; 119:325-34. [PMID: 19908051 DOI: 10.1007/s00401-009-0608-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [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: 07/10/2009] [Revised: 10/30/2009] [Accepted: 10/31/2009] [Indexed: 01/23/2023]
Abstract
The NBN (NBS1) gene belongs to a group of double-strand break repair genes. Mutations in any of these genes cause genome instability syndromes and contribute to carcinogenesis. NBN gene mutations cause increased tumor risk in Nijmegen breakage syndrome (NBS) homozygotes as well as in NBN heterozygotes. NBS patients develop different types of malignancies; among solid tumors, medulloblastoma (MB), an embryonal tumor of the cerebellum, has been reported most frequently. The majority of medulloblastomas occur sporadically, some of them manifest within familial cancer syndromes. Several signaling pathways are known to be engaged in hereditary and sporadic MB. The aim of our study was to identify mutations in selected exons of the NBN gene and to determine the frequency of the most common NBN gene mutations in pediatric patients with different types of medulloblastoma. We screened a total of 104 patients with MB and identified 7 heterozygous carriers (6.7%) of two different germ-line mutations of NBN gene; all of them had classic MB. Our results indicate that heterozygous carriers of the germ-line NBN gene mutations (c.511A>G and c.657_661del5) may exhibit increased susceptibility to developing MB. The risk of medulloblastoma is estimated to be 3.0 (for c.511A>G) and 4.86 (for c.657_661del5) times higher than in the general Polish population (p<0.05). These results suggest that heterozygous NBN germ-line mutations may contribute to the etiology of medulloblastoma.
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Affiliation(s)
- Elżbieta Ciara
- Department of Medical Genetics, The Children's Memorial Health Institute, Al. Dzieci Polskich 20, 04-730, Warsaw, Poland
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Piekutowska-Abramczuk D, Magner M, Popowska E, Pronicki M, Karczmarewicz E, Sykut-Cegielska J, Kmiec T, Jurkiewicz E, Szymanska-Debinska T, Bielecka L, Krajewska-Walasek M, Vesela K, Zeman J, Pronicka E. SURF1 missense mutations promote a mild Leigh phenotype. Clin Genet 2009; 76:195-204. [PMID: 19780766 DOI: 10.1111/j.1399-0004.2009.01195.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
UNLABELLED SURF1 gene mutations are the most common cause of Leigh syndrome (LS), a rare progressive neurodegenerative disorder of infancy, characterized by symmetric necrotizing lesions and hypervascularity in the brainstem and basal ganglia, leading to death before the age of 4 years. Most of the reported mutations create premature termination codons, whereas missense mutations are rare. The aim of the study was to characterize the natural history of LS patients carrying at least one missense mutation in the SURF1 gene. Nineteen such patients (8 own cases and 11 reported in the literature) were compared with a reference group of 20 own c.845_846delCT homozygous patients, and with other LS(SURF-) cases described in the literature. Disease onset in the studied group was delayed. Acute failure to thrive and hyperventilation episodes were rare, respiratory failure did not appear before the age of 4 years. Dystonia, motor regression and eye movement dissociation developed slowly. The number of patients who survived 7 years of life totaled 9 out of 15 (60%) in the 'missense group' and 1 out of 26 (4%) patients with mutations leading to truncated proteins. IN CONCLUSION (i) The presence of a missense mutation in the SURF1 gene may correlate with a milder course and longer survival of Leigh patients, (ii) normal magnetic resonance imaging (MRI) findings, normal blood lactate value, and only mild decrease of cytochrome c oxidase (COX) activity are not sufficient reasons to forego SURF1 mutation analysis in differential diagnosis.
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Jezela-Stanek A, Fisher C, Szarras-Czapnik M, Olczak-Kowalczyk D, Gibbons RJ, Słowikowska-Hilczer J, Krajewska-Walasek M. X-linked alpha thalassaemia/mental retardation syndrome: a case with gonadal dysgenesis, caused by a novel mutation in ATRX gene. Clin Dysmorphol 2009; 18:168-171. [PMID: 19444090 DOI: 10.1097/mcd.0b013e32832a9ea5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Aleksandra Jezela-Stanek
- Departments of Medical Genetics Endocrinology Oral Pathology, The Children's Memorial Health Institute, Warsaw Department of Andrology and Reproductive Endocrinology, Institute of Endocrinology, Medical University of Lodz, Lodz, Poland MRC Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Oxford, UK
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Piekutowska-Abramczuk D, Ciara E, Popowska E, Grajkowska W, Dembowska-Bagińska B, Kowalewska E, Czajńska A, Perek-Polnik M, Roszkowski M, Syczewska M, Krajewska-Walasek M, Perek D, Chrzanowska KH. The frequency of NBN molecular variants in pediatric astrocytic tumors. J Neurooncol 2009; 96:161-8. [PMID: 19629396 DOI: 10.1007/s11060-009-9958-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2009] [Accepted: 06/22/2009] [Indexed: 10/20/2022]
Abstract
Gliomas, particularly those of astrocytic origin, are the most frequent primary central nervous system tumors that develop in children. The majority of them are benign and slow growing, with relatively good prognosis. Several genomic and gene alterations are known to be involved in astrocytoma development, but the precise mechanisms remain poorly understood. The NBN gene, which participates in DNA double-strand break repair and maintenance of genome stability, has been postulated to be a susceptibility factor for a number of cancers. Here we report the results of NBN gene analyses performed in 127 children with various astrocytic tumors. PCR-SSCP analysis followed by DNA sequencing was used for molecular variant screening. Three carriers (2.37%) of different germline mutations on one NBN allele were found. The common Slavic deletion c.657_661del5 (p.K219fsX19) was detected in a patient with pilocytic astrocytoma; a known mutation, c.643C>T (p.R215W), and a new substitution, c.565C>G (p.Q189E), were identified in two patients with primary glioblastoma. The risk of developing astrocytic malignancies is estimated to be 1.33 times higher for c.657_661del5 and 3.2 times higher for c.643C>T than in the general Polish population (P > 0.05). Because of the low frequency of the mutations identified in the studied group, we were unable to determine the exact role of NBN in the development of astrocytoma in children. The presence of two potentially pathogenic NBN molecular variants among 16 glioblastoma cases (12.5%) could be a remarkable finding in our study. We thus cannot exclude a possible role of NBN in the tumorigenesis of a certain type of astrocytic tumors.
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Affiliation(s)
- Dorota Piekutowska-Abramczuk
- Department of Medical Genetics, The Children's Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland
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Bartholdi D, Krajewska-Walasek M, Ounap K, Gaspar H, Chrzanowska KH, Ilyana H, Kayserili H, Lurie IW, Schinzel A, Baumer A. Epigenetic mutations of the imprinted IGF2-H19 domain in Silver-Russell syndrome (SRS): results from a large cohort of patients with SRS and SRS-like phenotypes. J Med Genet 2008; 46:192-7. [PMID: 19066168 DOI: 10.1136/jmg.2008.061820] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Witsch-Baumgartner M, Schwentner I, Gruber M, Benlian P, Bertranpetit J, Bieth E, Chevy F, Clusellas N, Estivill X, Gasparini G, Giros M, Kelley RI, Krajewska-Walasek M, Menzel J, Miettinen T, Ogorelkova M, Rossi M, Scala I, Schinzel A, Schmidt K, Schönitzer D, Seemanova E, Sperling K, Syrrou M, Talmud PJ, Wollnik B, Krawczak M, Labuda D, Utermann G. Age and origin of major Smith-Lemli-Opitz syndrome (SLOS) mutations in European populations. J Med Genet 2007; 45:200-9. [PMID: 17965227 DOI: 10.1136/jmg.2007.053520] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Smith-Lemli-Opitz syndrome (SLOS) (MIM 270 400) is an autosomal recessive multiple congenital anomalies/mental retardation syndrome caused by mutations in the Delta7-sterol reductase (DHCR7, E.C.1.3.1.21) gene. The prevalence of SLOS has been estimated to range between 1:15000 and 1:60000 in populations of European origin. METHODS AND RESULTS We have analysed the frequency, origin, and age of DHCR7 mutations in European populations. In 263 SLOS patients 10 common alleles (c.964-1G>C, p.Trp151X, p.Thr93Met, p.Val326Leu, p.Arg352Trp, p.Arg404Cys, p.Phe302Leu, p.Leu157Pro, p.Gly410Ser, p.Arg445Gln) were found to constitute approximately 80% of disease-causing mutations. As reported before, the mutational spectra differed significantly between populations, and frequency peaks of common mutations were observed in North-West (c.964-1G>C), North-East (p.Trp151X, p.Val326Leu) and Southern Europe (p.Thr93Met). SLOS was virtually absent from Finland. The analysis of nearly 8000 alleles from 10 different European populations confirmed a geographical distribution of DHCR7 mutations as reported in previous studies. The common Null mutations in Northern Europe (combined ca. 1:70) occurred at a much higher frequency than expected from the reported prevalence of SLOS. In contrast the most common mutation in Mediterranean SLOS patients (p.Thr93Met) had a low population frequency. Haplotypes were constructed for SLOS chromosomes, and for wild-type chromosomes of African and European origins using eight cSNPs in the DHCR7 gene. The DHCR7 orthologue was sequenced in eight chimpanzees (Pan troglodytes) and three microsatellites were analysed in 50 of the SLOS families in order to estimate the age of the three major SLOS-causing mutations. CONCLUSIONS The results indicate a time of first appearance of c.964-1G>C and p.Trp151X some 3000 years ago in North-West and North-East Europe, respectively. The p.Thr93Met mutations on the J haplotype has probably first arisen approximately 6000 years ago in the Eastern Mediterranean. Together, it appears that a combination of founder effects, recurrent mutations, and drift have shaped the present frequency distribution of DHCR7 mutations in Europe.
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Affiliation(s)
- M Witsch-Baumgartner
- Department of Medical Genetics, Molecular and Clinical Pharmacology, Medical University Innsbruck, Schoepfstrasse 41, 6020 Innsbruck, Austria.
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Kaminska-Winciorek G, Brzezinska-Wcisło L, Jezela-Stanek A, Krajewska-Walasek M, Cunningham D, Herman GE. CHILD syndrome: clinical picture and diagnostic procedures. J Eur Acad Dermatol Venereol 2007; 21:715-6. [PMID: 17448011 DOI: 10.1111/j.1468-3083.2006.02015.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Ciara E, Popowska E, Piekutowska-Abramczuk D, Jurkiewicz D, Borucka-Mankiewicz M, Kowalski P, Goryluk-Kozakiewicz B, Nowaczyk MJM, Krajewska-Walasek M. SLOS carrier frequency in Poland as determined by screening for Trp151X and Val326Leu DHCR7 mutations. Eur J Med Genet 2006; 49:499-504. [PMID: 16497572 DOI: 10.1016/j.ejmg.2006.01.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [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: 05/19/2005] [Accepted: 01/17/2006] [Indexed: 11/19/2022]
Abstract
Smith-Lemli-Opitz syndrome (SLOS) is an autosomal recessive disorder of cholesterol biosynthesis caused by mutations in the DHCR7 gene. Previous studies estimated the prevalence of SLOS between 1 in 10,000 to 1 in 70,358 based on case frequency surveys. Although panethnic, SLOS appears to be most frequent in Central European populations (Czech Republic 1 in 10,000, Slovakia 1 in 15,000 - 1 in 20,000). In Polish individuals with SLOS two DHCR7 mutations, c.452G>A (p.Trp151X) and c.976G>T (p.Val326Leu), account for 65.2% of all observed DHCR7 mutations. We analyzed 2169 samples for the p.Trp151X mutation and 2087 for the p.Val326Leu mutation. The combined carrier frequency of these two mutations of was 2.40+/-0.32%, yielding a calculated incidence of SLOS in Poland of 2.5 4x10(-4)-4.3 5x10(-4) (1 in 2,300 to 1 in 3,937) placing SLOS among the most common recessive genetic disorders in Poland.
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Affiliation(s)
- E Ciara
- Department of Medical Genetics, Children's Memorial Health Institute, Al. Dzieci Polskich 20, 04-730 Warsaw, Poland.
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