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Proskorovski-Ohayon R, Eskin-Schwartz M, Shorer Z, Kadir R, Halperin D, Drabkin M, Yogev Y, Aharoni S, Hadar N, Cohen H, Eremenko E, Perez Y, Birk OS. ZNF142 mutation causes sex-dependent neurologic disorder. J Med Genet 2024; 61:566-577. [PMID: 38296634 DOI: 10.1136/jmg-2023-109447] [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: 06/22/2023] [Accepted: 01/16/2024] [Indexed: 02/02/2024]
Abstract
BACKGROUND Sex-specific predilection in neurological diseases caused by mutations in autosomal genes is a phenomenon whose molecular basis is poorly understood. We studied females of consanguineous Bedouin kindred presenting with severe global developmental delay and epilepsy. METHODS Linkage analysis, whole exome sequencing, generation of CRISPR/cas9 knock-in mice, mouse behaviour and molecular studies RESULTS: Linkage analysis and whole exome sequencing studies of the affected kindred delineated a ~5 Mbp disease-associated chromosome 2q35 locus, containing a novel homozygous frameshift truncating mutation in ZNF142, in line with recent studies depicting similar ZNF142 putative loss-of-function human phenotypes with female preponderance. We generated knock-in mice with a truncating mutation adjacent to the human mutation in the mouse ortholog. Behaviour studies of homozygous Zfp142R1508* mice showed significant phenotype only in mutant females, with learning and memory deficits, hyperactivity and aberrant loss of fear of open spaces. Bone marrow and spleen of homozygous Zfp142R1508* mice showed depletion of lymphoid and haematopoietic cells, mostly in females. RT-PCR showed lower expression of Zpf142 in brain compartments of female versus male wild-type mice. RNA-seq studies of hippocampus, hypothalamus, cortex and cerebellum of female wild-type versus homozygous Zfp142R1508* mice demonstrated differentially expressed genes. Notably, expression of Taok1 in the cortex and of Mllt6 in the hippocampus was downregulated in homozygous Zfp142R1508* mice. Taok1 mutations have been associated with aberrant neurodevelopment and behaviour. Mllt6 expression is regulated by sex hormones and Mllt6 null-mutant mice present with haematopoietic, immune system and female-specific behaviour phenotypes. CONCLUSION ZNF142 mutation downregulates Mllt6 and Taok1, causing a neurodevelopmental phenotype in humans and mice with female preponderance.
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Affiliation(s)
- Regina Proskorovski-Ohayon
- The Morris Kahn Laboratory of Human Genetics and Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Marina Eskin-Schwartz
- The Morris Kahn Laboratory of Human Genetics and Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- Institute of Human Genetics, Soroka Medical Center, Beer Sheva, Israel
| | | | - Rotem Kadir
- The Morris Kahn Laboratory of Human Genetics and Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Daniel Halperin
- The Morris Kahn Laboratory of Human Genetics and Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Max Drabkin
- The Morris Kahn Laboratory of Human Genetics and Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Yuval Yogev
- The Morris Kahn Laboratory of Human Genetics and Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Sarit Aharoni
- The Morris Kahn Laboratory of Human Genetics and Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Noam Hadar
- The Morris Kahn Laboratory of Human Genetics and Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Hagit Cohen
- Department of Psychology, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Ekaterina Eremenko
- The Morris Kahn Laboratory of Human Genetics and Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Yonatan Perez
- The Morris Kahn Laboratory of Human Genetics and Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Ohad S Birk
- The Morris Kahn Laboratory of Human Genetics and Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- Institute of Human Genetics, Soroka Medical Center, Beer Sheva, Israel
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Hadar N, Dolgin V, Oustinov K, Yogev Y, Poleg T, Safran A, Freund O, Agam N, Jean MM, Proskorovski-Ohayon R, Wormser O, Drabkin M, Halperin D, Eskin-Schwartz M, Narkis G, Sued-Hendrickson S, Aminov I, Gombosh M, Aharoni S, Birk OS. VARista: a free web platform for streamlined whole-genome variant analysis across T2T, hg38, and hg19. Hum Genet 2024; 143:695-701. [PMID: 38607411 DOI: 10.1007/s00439-024-02671-4] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 03/24/2024] [Indexed: 04/13/2024]
Abstract
With the increasing importance of genomic data in understanding genetic diseases, there is an essential need for efficient and user-friendly tools that simplify variant analysis. Although multiple tools exist, many present barriers such as steep learning curves, limited reference genome compatibility, or costs. We developed VARista, a free web-based tool, to address these challenges and provide a streamlined solution for researchers, particularly those focusing on rare monogenic diseases. VARista offers a user-centric interface that eliminates much of the technical complexity typically associated with variant analysis. The tool directly supports VCF files generated using reference genomes hg19, hg38, and the emerging T2T, with seamless remapping capabilities between them. Features such as gene summaries and links, tissue and cell-specific gene expression data for both adults and fetuses, as well as automated PCR design and integration with tools such as SpliceAI and AlphaMissense, enable users to focus on the biology and the case itself. As we demonstrate, VARista proved effective in narrowing down potential disease-causing variants, prioritizing them effectively, and providing meaningful biological context, facilitating rapid decision-making. VARista stands out as a freely available and comprehensive tool that consolidates various aspects of variant analysis into a single platform that embraces the forefront of genomic advancements. Its design inherently supports a shift in focus from technicalities to critical thinking, thereby promoting better-informed decisions in genetic disease research. Given its unique capabilities and user-centric design, VARista has the potential to become an essential asset for the genomic research community. https://VARista.link.
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Affiliation(s)
- Noam Hadar
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Vadim Dolgin
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Katya Oustinov
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Yuval Yogev
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Tomer Poleg
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Amit Safran
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ofek Freund
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Nadav Agam
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Matan M Jean
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Regina Proskorovski-Ohayon
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ohad Wormser
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Max Drabkin
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Daniel Halperin
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Marina Eskin-Schwartz
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel
| | - Ginat Narkis
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel
| | - Sufa Sued-Hendrickson
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ilana Aminov
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Maya Gombosh
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Sarit Aharoni
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ohad S Birk
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.
- Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel.
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Hadar N, Porgador O, Cohen I, Levi H, Dolgin V, Yogev Y, Sued-Hendrickson S, Shelef I, Didkovsky E, Eskin-Schwartz M, Birk OS. Heterozygous THBS2 pathogenic variant causes Ehlers-Danlos syndrome with prominent vascular features in humans and mice. Eur J Hum Genet 2024; 32:550-557. [PMID: 38433265 PMCID: PMC11061164 DOI: 10.1038/s41431-024-01559-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/17/2023] [Accepted: 01/30/2024] [Indexed: 03/05/2024] Open
Abstract
Ehlers-Danlos syndromes (EDS) are a group of connective tissue disorders caused by mutations in collagen and collagen-interacting genes. We delineate a novel form of EDS with vascular features through clinical and histopathological phenotyping and genetic studies of a three-generation pedigree, displaying an apparently autosomal dominant phenotype of joint hypermobility and frequent joint dislocations, atrophic scarring, prolonged bleeding time and age-related aortic dilatation and rupture. Coagulation tests as well as platelet counts and function were normal. Reticular dermis displayed highly disorganized collagen fibers and transmission electron microscopy (TEM) revealed abnormally shaped fibroblasts and endothelial cells, with high amount and irregular shape of extracellular matrix (ECM) substance, especially near blood vessels. Genetic analysis unraveled a heterozygous mutation in THBS2 (NM_003247.5:c.2686T>C, p.Cys896Arg). We generated CRISPR/Cas9 knock-in (KI) mice, bearing the heterozygous human mutation in the mouse ortholog. The KI mice demonstrated phenotypic traits correlating with those observed in the human subjects, as evidenced by morphologic, histologic, and TEM analyses, in conjunction with bleeding time assays. Our findings delineate a novel form of human EDS with classical-like elements combined with vascular features, caused by a heterozygous THBS2 missense mutation. We further demonstrate a similar phenotype in heterozygous THBS2Cys896Arg KI mice, in line with previous studies in Thbs2 homozygous null-mutant mice. Notably, THBS2 encodes Thrombospondin-2, a secreted homotrimeric matricellular protein that directly binds the ECM-shaping Matrix Metalloproteinase 2 (MMP2), mediating its clearance. THBS2 loss-of-function attenuates MMP2 clearance, enhancing MMP2-mediated proteoglycan cleavage, causing ECM abnormalities similar to those seen in the human and mouse disease we describe.
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Affiliation(s)
- Noam Hadar
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Omri Porgador
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Idan Cohen
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Hilla Levi
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Vadim Dolgin
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Yuval Yogev
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Sufa Sued-Hendrickson
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ilan Shelef
- Department of Radiology, Soroka Medical Center, and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Elena Didkovsky
- Department of Pathology, Rabin Medical Center, Petah-Tikva, and Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Marina Eskin-Schwartz
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.
- Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel.
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
| | - Ohad S Birk
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel.
- Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel.
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4
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Rips J, Halstuk O, Fuchs A, Lang Z, Sido T, Gershon-Naamat S, Abu-Libdeh B, Edvardson S, Salah S, Breuer O, Hadhud M, Eden S, Simon I, Slae M, Damseh NS, Abu-Libdeh A, Eskin-Schwartz M, Birk OS, Varga J, Schueler-Furman O, Rosenbluh C, Elpeleg O, Yanovsky-Dagan S, Mor-Shaked H, Harel T. Unbiased phenotype and genotype matching maximizes gene discovery and diagnostic yield. Genet Med 2024; 26:101068. [PMID: 38193396 DOI: 10.1016/j.gim.2024.101068] [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: 08/11/2023] [Revised: 12/31/2023] [Accepted: 01/04/2024] [Indexed: 01/10/2024] Open
Abstract
PURPOSE Widespread application of next-generation sequencing, combined with data exchange platforms, has provided molecular diagnoses for countless families. To maximize diagnostic yield, we implemented an unbiased semi-automated genematching algorithm based on genotype and phenotype matching. METHODS Rare homozygous variants identified in 2 or more affected individuals, but not in healthy individuals, were extracted from our local database of ∼12,000 exomes. Phenotype similarity scores (PSS), based on human phenotype ontology terms, were assigned to each pair of individuals matched at the genotype level using HPOsim. RESULTS 33,792 genotype-matched pairs were discovered, representing variants in 7567 unique genes. There was an enrichment of PSS ≥0.1 among pathogenic/likely pathogenic variant-level pairs (94.3% in pathogenic/likely pathogenic variant-level matches vs 34.75% in all matches). We highlighted founder or region-specific variants as an internal positive control and proceeded to identify candidate disease genes. Variant-level matches were particularly helpful in cases involving inframe indels and splice region variants beyond the canonical splice sites, which may otherwise have been disregarded, allowing for detection of candidate disease genes, such as KAT2A, RPAIN, and LAMP3. CONCLUSION Semi-automated genotype matching combined with PSS is a powerful tool to resolve variants of uncertain significance and to identify candidate disease genes.
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Affiliation(s)
- Jonathan Rips
- Department of Genetics, Hadassah Medical Center, Jerusalem, Israel
| | - Orli Halstuk
- Department of Genetics, Hadassah Medical Center, Jerusalem, Israel; Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Adina Fuchs
- Department of Genetics, Hadassah Medical Center, Jerusalem, Israel; Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Ziv Lang
- Department of Genetics, Hadassah Medical Center, Jerusalem, Israel
| | - Tal Sido
- Department of Genetics, Hadassah Medical Center, Jerusalem, Israel
| | | | - Bassam Abu-Libdeh
- Department of Pediatrics & Genetics, Makassed Hospital & Al-Quds Medical School, E. Jerusalem, Palestine
| | - Simon Edvardson
- Faculty of Medicine, Hebrew University of Jerusalem, Israel; Pediatric Neurology Unit, Hadassah Medical Center, Jerusalem, Israel
| | - Somaya Salah
- Department of Genetics, Hadassah Medical Center, Jerusalem, Israel
| | - Oded Breuer
- Faculty of Medicine, Hebrew University of Jerusalem, Israel; Pediatric Pulmonology and CF Unit, Department of Pediatrics, Hadassah Medical Center, Jerusalem, Israel
| | - Mohamad Hadhud
- Faculty of Medicine, Hebrew University of Jerusalem, Israel; Pediatric Pulmonology and CF Unit, Department of Pediatrics, Hadassah Medical Center, Jerusalem, Israel
| | - Sharon Eden
- Institute of Medical Research Israel-Canada, Faculty of Medicine, The Hebrew University, Jerusalem, Israel
| | - Itamar Simon
- Institute of Medical Research Israel-Canada, Faculty of Medicine, The Hebrew University, Jerusalem, Israel
| | - Mordechai Slae
- Pediatric Gastroenterology Unit, Department of Pediatrics, Hadassah Medical Center, Jerusalem, Israel
| | - Nadirah S Damseh
- Department of Pediatrics & Genetics, Makassed Hospital & Al-Quds Medical School, E. Jerusalem, Palestine
| | - Abdulsalam Abu-Libdeh
- Department of Pediatrics & Genetics, Makassed Hospital & Al-Quds Medical School, E. Jerusalem, Palestine; Division of Pediatric Endocrinology, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - Marina Eskin-Schwartz
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel; Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel
| | - Ohad S Birk
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel; Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel
| | - Julia Varga
- Microbiology and Molecular Genetics, Institute for Biomedical Research Israel-Canada, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Ora Schueler-Furman
- Microbiology and Molecular Genetics, Institute for Biomedical Research Israel-Canada, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | | | - Orly Elpeleg
- Department of Genetics, Hadassah Medical Center, Jerusalem, Israel; Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | | | - Hagar Mor-Shaked
- Department of Genetics, Hadassah Medical Center, Jerusalem, Israel; Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Tamar Harel
- Department of Genetics, Hadassah Medical Center, Jerusalem, Israel; Faculty of Medicine, Hebrew University of Jerusalem, Israel.
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Eskin-Schwartz M, Dolgin V, Didkovsky E, Aminov I, Pikovsky A, Hadar N, Kristal E, Ling G, Cohen I, Zilberman U, Birk OS. CLDN1 Arg81His founder variant causes ichthyosis, leukocyte vacuoles, alopecia, and sclerosing cholangitis (ILVASC) syndrome in Moroccan Jews. Clin Genet 2024; 105:44-51. [PMID: 37814412 DOI: 10.1111/cge.14432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 09/17/2023] [Accepted: 09/26/2023] [Indexed: 10/11/2023]
Abstract
Neonatal ichthyosis and sclerosing cholangitis syndrome (NISCH), also known as ichthyosis, leukocyte vacuoles, alopecia, and sclerosing cholangitis (ILVASC), is an extremely rare disease of autosomal recessive inheritance, resulting from loss of function of the tight junction protein claudin-1. Its clinical presentation is highly variable, and is characterized by liver and ectodermal involvement. Although most ILVASC cases described to date were attributed to homozygous truncating variants in CLDN1, a single missense variant CLDN1 p.Arg81His, associated with isolated skin ichthyosis phenotype, has been recently reported in a family of Moroccan Jewish descent. We now describe seven patients with ILVASC, originating from four non consanguineous families of North African Jewish ancestry (including one previously reported family), harboring CLDN1 p.Arg81His variant, and broaden the phenotypic spectrum attributed to this variant to include teeth, hair, and liver/bile duct involvement, characteristic of ILVASC. Furthermore, we provide additional evidence for pathogenicity of the CLDN1 p.Arg81His variant by transmission electron microscopy of the affected skin, revealing distorted tight junction architecture, and show through haplotype analysis in the vicinity of the CLDN1 gene, that this variant represents a founder variant in Jews of Moroccan descent with an estimated carrier frequency of 1:220.
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Affiliation(s)
- Marina Eskin-Schwartz
- Soroka University Medical Center, Genetics Institute, Beer-Sheva, Israel
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Vadim Dolgin
- The Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Elena Didkovsky
- Rabin Medical Center, Institute of Pathology, Petah Tiqwa, Israel
| | - Ilana Aminov
- The Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Anna Pikovsky
- Oral Medicine Unit, Department of Oral and Maxillofacial Surgery, Soroka University Medical Center, Beer-Sheva, Israel
| | - Noam Hadar
- The Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Eyal Kristal
- Saban Pediatric Medical Center, Beer-Sheva, Israel
| | - Galina Ling
- Saban Pediatric Medical Center, Beer-Sheva, Israel
- Pediatric Gastroenterology Unit, Beer-Sheva, Israel
| | - Idan Cohen
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Uri Zilberman
- Pediatric Dental Unit, Barzilai Medical Center, Ashkelon, Israel
| | - Ohad S Birk
- Soroka University Medical Center, Genetics Institute, Beer-Sheva, Israel
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- The Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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6
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Peled A, Sarig O, Mohamad J, Eskin-Schwartz M, Vodo D, Bochner R, Malchin N, Isakov O, Shomron N, Fainberg G, Bertolini M, Paus R, Sprecher E. Dominant frontonasal dysplasia with ectodermal defects results from increased activity of ALX4. Am J Med Genet A 2023; 191:2806-2812. [PMID: 37724761 DOI: 10.1002/ajmg.a.63408] [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: 06/02/2023] [Revised: 08/18/2023] [Accepted: 09/05/2023] [Indexed: 09/21/2023]
Abstract
Frontonasal dysplasia (FND) refers to a group of rare developmental disorders characterized by abnormal morphology of the craniofacial region. We studied a family manifesting with clinical features typical for FND2 including neurobehavioral abnormalities, hypotrichosis, hypodontia, and facial dysmorphism. Whole-exome sequencing analysis identified a novel heterozygous frameshift insertion in ALX4 (c.985_986insGTGC, p.Pro329Argfs*115), encoding aristaless homeobox 4. This and a previously reported dominant FND2-causing variant are predicted to result in the formation of a similar abnormally elongated protein tail domain. Using a reporter assay, we showed that the elongated ALX4 displays increased activity. ALX4 negatively regulates the Wnt/β-catenin pathway and accordingly, patient keratinocytes showed altered expression of genes associated with the WNT/β-catenin pathway, which in turn may underlie ectodermal manifestations in FND2. In conclusion, dominant FND2 with ectodermal dysplasia results from frameshift variants in ALX4 exerting a gain-of-function effect.
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Affiliation(s)
- Alon Peled
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Ofer Sarig
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Janan Mohamad
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
- Department of Human Molecular Genetics and Biochemistry, Tel-Aviv University, Tel Aviv, Israel
| | - Marina Eskin-Schwartz
- Faculty of Health Sciences, Ben Gurion University of the Negev, Be'er Sheva, Israel
- Soroka University Medical Center, Genetic Institute, Be'er Sheva, Israel
| | - Dan Vodo
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Ron Bochner
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Natalya Malchin
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Ofer Isakov
- Rabin Medical Center, Raphael Recanati Genetic Institute, Petach Tikva, Israel
- Clalit Research Institute, Clalit Health Services, Ramat Gan, Israel
- The Ivan and Francesca Berkowitz Family Living Laboratory Collaboration at Harvard Medical School and Clalit Research Institute, Boston, Massachusetts, USA
| | - Noam Shomron
- Department of Human Molecular Genetics and Biochemistry, Tel-Aviv University, Tel Aviv, Israel
| | - Gilad Fainberg
- Department of Ophthalmology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Marta Bertolini
- Department of Dermatology, University of Münster, Münster, Germany
- Monasterium Laboratory, Nano-Bioanalytik Zentrum, Münster, Germany
| | - Ralf Paus
- Monasterium Laboratory, Nano-Bioanalytik Zentrum, Münster, Germany
- Dr Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Florida, USA
- Centre for Dermatology Research, Institute of Inflammation and Repair, University of Manchester, Manchester, UK
| | - Eli Sprecher
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
- Department of Human Molecular Genetics and Biochemistry, Tel-Aviv University, Tel Aviv, Israel
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7
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Poleg T, Eskin-Schwartz M, Proskorovski-Ohayon R, Aminov I, Dolgin V, Agam N, Jean M, Safran A, Freund O, Levitas A, Konstantino Y, Birk OS, Westreich R, Haim M. Compound Heterozygosity for Late-Onset Cardiomyopathy-Causative ALPK3 Coding Variant and Novel Intronic Variant Cause Infantile Hypertrophic Cardiomyopathy. J Cardiovasc Transl Res 2023; 16:1325-1331. [PMID: 37973666 DOI: 10.1007/s12265-023-10461-y] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 11/03/2023] [Indexed: 11/19/2023]
Abstract
Hypertrophic and dilated cardiomyopathy (HCM, DCM) are leading causes of cardiovascular morbidity and mortality in children. The pseudokinase alpha-protein kinase 3 (ALPK3) plays an essential role in sarcomere organization and cardiomyocyte differentiation. ALPK3 coding mutations are causative of recessively inherited pediatric-onset DCM and HCM with variable expression of facial dysmorphism and skeletal abnormalities and implicated in dominantly inherited adult-onset cardiomyopathy. We now report two variants in ALPK3-a coding variant and a novel intronic variant affecting splicing. We demonstrate that compound heterozygosity for both variants is highly suggestive to be causative of infantile-onset HCM with webbed neck, and heterozygosity for the coding variant presents with adult-onset HCM. Our data validate partial penetrance of heterozygous loss-of-function ALPK3 mutations in late-onset hypertrophic cardiomyopathy and expand the genotypic spectrum of autosomal recessive ALPK3-related cardiac disease with Noonan-like features.
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Affiliation(s)
- Tomer Poleg
- The Morris Kahn Laboratory of Human Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Marina Eskin-Schwartz
- The Morris Kahn Laboratory of Human Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- Genetics Institute, Soroka University Medical Center, Beer Sheva, Israel
| | - Regina Proskorovski-Ohayon
- The Morris Kahn Laboratory of Human Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ilana Aminov
- The Morris Kahn Laboratory of Human Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Vadim Dolgin
- The Morris Kahn Laboratory of Human Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Nadav Agam
- The Morris Kahn Laboratory of Human Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Matan Jean
- The Morris Kahn Laboratory of Human Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Amit Safran
- The Morris Kahn Laboratory of Human Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ofek Freund
- The Morris Kahn Laboratory of Human Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Aviva Levitas
- Department of Pediatric Cardiology, Soroka University Medical Center, affiliated to the Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Yuval Konstantino
- Department of Cardiology, Cardiac Electrophysiology and Pacing, Soroka University Medical Center, affiliated to the Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ohad S Birk
- The Morris Kahn Laboratory of Human Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.
- Genetics Institute, Soroka University Medical Center, Beer Sheva, Israel.
| | - Roi Westreich
- Department of Cardiology, Cardiac Electrophysiology and Pacing, Soroka University Medical Center, affiliated to the Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Moti Haim
- Department of Cardiology, Cardiac Electrophysiology and Pacing, Soroka University Medical Center, affiliated to the Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
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8
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Bergson S, Daniely D, Bomze D, Mohamad J, Malovitski K, Meijers O, Briskin V, Bihari O, Malchin N, Israeli S, Mashiah J, Falik-Zaccai T, Avitan-Hersh E, Eskin-Schwartz M, Allon-Shalev S, Sarig O, Sprecher E, Samuelov L. Clinical and molecular features in a cohort of Middle Eastern patients with epidermolysis bullosa. Pediatr Dermatol 2023; 40:1021-1027. [PMID: 37827535 DOI: 10.1111/pde.15440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 09/10/2023] [Indexed: 10/14/2023]
Abstract
BACKGROUND Epidermolysis bullosa (EB) features skin and mucosal fragility due to pathogenic variants in genes encoding components of the cutaneous basement membrane. Based on the level of separation within the dermal-epidermal junction, EB is sub-classified into four major types including EB simplex (EBS), junctional EB (JEB), dystrophic EB (DEB), and Kindler EB (KEB) with 16 EB-associated genes reported to date. METHODS We ascertained a cohort of 151 EB patients of various Middle Eastern ethnic backgrounds. RESULTS The cohort was comprised of EBS (64%, 97/151), DEB (21%, 31/151), JEB (12%, 18/151), and KEB (3%, 5/151). KRT14 and KRT5 variants were most common among EBS patients with 43% (42/97) and 46% (45/97) of EBS patients carrying mutations in either of these two genes, respectively. Truncal involvement was more common in KRT14-associated EBS as compared to EBS due to KRT5 mutations (p < .05). Mutations in COL17A1 and laminin 332-encoding genes were identified in 55% (10/18) and 45% (8/18) of JEB patients. Scarring alopecia, caries, and EB nevi were most common among JEB patients carrying COL17A1 mutations as compared to laminin 332-associated JEB (p < .05). Abnormal nails were evident in most DEB and JEB patients while poikiloderma was exclusively observed in KEB (p < .001). CONCLUSIONS EB patients of Middle Eastern origin were found to feature specific phenotype-genotype correlations of relevance to the diagnosis and genetic counseling of patients in this region.
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Affiliation(s)
- Shir Bergson
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Daniel Daniely
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - David Bomze
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Janan Mohamad
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Kiril Malovitski
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Odile Meijers
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Valeria Briskin
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Ofer Bihari
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Natalia Malchin
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Shirli Israeli
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Jacob Mashiah
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Tzipora Falik-Zaccai
- Institute of Human Genetics, Galilee Medical Center, Nahariya, Israel
- The Azrieli Faculty of Medicine, Bar Ilan University, Safed, Israel
| | - Emily Avitan-Hersh
- Department of Dermatology, Rambam Health Care Campus, Haifa, Israel
- Bruce and Ruth Rappaport Faculty of Medicine, Haifa, Israel
| | - Marina Eskin-Schwartz
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel
| | - Stavit Allon-Shalev
- Bruce and Ruth Rappaport Faculty of Medicine, Haifa, Israel
- The Genetic Institute, Emek Medical Center, Afula, Israel
| | - Ofer Sarig
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Eli Sprecher
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Liat Samuelov
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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9
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Hadar N, Schreiber R, Eskin-Schwartz M, Kristal E, Shubinsky G, Ling G, Cohen I, Geylis M, Nahum A, Yogev Y, Birk OS. X-linked C1GALT1C1 mutation causes atypical hemolytic uremic syndrome. Eur J Hum Genet 2023; 31:1101-1107. [PMID: 36599939 PMCID: PMC10545727 DOI: 10.1038/s41431-022-01278-5] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 12/11/2022] [Accepted: 12/15/2022] [Indexed: 01/05/2023] Open
Abstract
Hemolytic-uremic syndrome (HUS), mostly secondary to infectious diseases, is a common cause of acute kidney injury in children. It is characterized by progressive acute kidney failure due to severe thrombotic microangiopathy, associated with nonimmune, Coombs-negative hemolytic anemia and thrombocytopenia. HUS is caused mostly by Shiga toxin-producing E. Coli, and to a lesser extent by Streptococcus pneumonia. In Streptococcus pneumonia HUS (pHUS), bacterial neuraminidase A exposes masked O-glycan sugar residues on erythrocytes, known as the T antigen, triggering a complement cascade causing thrombotic microangiopathy. Atypical HUS (aHUS) is a life-threatening genetic form of the disease, whose molecular mechanism is only partly understood. Through genetic studies, we demonstrate a novel X-linked form of aHUS that is caused by a de-novo missense mutation in C1GALT1C1:c.266 C > T,p.(T89I), encoding a T-synthase chaperone essential for the proper formation and incorporation of the T antigen on erythrocytes. We demonstrate the presence of exposed T antigen on the surface of mutant erythrocytes, causing aHUS in a mechanism similar to that suggested in pHUS. Our findings suggest that both aHUS caused by mutated C1GALT1C1 and pHUS are mediated by the lectin-complement-pathway, not comprehensively studied in aHUS. We thus delineate a shared molecular basis of aHUS and pHUS, highlighting possible therapeutic opportunities.
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Affiliation(s)
- Noam Hadar
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ruth Schreiber
- Pediatric Nephrology Clinic and Pediatric Department A, Soroka University Medical Center, Beer-Sheva, Israel
| | - Marina Eskin-Schwartz
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel
| | - Eyal Kristal
- Pediatric Ambulatory Unit, Soroka University Medical Center, Beer-Sheva, Israel
| | - George Shubinsky
- Flow Cytometry Unit, Soroka University Medical Center, Beer-Sheva, Israel
| | - Galina Ling
- Pediatric Ambulatory Unit, Soroka University Medical Center, Beer-Sheva, Israel
| | - Idan Cohen
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Michael Geylis
- Pediatric Nephrology Clinic and Pediatric Department A, Soroka University Medical Center, Beer-Sheva, Israel
| | - Amit Nahum
- Pediatric Nephrology Clinic and Pediatric Department A, Soroka University Medical Center, Beer-Sheva, Israel
- The Primary Immunodeficiency Research Laboratory and Pediatric Department A, Soroka University Medical Center, Beer Sheva, Israel
| | - Yuval Yogev
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ohad S Birk
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.
- Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel.
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel.
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10
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Safran A, Proskorovski-Ohayon R, Eskin-Schwartz M, Yogev Y, Drabkin M, Eremenko E, Aharoni S, Freund O, Jean MM, Agam N, Hadar N, Loewenthal N, Staretz-Chacham O, Birk OS. Hyperinsulinism/hyperammonemia syndrome caused by biallelic SLC25A36 mutation. J Inherit Metab Dis 2023; 46:744-755. [PMID: 36695547 DOI: 10.1002/jimd.12594] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 01/06/2023] [Accepted: 01/19/2023] [Indexed: 01/26/2023]
Abstract
Hyperinsulinism/hyperammonemia (HI/HA) syndrome has been known to be caused by dominant gain-of-function mutations in GLUD1, encoding the mitochondrial enzyme glutamate dehydrogenase. Pathogenic GLUD1 mutations enhance enzymatic activity by reducing its sensitivity to allosteric inhibition by GTP. Two recent independent studies showed that a similar HI/HA phenotype can be caused by biallelic mutations in SLC25A36, encoding pyrimidine nucleotide carrier 2 (PNC2), a mitochondrial nucleotide carrier that transports pyrimidine and guanine nucleotides across the inner mitochondrial membrane: one study reported a single case caused by a homozygous truncating mutation in SLC25A36 resulting in lack of expression of SLC25A36 in patients' fibroblasts. A second study described two siblings with a splice site mutation in SLC25A36, causing reduction of mitochondrial GTP content, putatively leading to hyperactivation of glutamate dehydrogenase. In an independent study, through combined linkage analysis and exome sequencing, we demonstrate in four individuals of two Bedouin Israeli related families the same disease-causing SLC25A36 (NM_018155.3) c.284 + 3A > T homozygous splice-site mutation found in the two siblings. We demonstrate that the mutation, while causing skipping of exon 3, does not abrogate expression of mRNA and protein of the mutant SLC25A36 in patients' blood and fibroblasts. Affected individuals had hyperinsulinism, hyperammonemia, borderline low birth weight, tonic-clonic seizures commencing around 6 months of age, yet normal intellect and no significant other morbidities. Chronic constipation, hypothyroidism, and developmental delay previously described in a single patient were not found. We thus verify that biallelic SLC25A36 mutations indeed cause HI/HA syndrome and clearly delineate the disease phenotype.
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Affiliation(s)
- Amit Safran
- Morris Kahn Laboratory of Human Genetics at the Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben Gurion University, Beer Sheva, Israel
| | - Regina Proskorovski-Ohayon
- Morris Kahn Laboratory of Human Genetics at the Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben Gurion University, Beer Sheva, Israel
| | - Marina Eskin-Schwartz
- Morris Kahn Laboratory of Human Genetics at the Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben Gurion University, Beer Sheva, Israel
- Genetics Institute, Soroka Medical Center, Beer Sheva, Israel
| | - Yuval Yogev
- Morris Kahn Laboratory of Human Genetics at the Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben Gurion University, Beer Sheva, Israel
| | - Max Drabkin
- Morris Kahn Laboratory of Human Genetics at the Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben Gurion University, Beer Sheva, Israel
| | - Ekaterina Eremenko
- Department of Life Sciences and Shraga Segal Department of Microbiology, Immunology and Genetics, National Institute of Biotechnology in the Negev, Zlotowski Neuroscience Center and the Regenerative Medicine and Stem Cell Research Center, Ben-Gurion University, Beer Sheva, Israel
| | - Sarit Aharoni
- Morris Kahn Laboratory of Human Genetics at the Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben Gurion University, Beer Sheva, Israel
| | - Ofek Freund
- Morris Kahn Laboratory of Human Genetics at the Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben Gurion University, Beer Sheva, Israel
| | - Matan M Jean
- Morris Kahn Laboratory of Human Genetics at the Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben Gurion University, Beer Sheva, Israel
| | - Nadav Agam
- Morris Kahn Laboratory of Human Genetics at the Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben Gurion University, Beer Sheva, Israel
| | - Noam Hadar
- Morris Kahn Laboratory of Human Genetics at the Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben Gurion University, Beer Sheva, Israel
| | - Neta Loewenthal
- Pediatric Endocrinology Unit, Pediatric Division, Soroka Medical Center, Beer Sheva, Israel
- Faculty of Health Sciences, Ben Gurion University, Beer Sheva, Israel
| | - Orna Staretz-Chacham
- Faculty of Health Sciences, Ben Gurion University, Beer Sheva, Israel
- Pediatric Metabolic Clinic, Pediatric Division, Soroka Medical Center, Ben-Gurion University, Beer Sheva, Israel
| | - Ohad S Birk
- Morris Kahn Laboratory of Human Genetics at the Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben Gurion University, Beer Sheva, Israel
- Genetics Institute, Soroka Medical Center, Beer Sheva, Israel
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11
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Eskin-Schwartz M, Mashkit E, Birk OS. [MULTIPLE CAFÉ-AU-LAIT MACULES AND INTERTRIGINOUS FRECKLING: BEYOND THE RASOPATHIES]. Harefuah 2023; 162:362-365. [PMID: 37394438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
INTRODUCTION Piebaldism is the dominantly inherited skin disorder clinically characterized by congenital stable and well circumscribed patches of leukoderma (depigmented skin) of ventral distribution, involving central forehead, frontal chest and abdomen and central portion of limbs, and by localized poliosis (white hair). Inherited or de novo mutations in proto-oncogene KIT, encoding the transmembrane tyrosine kinase receptor c-kit, underly the majority of piebaldism cases. Piebaldism is a disorder characterized by incomplete penetrance and variable expressivity.
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Affiliation(s)
- Marina Eskin-Schwartz
- Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Elena Mashkit
- Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel
| | - Ohad S Birk
- Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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12
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Malovitski K, Sarig O, Assaf S, Mohamad J, Bergson S, Peled A, Eskin-Schwartz M, Gat A, Pavlovsky M, Sprecher E. 259 KLF4 variants: a novel cause of palmoplantar keratoderma. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.271] [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: 11/19/2022]
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13
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Basmanav FB, Cesarato N, Kumar S, Borisov O, Kokordelis P, Ralser DJ, Wehner M, Axt D, Xiong X, Thiele H, Dolgin V, Gossmann Y, Fricker N, Dewenter MK, Weller K, Suri M, Reichenbach H, Oji V, Addor MC, Ramirez K, Stewart H, Garcia Bartels N, Weibel L, Wagner N, George S, Kilic A, Tantcheva-Poor I, Stewart A, Dikow N, Blaumeiser B, Medvecz M, Blume-Peytavi U, Farrant P, Grimalt R, Bertok S, Bradley L, Eskin-Schwartz M, Birk OS, Bygum A, Simon M, Krawitz P, Fischer C, Hamm H, Fritz G, Betz RC. Assessment of the Genetic Spectrum of Uncombable Hair Syndrome in a Cohort of 107 Individuals. JAMA Dermatol 2022; 158:1245-1253. [PMID: 36044230 PMCID: PMC9434486 DOI: 10.1001/jamadermatol.2022.2319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 04/29/2022] [Indexed: 11/14/2022]
Abstract
Importance Uncombable hair syndrome (UHS) is a rare hair shaft anomaly that manifests during infancy and is characterized by dry, frizzy, and wiry hair that cannot be combed flat. Only about 100 known cases have been reported so far. Objective To elucidate the genetic spectrum of UHS. Design, Setting, and Participants This cohort study includes 107 unrelated index patients with a suspected diagnosis of UHS and family members who were recruited worldwide from January 2013 to December 2021. Participants of all ages, races, and ethnicities were recruited at referral centers or were enrolled on their own initiative following personal contact with the authors. Genetic analyses were conducted in Germany from January 2014 to December 2021. Main Outcomes and Measures Clinical photographs, Sanger or whole-exome sequencing and array-based genotyping of DNA extracted from blood or saliva samples, and 3-dimensional protein modeling. Descriptive statistics, such as frequency counts, were used to describe the distribution of identified pathogenic variants and genotypes. Results The genetic characteristics of patients with UHS were established in 80 of 107 (74.8%) index patients (82 [76.6%] female) who carried biallelic pathogenic variants in PADI3, TGM3, or TCHH (ie, genes that encode functionally related hair shaft proteins). Molecular genetic findings from 11 of these 80 individuals were previously published. In 76 (71.0%) individuals, the UHS phenotype were associated with pathogenic variants in PADI3. The 2 most commonly observed PADI3 variants account for 73 (48.0%) and 57 (37.5%) of the 152 variant PADI3 alleles in total, respectively. Two individuals carried pathogenic variants in TGM3, and 2 others carried pathogenic variants in TCHH. Haplotype analyses suggested a founder effect for the 4 most commonly observed pathogenic variants in the PADI3 gene. Conclusions and Relevance This cohort study extends and gives an overview of the genetic variant spectrum of UHS based on molecular genetic analyses of the largest worldwide collective of affected individuals, to our knowledge. Formerly, a diagnosis of UHS could only be made by physical examination of the patient and confirmed by microscopical examination of the hair shaft. The discovery of pathogenic variants in PADI3, TCHH, and TGM3 may open a new avenue for clinicians and affected individuals by introducing molecular diagnostics for UHS.
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Affiliation(s)
- F. Buket Basmanav
- Institute of Human Genetics, Medical Faculty & University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Nicole Cesarato
- Institute of Human Genetics, Medical Faculty & University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Sheetal Kumar
- Institute of Human Genetics, Medical Faculty & University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Oleg Borisov
- Institute for Genomic Statistics and Bioinformatics, Medical Faculty & University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Pavlos Kokordelis
- Institute of Human Genetics, Medical Faculty & University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Damian J. Ralser
- Institute of Human Genetics, Medical Faculty & University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Maria Wehner
- Institute of Human Genetics, Medical Faculty & University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Daisy Axt
- Institute of Human Genetics, Medical Faculty & University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Xing Xiong
- Institute of Human Genetics, Medical Faculty & University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Holger Thiele
- Cologne Center for Genomics, University of Cologne, Cologne, Germany
| | - Vadim Dolgin
- Genetics Institute at Soroka University Medical Center, Beer-Sheva, Israel
- Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases at the Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Yasmina Gossmann
- Institute of Human Genetics, Medical Faculty & University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Nadine Fricker
- Institute of Human Genetics, Medical Faculty & University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Malin Katharina Dewenter
- Institute of Human Genetics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Karsten Weller
- Department of Dermatology, Venereology and Allergology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Mohnish Suri
- Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust, City Hospital Campus, Nottingham, England, United Kingdom
| | - Herbert Reichenbach
- MVZ Mitteldeutscher Praxisverbund Humangenetik, Praxis Leipzig, Leipzig, Germany
| | - Vinzenz Oji
- Department of Dermatology, University of Münster, Münster, Germany
| | - Marie-Claude Addor
- Department of Woman-Mother-Child, University Hospital Center CHUV CH 1011, Lausanne, Switzerland
| | - Karla Ramirez
- Neurología Pediátrica, Division de Pediatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Helen Stewart
- Oxford Centre for Genomic Medicine, Oxford University Hospitals NHS Foundation Trust, Oxford, England, United Kingdom
| | - Natalie Garcia Bartels
- Department of Dermatology, Venereology and Allergology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Lisa Weibel
- Pediatric Dermatology Department, University Children’s Hospital Zurich, University Hospital Zurich, Zurich, Switzerland
- Dermatology Department, University Hospital Zurich, Zurich, Switzerland
| | - Nicola Wagner
- Department of Dermatology, Universitätsklinikum Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Susannah George
- Dermatology Department, Brighton General Hospital, University Hospitals Sussex NHS Foundation Trust, Brighton, England, United Kingdom
| | - Arzu Kilic
- Department of Dermatology, Faculty of Medicine, Balıkesir University, Balıkesir, Turkey
| | - Iliana Tantcheva-Poor
- Department of Dermatology and Venereology, University Hospital of Cologne, Cologne, Germany
| | - Alison Stewart
- Sheffield Clinical Genetics Service, Sheffield Children’s Hospital, South Yorkshire, England, United Kingdom
| | - Nicola Dikow
- Institute of Human Genetics, Heidelberg University, Heidelberg, Germany
| | | | - Márta Medvecz
- Department of Dermatology, Venereology, and Dermatooncology, Semmelweis University, Budapest, Hungary
| | - Ulrike Blume-Peytavi
- Department of Dermatology, Venereology and Allergology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Paul Farrant
- Dermatology Department, Brighton General Hospital, University Hospitals Sussex NHS Foundation Trust, Brighton, England, United Kingdom
| | - Ramon Grimalt
- Universitat Internacional de Catalunya, Barcelona, Spain
| | - Sara Bertok
- Department of Pediatric Endocrinology, Diabetes and Metabolic Diseases, University Children’s Hospital, University Medical Centre, Ljubljana, Slovenia
| | - Lisa Bradley
- Department of Clinical Genetics, Children’s Health Ireland (CHI) at Crumlin, Dublin, Ireland
| | | | - Ohad Samuel Birk
- Genetics Institute at Soroka University Medical Center, Beer-Sheva, Israel
| | - Anette Bygum
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
- Clinical Institute, University of Southern Denmark, Odense, Denmark
| | - Michel Simon
- Toulouse Institute for Infectious and Inflammatory diseases, Toulouse University, Toulouse, France
- CNRS, Inserm, Paul Sabatier Toulouse III University, Toulouse, France
| | - Peter Krawitz
- Institute for Genomic Statistics and Bioinformatics, Medical Faculty & University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Christine Fischer
- Institute of Human Genetics, Heidelberg University, Heidelberg, Germany
| | - Henning Hamm
- Department of Dermatology, Venereology, and Allergology, University Hospital Würzburg, Würzburg, Germany
| | - Günter Fritz
- Department of Cellular Microbiology, University of Hohenheim, Stuttgart, Germany
| | - Regina C. Betz
- Institute of Human Genetics, Medical Faculty & University Hospital Bonn, University of Bonn, Bonn, Germany
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14
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Aharoni S, Proskorovski-Ohayon R, Krishnan RK, Yogev Y, Wormser O, Hadar N, Bakhrat A, Alshafee I, Gombosh M, Agam N, Gradstein L, Shorer Z, Zarivach R, Eskin-Schwartz M, Abdu U, Birk OS. PSMC1 variant causes a novel neurological syndrome. Clin Genet 2022; 102:324-332. [PMID: 35861243 PMCID: PMC9541193 DOI: 10.1111/cge.14195] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 07/15/2022] [Accepted: 07/18/2022] [Indexed: 11/27/2022]
Abstract
Proteasome 26S, the eukaryotic proteasome, serves as the machinery for cellular protein degradation. It is composed of the 20S core particle and one or two 19S regulatory particles, composed of a base and a lid. To date, several human diseases have been associated with mutations within the 26S proteasome subunits; only one of them affects a base subunit. We now delineate an autosomal recessive syndrome of failure to thrive, severe developmental delay and intellectual disability, spastic tetraplegia with central hypotonia, chorea, hearing loss, micropenis and undescended testes, as well as mild elevation of liver enzymes. None of the affected individuals achieved verbal communication or ambulation. Ventriculomegaly was evident on MRI. Homozygosity mapping combined with exome sequencing revealed a disease‐associated p.I328T PSMC1 variant. Protein modeling demonstrated that the PSMC1 variant is located at the highly conserved putative ATP binding and hydrolysis domain, and is suggested to interrupt a hydrophobic core within the protein. Fruit flies in which we silenced the Drosophila ortholog Rpt2 specifically in the eye exhibited an apparent phenotype that was highly rescued by the human wild‐type PSMC1, yet only partly by the mutant PSMC1, proving the functional effect of the p.I328T disease‐causing variant.
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Affiliation(s)
- Sarit Aharoni
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Regina Proskorovski-Ohayon
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ramesh Kumar Krishnan
- Department of Life Sciences, Faculty of Natural Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel
| | - Yuval Yogev
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ohad Wormser
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Noam Hadar
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Anna Bakhrat
- Department of Life Sciences, Faculty of Natural Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel
| | - Ismael Alshafee
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Maya Gombosh
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Nadav Agam
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Libe Gradstein
- Department of Ophthalmology, Soroka University Medical Center and Clalit Health Services, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Zamir Shorer
- Pediatric Neurology Unit, Division of Pediatrics, Soroka Medical Center, Beer-sheva, Israel
| | - Raz Zarivach
- Department of Life Sciences, Faculty of Natural Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel
| | - Marina Eskin-Schwartz
- Genetics Institute, Soroka Medical Center, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Uri Abdu
- Department of Life Sciences, Faculty of Natural Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel
| | - Ohad S Birk
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.,Genetics Institute, Soroka Medical Center, Ben-Gurion University of the Negev, Beer Sheva, Israel
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15
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Malovitski K, Sarig O, Assaf S, Mohamad J, Malki L, Bergson S, Peled A, Eskin-Schwartz M, Gat A, Pavlovsky M, Sprecher E. Loss-of-function variants in KLF4 underlie autosomal dominant palmoplantar keratoderma. Genet Med 2022; 24:1085-1095. [PMID: 35168889 DOI: 10.1016/j.gim.2022.01.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 10/29/2021] [Revised: 01/09/2022] [Accepted: 01/14/2022] [Indexed: 12/11/2022] Open
Abstract
PURPOSE Palmoplantar keratodermas (PPKs) form a group of disorders characterized by thickening of palm and sole skin. Over the past 2 decades, many types of inherited PPKs have been found to result from abnormal expression, processing, or function of adhesion proteins. METHODS We used exome and direct sequencing to detect causative pathogenic variants. Functional analysis of these variants was conducted using reverse transcription quantitative polymerase chain reaction, immunofluorescence confocal microscopy, immunoblotting, a promoter reporter assay, and chromatin immunoprecipitation. RESULTS We identified 2 heterozygous variants (c.1226A>G and c.633_634dupGT) in KLF4 in 3 individuals from 2 different unrelated families affected by a dominant form of PPK. Immunofluorescence staining for a number of functional markers revealed reduced epidermal DSG1 expression in patients harboring heterozygous KLF4 variants. Accordingly, human keratinocytes either transfected with constructs expressing these variants or downregulated for KLF4 displayed reduced DSG1 expression, which in turn has previously been found to be associated with PPK. A chromatin immunoprecipitation assay confirmed direct binding of KLF4 to the DSG1 promoter region. The ability of mutant KLF4 to transactivate the DSG1 promoter was significantly decreased when compared with wild-type KLF4. CONCLUSION Loss-of-function variants in KLF4 cause a novel form of dominant PPK and show its importance in the regulation of epidermal differentiation.
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Affiliation(s)
- Kiril Malovitski
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ofer Sarig
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Sari Assaf
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Janan Mohamad
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Liron Malki
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Shir Bergson
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Alon Peled
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Marina Eskin-Schwartz
- Faculty of Health Sciences, Ben Gurion University of the Negev, Be'er Sheva, Israel; Genetic Institute, Soroka University Medical Center, Be'er Sheva, Israel
| | - Andrea Gat
- Institute of Pathology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Mor Pavlovsky
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Eli Sprecher
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
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16
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Shaki D, Eskin-Schwartz M, Hadar N, Bosin E, Carmon L, Refetoff S, Hershkovitz E, Birk OS, Haim A. TSHB R75G is a founder variant and prevalent cause of low or undetectable TSH in Indian Jews. Eur Thyroid J 2022; 11:e210072. [PMID: 34981755 PMCID: PMC9142811 DOI: 10.1530/etj-21-0072] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 11/26/2021] [Indexed: 11/11/2022] Open
Abstract
Objective Bi-allelic loss-of-function mutations in TSHB, encoding the beta subunit of thyroid-stimulating hormone (TSH), cause congenital hypothyroidism. Homozygosity for the TSHB p.R75G variant, previously described in South Asian individuals, does not alter TSH function but abrogates its detection by some immune detection-based platforms, leading to erroneous diagnosis of hyperthyroidism. We set out to identify and determine the carrier rate of the p.R75G variant among clinically euthyroid Bene Israel Indian Jews, to examine the possible founder origin of this variant worldwide, and to determine the phenotypic effects of its heterozygosity. Design Molecular genetic studies of Bene Israel Jews and comparative studies with South Asian cohort. Methods TSHB p.R75G variant tested by Sanger sequencing and restriction fragment length polymorphism (RFLP). Haplotype analysis in the vicinity of the TSHB gene performed using SNP arrays. Results Clinically euthyroid individuals with low or undetectable TSH levels from three apparently unrelated Israeli Jewish families of Bene Israel ethnicity, originating from the Mumbai region of India, were found heterozygous or homozygous for the p.R75G TSHB variant. Extremely high carrier rate of p.R75G TSHB in Bene Israel Indian Jews (~4%) was observed. A haplotype block of 239.7 kB in the vicinity of TSHB shared by Bene Israel and individuals of South Asian origin was detected. Conclusions Our findings highlight the high prevalence of the R75G TSHB variant in euthyroid Bene Israel Indian Jews, demonstrate that heterozygosity of this variant can cause erroneous detection of subnormal TSH levels, and show that R75G TSHB is an ancient founder variant, delineating shared ancestry of its carriers.
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Affiliation(s)
- David Shaki
- Pediatric Endocrinology Unit, Saban Pediatric Medical Center for Israel, Beer Sheva, Israel
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Marina Eskin-Schwartz
- Genetics Institute at Soroka University Medical Center and the Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, at the Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Noam Hadar
- Genetics Institute at Soroka University Medical Center and the Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, at the Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Emily Bosin
- Endocrinology Lab, Soroka University Medical Center, Beer Sheva, Israel
| | - Lior Carmon
- Pediatric Endocrinology Unit, Saban Pediatric Medical Center for Israel, Beer Sheva, Israel
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Samuel Refetoff
- Departments of Medicine and Pediatrics and the Committee on Genetics, The University of Chicago, Chicago, Illinois, USA
| | - Eli Hershkovitz
- Pediatric Endocrinology Unit, Saban Pediatric Medical Center for Israel, Beer Sheva, Israel
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ohad S Birk
- Genetics Institute at Soroka University Medical Center and the Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, at the Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Alon Haim
- Pediatric Endocrinology Unit, Saban Pediatric Medical Center for Israel, Beer Sheva, Israel
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
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17
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David O, Agur R, Novoa R, Shaki D, Walker D, Carmon L, Eskin-Schwartz M, Birk OS, Ling G, Schreiber R, Loewenthal N, Haim A, Hershkovitz E. Hypoparathyroidism-retardation-dysmorphism syndrome-Clinical insights from a large longitudinal cohort in a single medical center. Front Pediatr 2022; 10:916679. [PMID: 35935360 PMCID: PMC9352926 DOI: 10.3389/fped.2022.916679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 06/28/2022] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Hypoparathyroidism, retardation, and dysmorphism (HRD) Syndrome is a rare disease composed of hypoparathyroidism, retardation of both growth and development, and distinctive dysmorphic features. Here, we describe the long-term morbidity and mortality in a large cohort of HRD patients and suggest recommendations for follow up and treatment. METHODS Medical records of 63 HRD syndrome patients who were followed at Soroka Medical Center during 1989-2019 were reviewed retrospectively. Information regarding demographics, medical complications, laboratory findings, and imaging studies was collected. RESULTS The mortality rate was 52%. The main causes of death were infectious diseases including pneumonia, septic shock, and meningitis. Multiple comorbidities were found including brain anomalies in 90% of examined patients (basal ganglia calcifications, tightening of corpus callosum, Chiari malformation, hydrocephalous, and brain atrophy), seizures in 62%, nephrocalcinosis and/or nephrolithiasis in 47%, multiple eye anomalies were recorded in 40%, bowel obstructions in 9.5%, and variable expression of both conductive and senso-neural hearing loss was documented in 9.5%. CONCLUSION HRD is a severe multisystem disease. Active surveillance is indicated to prevent and treat complications associated with this rare syndrome.
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Affiliation(s)
- Odeya David
- Pediatric Endocrinology Unit, Saban Pediatric Medical Center for Israel, Soroka University Medical Center, Beer Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Rotem Agur
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Rosa Novoa
- Diagnostic Radiology Department, Soroka University Medical Center, Beer Sheva, Israel
| | - David Shaki
- Pediatric Endocrinology Unit, Saban Pediatric Medical Center for Israel, Soroka University Medical Center, Beer Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Dganit Walker
- Pediatric Endocrinology Unit, Saban Pediatric Medical Center for Israel, Soroka University Medical Center, Beer Sheva, Israel
| | - Lior Carmon
- Pediatric Endocrinology Unit, Saban Pediatric Medical Center for Israel, Soroka University Medical Center, Beer Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Marina Eskin-Schwartz
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.,Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, Faculty of Health Sciences, National Institute for Biotechnology in the Negev, Genetics Institute at Soroka University Medical Center, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ohad S Birk
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.,Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, Faculty of Health Sciences, National Institute for Biotechnology in the Negev, Genetics Institute at Soroka University Medical Center, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Galina Ling
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.,Pediatric Gastroenterology Unit, Saban Pediatric Medical Center for Israel, Soroka University Medical Center, Beer Sheva, Israel
| | - Ruth Schreiber
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.,Pediatric Nephrology Unit, Soroka University Medical Center, Beer Sheva, Israel
| | - Neta Loewenthal
- Pediatric Endocrinology Unit, Saban Pediatric Medical Center for Israel, Soroka University Medical Center, Beer Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Alon Haim
- Pediatric Endocrinology Unit, Saban Pediatric Medical Center for Israel, Soroka University Medical Center, Beer Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Eli Hershkovitz
- Pediatric Endocrinology Unit, Saban Pediatric Medical Center for Israel, Soroka University Medical Center, Beer Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
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18
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Mohamad J, Samuelov L, Malchin N, Rabinowitz T, Assaf S, Malki L, Malovitski K, Israeli S, Grafi-Cohen M, Bitterman-Deutsch O, Molho-Pessach V, Cohen-Barak E, Bach G, Garty BZ, Bergman R, Harel A, Nanda A, Lestringant GG, McGrath J, Shalev S, Shomron N, Mashiah J, Eskin-Schwartz M, Sprecher E, Sarig O. Molecular epidemiology of non-syndromic autosomal recessive congenital ichthyosis in a Middle-Eastern population. Exp Dermatol 2021; 30:1290-1297. [PMID: 33786896 DOI: 10.1111/exd.14345] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/04/2021] [Accepted: 03/26/2021] [Indexed: 02/02/2023]
Abstract
Autosomal recessive congenital ichthyosis (ARCI) is a rare and heterogeneous skin cornification disorder presenting with generalized scaling and varying degrees of erythema. Clinical manifestations range from lamellar ichthyosis (LI), congenital ichthyosiform erythroderma (CIE) through the most severe form of ARCI, Harlequin ichthyosis (HI). We used homozygosity mapping, whole-exome and direct sequencing to delineate the relative distribution of pathogenic variants as well as identify genotype-phenotype correlations in a cohort of 62 Middle Eastern families with ARCI of various ethnic backgrounds. Pathogenic variants were identified in most ARCI-associated genes including TGM1 (21%), CYP4F22 (18%), ALOX12B (14%), ABCA12 (10%), ALOXE3 (6%), NIPAL4 (5%), PNPLA1 (3%), LIPN (2%) and SDR9C7 (2%). In 19% of cases, no mutation was identified. Our cohort revealed a higher prevalence of CYP4F22 and ABCA12 pathogenic variants and a lower prevalence of TGM1 and NIPAL4 variants, as compared to data obtained in other regions of the world. Most variants (89%) in ALOX12B were associated with CIE and were the most common cause of ARCI among patients of Muslim origin (26%). Palmoplantar keratoderma associated with fissures was exclusively a result of pathogenic variants in TGM1. To our knowledge, this is the largest cohort study of ARCI in the Middle-Eastern population reported to date. Our data demonstrate the importance of population-tailored mutation screening strategies and shed light upon specific genotype-phenotype correlations.
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Affiliation(s)
- Janan Mohamad
- Division of Dermatology and Pediatric Dermatology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Liat Samuelov
- Division of Dermatology and Pediatric Dermatology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Natalia Malchin
- Division of Dermatology and Pediatric Dermatology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Tom Rabinowitz
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Sari Assaf
- Division of Dermatology and Pediatric Dermatology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Liron Malki
- Division of Dermatology and Pediatric Dermatology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Kiril Malovitski
- Division of Dermatology and Pediatric Dermatology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shirli Israeli
- Division of Dermatology and Pediatric Dermatology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Meital Grafi-Cohen
- Division of Dermatology and Pediatric Dermatology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | | | - Vered Molho-Pessach
- Pediatric Dermatology Service, Department of Dermatology, The Faculty of Medicine, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Eran Cohen-Barak
- Department of Dermatology, Haemek Medical Center, Afula, Israel.,Bruce and Ruth Rappaprt Faculty of Medicine, Technion, Haifa, Israel
| | - Gideon Bach
- Department of Human Genetics, Hadassah Hebrew University Hospital, Jerusalem, Israel
| | - Ben Zion Garty
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Schneider Childrens Medical Center, Petah Tikva, Israel
| | - Reuven Bergman
- Department of Dermatology, Rambam Medical Center, Haifa, Israel
| | - Avikam Harel
- Division of Dermatology and Pediatric Dermatology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Arti Nanda
- As'ad Al-Hamad Dermatology Center, Al-Sabah Hospital, Surra, Kuwait
| | | | - John McGrath
- St. John's Institute of Dermatology, King's College London, London, UK
| | - Stavit Shalev
- Bruce and Ruth Rappaprt Faculty of Medicine, Technion, Haifa, Israel.,Institute of Human Genetics, Haemek Medical Center, Afula, Israel
| | - Noam Shomron
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Jacob Mashiah
- Division of Dermatology and Pediatric Dermatology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Marina Eskin-Schwartz
- Genetics Institute at Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Eli Sprecher
- Division of Dermatology and Pediatric Dermatology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ofer Sarig
- Division of Dermatology and Pediatric Dermatology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
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19
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Pavlovsky M, Peled A, Samuelov L, Malki L, Malovitski K, Assaf S, Mohamad J, Meijers O, Eskin-Schwartz M, Sarig O, Sprecher E. Molecular epidemiology of pachyonychia congenita in the Israeli population. Clin Exp Dermatol 2020; 46:663-668. [PMID: 33190296 DOI: 10.1111/ced.14509] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/10/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Pachyonychia congenita (PC) is a rare autosomal dominant disorder featuring palmoplantar keratoderma, nail dystrophy, oral leucokeratosis, pilosebaceous cysts and natal teeth. PC results from dominant mutations in one of five genes (KRT6A, KRT6B, KRT6C, KRT16, KRT17) encoding keratin proteins. AIM To delineate the clinical and genetic features of PC in a series of Israeli patients. METHODS We used direct sequencing of genomic DNA, and also used cDNA sequencing where applicable. RESULTS We collected clinical information and molecular data in a cohort of Israeli families diagnosed with PC (n = 16). Most of the patients were Ashkenazi Jews and had a family history of PC. The most common clinical findings were painful focal plantar keratoderma (94%) accompanied by nail dystrophy (81%), pilosebaceous cysts (31%) and prenatal/natal teeth (13%). In contrast to the high prevalence of KRT6A mutations in other populations, we found that KRT16 mutations were the most common type among Israeli patients with PC (56%). Most (77%) of the Israeli patients with PC with KRT16 mutation carried the same variant (c.380G>A; p.R127H) and shared the same haplotype around the KRT16 locus, suggestive of a founder effect. CONCLUSION The data gleaned from this study emphasizes the importance of population-specific tailored diagnostic strategies.
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Affiliation(s)
- M Pavlovsky
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - A Peled
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - L Samuelov
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - L Malki
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - K Malovitski
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - S Assaf
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - J Mohamad
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - O Meijers
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - M Eskin-Schwartz
- Genetics Institute at Soroka University Medical Center and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - O Sarig
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - E Sprecher
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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20
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David O, Eskin-Schwartz M, Ling G, Dolgin V, Kristal E, Benkowitz E, Osyntsov L, Gradstein L, Birk OS, Loewenthal N, Yerushalmi B. Pituitary stalk interruption syndrome broadens the clinical spectrum of the TTC26 ciliopathy. Clin Genet 2020; 98:303-307. [PMID: 32617964 DOI: 10.1111/cge.13805] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 04/05/2020] [Revised: 06/27/2020] [Accepted: 06/27/2020] [Indexed: 12/11/2022]
Abstract
Ciliopathies are a heterogeneous group of disorders, related to abnormal ciliary function. Severe biliary ciliopathy, caused by bi-allelic mutations in TTC26, has been recently described in the context of a syndrome of polydactyly and severe neonatal cholestasis, with brain, kidney and heart involvement. Pituitary involvement has not been previously reported for patients with this condition. Pituitary stalk interruption syndrome (PSIS) is a congenital anomaly of the pituitary gland, diagnosed by characteristic MRI findings. We now describe four patients with TTC26 ciliopathy due to a homozygous c.695A>G p.Asn232Ser mutation and delineate PSIS as a novel clinical feature of this disorder, highlighting an important role of TTC26 in pituitary development.
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Affiliation(s)
- Odeya David
- Pediatric Endocrinology Unit, Soroka University Medical Center, Beer-Sheva, Israel.,Saban Pediatric Medical Center for Israel, Soroka University Medical Center, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Marina Eskin-Schwartz
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Genetics Institute at Soroka University Medical Center and the Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, at the Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Galina Ling
- Saban Pediatric Medical Center for Israel, Soroka University Medical Center, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Pediatric Gastroenterology Unit, Soroka University Medical Center, Beer-Sheva, Israel
| | - Vadim Dolgin
- Genetics Institute at Soroka University Medical Center and the Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, at the Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Eyal Kristal
- Saban Pediatric Medical Center for Israel, Soroka University Medical Center, Beer-Sheva, Israel
| | - Ela Benkowitz
- Radiology Department, Soroka Medical Center, Beer-Sheva, Israel
| | - Lidia Osyntsov
- Institute of Pathology, Soroka Medical Center, Beer-Sheva, Israel
| | - Libe Gradstein
- Genetics Institute at Soroka University Medical Center and the Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, at the Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Ophthalmology Clinic, Southern District, Clalit Health Services, Beer-sheva, Israel
| | - Ohad S Birk
- Genetics Institute at Soroka University Medical Center and the Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, at the Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Neta Loewenthal
- Pediatric Endocrinology Unit, Soroka University Medical Center, Beer-Sheva, Israel.,Saban Pediatric Medical Center for Israel, Soroka University Medical Center, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Baruch Yerushalmi
- Saban Pediatric Medical Center for Israel, Soroka University Medical Center, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Pediatric Gastroenterology Unit, Soroka University Medical Center, Beer-Sheva, Israel
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21
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Supsrisunjai C, Chao-kai H, Michael M, Duval C, Lee J, Yang H, Huang H, Chaikul T, Onoufriadis A, Steiner R, Ariens R, Sarig O, Sprecher E, Eskin-Schwartz M, Samlaska C, Simpson M, Calonje J, Parsons M, McGrath J. 259 Coagulation factor XIII-A subunit missense mutation in the pathobiology of autosomal dominant multiple dermatofibromas. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.265] [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: 10/24/2022]
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22
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Supsrisunjai C, Hsu CK, Michael M, Duval C, Lee JYW, Yang HS, Huang HY, Chaikul T, Onoufriadis A, Steiner RA, Ariëns RAS, Sarig O, Sprecher E, Eskin-Schwartz M, Samlaska C, Simpson MA, Calonje E, Parsons M, McGrath JA. Coagulation Factor XIII-A Subunit Missense Mutation in the Pathobiology of Autosomal Dominant Multiple Dermatofibromas. J Invest Dermatol 2019; 140:624-635.e7. [PMID: 31493396 DOI: 10.1016/j.jid.2019.08.441] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 07/26/2019] [Accepted: 08/06/2019] [Indexed: 01/16/2023]
Abstract
Dermatofibromas are common benign skin lesions, the etiology of which is poorly understood. We identified two unrelated pedigrees in which there was autosomal dominant transmission of multiple dermatofibromas. Whole exome sequencing revealed a rare shared heterozygous missense variant in the F13A1 gene encoding factor XIII subunit A (FXIII-A), a transglutaminase involved in hemostasis, wound healing, tumor growth, and apoptosis. The variant (p.Lys679Met) has an allele frequency of 0.0002 and is predicted to be a damaging mutation. Recombinant human Lys679Met FXIII-A demonstrated reduced fibrin crosslinking activity in vitro. Of note, the treatment of fibroblasts with media containing Lys679Met FXIII-A led to enhanced adhesion, proliferation, and type I collagen synthesis. Immunostaining revealed co-localization between FXIII-A and α4β1 integrins, more prominently for Lys679Met FXIII-A than the wild type. In addition, both the α4β1 inhibitors and the mutation of the FXIII-A Isoleucine-Leucine-Aspartate-Threonine (ILDT) motif prevented Lys679Met FXIII-A-dependent proliferation and collagen synthesis of fibroblasts. Our data suggest that the Lys679Met mutation may lead to a conformational change in the FXIII-A protein that enhances α4-integrin binding and provides insight into an unexpected role for FXIII-A in the pathobiology of familial dermatofibroma.
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Affiliation(s)
- Chavalit Supsrisunjai
- St John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, United Kingdom; Institute of Dermatology, Ministry of Public Health, Bangkok, Thailand
| | - Chao-Kai Hsu
- St John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, United Kingdom; Department of Dermatology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan; International Center for Wound Repair and Regeneration, National Cheng Kung University, Tainan, Taiwan
| | - Magdalene Michael
- Randall Centre for Cell and Molecular Biophysics, School of Basic and Medical Biosciences, King's College London, United Kingdom
| | - Cédric Duval
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - John Y W Lee
- St John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, United Kingdom
| | - Hsing-San Yang
- Department of Dermatology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Hsin-Yu Huang
- School of Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Thitiwat Chaikul
- St John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, United Kingdom
| | - Alexandros Onoufriadis
- St John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, United Kingdom
| | - Roberto A Steiner
- Randall Centre for Cell and Molecular Biophysics, School of Basic and Medical Biosciences, King's College London, United Kingdom
| | - Robert A S Ariëns
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Ofer Sarig
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Eli Sprecher
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Department of Human Molecular Genetics & Biochemistry, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | | | - Curt Samlaska
- Academic Dermatology of Nevada, University of Nevada School of Medicine, Reno, Nevada
| | - Michael A Simpson
- Department of Genetics, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, United Kingdom
| | - Eduardo Calonje
- St John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, United Kingdom; Department of Dermatopathology, St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
| | - Maddy Parsons
- Randall Centre for Cell and Molecular Biophysics, School of Basic and Medical Biosciences, King's College London, United Kingdom
| | - John A McGrath
- St John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, United Kingdom.
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23
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Mohamad J, Sarig O, Godsel LM, Peled A, Malchin N, Bochner R, Vodo D, Rabinowitz T, Pavlovsky M, Taiber S, Fried M, Eskin-Schwartz M, Assi S, Shomron N, Uitto J, Koetsier JL, Bergman R, Green KJ, Sprecher E. Filaggrin 2 Deficiency Results in Abnormal Cell-Cell Adhesion in the Cornified Cell Layers and Causes Peeling Skin Syndrome Type A. J Invest Dermatol 2018; 138:1736-1743. [PMID: 29758285 DOI: 10.1016/j.jid.2018.04.032] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 04/23/2018] [Accepted: 04/24/2018] [Indexed: 12/31/2022]
Abstract
Peeling skin syndromes form a large and heterogeneous group of inherited disorders characterized by superficial detachment of the epidermal cornified cell layers, often associated with inflammatory features. Here we report on a consanguineous family featuring noninflammatory peeling of the skin exacerbated by exposure to heat and mechanical stress. Whole exome sequencing revealed a homozygous nonsense mutation in FLG2, encoding filaggrin 2, which cosegregated with the disease phenotype in the family. The mutation was found to result in decreased FLG2 RNA levels as well as almost total absence of filaggrin 2 in the patient epidermis. Filaggrin 2 was found to be expressed throughout the cornified cell layers and to colocalize with corneodesmosin that plays a crucial role in maintaining cell-cell adhesion in this region of the epidermis. The absence of filaggrin 2 in the patient skin was associated with markedly decreased corneodesmosin expression, which may contribute to the peeling phenotype displayed by the patients. Accordingly, using the dispase dissociation assay, we showed that FLG2 downregulation interferes with keratinocyte cell-cell adhesion. Of particular interest, this effect was aggravated by temperature elevation, consistent with the clinical phenotype. Restoration of corneodesmosin levels by ectopic expression rescued cell-cell adhesion. Taken together, the present data suggest that filaggrin 2 is essential for normal cell-cell adhesion in the cornified cell layers.
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Affiliation(s)
- Janan Mohamad
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Department of Human Molecular Genetics & Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ofer Sarig
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Lisa M Godsel
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Alon Peled
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Department of Human Molecular Genetics & Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Natalia Malchin
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Ron Bochner
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Dan Vodo
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Department of Human Molecular Genetics & Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Tom Rabinowitz
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Mor Pavlovsky
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Shahar Taiber
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Department of Human Molecular Genetics & Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Maya Fried
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Department of Human Molecular Genetics & Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Marina Eskin-Schwartz
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Department of Human Molecular Genetics & Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Siwar Assi
- Research Center for Digestive Disease, Sourasky Medical Center and Sackler Faculty of Medicine, Tel-Aviv, Israel
| | - Noam Shomron
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Variantyx, Ltd, Framingham, Massachusetts, USA
| | - Jouni Uitto
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Jennifer L Koetsier
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Reuven Bergman
- Department of Dermatology, Rambam Health Care Campus, Haifa, Israel; Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Kathleen J Green
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA; Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Eli Sprecher
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Department of Human Molecular Genetics & Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
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24
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Mohamad J, Samuelov L, Malchin N, Tiaber S, Rabinowitz T, Bitterman-Deutsch O, Molho-Pessach V, Cohen-Barak E, Bach G, Garty B, Bergman R, Harel A, Nanda A, Lestringant G, McGrath J, Shalev S, Shomron N, Mashiach J, Eskin-Schwartz M, Sarig O, Sprecher E. 283 Molecular epidemiology of non-syndromic autosomal recessive congenital ichthyosis in a middle eastern population. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.289] [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: 10/17/2022]
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25
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Bochner R, Eskin-Schwartz M, Sarig O, Peled A, Mohamad J, Malchin N, Isakov O, Fainberg G, Shomron N, Bertolini M, Paus R, Sprecher E. 770 An exceptional mutation in ALX4 results in ectodermal defects. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.780] [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: 11/29/2022]
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26
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Pavlovsky M, Sarig O, Eskin-Schwartz M, Malchin N, Bochner R, Mohamad J, Gat A, Peled A, Hafner A, Sprecher E. 由PSENEN始祖突变引起的结合了化脓性汗腺炎与道林-德戈斯(Dowling-Degos)病的表现型. Br J Dermatol 2018. [DOI: 10.1111/bjd.16303] [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: 11/29/2022]
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27
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Pavlovsky M, Sarig O, Eskin-Schwartz M, Malchin N, Bochner R, Mohamad J, Gat A, Peled A, Hafner A, Sprecher E. A phenotype combining hidradenitis suppurativa with Dowling-Degos disease caused by a founder mutation in PSENEN. Br J Dermatol 2018. [DOI: 10.1111/bjd.16285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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28
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Pavlovsky M, Sarig O, Eskin-Schwartz M, Malchin N, Bochner R, Mohamad J, Gat A, Peled A, Hafner A, Sprecher E. A phenotype combining hidradenitis suppurativa with Dowling-Degos disease caused by a founder mutation in PSENEN. Br J Dermatol 2017; 178:502-508. [DOI: 10.1111/bjd.16000] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2017] [Indexed: 11/28/2022]
Affiliation(s)
- M. Pavlovsky
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
| | - O. Sarig
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
| | - M. Eskin-Schwartz
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
- Department of Human Molecular Genetics and Biochemistry; Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - N. Malchin
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
| | - R. Bochner
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
| | - J. Mohamad
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
| | - A. Gat
- Institute of Pathology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
| | - A. Peled
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
| | - A. Hafner
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
| | - E. Sprecher
- Department of Dermatology; Tel Aviv Sourasky Medical Center; 6 Weizmann Street Tel Aviv 64239 Israel
- Department of Human Molecular Genetics and Biochemistry; Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
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Eskin-Schwartz M, Basel-Vanagaite L, David M, Lagovsky I, Ben-Amitai D, Smirin-Yosef P, Atzmony L, Hodak E. Intra-familial Variation in Clinical Phenotype of CARD14-related Psoriasis. Acta Derm Venereol 2016; 96:885-887. [PMID: 26984337 DOI: 10.2340/00015555-2405] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Psoriasis is a multifactorial chronic inflammatory disease. Monogenic psoriasis has been described recently, including dominantly inherited plaque and generalized pustular types, related to activating mutations in the CARD14 gene. We describe here a family with CARD14-related psoriasis, exhibiting an extreme variability of clinical presentation (from mild plaque-type to generalized pustular psoriasis) and early disease onset. The affected family members harboured the c.349G>A [p.Gly117Ser] mutation in CARD14, which has not previously been linked to pustular psoriatic phenotype. Furthermore, most severely affected individuals carried 3 additional CARD14 coding region polymorphisms (rs2066964, rs34367357 and rs11652075), suggesting their possible effect on disease expression. Early-onset psoriasis co-segregated with the HLA-C*0602, indicating that HLA-C*0602 could potentially modulate the time of disease onset. In summary, this paper describes a family with CARD14-related psoriasis and discusses the possible influence of the specific haplotypes on intra-familial variation in the clinical phenotype of the disease.
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Affiliation(s)
- Marina Eskin-Schwartz
- Department of Dermatology, Tel-Aviv Sourasky Medical Center, Weizman str. 6, Tel-Aviv, Israel.
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30
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Peled A, Sarig O, Samuelov L, Bertolini M, Ziv L, Weissglas-Volkov D, Eskin-Schwartz M, Adase CA, Malchin N, Bochner R, Fainberg G, Goldberg I, Sugawara K, Baniel A, Tsuruta D, Luxenburg C, Adir N, Duverger O, Morasso M, Shalev S, Gallo RL, Shomron N, Paus R, Sprecher E. Mutations in TSPEAR, Encoding a Regulator of Notch Signaling, Affect Tooth and Hair Follicle Morphogenesis. PLoS Genet 2016; 12:e1006369. [PMID: 27736875 PMCID: PMC5065119 DOI: 10.1371/journal.pgen.1006369] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 09/16/2016] [Indexed: 11/19/2022] Open
Abstract
Despite recent advances in our understanding of the pathogenesis of ectodermal dysplasias (EDs), the molecular basis of many of these disorders remains unknown. In the present study, we aimed at elucidating the genetic basis of a new form of ED featuring facial dysmorphism, scalp hypotrichosis and hypodontia. Using whole exome sequencing, we identified 2 frameshift and 2 missense mutations in TSPEAR segregating with the disease phenotype in 3 families. TSPEAR encodes the thrombospondin-type laminin G domain and EAR repeats (TSPEAR) protein, whose function is poorly understood. TSPEAR knock-down resulted in altered expression of genes known to be regulated by NOTCH and to be involved in murine hair and tooth development. Pathway analysis confirmed that down-regulation of TSPEAR in keratinocytes is likely to affect Notch signaling. Accordingly, using a luciferase-based reporter assay, we showed that TSPEAR knock-down is associated with decreased Notch signaling. In addition, NOTCH1 protein expression was reduced in patient scalp skin. Moreover, TSPEAR silencing in mouse hair follicle organ cultures was found to induce apoptosis in follicular epithelial cells, resulting in decreased hair bulb diameter. Collectively, these observations indicate that TSPEAR plays a critical, previously unrecognized role in human tooth and hair follicle morphogenesis through regulation of the Notch signaling pathway. Ectodermal dysplasias refer to a large group of inherited disorders characterized by developmental defects in tissues of ectodermal origin. The study of these conditions has been instrumental in the discovery of biological pathways involved in the regulation of epithelial tissue morphogenesis. In this report, through the delineation of the molecular basis of a novel form of autosomal recessive ectodermal dysplasia, we identified a new key player in ectodermal development. We detected a number of mutations in TSPEAR co-segregating with abnormal hair and tooth development in three families. TSPEAR encodes the thrombospondin-type laminin G domain and EAR repeats (TSPEAR) protein, whose function is poorly understood. TSPEAR was found to be strongly expressed in murine hair and tooth. Using a reporter assay, we showed that it regulates Notch activity. Accordingly, NOTCH1 expression was altered in patient skin, and NOTCH1, as well as many of its known targets, was down-regulated in TSPEAR deficient keratinocytes. Moreover, Tspear silencing in mouse hair follicle organ cultures was found to induce apoptosis in follicular epithelial cells, resulting in decreased hair bulb diameter. Collectively, these observations indicate that TSPEAR plays a critical, previously unrecognized role in human tooth and hair follicle morphogenesis through regulation of the Notch pathway. As such, these new data are likely to lead to further investigations aimed at characterizing the role of Notch signaling pathway in other forms of ectodermal dysplasias as well as acquired hair and tooth pathologies.
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Affiliation(s)
- Alon Peled
- Department of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel
- Department of Human Molecular Genetics and Biochemistry, Tel-Aviv University, Tel Aviv, Israel
| | - Ofer Sarig
- Department of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel
| | - Liat Samuelov
- Department of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel
- Division of Dermatology, University of California, San Diego, San Diego, California, United States of America
| | - Marta Bertolini
- Department of Dermatology, University of Münster, Münster, Germany
| | - Limor Ziv
- Sheba Medical Center, Ramat Gan, Israel
| | | | - Marina Eskin-Schwartz
- Department of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel
- Department of Human Molecular Genetics and Biochemistry, Tel-Aviv University, Tel Aviv, Israel
| | - Christopher A. Adase
- Division of Dermatology, University of California, San Diego, San Diego, California, United States of America
| | - Natalia Malchin
- Department of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel
| | - Ron Bochner
- Department of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel
| | - Gilad Fainberg
- Department of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel
| | - Ilan Goldberg
- Department of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel
| | - Koji Sugawara
- Department of Dermatology, Osaka City University, Osaka, Japan
| | - Avital Baniel
- Department of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel
| | - Daisuke Tsuruta
- Department of Dermatology, Osaka City University, Osaka, Japan
| | - Chen Luxenburg
- Department of Cell and Developmental Biology, Tel Aviv University, Tel Aviv, Israel
| | - Noam Adir
- Faculty of Chemistry, Technion, Haifa, Israel
| | - Olivier Duverger
- Laboratory of Skin Biology, National Institute of Health, Bethesda, Maryland, United States of America
| | - Maria Morasso
- Laboratory of Skin Biology, National Institute of Health, Bethesda, Maryland, United States of America
| | - Stavit Shalev
- Institute of Human Genetics, Haemek Medical Center, Afula, Israel
- Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Richard L. Gallo
- Division of Dermatology, University of California, San Diego, San Diego, California, United States of America
| | - Noam Shomron
- Department of Cell and Developmental Biology, Tel Aviv University, Tel Aviv, Israel
| | - Ralf Paus
- Department of Dermatology, University of Münster, Münster, Germany
- Centre for Dermatology Research, Institute of Inflammation and Repair, University of Manchester, Manchester, United Kingdom
| | - Eli Sprecher
- Department of Dermatology, Tel Aviv Medical Center, Tel Aviv, Israel
- Department of Human Molecular Genetics and Biochemistry, Tel-Aviv University, Tel Aviv, Israel
- * E-mail:
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Peled A, Sarig O, Samuelov L, Bertolini M, Ziv L, Weissglas-Volkov D, Eskin-Schwartz M, Adase C, Malchin N, Bochner R, Fainberg G, Sugawara K, Baniel A, Tsuruta D, Luxemburg C, Adir N, Goldberg I, Gallo R, Shomron N, Paus R, Sprecher E. 414 A new form of ectodermal dysplasia caused by mutations in TSPEAR. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.02.448] [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: 10/21/2022]
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Eskin-Schwartz M, Metzger Y, Peled A, Weissglas-Volkov D, Malchin N, Gat A, Vodo D, Mevorah B, Shomron N, Sprecher E, Sarig O. 378 Somatic mosaicism for the “lethal” GJB2 mutation results in a patterned form of spiny hyperkeratosis without eccrine involvement. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.02.411] [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: 10/21/2022]
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Eskin-Schwartz M, Drozhdina M, Sarig O, Jackman T, Isakov O, Samuelov L, Malchin N, Peled A, Vodo D, Shomron N, Ruzicka T, Koshkin S, Green K, Paller A, Sprecher E. 381 Epidermolytic ichthyosis sine epidermolysis. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.02.414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Eskin-Schwartz M, Metzger Y, Peled A, Weissglas-Volkov D, Malchin N, Gat A, Vodo D, Mevorah B, Shomron N, Sprecher E, Sarig O. Somatic Mosaicism for a "Lethal" GJB2 Mutation Results in a Patterned Form of Spiny Hyperkeratosis without Eccrine Involvement. Pediatr Dermatol 2016; 33:322-6. [PMID: 27087580 DOI: 10.1111/pde.12848] [Citation(s) in RCA: 4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Spiny hyperkeratosis refers to a rare clinical phenotype characterized by nonfollicular keratotic projections and sometimes associated with other acquired and inherited conditions. We describe a case of congenital patterned spiny hyperkeratosis. METHODS To identify the cause of this disorder, we used a combination of whole exome sequencing, direct sequencing and TaqMan assay. RESULTS We found that the peculiar clinical features displayed by the patient are due to somatic mosaicism for a heterozygous mutation in the GJB2 gene. CONCLUSION Because histopathologic examination of two independent biopsies did not reveal porokeratotic eccrine ostial and dermal duct nevus (PEODDN), previously reported to result from somatic mutations in GJB2, it appears that mutations in this gene can cause nevoid spiny hyperkeratosis in the context of PEODDN or as an isolated finding.
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Affiliation(s)
- Marina Eskin-Schwartz
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yoav Metzger
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Alon Peled
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Daphna Weissglas-Volkov
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Natalia Malchin
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Andrea Gat
- Department of Pathology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Dan Vodo
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Baruch Mevorah
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Noam Shomron
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Eli Sprecher
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ofer Sarig
- Department of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
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Segal R, Eskin-Schwartz M, Trattner A, Feinmesser M, Hodak E, Ingber A, David M. Recurrent flexural pellagroid dermatitis: an unusual variant of irritant contact dermatitis. Acta Derm Venereol 2015; 95:116-7. [PMID: 24696128 DOI: 10.2340/00015555-1862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Rina Segal
- Department of Dermatology, Rabin Medical Center, Beilinson Hospital, 49100 Petah Tiqwa, Israel
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Rahamimoff H, Elbaz B, Valitsky M, Khatib M, Eskin-Schwartz M, Elmaz D. Immunosuppressive Drugs, Immunophilins, and Functional Expression of NCX Isoforms. Advances in Experimental Medicine and Biology 2013; 961:275-87. [DOI: 10.1007/978-1-4614-4756-6_23] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Eskin-Schwartz M, David M, Mimouni D. Mycophenolate Mofetil for the Management of Autoimmune Bullous Diseases. Immunol Allergy Clin North Am 2012; 32:309-15, vii. [DOI: 10.1016/j.iac.2012.04.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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