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Patergnani S, Bataillard MS, Danese A, Alves S, Cazevieille C, Valéro R, Tranebjærg L, Maurice T, Pinton P, Delprat B, Richard EM. The Wolfram-like variant WFS1 E864K destabilizes MAM and compromises autophagy and mitophagy in human and mice. Autophagy 2024; 20:2055-2066. [PMID: 38651637 PMCID: PMC11346566 DOI: 10.1080/15548627.2024.2341588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 04/03/2024] [Accepted: 04/08/2024] [Indexed: 04/25/2024] Open
Abstract
Dominant variants in WFS1 (wolframin ER transmembrane glycoprotein), the gene coding for a mitochondria-associated endoplasmic reticulum (ER) membrane (MAM) resident protein, have been associated with Wolfram-like syndrome (WLS). In vitro and in vivo, WFS1 loss results in reduced ER to mitochondria calcium (Ca2+) transfer, mitochondrial dysfunction, and enhanced macroautophagy/autophagy and mitophagy. However, in the WLS pathological context, whether the mutant protein triggers the same cellular processes is unknown. Here, we show that in human fibroblasts and murine neuronal cultures the WLS protein WFS1E864K leads to decreases in mitochondria bioenergetics and Ca2+ uptake, deregulation of the mitochondrial quality system mechanisms, and alteration of the autophagic flux. Moreover, in the Wfs1E864K mouse, these alterations are concomitant with a decrease of MAM number. These findings reveal pathophysiological similarities between WS and WLS, highlighting the importance of WFS1 for MAM's integrity and functionality. It may open new treatment perspectives for patients with WLS.Abbreviations: BafA1: bafilomycin A1; ER: endoplasmic reticulum; HSPA9/GRP75: heat shock protein family A (Hsp70) member 9; ITPR/IP3R: inositol 1,4,5-trisphosphate receptor; MAM: mitochondria-associated endoplasmic reticulum membrane; MCU: mitochondrial calcium uniporter; MFN2: mitofusin 2; OCR: oxygen consumption rate; ROS: reactive oxygen species; ROT/AA: rotenone+antimycin A; VDAC1: voltage dependent anion channel 1; WLS: Wolfram-like syndrome; WS: Wolfram syndrome; WT: wild-type.
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Affiliation(s)
- Simone Patergnani
- Department of Medical Sciences, Section of Experimental Medicine, Technopole of Ferrara, Laboratory for Advanced Therapies (LTTA), Ferrara, Italy
| | | | - Alberto Danese
- Department of Medical Sciences, Section of Experimental Medicine, Technopole of Ferrara, Laboratory for Advanced Therapies (LTTA), Ferrara, Italy
| | - Stacy Alves
- MMDN, University Montpellier, EPHE, INSERM, Montpellier, France
| | | | - René Valéro
- Department of Nutrition, Metabolic Diseases and Endocrinology, Aix Marseille Univ, APHM, INSERM, INRAE, C2VN, University Hospital La Conception, Marseille, France
| | - Lisbeth Tranebjærg
- The Kennedy Center, Department of Clinical Genetics, Copenhagen University Hospital, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Tangui Maurice
- MMDN, University Montpellier, EPHE, INSERM, Montpellier, France
| | - Paolo Pinton
- Department of Medical Sciences, Section of Experimental Medicine, Technopole of Ferrara, Laboratory for Advanced Therapies (LTTA), Ferrara, Italy
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2
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Li S, Li X, Qu J. A Wolfram-like syndrome family: Case report. Eur J Ophthalmol 2024; 34:NP51-NP57. [PMID: 38470317 DOI: 10.1177/11206721241237552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
BACKGROUND Wolfram-like syndrome (WFLS) is an autosomal dominant inherited disease characterized by a single heterozygous pathogenic variant in the WFS1 gene. Its clinical presentation is similar to autosomal recessive Wolfram syndrome. CASE PRESENTATION We reported a case of a 10-year-old boy and his family members who initially experienced hearing impairment (HI), followed by optic atrophy. Genetic testing revealed the presence of a WFS1 variant (chr4-6302385 exon8 NM_006005.3: c.2590G > A, p. Glu864Lys). CONCLUSION Wolfram-like syndrome, a rare neurodegenerative genetic disorder, manifested as deafness, optic atrophy, and diabetes mellitus. There hasn't been a definite treatment yet. Early identification of the variant in the WFS1 gene is beneficial for genetic counseling.
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Affiliation(s)
- Siying Li
- Department of Ophthalmology, Peking University People's Hospital, Beijing, China
- Eye Diseases and Optometry Institute, Beijing, China
- Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing, China
| | - Xiaoxin Li
- Department of Ophthalmology, Peking University People's Hospital, Beijing, China
- Eye Diseases and Optometry Institute, Beijing, China
- Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing, China
| | - Jinfeng Qu
- Department of Ophthalmology, Peking University People's Hospital, Beijing, China
- Eye Diseases and Optometry Institute, Beijing, China
- Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing, China
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Borrelli E, Bandello F, Boon CJF, Carelli V, Lenaers G, Reibaldi M, Sadda SR, Sadun AA, Sarraf D, Yu-Wai-Man P, Barboni P. Mitochondrial retinopathies and optic neuropathies: The impact of retinal imaging on modern understanding of pathogenesis, diagnosis, and management. Prog Retin Eye Res 2024; 101:101264. [PMID: 38703886 DOI: 10.1016/j.preteyeres.2024.101264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 03/18/2024] [Accepted: 04/26/2024] [Indexed: 05/06/2024]
Abstract
Advancements in ocular imaging have significantly broadened our comprehension of mitochondrial retinopathies and optic neuropathies by examining the structural and pathological aspects of the retina and optic nerve in these conditions. This article aims to review the prominent imaging characteristics associated with mitochondrial retinopathies and optic neuropathies, aiming to deepen our insight into their pathogenesis and clinical features. Preceding this exploration, the article provides a detailed overview of the crucial genetic and clinical features, which is essential for the proper interpretation of in vivo imaging. More importantly, we will provide a critical analysis on how these imaging modalities could serve as biomarkers for characterization and monitoring, as well as in guiding treatment decisions. However, these imaging methods have limitations, which will be discussed along with potential strategies to mitigate them. Lastly, the article will emphasize the potential advantages and future integration of imaging techniques in evaluating patients with mitochondrial eye disorders, considering the prospects of emerging gene therapies.
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Affiliation(s)
- Enrico Borrelli
- Department of Surgical Sciences, University of Turin, Turin, Italy; Department of Ophthalmology, "City of Health and Science" Hospital, Turin, Italy.
| | - Francesco Bandello
- Vita-Salute San Raffaele University, Milan, Italy; IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Camiel J F Boon
- Department of Ophthalmology, Amsterdam University Medical Centers, Amsterdam, the Netherlands; Department of Ophthalmology, Leiden University Medical Center, Leiden, the Netherlands
| | - Valerio Carelli
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Bologna, Italy; IRCCS Istituto delle Scienze Neurologiche di Bologna, Programma di Neurogenetica, Bologna, Italy
| | - Guy Lenaers
- Equipe MitoLab, Unité MitoVasc, INSERM U1083, Université d'Angers, 49933, Angers, France; Service de Neurologie, CHU d'Angers, 49100, Angers, France
| | - Michele Reibaldi
- Department of Surgical Sciences, University of Turin, Turin, Italy; Department of Ophthalmology, "City of Health and Science" Hospital, Turin, Italy
| | - Srinivas R Sadda
- Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA; Doheny Eye Institute, Los Angeles, CA, USA
| | - Alfredo A Sadun
- Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA; Doheny Eye Institute, Los Angeles, CA, USA
| | - David Sarraf
- Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA; Retinal Disorders and Ophthalmic Genetics Division, Stein Eye Institute, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Patrick Yu-Wai-Man
- John van Geest Centre for Brain Repair and MRC Mitochondrial Biology Unit, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK; Cambridge Eye Unit, Addenbrooke's Hospital, Cambridge University Hospitals, Cambridge, UK; Moorfields Eye Hospital NHS Foundation Trust, London, UK; Institute of Ophthalmology, University College London, London, UK
| | - Piero Barboni
- IRCCS San Raffaele Scientific Institute, Milan, Italy; Studio Oculistico d'Azeglio, Bologna, Italy.
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Dange NS, Shah N, Oza C, Sharma J, Singhal J, Yewale S, Mondkar S, Ambike S, Khadilkar V, Khadilkar AV. Long term clinical follow up of four patients with Wolfram syndrome and urodynamic abnormalities. J Pediatr Endocrinol Metab 2024; 37:434-440. [PMID: 38465704 DOI: 10.1515/jpem-2023-0531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/23/2024] [Indexed: 03/12/2024]
Abstract
OBJECTIVES Wolfram syndrome is characterised by insulin-dependent diabetes (IDDM), diabetes insipidus (DI), optic atrophy, sensorineural deafness and neurocognitive disorders. The DIDMOAD acronym has been recently modified to DIDMOAUD suggesting the rising awareness of the prevalence of urinary tract dysfunction (UD). End stage renal disease is the commonest cause of mortality in Wolfram syndrome. We present a case series with main objective of long term follow up in four children having Wolfram syndrome with evaluation of their urodynamic profile. METHODS A prospective follow up of four genetically proven children with Wolfram syndrome presenting to a tertiary care pediatric diabetes clinic in Pune, India was conducted. Their clinical, and urodynamic parameters were reviewed. RESULTS IDDM, in the first decade, was the initial presentation in all the four children (three male and one female). Three children had persistent polyuria and polydipsia despite having optimum glycemic control; hence were diagnosed to have DI and treated with desmopressin. All four patients entered spontaneous puberty. All patients had homozygous mutation in WFS1 gene; three with exon 8 and one with exon 6 novel mutations. These children with symptoms of lower urinary tract malfunction were further evaluated with urodynamic studies; two of them had hypocontractile detrusor and another had sphincter-detrusor dyssynergia. Patients with hypocontractile bladder were taught clean intermittent catheterization and the use of overnight drain. CONCLUSIONS We report a novel homozygous deletion in exon 6 of WFS-1 gene. The importance of evaluation of lower urinary tract malfunction is highlighted by our case series. The final bladder outcome in our cases was a poorly contractile bladder in three patients.
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Affiliation(s)
- Nimisha S Dange
- Department of Growth and Pediatric Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, Pune, Maharashtra, India
| | - Nikhil Shah
- Department of Growth and Pediatric Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, Pune, Maharashtra, India
- Division of Pediatric Endocrinology, Department of Pediatrics, Surya Children's Hospital, Chembur, Mumbai, Maharashtra, India
| | - Chirantap Oza
- Department of Growth and Pediatric Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, Pune, Maharashtra, India
| | - Jyoti Sharma
- Pediatric Nephrology Service, Renal Unit, KEM Hospital, Pune, Maharashtra, India
| | - Jyoti Singhal
- Pediatric Nephrology Service, Renal Unit, KEM Hospital, Pune, Maharashtra, India
| | - Sushil Yewale
- Department of Growth and Pediatric Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, Pune, Maharashtra, India
| | - Shruti Mondkar
- Department of Growth and Pediatric Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, Pune, Maharashtra, India
| | | | - Vaman Khadilkar
- Department of Growth and Pediatric Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, Pune, Maharashtra, India
- Interdisciplinary School of Health Sciences, Savitribai Phule University, Pune, Maharashtra, India
| | - Anuradha V Khadilkar
- Department of Growth and Pediatric Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, Pune, Maharashtra, India
- Interdisciplinary School of Health Sciences, Savitribai Phule University, Pune, Maharashtra, India
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Richard EM, Brun E, Korchagina J, Crouzier L, Affortit C, Alves S, Cazevieille C, Mausset-Bonnefont AL, Lenoir M, Puel JL, Maurice T, Thiry M, Wang J, Delprat B. Wfs1 E864K knock-in mice illuminate the fundamental role of Wfs1 in endocochlear potential production. Cell Death Dis 2023; 14:387. [PMID: 37386014 PMCID: PMC10310813 DOI: 10.1038/s41419-023-05912-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 06/08/2023] [Accepted: 06/20/2023] [Indexed: 07/01/2023]
Abstract
Wolfram syndrome (WS) is a rare neurodegenerative disorder encompassing diabetes mellitus, diabetes insipidus, optic atrophy, hearing loss (HL) as well as neurological disorders. None of the animal models of the pathology are presenting with an early onset HL, impeding the understanding of the role of Wolframin (WFS1), the protein responsible for WS, in the auditory pathway. We generated a knock-in mouse, the Wfs1E864K line, presenting a human mutation leading to severe deafness in affected individuals. The homozygous mice showed a profound post-natal HL and vestibular syndrome, a collapse of the endocochlear potential (EP) and a devastating alteration of the stria vascularis and neurosensory epithelium. The mutant protein prevented the localization to the cell surface of the Na+/K+ATPase β1 subunit, a key protein for the maintenance of the EP. Overall, our data support a key role of WFS1 in the maintenance of the EP and the stria vascularis, via its binding partner, the Na+/K+ATPase β1 subunit.
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Affiliation(s)
| | - Emilie Brun
- INM, Univ Montpellier, INSERM, Montpellier, France
| | | | - Lucie Crouzier
- MMDN, Univ Montpellier, EPHE, INSERM, Montpellier, France
| | | | - Stacy Alves
- MMDN, Univ Montpellier, EPHE, INSERM, Montpellier, France
| | | | | | - Marc Lenoir
- INM, Univ Montpellier, INSERM, Montpellier, France
| | | | - Tangui Maurice
- MMDN, Univ Montpellier, EPHE, INSERM, Montpellier, France
| | - Marc Thiry
- Laboratoire de Biologie Cellulaire, Université de Liège, Liège, Belgique
| | - Jing Wang
- INM, Univ Montpellier, INSERM, Montpellier, France
| | - Benjamin Delprat
- MMDN, Univ Montpellier, EPHE, INSERM, Montpellier, France.
- INM, Univ Montpellier, INSERM, Montpellier, France.
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6
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Gan NS, Oziębło D, Skarżyński H, Ołdak M. Monogenic Causes of Low-Frequency Non-Syndromic Hearing Loss. Audiol Neurootol 2023; 28:327-337. [PMID: 37121227 DOI: 10.1159/000529464] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 01/23/2023] [Indexed: 05/02/2023] Open
Abstract
BACKGROUND Low-frequency non-syndromic hearing loss (LFNSHL) is a rare form of hearing loss (HL). It is defined as HL at low frequencies (≤2,000 Hz) resulting in a characteristic ascending audiogram. LFNSHL is usually diagnosed postlingually and is progressive, leading to HL affecting other frequencies as well. Sometimes it occurs with tinnitus. Around half of the diagnosed prelingual HL cases have a genetic cause and it is usually inherited in an autosomal recessive mode. Postlingual HL caused by genetic changes generally has an autosomal dominant pattern of inheritance and its incidence remains unknown. SUMMARY To date, only a handful of genes have been found as causing LFNSHL: well-established WFS1 and, reported in some cases, DIAPH1, MYO7A, TNC, and CCDC50 (respectively, responsible for DFNA6/14/38, DFNA1, DFNA11, DFNA56, and DFNA44). In this review, we set out audiological phenotypes, causative genetic changes, and molecular mechanisms leading to the development of LFNSHL. KEY MESSAGES LFNSHL is most commonly caused by pathogenic variants in the WFS1 gene, but it is also important to consider changes in other HL genes, which may result in similar audiological phenotype.
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Affiliation(s)
- Nina Sara Gan
- Department of Genetics, Institute of Physiology and Pathology of Hearing, Warsaw, Poland
| | - Dominika Oziębło
- Department of Genetics, Institute of Physiology and Pathology of Hearing, Warsaw, Poland
| | - Henryk Skarżyński
- Oto-Rhino-Laryngology Surgery Clinic, Institute of Physiology and Pathology of Hearing, Warsaw, Poland
| | - Monika Ołdak
- Department of Genetics, Institute of Physiology and Pathology of Hearing, Warsaw, Poland
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7
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de Muijnck C, Brink JBT, Bergen AA, Boon CJF, van Genderen MM. Delineating Wolfram-like syndrome: A systematic review and discussion of the WFS1-associated disease spectrum. Surv Ophthalmol 2023:S0039-6257(23)00035-8. [PMID: 36764396 DOI: 10.1016/j.survophthal.2023.01.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 01/23/2023] [Accepted: 01/30/2023] [Indexed: 02/11/2023]
Abstract
Wolfram-like syndrome (WFLS) is a recently described autosomal dominant disorder with phenotypic similarities to autosomal recessive Wolfram syndrome (WS), including optic atrophy, hearing impairment, and diabetes mellitus. We summarize current literature, define the clinical characteristics, and investigate potential genotype phenotype correlations. A systematic literature search was conducted in electronic databases Pubmed/MEDLINE, EMBACE, and Cochrane Library. We included studies reporting patients with a clinical picture consisting at least 2 typical clinical manifestations of WSF1 disorders and heterozygous mutations in WFS1. In total, 86 patients from 35 studies were included. The most common phenotype consisted of the combination of optic atrophy (87%) and hearing impairment (94%). Diabetes mellitus was seen in 44% of the patients. Nineteen percent developed cataract. Patients with missense mutations in WFS1 had a lower number of clinical manifestations, less chance of developing diabetes insipidus, but a younger age at onset of hearing impairment compared to patients with nonsense mutations or deletions causing frameshift. There were no studies reporting decreased life expectancy. This review shows that, within the spectrum of WFS1-associated disorders or "wolframinopathies," autosomal dominantly inherited WFLS has a relatively mild phenotype compared to autosomal recessive WS. The clinical manifestations and their age at onset are associated with the specific underlying mutations in the WFS1 gene.
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Affiliation(s)
- Cansu de Muijnck
- Department of Ophthalmology, University Medical Center Utrecht, Utrecht, the Netherlands; Department of Ophthalmology, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | - Jacoline B Ten Brink
- Department of Human Genetics, Section Ophthalmogenetics, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | - Arthur A Bergen
- Department of Human Genetics, Section Ophthalmogenetics, Amsterdam University Medical Centers, Amsterdam, the Netherlands; Queen Emma Center of Precision Medicine, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | - Camiel J F Boon
- Department of Ophthalmology, Amsterdam University Medical Centers, Amsterdam, the Netherlands; Department of Ophthalmology, Leiden University Medical Center, Leiden, the Netherlands
| | - Maria M van Genderen
- Department of Ophthalmology, University Medical Center Utrecht, Utrecht, the Netherlands; Diagnostic Center for Complex Visual Disorders, Zeist, the Netherlands.
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8
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Ding Y, Li Z, Zhang Q, Li N, Chang G, Wang Y, Li X, Li J, Li Q, Yao RE, Li X, Wang X. Complex clinical manifestations and new insights in RNA sequencing of children with diabetes and WFS1 variants. Front Endocrinol (Lausanne) 2023; 14:1066320. [PMID: 36967753 PMCID: PMC10031778 DOI: 10.3389/fendo.2023.1066320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 02/13/2023] [Indexed: 03/09/2023] Open
Abstract
BACKGROUND WFS1-related disorders involve a wide range of clinical phenotypes, including diabetes mellitus and neurodegeneration. Inheritance patterns of pathogenic variants of this gene can be autosomal recessive or dominant, and differences in penetrance present challenges for accurate diagnosis and genetic counselling. METHODS Three probands and one elder brother from three families were systematically evaluated and the clinical data of other family members were collected from the medical history. Whole-exome sequencing was performed on the probands, and RNA sequencing was performed on four patients, their parents with WFS1 variants, and four gender- and age-matched children with type 1 diabetes mellitus. RESULTS There were six patients with diabetes. Dilated cardiomyopathy, a rare manifestation of WFS1-related disease, was identified in one patient, along with MRI findings of brain atrophy at age 7 years and 3 months, the earliest age of discovery we know of. Whole-exome sequencing revealed five pathogenic or likely pathogenic variants in the WFS1 gene, including c.1348dupC (p.His450Profs*93), c.1381A>C (p.Thr461pro), c.1329C>G (p.Ser443Arg), c.2081delA (p.Glu694Glyfs*16), c.1350-1356delinsGCA (p.His450Glnfs*26), of which 3 variants (c.1348dupC, c.2081delA, c.1350-1356delinsGCA) were novel that have not been previously reported. The differentially expressed genes were mainly associated with immune-related pathways according to the Gene Ontology enrichment analysis of the RNA sequencing data. The exon 1 region of HLA-DRB1 in two patients was not transcribed, while the transcription of the region in their parents was normal. CONCLUSION This study emphasizes the clinical and genetic heterogeneity in patients, even in the same family with WFS1 variants. MRI evaluation of the brain should be considered when WFS1-related disorder is first diagnosed.
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Affiliation(s)
- Yu Ding
- Department of Endocrinology and Metabolism, Shanghai Children’s Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhe Li
- CAS Key Laboratory of Computational Biology, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Qianwen Zhang
- Department of Endocrinology and Metabolism, Shanghai Children’s Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Niu Li
- Department of Medical Genetics and Molecular Diagnostic Laboratory, Shanghai Children’s Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guoying Chang
- Department of Endocrinology and Metabolism, Shanghai Children’s Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yirou Wang
- Department of Endocrinology and Metabolism, Shanghai Children’s Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xin Li
- Department of Endocrinology and Metabolism, Shanghai Children’s Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Juan Li
- Department of Endocrinology and Metabolism, Shanghai Children’s Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qun Li
- Department of Endocrinology and Metabolism, Shanghai Children’s Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ru-en Yao
- Department of Medical Genetics and Molecular Diagnostic Laboratory, Shanghai Children’s Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xin Li
- CAS Key Laboratory of Computational Biology, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
- *Correspondence: Xiumin Wang, ; Xin Li,
| | - Xiumin Wang
- Department of Endocrinology and Metabolism, Shanghai Children’s Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Xiumin Wang, ; Xin Li,
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9
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Mair H, Fowler N, Papatzanaki ME, Sudhakar P, Maldonado RS. Novel missense WFS1 variant causing autosomal dominant atypical Wolfram syndrome. Ophthalmic Genet 2022; 43:567-572. [PMID: 35450504 DOI: 10.1080/13816810.2022.2068038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 04/02/2022] [Accepted: 04/10/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND In contrast to the classic autosomal recessive Wolfram syndrome, Wolfram-like syndrome (WLS) is an autosomal dominant disease caused by heterozygous variants in the WFS1 gene. Here, we present deep phenotyping of a mother and son with a WFS1 variant NM_006005.3:c.2508 G > T, p. (Lys836Asn) detected with next-generation sequencing, which is novel at the nucleotide level. In this Greek family, the proband and mother had sensorineural hearing loss and mild non-progressive vision loss with optic nerve atrophy. An initial optic atrophy panel that did not test for WFS1 was unremarkable, but a broader inherited retinal dystrophy panel found the WFS1 variant. CONCLUSION This study highlights the importance of including WFS1 sequencing in the evaluation of optic nerve atrophy to discover syndromic conditions.
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Affiliation(s)
- Hailey Mair
- Department of Ophthalmology and Visual Sciences-Ophthalmic Genetics Service, University of Kentucky, Lexington, Kentucky, USA
| | - Nicholas Fowler
- Department of Ophthalmology and Visual Sciences-Ophthalmic Genetics Service, University of Kentucky, Lexington, Kentucky, USA
| | | | - Padmaja Sudhakar
- Department of Ophthalmology and Visual Sciences-Ophthalmic Genetics Service, University of Kentucky, Lexington, Kentucky, USA
- Department of Neurology, University of Kentucky, Lexington, Kentucky, USA
| | - Ramiro S Maldonado
- Department of Ophthalmology and Visual Sciences-Ophthalmic Genetics Service, University of Kentucky, Lexington, Kentucky, USA
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10
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Smetek M, Gadzalska K, Jakiel P, Grzybowska J, Mysliwiec M, Borowiec M, Zmysłowska A. Wolfram-like syndrome - another face of a rare disease in children. J Pediatr Endocrinol Metab 2022; 35:121-124. [PMID: 34643356 DOI: 10.1515/jpem-2021-0348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 09/27/2021] [Indexed: 01/23/2023]
Abstract
OBJECTIVES The presence of two pathogenic variants in the WFS1 gene leads to the occurrence of a rare genetic disease in children - Wolfram syndrome (WFS), which includes insulin-dependent diabetes mellitus (DM), optic atrophy (OA), diabetes insipidus (DI), and deafness (D). However, the presence of a single mutation in the WFS1 gene results in a number of other autosomal dominant inherited diseases, including Wolfram-like syndrome (WFS-like). CASE PRESENTATION A 10-year-old boy was referred to the Genetic Outpatient Clinic with suspected WFS based on the coexistence of D, type 1 DM, short stature, and abnormalities in ophthalmologic examination (astigmatism and OA due to the optical coherence tomography result). The genetic analysis did not confirm WFS syndrome in the boy but identified a single likely pathogenic de novo variant in the WFS1 gene, which confirmed WFS-like syndrome. CONCLUSIONS Currently, the patient is under the care of an endocrinologist, diabetologist, ophthalmologist, audiologist, and also psychologist because of mood disorders.
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Affiliation(s)
- Mariusz Smetek
- Department of Pediatrics, Diabetology and Endocrinology, Medical University of Gdansk, Gdansk, Poland
| | - Karolina Gadzalska
- Department of Clinical Genetics, Medical University of Lodz, Lodz, Poland
| | - Paulina Jakiel
- Department of Clinical Genetics, Medical University of Lodz, Lodz, Poland
| | - Julia Grzybowska
- Department of Clinical Genetics, Medical University of Lodz, Lodz, Poland
| | - Malgorzata Mysliwiec
- Department of Pediatrics, Diabetology and Endocrinology, Medical University of Gdansk, Gdansk, Poland
| | - Maciej Borowiec
- Department of Clinical Genetics, Medical University of Lodz, Lodz, Poland
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11
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Van Heurck R, Carminho-Rodrigues MT, Ranza E, Stafuzza C, Quteineh L, Gehrig C, Hammar E, Guipponi M, Abramowicz M, Senn P, Guinand N, Cao-Van H, Paoloni-Giacobino A. Benefits of Exome Sequencing in Children with Suspected Isolated Hearing Loss. Genes (Basel) 2021; 12:genes12081277. [PMID: 34440452 PMCID: PMC8391342 DOI: 10.3390/genes12081277] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 08/03/2021] [Accepted: 08/18/2021] [Indexed: 12/12/2022] Open
Abstract
Purpose: Hearing loss is characterized by an extensive genetic heterogeneity and remains a common disorder in children. Molecular diagnosis is of particular benefit in children, and permits the early identification of clinically-unrecognized hearing loss syndromes, which permits effective clinical management and follow-up, including genetic counselling. Methods: We performed whole-exome sequencing with the analysis of a panel of 189 genes associated with hearing loss in a prospective cohort of 61 children and 9 adults presenting mainly with isolated hearing loss. Results: The overall diagnostic rate using exome sequencing was 47.2% (52.5% in children; 22% in adults). In children with confirmed molecular results, 17/32 (53.2%) showed autosomal recessive inheritance patterns, 14/32 (43.75%) showed an autosomal dominant condition, and one case had X-linked hearing loss. In adults, the two patients showed an autosomal dominant inheritance pattern. Among the 32 children, 17 (53.1%) had nonsyndromic hearing loss and 15 (46.7%) had syndromic hearing loss. One adult was diagnosed with syndromic hearing loss and one with nonsyndromic hearing loss. The most common causative genes were STRC (5 cases), GJB2 (3 cases), COL11A1 (3 cases), and ACTG1 (3 cases). Conclusions: Exome sequencing has a high diagnostic yield in children with hearing loss and can reveal a syndromic hearing loss form before other organs/systems become involved, allowing the surveillance of unrecognized present and/or future complications associated with these syndromes.
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Affiliation(s)
- Roxane Van Heurck
- Division of Genetic Medicine, Geneva University Hospitals, 1205 Geneva, Switzerland; (R.V.H.); (M.T.C.-R.); (E.R.); (L.Q.); (C.G.); (E.H.); (M.G.); (M.A.)
| | - Maria Teresa Carminho-Rodrigues
- Division of Genetic Medicine, Geneva University Hospitals, 1205 Geneva, Switzerland; (R.V.H.); (M.T.C.-R.); (E.R.); (L.Q.); (C.G.); (E.H.); (M.G.); (M.A.)
| | - Emmanuelle Ranza
- Division of Genetic Medicine, Geneva University Hospitals, 1205 Geneva, Switzerland; (R.V.H.); (M.T.C.-R.); (E.R.); (L.Q.); (C.G.); (E.H.); (M.G.); (M.A.)
| | - Caterina Stafuzza
- Ear-Nose-Throat/Head and Neck Surgery Division, Geneva University Hospitals, 1205 Geneva, Switzerland; (C.S.); (P.S.); (N.G.); (H.C.-V.)
| | - Lina Quteineh
- Division of Genetic Medicine, Geneva University Hospitals, 1205 Geneva, Switzerland; (R.V.H.); (M.T.C.-R.); (E.R.); (L.Q.); (C.G.); (E.H.); (M.G.); (M.A.)
| | - Corinne Gehrig
- Division of Genetic Medicine, Geneva University Hospitals, 1205 Geneva, Switzerland; (R.V.H.); (M.T.C.-R.); (E.R.); (L.Q.); (C.G.); (E.H.); (M.G.); (M.A.)
| | - Eva Hammar
- Division of Genetic Medicine, Geneva University Hospitals, 1205 Geneva, Switzerland; (R.V.H.); (M.T.C.-R.); (E.R.); (L.Q.); (C.G.); (E.H.); (M.G.); (M.A.)
| | - Michel Guipponi
- Division of Genetic Medicine, Geneva University Hospitals, 1205 Geneva, Switzerland; (R.V.H.); (M.T.C.-R.); (E.R.); (L.Q.); (C.G.); (E.H.); (M.G.); (M.A.)
| | - Marc Abramowicz
- Division of Genetic Medicine, Geneva University Hospitals, 1205 Geneva, Switzerland; (R.V.H.); (M.T.C.-R.); (E.R.); (L.Q.); (C.G.); (E.H.); (M.G.); (M.A.)
| | - Pascal Senn
- Ear-Nose-Throat/Head and Neck Surgery Division, Geneva University Hospitals, 1205 Geneva, Switzerland; (C.S.); (P.S.); (N.G.); (H.C.-V.)
| | - Nils Guinand
- Ear-Nose-Throat/Head and Neck Surgery Division, Geneva University Hospitals, 1205 Geneva, Switzerland; (C.S.); (P.S.); (N.G.); (H.C.-V.)
| | - Helene Cao-Van
- Ear-Nose-Throat/Head and Neck Surgery Division, Geneva University Hospitals, 1205 Geneva, Switzerland; (C.S.); (P.S.); (N.G.); (H.C.-V.)
| | - Ariane Paoloni-Giacobino
- Division of Genetic Medicine, Geneva University Hospitals, 1205 Geneva, Switzerland; (R.V.H.); (M.T.C.-R.); (E.R.); (L.Q.); (C.G.); (E.H.); (M.G.); (M.A.)
- Correspondence:
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12
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Lenaers G, Neutzner A, Le Dantec Y, Jüschke C, Xiao T, Decembrini S, Swirski S, Kieninger S, Agca C, Kim US, Reynier P, Yu-Wai-Man P, Neidhardt J, Wissinger B. Dominant optic atrophy: Culprit mitochondria in the optic nerve. Prog Retin Eye Res 2021; 83:100935. [PMID: 33340656 DOI: 10.1016/j.preteyeres.2020.100935] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 12/05/2020] [Accepted: 12/09/2020] [Indexed: 12/14/2022]
Abstract
Dominant optic atrophy (DOA) is an inherited mitochondrial disease leading to specific degeneration of retinal ganglion cells (RGCs), thus compromising transmission of visual information from the retina to the brain. Usually, DOA starts during childhood and evolves to poor vision or legal blindness, affecting the central vision, whilst sparing the peripheral visual field. In 20% of cases, DOA presents as syndromic disorder, with secondary symptoms affecting neuronal and muscular functions. Twenty years ago, we demonstrated that heterozygous mutations in OPA1 are the most frequent molecular cause of DOA. Since then, variants in additional genes, whose functions in many instances converge with those of OPA1, have been identified by next generation sequencing. OPA1 encodes a dynamin-related GTPase imported into mitochondria and located to the inner membrane and intermembrane space. The many OPA1 isoforms, resulting from alternative splicing of three exons, form complex homopolymers that structure mitochondrial cristae, and contribute to fusion of the outer membrane, thus shaping the whole mitochondrial network. Moreover, OPA1 is required for oxidative phosphorylation, maintenance of mitochondrial genome, calcium homeostasis and regulation of apoptosis, thus making OPA1 the Swiss army-knife of mitochondria. Understanding DOA pathophysiology requires the understanding of RGC peculiarities with respect to OPA1 functions. Besides the tremendous energy requirements of RGCs to relay visual information from the eye to the brain, these neurons present unique features related to their differential environments in the retina, and to the anatomical transition occurring at the lamina cribrosa, which parallel major adaptations of mitochondrial physiology and shape, in the pre- and post-laminar segments of the optic nerve. Three DOA mouse models, with different Opa1 mutations, have been generated to study intrinsic mechanisms responsible for RGC degeneration, and these have further revealed secondary symptoms related to mitochondrial dysfunctions, mirroring the more severe syndromic phenotypes seen in a subgroup of patients. Metabolomics analyses of cells, mouse organs and patient plasma mutated for OPA1 revealed new unexpected pathophysiological mechanisms related to mitochondrial dysfunction, and biomarkers correlated quantitatively to the severity of the disease. Here, we review and synthesize these data, and propose different approaches for embracing possible therapies to fulfil the unmet clinical needs of this disease, and provide hope to affected DOA patients.
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Affiliation(s)
- Guy Lenaers
- MitoLab Team, UMR CNRS 6015 - INSERM U1083, Institut MitoVasc, Angers University and Hospital, Angers, France.
| | - Albert Neutzner
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland; Department of Ophthalmology University Hospital Basel, University of Basel, Basel, Switzerland.
| | - Yannick Le Dantec
- MitoLab Team, UMR CNRS 6015 - INSERM U1083, Institut MitoVasc, Angers University and Hospital, Angers, France
| | - Christoph Jüschke
- Human Genetics, Faculty VI - School of Medicine and Health Sciences, University of Oldenburg, Oldenburg, Germany
| | - Ting Xiao
- Molecular Genetics Laboratory, Institute for Ophthalmic Research, Center for Ophthalmology, University of Tübingen, Tübingen, Germany
| | - Sarah Decembrini
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland; Department of Ophthalmology University Hospital Basel, University of Basel, Basel, Switzerland
| | - Sebastian Swirski
- Human Genetics, Faculty VI - School of Medicine and Health Sciences, University of Oldenburg, Oldenburg, Germany
| | - Sinja Kieninger
- Molecular Genetics Laboratory, Institute for Ophthalmic Research, Center for Ophthalmology, University of Tübingen, Tübingen, Germany
| | - Cavit Agca
- Molecular Biology, Genetics and Bioengineering Program, Sabanci University, Istanbul, Turkey; Nanotechnology Research and Application Center (SUNUM), Sabanci University, Istanbul, Turkey
| | - Ungsoo S Kim
- Kim's Eye Hospital, Seoul, South Korea; Cambridge Centre for Brain Repair and MRC Mitochondrial Biology Unit, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK; Cambridge Eye Unit, Addenbrooke's Hospital, Cambridge University Hospitals, Cambridge, UK; Moorfields Eye Hospital, London, UK
| | - Pascal Reynier
- MitoLab Team, UMR CNRS 6015 - INSERM U1083, Institut MitoVasc, Angers University and Hospital, Angers, France; Department of Biochemistry, University Hospital of Angers, Angers, France
| | - Patrick Yu-Wai-Man
- Cambridge Centre for Brain Repair and MRC Mitochondrial Biology Unit, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK; Cambridge Eye Unit, Addenbrooke's Hospital, Cambridge University Hospitals, Cambridge, UK; Moorfields Eye Hospital, London, UK; UCL Institute of Ophthalmology, University College London, London, UK
| | - John Neidhardt
- Human Genetics, Faculty VI - School of Medicine and Health Sciences, University of Oldenburg, Oldenburg, Germany; Research Center Neurosensory Science, University Oldenburg, Oldenburg, Germany.
| | - Bernd Wissinger
- Molecular Genetics Laboratory, Institute for Ophthalmic Research, Center for Ophthalmology, University of Tübingen, Tübingen, Germany.
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13
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Acharya A, Raza SI, Anwar MZ, Bharadwaj T, Liaqat K, Khokhar MAS, Everard JL, Nasir A, Nickerson DA, Bamshad MJ, Ansar M, Schrauwen I, Ahmad W, Leal SM. Wolfram-like syndrome with bicuspid aortic valve due to a homozygous missense variant in CDK13. J Hum Genet 2021; 66:1009-1018. [PMID: 33879837 PMCID: PMC8472924 DOI: 10.1038/s10038-021-00922-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/17/2021] [Accepted: 03/18/2021] [Indexed: 12/03/2022]
Abstract
Background Wolfram syndrome (WFS) is characterized by deafness, diabetes mellitus, and diabetes insipidus along with optic atrophy. WFS has an autosomal recessive mode of inheritance and is due to variants in WFS1 and CISD2. Methods We evaluated the underlying molecular etiology of three affected members of a consanguineous family with hearing impairment, bicuspid aortic valve, diabetes mellitus and insipidus, clinodactyly, and gastrointestinal tract abnormalities via exome sequencing approach. We correlated clinical and imaging data with the genetic findings and their associated phenotypes. Results We identified a homozygous missense variant p.(Asn1097Lys) in CDK13, a gene previously associated with autosomal dominant congenital heart defects, dysmorphic facial features, clinodactyly, gastrointestinal tract abnormalities, intellectual developmental disorder, and seizures with variable phenotypic features. Conclusion We report a homozygous variant in CDK13 and suggest that this gene causes an autosomal recessive disorder with hearing impairment, bicuspid aortic valve, diabetes mellitus and insipidus, clinodactyly, and gastrointestinal tract abnormalities.
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Affiliation(s)
- Anushree Acharya
- Center for Statistical Genetics, Gertrude H. Sergievsky Center, and the Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Syed Irfan Raza
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan.,Department of Biochemistry, HBS Medical and Dental College, Islamabad, Pakistan
| | | | - Thashi Bharadwaj
- Center for Statistical Genetics, Gertrude H. Sergievsky Center, and the Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Khurram Liaqat
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | | | - Jenna L Everard
- Center for Statistical Genetics, Gertrude H. Sergievsky Center, and the Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Abdul Nasir
- Synthetic Protein Engineering Lab (SPEL), Department of Molecular Science and Technology, Ajou University, Suwon, South Korea
| | | | | | - Michael J Bamshad
- Department of Genome Sciences, University of Washington, Seattle, WA, USA.,Department of Pediatrics, University of Washington, Seattle, WA, USA
| | - Muhammad Ansar
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Isabelle Schrauwen
- Center for Statistical Genetics, Gertrude H. Sergievsky Center, and the Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Wasim Ahmad
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Suzanne M Leal
- Center for Statistical Genetics, Gertrude H. Sergievsky Center, and the Department of Neurology, Columbia University Medical Center, New York, NY, USA. .,Taub Institute for Alzheimer's Disease and The Aging Brain, Columbia University Medical Center, New York, NY, USA.
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14
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Abu-El-Haija A, McGowan C, Vanderveen D, Bodamer O. Autosomal-dominant WFS1-related disorder-Report of a novel WFS1 variant and review of the phenotypic spectrum of autosomal recessive and dominant forms. Am J Med Genet A 2020; 185:528-533. [PMID: 33179441 DOI: 10.1002/ajmg.a.61945] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 10/04/2020] [Accepted: 10/12/2020] [Indexed: 12/17/2022]
Abstract
Wolfram syndrome was initially reported as an autosomal recessive (AR), progressive neurodegenerative disorder that leads to diabetes insipidus, childhood onset diabetes mellitus (DM), optic atrophy, and deafness (D) also known as DIDMOAD. However, heterozygous dominant pathogenic variants in Wolfram syndrome type 1 (WFS1) may lead to distinct, allelic conditions, described as isolated sensorineural hearing loss (SNHL), syndromic SNHL, congenital cataracts, or early onset DM. We report a family with a novel dominant, likely pathogenic variant in WFS1 (NM_006005.3) c.2605_2616del12 (p.Ser869_His872del), resulting in cataracts, SNHL, and DM in a female and her mother. A maternal aunt had cataracts, DM, and SNHL but was not tested for the familial WFS1 mutation. Both the mother and maternal aunt had early menopause by age 43 years and infertility which may be a coincidental finding that has not been associated with autosomal dominant AD WFS1-related disorder to the best of our knowledge. Screening at risk individuals in families with the AR Wolfram syndrome, for DM, SNHL, and for cataracts is indicated.
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Affiliation(s)
- Aya Abu-El-Haija
- Division of Genetics and Genomics, Department of Pediatrics, Boston Children's Hospital, Boston, MA, USA.,Department of Medical Oncology, Dana Farber Cancer Institute, Boston, MA, USA
| | - Caroline McGowan
- Division of Genetics and Genomics, Department of Pediatrics, Boston Children's Hospital, Boston, MA, USA
| | - Deborah Vanderveen
- Department of Ophthalmology, Boston Children's Hospital, Boston, MA, USA
| | - Olaf Bodamer
- Division of Genetics and Genomics, Department of Pediatrics, Boston Children's Hospital, Boston, MA, USA
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15
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Eizirik DL, Pasquali L, Cnop M. Pancreatic β-cells in type 1 and type 2 diabetes mellitus: different pathways to failure. Nat Rev Endocrinol 2020; 16:349-362. [PMID: 32398822 DOI: 10.1038/s41574-020-0355-7] [Citation(s) in RCA: 408] [Impact Index Per Article: 102.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/24/2020] [Indexed: 12/12/2022]
Abstract
Loss of functional β-cell mass is the key mechanism leading to the two main forms of diabetes mellitus - type 1 diabetes mellitus (T1DM) and type 2 diabetes mellitus (T2DM). Understanding the mechanisms behind β-cell failure is critical to prevent or revert disease. Basic pathogenic differences exist in the two forms of diabetes mellitus; T1DM is immune mediated and T2DM is mediated by metabolic mechanisms. These mechanisms differentially affect early β-cell dysfunction and eventual fate. Over the past decade, major advances have been made in the field, mostly delivered by studies on β-cells in human disease. These advances include studies of islet morphology and human β-cell gene expression in T1DM and T2DM, the identification and characterization of the role of T1DM and T2DM candidate genes at the β-cell level and the endoplasmic reticulum stress signalling that contributes to β-cell failure in T1DM (mostly IRE1 driven) and T2DM (mostly PERK-eIF2α dependent). Here, we review these new findings, focusing on studies performed on human β-cells or on samples obtained from patients with diabetes mellitus.
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Affiliation(s)
- Décio L Eizirik
- ULB Center for Diabetes Research, Welbio Investigator, Medical Faculty, Université Libre de Bruxelles, Brussels, Belgium.
- Indiana Biosciences Research Institute (IBRI), Indianapolis, IN, USA.
| | - Lorenzo Pasquali
- Endocrine Regulatory Genomics, Department of Experimental & Health Sciences, University Pompeu Fabra, Barcelona, Spain.
- Germans Trias i Pujol University Hospital and Research Institute, Badalona, Spain.
- Josep Carreras Leukaemia Research Institute, Barcelona, Spain.
| | - Miriam Cnop
- ULB Center for Diabetes Research, Université Libre de Bruxelles, Brussels, Belgium.
- Division of Endocrinology, Erasmus Hospital, Université Libre de Bruxelles, Brussels, Belgium.
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16
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Genetic and clinical aspects of Wolfram syndrome 1, a severe neurodegenerative disease. Pediatr Res 2018; 83:921-929. [PMID: 29774890 DOI: 10.1038/pr.2018.17] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 12/31/2017] [Indexed: 12/14/2022]
Abstract
Wolfram syndrome 1 (WS1) is a rare autosomal recessive neurodegenerative disease characterized by diabetes insipidus, diabetes mellitus, optic atrophy, deafness, and other abnormalities. WS1 usually results in death before the age of 50 years. The pathogenesis of WS1 is ascribed to mutations of human WFS1 gene on chromosome 4p encoding a transmembrane protein called wolframin, which has physiological functions in membrane trafficking, secretion, processing, and/or regulation of ER calcium homeostasis. Different types of WFS1 mutations have been identified, and some of these have been associated with a dominant, severe type of WS. Mutations of CISD2 gene cause autosomal recessive Wolfram syndrome 2 (WS2) characterized by the absence of diabetes insipidus and psychiatric disorders, and by bleeding upper intestinal ulcer and defective platelet aggregation. Other WFS1-related disorders such as DFNA6/14/38 nonsyndromic low-frequency sensorineural hearing loss and Wolfram syndrome-like disease with autosomal dominant transmission have been described. WS1 is a devastating disease for the patients and their families. Thus, early diagnosis is imperative to enable proper prognostication, prevent complications, and reduce the transmission to further progeny. Although there is currently no effective therapy, potential new drugs have been introduced, attempting to improve the progression of this fatal disease.
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17
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Delprat B, Maurice T, Delettre C. Wolfram syndrome: MAMs' connection? Cell Death Dis 2018; 9:364. [PMID: 29511163 PMCID: PMC5840383 DOI: 10.1038/s41419-018-0406-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 02/13/2018] [Accepted: 02/13/2018] [Indexed: 12/28/2022]
Abstract
Wolfram syndrome (WS) is a rare neurodegenerative disease, the main pathological hallmarks of which associate with diabetes, optic atrophy, and deafness. Other symptoms may be identified in some but not all patients. Prognosis is poor, with death occurring around 35 years of age. To date, no treatment is available. WS was first described as a mitochondriopathy. However, the localization of the protein on the endoplasmic reticulum (ER) membrane challenged this hypothesis. ER contacts mitochondria to ensure effective Ca2+ transfer, lipids transfer, and apoptosis within stabilized and functionalized microdomains, termed “mitochondria-associated ER membranes” (MAMs). Two types of WS are characterized so far and Wolfram syndrome type 2 is due to mutation in CISD2, a protein mostly expressed in MAMs. The aim of the present review is to collect evidences showing that WS is indeed a mitochondriopathy, with established MAM dysfunction, and thus share commonalities with several neurodegenerative diseases, including Alzheimer’s disease, Parkinson’s disease, and amyotrophic lateral sclerosis, as well as metabolic diseases, such as diabetes.
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Affiliation(s)
- Benjamin Delprat
- INSERM UMR-S1198, 34095, Montpellier, France. .,University of Montpellier, 34095, Montpellier, France.
| | - Tangui Maurice
- INSERM UMR-S1198, 34095, Montpellier, France.,University of Montpellier, 34095, Montpellier, France
| | - Cécile Delettre
- University of Montpellier, 34095, Montpellier, France. .,INSERM UMR-S1051, Institute of Neurosciences of Montpellier, 34090, Montpellier, France.
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18
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Niu Z, Feng Y, Hu Z, Li J, Sun J, Chen H, He C, Wang X, Jiang L, Liu Y, Cai X, Wang L, Cai Y, Liu X, Mei L. Exome sequencing identifies a novel missense mutation of WFS1 as the cause of non-syndromic low-frequency hearing loss in a Chinese family. Int J Pediatr Otorhinolaryngol 2017; 100:1-7. [PMID: 28802351 DOI: 10.1016/j.ijporl.2017.06.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 05/05/2017] [Accepted: 06/13/2017] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Autosomal dominant non-syndromic low-frequency sensorineural hearing loss (LFSNHL) DFNA6/14/38 is an uncommon type of hearing loss that classically affects low frequencies of 2000 Hz and below, demonstrating an ascending configuration. The current study aimed to investigate the cause of LFSNHL in a five-generation Chinese family. METHODS The phenotype of the Chinese family was characterized using audiologic testing and pedigree analysis. The combined approach of array screening and whole-exome sequencing was used to identify the disease-causing gene in this family. RESULTS This pedigree, in which the affected subjects presented isolated low-frequency sensorineural hearing impairment with childhood onset, was associated with autosomal dominant inheritance of the c.2591A > G mutation in exon 8 of the Wolframin syndrome 1 (WFS1) gene which was not present in 286 unrelated controls with matched ancestry and is highly conserved across species. In addition, several mutations affecting the Glu864 residue have been previously identified in different populations, suggesting that this site is likely to be a mutational hot spot. CONCLUSIONS We identified a novel substitution, Glu864Gly, of WFS1 as the causative variant for this pedigree. Our data extend the mutation spectrum of the WFS1 gene in Chinese individuals and may contribute to establishing a better genotype-phenotype correlation for LFSNHL.
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Affiliation(s)
- Zhijie Niu
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, 410008, China; Department of Otolaryngology (D-48), University of Miami Miller School of Medicine, 1666 NW 12th Avenue, Miami, FL 33136, USA
| | - Yong Feng
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, 410008, China; State Key Laboratory of Medical Genetics, Central South University, Changsha, 410078, China
| | - Zhengmao Hu
- State Key Laboratory of Medical Genetics, Central South University, Changsha, 410078, China
| | - Jiada Li
- State Key Laboratory of Medical Genetics, Central South University, Changsha, 410078, China
| | - Jie Sun
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, 410008, China; Department of Otorhinolaryngology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830011, China
| | - Hongsheng Chen
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, 410008, China
| | - Chufeng He
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, 410008, China
| | - Xueping Wang
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, 410008, China
| | - Lu Jiang
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, 410008, China
| | - Yalan Liu
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, 410008, China
| | - Xinzhang Cai
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, 410008, China
| | - Lili Wang
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, 410008, China
| | - Yuxiang Cai
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, 410008, China
| | - Xuezhong Liu
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, 410008, China; Department of Otolaryngology (D-48), University of Miami Miller School of Medicine, 1666 NW 12th Avenue, Miami, FL 33136, USA
| | - Lingyun Mei
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, 410008, China.
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Kasakura-Kimura N, Masuda M, Mutai H, Masuda S, Morimoto N, Ogahara N, Misawa H, Sakamoto H, Saito K, Matsunaga T. WFS1andGJB2mutations in patients with bilateral low-frequency sensorineural hearing loss. Laryngoscope 2017; 127:E324-E329. [DOI: 10.1002/lary.26528] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 12/20/2016] [Accepted: 01/10/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Natsuko Kasakura-Kimura
- Division of Hearing and Balance Research; National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center; Tokyo Japan
- Department of Otolaryngology; School of Medicine, Kyorin University; Tokyo Japan
| | - Masatsugu Masuda
- Division of Hearing and Balance Research; National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center; Tokyo Japan
- Department of Otolaryngology; School of Medicine, Kyorin University; Tokyo Japan
| | - Hideki Mutai
- Division of Hearing and Balance Research; National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center; Tokyo Japan
| | - Sawako Masuda
- Department of Otolaryngology; National Mie Hospital; Mie Japan
| | - Noriko Morimoto
- Division of Otolaryngology; National Center for Child Health and Development; Tokyo Japan
| | - Noboru Ogahara
- Department of Otolaryngology; Kanagawa Children's Medical Center; Kanagawa Japan
| | - Hayato Misawa
- Department of Otolaryngology; National Hospital Organization Nagoya Medical Center; Aichi Japan
| | - Hirokazu Sakamoto
- Department of Otolaryngology; Hyogo Prefectural Kobe Children's Hospital; Hyogo Japan
| | - Koichiro Saito
- Department of Otolaryngology; School of Medicine, Kyorin University; Tokyo Japan
| | - Tatsuo Matsunaga
- Division of Hearing and Balance Research; National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center; Tokyo Japan
- Medical Genetics Center; National Hospital Organization Tokyo Medical Center; Tokyo Japan
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20
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Prochazkova D, Hruba Z, Konecna P, Skotakova J, Fajkusova L. A p.(Glu809Lys) Mutation in the WFS1 Gene Associated with Wolfram-like Syndrome: A Case Report. J Clin Res Pediatr Endocrinol 2016; 8:482-483. [PMID: 27217304 PMCID: PMC5198010 DOI: 10.4274/jcrpe.3021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Wolfram-like syndrome (WFSL) is a rare autosomal dominant disease characterised by congenital progressive hearing loss, diabetes mellitus, and optic atrophy. The patient was a boy with the juvenile form of diabetes mellitus and findings which clinically matched the symptoms of Wolfram syndrome. At the age of 3 1/4 years, diabetes mellitus was diagnosed in this boy who also had severe psychomotor retardation, failure to thrive, a dysmorphic face with Peters anomaly type 3 (i.e. posterior central defect with stromal opacity of the cornea, adhering stripes of the iris, and cataract with corneolenticular adhesion), congenital glaucoma, megalocornea, severe hearing impairment, a one-sided deformity of the auricle with atresia of the bony and soft external auditory canal, non-differentiable eardrum, missing os incus, hypothyreosis, and nephrocalcinosis. Molecular-genetic examinations revealed a de novo mutation p.(Glu809Lys) in the WFS1 gene. No mutations were detected in the biological parents. The mutation p.(Glu809Lys) in the WFS1 gene is associated with WFSL.
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Affiliation(s)
- Dagmar Prochazkova
- Medical Faculty of Masaryk University and University Hospital Brno, Department of Pediatrics, Brno, Czech Republic, Phone: +420 532 234 962 E-mail:
| | - Zuzana Hruba
- Medical Faculty of Masaryk University and University Hospital Brno, Department of Internal Medicine, Division of Hematology and Oncology, Centre of Molecular Biology and Gene Therapy, Brno, Czech Republic
| | - Petra Konecna
- Medical Faculty of Masaryk University and University Hospital Brno, Department of Pediatrics, Brno, Czech Republic
| | - Jarmila Skotakova
- Medical Faculty of Masaryk University and University Hospital Brno, Department of Pediatric Radiology, Brno, Czech Republic
| | - Lenka Fajkusova
- Medical Faculty of Masaryk University and University Hospital Brno, Department of Internal Medicine, Division of Hematology and Oncology, Centre of Molecular Biology and Gene Therapy, Brno, Czech Republic
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21
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Guy C, Wang X, Lu X, Lu J, Li S. Clinical report: variable phenotypic expression in a large sibling cohort with a deletion of 4p16.1. Clin Case Rep 2016; 4:913-918. [PMID: 27761238 PMCID: PMC5054462 DOI: 10.1002/ccr3.638] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 04/25/2016] [Accepted: 07/03/2016] [Indexed: 11/10/2022] Open
Abstract
We report a half-sibling cohort with deletion of 4p16.1, astigmatism, gross and fine motor delay, variable intellectual disability, and variable behavioral concerns. However, two siblings without the deletion also had learning delays and psychological concerns. Thus, variable phenotypic expression was seen and the significance of deletion of 4p16.1 remains unclear.
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Affiliation(s)
- Carrie Guy
- University of Oklahoma Health Sciences Center Oklahoma City Oklahoma USA
| | - Xianfu Wang
- University of Oklahoma Health Sciences Center Oklahoma City Oklahoma USA
| | - Xianglan Lu
- University of Oklahoma Health Sciences Center Oklahoma City Oklahoma USA
| | - Jin Lu
- University of Oklahoma Health Sciences Center Oklahoma City Oklahoma USA
| | - Shibo Li
- University of Oklahoma Health Sciences Center Oklahoma City Oklahoma USA
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22
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Grenier J, Meunier I, Daien V, Baudoin C, Halloy F, Bocquet B, Blanchet C, Delettre C, Esmenjaud E, Roubertie A, Lenaers G, Hamel CP. WFS1 in Optic Neuropathies: Mutation Findings in Nonsyndromic Optic Atrophy and Assessment of Clinical Severity. Ophthalmology 2016; 123:1989-98. [PMID: 27395765 DOI: 10.1016/j.ophtha.2016.05.036] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 05/20/2016] [Accepted: 05/20/2016] [Indexed: 01/22/2023] Open
Abstract
PURPOSE To search for WFS1 mutations in patients with optic atrophy (OA) and assess visual impairment. DESIGN Retrospective molecular genetic and clinical study. PARTICIPANTS Patients with OA followed at a national referral center specialized in genetic sensory diseases. METHODS Mutation screening in WFS1 was performed by Sanger sequencing. WFS1-positive patients were evaluated on visual acuity (VA) and retinal nerve fiber layer (RNFL) thickness using time-domain (TD) or spectral-domain (SD) optical coherence tomography (OCT). Statistical analysis was performed. MAIN OUTCOME MEASURES Mutation identification, VA values, and RNFL thickness in sectors. RESULTS Biallelic WFS1 mutations were found in 3 of 24 unrelated patients (15%) with autosomal recessive nonsyndromic optic atrophy (arNSOA) and in 8 patients with autosomal recessive Wolfram syndrome (arWS) associated with diabetes mellitus and OA. Heterozygous mutations were found in 4 of 20 unrelated patients (20%) with autosomal dominant OA. The 4 WFS1-mutated patients of this latter group with hearing loss were diagnosed with autosomal dominant Wolfram-like syndrome (adWLS). Most patients had VA decrease, with logarithm of the minimum angle of resolution (logMAR) values lower in arWS than in arNSOA (1.530 vs. 0.440; P = 0.026) or adWLS (0.240; P = 0.006) but not differing between arNSOA and adWLS (P = 0.879). All patients had decreased RNFL thickness that was worse in arWS than in arNSOA (SD OCT, 35.50 vs. 53.80 μm; P = 0.018) or adWLS (TD-OCT, 45.84 vs. 59.33 μm; P = 0.049). The greatest difference was found in the inferior bundle. Visual acuity was negatively correlated with RNFL thickness (r = -0.89; P = 0.003 in SD OCT and r = -0.75; P = 0.01 in TD-OCT). CONCLUSIONS WFS1 is a gene causing arNSOA. Patients with this condition had significantly less visual impairment than those with arWS. Thus systematic screening of WFS1 must be performed in isolated, sporadic, or familial optic atrophies.
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Affiliation(s)
- Joanna Grenier
- Maladies Sensorielles Génétiques, CHRU, Montpellier, France; Department of Ophthalmology, CHRU, Montpellier, France
| | - Isabelle Meunier
- Maladies Sensorielles Génétiques, CHRU, Montpellier, France; INSERM U1051, Institute for Neurosciences of Montpellier, Montpellier, France; Université Montpellier, Montpellier, France
| | - Vincent Daien
- Department of Ophthalmology, CHRU, Montpellier, France; Université Montpellier, Montpellier, France; INSERM U1061, Montpellier, France
| | | | - François Halloy
- INSERM U1051, Institute for Neurosciences of Montpellier, Montpellier, France
| | - Béatrice Bocquet
- INSERM U1051, Institute for Neurosciences of Montpellier, Montpellier, France; Université Montpellier, Montpellier, France
| | - Catherine Blanchet
- Maladies Sensorielles Génétiques, CHRU, Montpellier, France; Department of ENT, CHRU, Montpellier, France
| | - Cécile Delettre
- INSERM U1051, Institute for Neurosciences of Montpellier, Montpellier, France; Université Montpellier, Montpellier, France
| | | | - Agathe Roubertie
- Maladies Sensorielles Génétiques, CHRU, Montpellier, France; Department of Pediatric Neurology, CHRU, Montpellier, France
| | - Guy Lenaers
- PREMMi, INSERM U1083, CNRS 6214, Angers, France
| | - Christian P Hamel
- Maladies Sensorielles Génétiques, CHRU, Montpellier, France; INSERM U1051, Institute for Neurosciences of Montpellier, Montpellier, France; Université Montpellier, Montpellier, France.
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23
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Moosajee M, Yu-Wai-Man P, Rouzier C, Bitner-Glindzicz M, Bowman R. Clinical utility gene card for: Wolfram syndrome. Eur J Hum Genet 2016; 24:ejhg201649. [PMID: 27222289 DOI: 10.1038/ejhg.2016.49] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 04/07/2016] [Accepted: 04/15/2016] [Indexed: 11/09/2022] Open
Affiliation(s)
- Mariya Moosajee
- Great Ormond Street Hospital, London, UK.,UCL Institute of Ophthalmology, London, UK.,Moorfields Eye Hospital, London, UK
| | - Patrick Yu-Wai-Man
- UCL Institute of Ophthalmology, London, UK.,Moorfields Eye Hospital, London, UK.,Wellcome Trust Centre for Mitochondrial Research, Institute of Genetic Medicine, Newcastle University, Newcastle, UK
| | - Cécile Rouzier
- Department of Medical Genetics, Archet 2 Hospital, CHU of Nice, Nice, France
| | | | - Richard Bowman
- Great Ormond Street Hospital, London, UK.,London School of Hygiene and Tropical Medicine, London, UK
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24
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Perrotta S, Di Iorgi N, Ragione FD, Scianguetta S, Borriello A, Allegri AEM, Ferraro M, Santoro C, Napoli F, Calcagno A, Giaccardi M, Cappa M, Salerno MC, Cozzolino D, Maghnie M. Early-onset central diabetes insipidus is associated with de novo arginine vasopressin-neurophysin II or Wolfram syndrome 1 gene mutations. Eur J Endocrinol 2015; 172:461-72. [PMID: 25740874 DOI: 10.1530/eje-14-0942] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Idiopathic early-onset central diabetes insipidus (CDI) might be due to mutations of arginine vasopressin-neurophysin II (AVP-NPII (AVP)) or wolframin (WFS1) genes. DESIGN AND METHODS Sequencing of AVP and WFS1 genes was performed in nine children with CDI, aged between 9 and 68 months, and negative family history for polyuria and polydipsia. RESULTS Two patients carried a mutation in the AVP gene: a heterozygous G-to-T transition at nucleotide position 322 of exon 2 (c.322G>T) resulting in a stop codon at position 108 (p.Glu108X), and a novel deletion from nucleotide 52 to 54 (c.52_54delTCC) producing a deletion of a serine at position 18 (p.Ser18del) of the AVP pre-prohormone signal peptide. A third patient carried two heterozygous mutations in the WFS1 gene localized on different alleles. The first change was A-to-G transition at nucleotide 997 in exon 8 (c.997A>G), resulting in a valine residue at position 333 in place of isoleucine (p.Ile333Val). The second novel mutation was a 3 bp insertion in exon 8, c.2392_2393insACG causing the addition of an aspartate residue at position 797 and the maintenance of the correct open reading frame (p. Asp797_Val798insAsp). While similar WFS1 protein levels were detected in fibroblasts from healthy subjects and from the patient and his parents, a major sensitivity to staurosporine-induced apoptosis was observed in the patient fibroblasts as well as in patients with Wolfram syndrome. CONCLUSIONS Early-onset CDI is associated with de novo mutations of the AVP gene and with hereditary WFS1 gene changes. These findings have valuable implications for management and genetic counseling.
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Affiliation(s)
- Silverio Perrotta
- Dipartimento della Donnadel Bambino e di Chirurgia Generale e Specialistica, Second University of Naples, via De Crecchio 4, Naples, ItalyIstituto Giannina GasliniUniversity of Genova, 16147 Genova, ItalyDepartment of BiochemistryBiophysics, and General Pathology, Second University of Naples, via De Crecchio 7, Naples, ItalyIstituto Giannina GasliniLargo Gerolamo Gaslini 5, 16147 Genova, ItalyUnit of Endocrinology and DiabetologyBambino Gesù Children's Hospital, IRCCS, Rome, ItalyPediatric Endocrinology UnitDepartment of Translational Medical Sciences, University 'Federico II' of Naples, Naples, ItalyDivision of Internal MedicineSecond University of Naples, 80100 Naples, Italy
| | - Natascia Di Iorgi
- Dipartimento della Donnadel Bambino e di Chirurgia Generale e Specialistica, Second University of Naples, via De Crecchio 4, Naples, ItalyIstituto Giannina GasliniUniversity of Genova, 16147 Genova, ItalyDepartment of BiochemistryBiophysics, and General Pathology, Second University of Naples, via De Crecchio 7, Naples, ItalyIstituto Giannina GasliniLargo Gerolamo Gaslini 5, 16147 Genova, ItalyUnit of Endocrinology and DiabetologyBambino Gesù Children's Hospital, IRCCS, Rome, ItalyPediatric Endocrinology UnitDepartment of Translational Medical Sciences, University 'Federico II' of Naples, Naples, ItalyDivision of Internal MedicineSecond University of Naples, 80100 Naples, Italy
| | - Fulvio Della Ragione
- Dipartimento della Donnadel Bambino e di Chirurgia Generale e Specialistica, Second University of Naples, via De Crecchio 4, Naples, ItalyIstituto Giannina GasliniUniversity of Genova, 16147 Genova, ItalyDepartment of BiochemistryBiophysics, and General Pathology, Second University of Naples, via De Crecchio 7, Naples, ItalyIstituto Giannina GasliniLargo Gerolamo Gaslini 5, 16147 Genova, ItalyUnit of Endocrinology and DiabetologyBambino Gesù Children's Hospital, IRCCS, Rome, ItalyPediatric Endocrinology UnitDepartment of Translational Medical Sciences, University 'Federico II' of Naples, Naples, ItalyDivision of Internal MedicineSecond University of Naples, 80100 Naples, Italy
| | - Saverio Scianguetta
- Dipartimento della Donnadel Bambino e di Chirurgia Generale e Specialistica, Second University of Naples, via De Crecchio 4, Naples, ItalyIstituto Giannina GasliniUniversity of Genova, 16147 Genova, ItalyDepartment of BiochemistryBiophysics, and General Pathology, Second University of Naples, via De Crecchio 7, Naples, ItalyIstituto Giannina GasliniLargo Gerolamo Gaslini 5, 16147 Genova, ItalyUnit of Endocrinology and DiabetologyBambino Gesù Children's Hospital, IRCCS, Rome, ItalyPediatric Endocrinology UnitDepartment of Translational Medical Sciences, University 'Federico II' of Naples, Naples, ItalyDivision of Internal MedicineSecond University of Naples, 80100 Naples, Italy
| | - Adriana Borriello
- Dipartimento della Donnadel Bambino e di Chirurgia Generale e Specialistica, Second University of Naples, via De Crecchio 4, Naples, ItalyIstituto Giannina GasliniUniversity of Genova, 16147 Genova, ItalyDepartment of BiochemistryBiophysics, and General Pathology, Second University of Naples, via De Crecchio 7, Naples, ItalyIstituto Giannina GasliniLargo Gerolamo Gaslini 5, 16147 Genova, ItalyUnit of Endocrinology and DiabetologyBambino Gesù Children's Hospital, IRCCS, Rome, ItalyPediatric Endocrinology UnitDepartment of Translational Medical Sciences, University 'Federico II' of Naples, Naples, ItalyDivision of Internal MedicineSecond University of Naples, 80100 Naples, Italy
| | - Anna Elsa Maria Allegri
- Dipartimento della Donnadel Bambino e di Chirurgia Generale e Specialistica, Second University of Naples, via De Crecchio 4, Naples, ItalyIstituto Giannina GasliniUniversity of Genova, 16147 Genova, ItalyDepartment of BiochemistryBiophysics, and General Pathology, Second University of Naples, via De Crecchio 7, Naples, ItalyIstituto Giannina GasliniLargo Gerolamo Gaslini 5, 16147 Genova, ItalyUnit of Endocrinology and DiabetologyBambino Gesù Children's Hospital, IRCCS, Rome, ItalyPediatric Endocrinology UnitDepartment of Translational Medical Sciences, University 'Federico II' of Naples, Naples, ItalyDivision of Internal MedicineSecond University of Naples, 80100 Naples, Italy
| | - Marcella Ferraro
- Dipartimento della Donnadel Bambino e di Chirurgia Generale e Specialistica, Second University of Naples, via De Crecchio 4, Naples, ItalyIstituto Giannina GasliniUniversity of Genova, 16147 Genova, ItalyDepartment of BiochemistryBiophysics, and General Pathology, Second University of Naples, via De Crecchio 7, Naples, ItalyIstituto Giannina GasliniLargo Gerolamo Gaslini 5, 16147 Genova, ItalyUnit of Endocrinology and DiabetologyBambino Gesù Children's Hospital, IRCCS, Rome, ItalyPediatric Endocrinology UnitDepartment of Translational Medical Sciences, University 'Federico II' of Naples, Naples, ItalyDivision of Internal MedicineSecond University of Naples, 80100 Naples, Italy
| | - Claudia Santoro
- Dipartimento della Donnadel Bambino e di Chirurgia Generale e Specialistica, Second University of Naples, via De Crecchio 4, Naples, ItalyIstituto Giannina GasliniUniversity of Genova, 16147 Genova, ItalyDepartment of BiochemistryBiophysics, and General Pathology, Second University of Naples, via De Crecchio 7, Naples, ItalyIstituto Giannina GasliniLargo Gerolamo Gaslini 5, 16147 Genova, ItalyUnit of Endocrinology and DiabetologyBambino Gesù Children's Hospital, IRCCS, Rome, ItalyPediatric Endocrinology UnitDepartment of Translational Medical Sciences, University 'Federico II' of Naples, Naples, ItalyDivision of Internal MedicineSecond University of Naples, 80100 Naples, Italy
| | - Flavia Napoli
- Dipartimento della Donnadel Bambino e di Chirurgia Generale e Specialistica, Second University of Naples, via De Crecchio 4, Naples, ItalyIstituto Giannina GasliniUniversity of Genova, 16147 Genova, ItalyDepartment of BiochemistryBiophysics, and General Pathology, Second University of Naples, via De Crecchio 7, Naples, ItalyIstituto Giannina GasliniLargo Gerolamo Gaslini 5, 16147 Genova, ItalyUnit of Endocrinology and DiabetologyBambino Gesù Children's Hospital, IRCCS, Rome, ItalyPediatric Endocrinology UnitDepartment of Translational Medical Sciences, University 'Federico II' of Naples, Naples, ItalyDivision of Internal MedicineSecond University of Naples, 80100 Naples, Italy
| | - Annalisa Calcagno
- Dipartimento della Donnadel Bambino e di Chirurgia Generale e Specialistica, Second University of Naples, via De Crecchio 4, Naples, ItalyIstituto Giannina GasliniUniversity of Genova, 16147 Genova, ItalyDepartment of BiochemistryBiophysics, and General Pathology, Second University of Naples, via De Crecchio 7, Naples, ItalyIstituto Giannina GasliniLargo Gerolamo Gaslini 5, 16147 Genova, ItalyUnit of Endocrinology and DiabetologyBambino Gesù Children's Hospital, IRCCS, Rome, ItalyPediatric Endocrinology UnitDepartment of Translational Medical Sciences, University 'Federico II' of Naples, Naples, ItalyDivision of Internal MedicineSecond University of Naples, 80100 Naples, Italy
| | - Marta Giaccardi
- Dipartimento della Donnadel Bambino e di Chirurgia Generale e Specialistica, Second University of Naples, via De Crecchio 4, Naples, ItalyIstituto Giannina GasliniUniversity of Genova, 16147 Genova, ItalyDepartment of BiochemistryBiophysics, and General Pathology, Second University of Naples, via De Crecchio 7, Naples, ItalyIstituto Giannina GasliniLargo Gerolamo Gaslini 5, 16147 Genova, ItalyUnit of Endocrinology and DiabetologyBambino Gesù Children's Hospital, IRCCS, Rome, ItalyPediatric Endocrinology UnitDepartment of Translational Medical Sciences, University 'Federico II' of Naples, Naples, ItalyDivision of Internal MedicineSecond University of Naples, 80100 Naples, Italy
| | - Marco Cappa
- Dipartimento della Donnadel Bambino e di Chirurgia Generale e Specialistica, Second University of Naples, via De Crecchio 4, Naples, ItalyIstituto Giannina GasliniUniversity of Genova, 16147 Genova, ItalyDepartment of BiochemistryBiophysics, and General Pathology, Second University of Naples, via De Crecchio 7, Naples, ItalyIstituto Giannina GasliniLargo Gerolamo Gaslini 5, 16147 Genova, ItalyUnit of Endocrinology and DiabetologyBambino Gesù Children's Hospital, IRCCS, Rome, ItalyPediatric Endocrinology UnitDepartment of Translational Medical Sciences, University 'Federico II' of Naples, Naples, ItalyDivision of Internal MedicineSecond University of Naples, 80100 Naples, Italy
| | - Maria Carolina Salerno
- Dipartimento della Donnadel Bambino e di Chirurgia Generale e Specialistica, Second University of Naples, via De Crecchio 4, Naples, ItalyIstituto Giannina GasliniUniversity of Genova, 16147 Genova, ItalyDepartment of BiochemistryBiophysics, and General Pathology, Second University of Naples, via De Crecchio 7, Naples, ItalyIstituto Giannina GasliniLargo Gerolamo Gaslini 5, 16147 Genova, ItalyUnit of Endocrinology and DiabetologyBambino Gesù Children's Hospital, IRCCS, Rome, ItalyPediatric Endocrinology UnitDepartment of Translational Medical Sciences, University 'Federico II' of Naples, Naples, ItalyDivision of Internal MedicineSecond University of Naples, 80100 Naples, Italy
| | - Domenico Cozzolino
- Dipartimento della Donnadel Bambino e di Chirurgia Generale e Specialistica, Second University of Naples, via De Crecchio 4, Naples, ItalyIstituto Giannina GasliniUniversity of Genova, 16147 Genova, ItalyDepartment of BiochemistryBiophysics, and General Pathology, Second University of Naples, via De Crecchio 7, Naples, ItalyIstituto Giannina GasliniLargo Gerolamo Gaslini 5, 16147 Genova, ItalyUnit of Endocrinology and DiabetologyBambino Gesù Children's Hospital, IRCCS, Rome, ItalyPediatric Endocrinology UnitDepartment of Translational Medical Sciences, University 'Federico II' of Naples, Naples, ItalyDivision of Internal MedicineSecond University of Naples, 80100 Naples, Italy
| | - Mohamad Maghnie
- Dipartimento della Donnadel Bambino e di Chirurgia Generale e Specialistica, Second University of Naples, via De Crecchio 4, Naples, ItalyIstituto Giannina GasliniUniversity of Genova, 16147 Genova, ItalyDepartment of BiochemistryBiophysics, and General Pathology, Second University of Naples, via De Crecchio 7, Naples, ItalyIstituto Giannina GasliniLargo Gerolamo Gaslini 5, 16147 Genova, ItalyUnit of Endocrinology and DiabetologyBambino Gesù Children's Hospital, IRCCS, Rome, ItalyPediatric Endocrinology UnitDepartment of Translational Medical Sciences, University 'Federico II' of Naples, Naples, ItalyDivision of Internal MedicineSecond University of Naples, 80100 Naples, Italy
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25
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Chaussenot A, Rouzier C, Quere M, Plutino M, Ait-El-Mkadem S, Bannwarth S, Barth M, Dollfus H, Charles P, Nicolino M, Chabrol B, Vialettes B, Paquis-Flucklinger V. Mutation update and uncommon phenotypes in a French cohort of 96 patients with WFS1-related disorders. Clin Genet 2014; 87:430-9. [PMID: 24890733 DOI: 10.1111/cge.12437] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 05/09/2014] [Accepted: 05/26/2014] [Indexed: 11/29/2022]
Abstract
WFS1 mutations are responsible for Wolfram syndrome (WS) characterized by juvenile-onset diabetes mellitus and optic atrophy, and for low-frequency sensorineural hearing loss (LFSNHL). Our aim was to analyze the French cohort of 96 patients with WFS1-related disorders in order (i) to update clinical and molecular data with 37 novel affected individuals, (ii) to describe uncommon phenotypes and, (iii) to precise the frequency of large-scale rearrangements in WFS1. We performed quantitative polymerase chain reaction (PCR) in 13 patients, carrying only one heterozygous variant, to identify large-scale rearrangements in WFS1. Among the 37 novel patients, 15 carried 15 novel deleterious putative mutations, including one large deletion of 17,444 base pairs. The analysis of the cohort revealed unexpected phenotypes including (i) late-onset symptoms in 13.8% of patients with a probable autosomal recessive transmission; (ii) two siblings with recessive optic atrophy without diabetes mellitus and, (iii) six patients from four families with dominantly-inherited deafness and optic atrophy. We highlight the expanding spectrum of WFS1-related disorders and we show that, even if large deletions are rare events, they have to be searched in patients with classical WS carrying only one WFS1 mutation after sequencing.
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Affiliation(s)
- A Chaussenot
- Department of Medical Genetics, National Centre for Mitochondrial Diseases, Nice Teaching Hospital, Nice, France; IRCAN UMR CNRS 7284/INSERM U1081/UNS, School of Medicine, Nice Sophia-Antipolis University, Nice, France
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26
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Bonnycastle LL, Chines PS, Hara T, Huyghe JR, Swift AJ, Heikinheimo P, Mahadevan J, Peltonen S, Huopio H, Nuutila P, Narisu N, Goldfeder RL, Stitzel ML, Lu S, Boehnke M, Urano F, Collins FS, Laakso M. Autosomal dominant diabetes arising from a Wolfram syndrome 1 mutation. Diabetes 2013; 62:3943-50. [PMID: 23903355 PMCID: PMC3806620 DOI: 10.2337/db13-0571] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
We used an unbiased genome-wide approach to identify exonic variants segregating with diabetes in a multigenerational Finnish family. At least eight members of this family presented with diabetes with age of diagnosis ranging from 18 to 51 years and a pattern suggesting autosomal dominant inheritance. We sequenced the exomes of four affected members of this family and performed follow-up genotyping of additional affected and unaffected family members. We uncovered a novel nonsynonymous variant (p.Trp314Arg) in the Wolfram syndrome 1 (WFS1) gene that segregates completely with the diabetic phenotype. Multipoint parametric linkage analysis with 13 members of this family identified a single linkage signal with maximum logarithm of odds score 3.01 at 4p16.2-p16.1, corresponding to a region harboring the WFS1 locus. Functional studies demonstrate a role for this variant in endoplasmic reticulum stress, which is consistent with the β-cell failure phenotype seen in mutation carriers. This represents the first compelling report of a mutation in WFS1 associated with dominantly inherited nonsyndromic adult-onset diabetes.
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Affiliation(s)
| | - Peter S. Chines
- National Human Genome Research Institute, Bethesda, Maryland
| | - Takashi Hara
- Department of Medicine and Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri
| | - Jeroen R. Huyghe
- Department of Biostatistics and Center for Statistical Genetics, School of Public Health, University of Michigan, Ann Arbor, Michigan
| | - Amy J. Swift
- National Human Genome Research Institute, Bethesda, Maryland
| | - Pirkko Heikinheimo
- Department of Biochemistry and Food Chemistry, University of Turku, Turku, Finland
| | - Jana Mahadevan
- Department of Medicine and Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri
| | - Sirkku Peltonen
- Department of Dermatology, University of Turku, Turku, Finland
| | - Hanna Huopio
- Department of Paediatrics, Kuopio University Hospital, Kuopio, Finland
| | - Pirjo Nuutila
- Department of Medicine and Turku PET Centre, University of Turku, Turku, Finland
- Department of Medicine and Turku PET Centre, Turku University Hospital, Turku, Finland
| | - Narisu Narisu
- National Human Genome Research Institute, Bethesda, Maryland
| | | | | | - Simin Lu
- Department of Medicine and Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri
| | - Michael Boehnke
- Department of Biostatistics and Center for Statistical Genetics, School of Public Health, University of Michigan, Ann Arbor, Michigan
| | - Fumihiko Urano
- Department of Medicine and Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri
| | - Francis S. Collins
- National Human Genome Research Institute, Bethesda, Maryland
- Corresponding author: Francis S. Collins,
| | - Markku Laakso
- Department of Medicine, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland
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Grau T, Burbulla LF, Engl G, Delettre C, Delprat B, Oexle K, Leo-Kottler B, Roscioli T, Krüger R, Rapaport D, Wissinger B, Schimpf-Linzenbold S. A novel heterozygousOPA3mutation located in the mitochondrial target sequence results in altered steady-state levels and fragmented mitochondrial network. J Med Genet 2013; 50:848-58. [DOI: 10.1136/jmedgenet-2013-101774] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Cabanillas Farpón R, Cadiñanos Bañales J. Hereditary Hearing Loss: Genetic Counselling. ACTA OTORRINOLARINGOLOGICA ESPANOLA 2012. [DOI: 10.1016/j.otoeng.2011.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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29
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Yuca SA, Rendtorff ND, Boulahbel H, Lodahl M, Tranebjærg L, Cesur Y, Dogan M, Yilmaz C, Akgun C, Acikgoz M. Rapidly progressive renal disease as part of Wolfram syndrome in a large inbred Turkish family due to a novel WFS1 mutation (p.Leu511Pro). Eur J Med Genet 2012; 55:37-42. [DOI: 10.1016/j.ejmg.2011.08.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Accepted: 08/27/2011] [Indexed: 10/17/2022]
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Brownstein Z, Friedman LM, Shahin H, Oron-Karni V, Kol N, Abu Rayyan A, Parzefall T, Lev D, Shalev S, Frydman M, Davidov B, Shohat M, Rahile M, Lieberman S, Levy-Lahad E, Lee MK, Shomron N, King MC, Walsh T, Kanaan M, Avraham KB. Targeted genomic capture and massively parallel sequencing to identify genes for hereditary hearing loss in Middle Eastern families. Genome Biol 2011; 12:R89. [PMID: 21917145 PMCID: PMC3308052 DOI: 10.1186/gb-2011-12-9-r89] [Citation(s) in RCA: 166] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Revised: 08/08/2011] [Accepted: 09/14/2011] [Indexed: 01/29/2023] Open
Abstract
Background Identification of genes responsible for medically important traits is a major challenge in human genetics. Due to the genetic heterogeneity of hearing loss, targeted DNA capture and massively parallel sequencing are ideal tools to address this challenge. Our subjects for genome analysis are Israeli Jewish and Palestinian Arab families with hearing loss that varies in mode of inheritance and severity. Results A custom 1.46 MB design of cRNA oligonucleotides was constructed containing 246 genes responsible for either human or mouse deafness. Paired-end libraries were prepared from 11 probands and bar-coded multiplexed samples were sequenced to high depth of coverage. Rare single base pair and indel variants were identified by filtering sequence reads against polymorphisms in dbSNP132 and the 1000 Genomes Project. We identified deleterious mutations in CDH23, MYO15A, TECTA, TMC1, and WFS1. Critical mutations of the probands co-segregated with hearing loss. Screening of additional families in a relevant population was performed. TMC1 p.S647P proved to be a founder allele, contributing to 34% of genetic hearing loss in the Moroccan Jewish population. Conclusions Critical mutations were identified in 6 of the 11 original probands and their families, leading to the identification of causative alleles in 20 additional probands and their families. The integration of genomic analysis into early clinical diagnosis of hearing loss will enable prediction of related phenotypes and enhance rehabilitation. Characterization of the proteins encoded by these genes will enable an understanding of the biological mechanisms involved in hearing loss.
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Affiliation(s)
- Zippora Brownstein
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
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31
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Rendtorff ND, Lodahl M, Boulahbel H, Johansen IR, Pandya A, Welch KO, Norris VW, Arnos KS, Bitner-Glindzicz M, Emery SB, Mets MB, Fagerheim T, Eriksson K, Hansen L, Bruhn H, Möller C, Lindholm S, Ensgaard S, Lesperance MM, Tranebjaerg L. Identification of p.A684V missense mutation in the WFS1 gene as a frequent cause of autosomal dominant optic atrophy and hearing impairment. Am J Med Genet A 2011; 155A:1298-313. [PMID: 21538838 DOI: 10.1002/ajmg.a.33970] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2010] [Accepted: 02/02/2011] [Indexed: 11/08/2022]
Abstract
Optic atrophy (OA) and sensorineural hearing loss (SNHL) are key abnormalities in several syndromes, including the recessively inherited Wolfram syndrome, caused by mutations in WFS1. In contrast, the association of autosomal dominant OA and SNHL without other phenotypic abnormalities is rare, and almost exclusively attributed to mutations in the Optic Atrophy-1 gene (OPA1), most commonly the p.R445H mutation. We present eight probands and their families from the US, Sweden, and UK with OA and SNHL, whom we analyzed for mutations in OPA1 and WFS1. Among these families, we found three heterozygous missense mutations in WFS1 segregating with OA and SNHL: p.A684V (six families), and two novel mutations, p.G780S and p.D797Y, all involving evolutionarily conserved amino acids and absent from 298 control chromosomes. Importantly, none of these families harbored the OPA1 p.R445H mutation. No mitochondrial DNA deletions were detected in muscle from one p.A684V patient analyzed. Finally, wolframin p.A684V mutant ectopically expressed in HEK cells showed reduced protein levels compared to wild-type wolframin, strongly indicating that the mutation is disease-causing. Our data support OA and SNHL as a phenotype caused by dominant mutations in WFS1 in these additional eight families. Importantly, our data provide the first evidence that a single, recurrent mutation in WFS1, p.A684V, may be a common cause of ADOA and SNHL, similar to the role played by the p.R445H mutation in OPA1. Our findings suggest that patients who are heterozygous for WFS1 missense mutations should be carefully clinically examined for OA and other manifestations of Wolfram syndrome.
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Affiliation(s)
- Nanna D Rendtorff
- Wilhelm Johannsen Centre for Functional Genome Research, Department of Cellular and Molecular Medicine, The Panum Institute, University of Copenhagen, Denmark
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32
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[Hereditary hearing loss: genetic counselling]. ACTA OTORRINOLARINGOLOGICA ESPANOLA 2011; 63:218-29. [PMID: 21514544 DOI: 10.1016/j.otorri.2011.02.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2011] [Accepted: 02/20/2011] [Indexed: 11/22/2022]
Abstract
The aim of this review is to provide an updated overview of hereditary hearing loss, with special attention to the etiological diagnosis of sensorineural hearing loss, the genes most frequently mutated in our environment, the techniques available for their analysis and the clinical implications of genetic diagnosis. More than 60% of childhood sensorineural hearing loss is genetic. In adults, the percentage of hereditary hearing loss is unknown. Genetic testing is the highest yielding test for evaluating patients with sensorineural hearing loss. The process of genetic counselling is intended to inform patients and their families of the medical, psychological and familial implications of genetic diseases, as well as the risks, benefits and limitations of genetic testing. The implementation of any genetic analysis must be always preceded by an appropriate genetic counselling process.
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Chaussenot A, Bannwarth S, Rouzier C, Vialettes B, Mkadem SAE, Chabrol B, Cano A, Labauge P, Paquis-Flucklinger V. Neurologic features and genotype-phenotype correlation in Wolfram syndrome. Ann Neurol 2010; 69:501-8. [DOI: 10.1002/ana.22160] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Revised: 07/11/2010] [Accepted: 07/12/2010] [Indexed: 11/09/2022]
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Abstract
Wolfram syndrome (WS) (MIM 222300) is a rare multisystem neurodegenerative disorder of autosomal recessive inheritance, also known as DIDMOAD (diabetes insipidus, insulin-deficient diabetes mellitus, optic atrophy and deafness). A Wolfram gene (WFS1) has been mapped to chromosome 4p16.1 which encodes an endoplasmic reticulum (ER) membrane-embedded protein. ER localization suggests that WFS1 protein has physiological functions in membrane trafficking, secretion, processing and/or regulation of ER calcium omeostasis. Disturbances or overloading of these functions induce ER stress responses, including apoptosis. Most WS patients carry mutations in this gene, but some studies provided evidence for genetic heterogeneity, and the genotype-phenotype relationships are not clear. Here we review the data regarding the mechanisms and the mutations of WFS1 gene that relate to WS.
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Affiliation(s)
- L Rigoli
- Department of Pediatrics, University Hospital, Messina, Italy.
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Javed F, Romanos GE. Impact of Diabetes Mellitus and Glycemic Control on the Osseointegration of Dental Implants: A Systematic Literature Review. J Periodontol 2009; 80:1719-30. [DOI: 10.1902/jop.2009.090283] [Citation(s) in RCA: 215] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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