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Vona B, Schwartzbaum DA, Rodriguez AA, Lewis SS, Toosi MB, Radhakrishnan P, Bozan N, Akın R, Doosti M, Manju R, Duman D, Sineni CJ, Nampoothiri S, Karimiani EG, Houlden H, Bademci G, Tekin M, Girisha KM, Maroofian R, Douzgou S. Biallelic KITLG variants lead to a distinct spectrum of hypomelanosis and sensorineural hearing loss. J Eur Acad Dermatol Venereol 2022; 36:1606-1611. [PMID: 35543077 PMCID: PMC9546089 DOI: 10.1111/jdv.18207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 04/21/2022] [Indexed: 11/30/2022]
Abstract
Background Pathogenic variants in KITLG, a crucial protein involved in pigmentation and neural crest cell migration, cause non‐syndromic hearing loss, Waardenburg syndrome type 2, familial progressive hyperpigmentation and familial progressive hyper‐ and hypopigmentation, all of which are inherited in an autosomal dominant manner. Objectives To describe the genotypic and clinical spectrum of biallelic KITLG‐variants. Methods We used a genotype‐first approach through the GeneMatcher data sharing platform to collect individuals with biallelic KITLG variants and reviewed the literature for overlapping reports. Results We describe the first case series with biallelic KITLG variants; we expand the known hypomelanosis spectrum to include a ‘sock‐and‐glove‐like’, symmetric distribution, progressive repigmentation and generalized hypomelanosis. We speculate that KITLG biallelic loss‐of‐function variants cause generalized hypomelanosis, whilst variants with residual function lead to a variable auditory‐pigmentary disorder mostly reminiscent of Waardenburg syndrome type 2 or piebaldism. Conclusions We provide consolidating evidence that biallelic KITLG variants cause a distinct auditory‐pigmentary disorder. We evidence a significant clinical variability, similar to the one previously observed in KIT‐related piebaldism.
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Affiliation(s)
- B Vona
- Institute of Human Genetics, University Medical Center Göttingen, Göttingen, Germany.,Institute for Auditory Neuroscience and InnerEarLab, University Medical Center Göttingen, Göttingen, Germany
| | - D A Schwartzbaum
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - A A Rodriguez
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - S S Lewis
- Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - M B Toosi
- Department of Pediatrics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - P Radhakrishnan
- Suma Genomics Private Limited and Manipal Center for Biotherapeutics Research, Manipal Academy of Higher Education, Manipal, India
| | - N Bozan
- Department of Otolaryngology, Yuzuncu Yıl University Faculty of Medicine, Van, Turkey
| | - R Akın
- Department of Otolaryngology, Yuzuncu Yıl University Faculty of Medicine, Van, Turkey
| | - M Doosti
- Department of Medical Genetics, Next Generation Genetic Polyclinic, Mashhad, Iran
| | - R Manju
- Renai Medicity, Cochin, Kerala, India
| | - D Duman
- Department of Audiology, Ankara University Faculty of Health Sciences, Ankara, Turkey
| | - C J Sineni
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - S Nampoothiri
- Department of Paediatric Genetics, Amrita Institute of Medical Sciences and Research Centre, Kochi, India
| | - E G Karimiani
- Department of Medical Genetics, Next Generation Genetic Polyclinic, Mashhad, Iran.,Molecular and Clinical Sciences Institute, St. George's, University of London, Cranmer Terrace, London, SW17 0RE, UK.,Innovative medical research center, Mashhad branch, Islamic Azad University, Mashhad, Iran
| | - H Houlden
- Department of Neuromuscular Disorders, UCL Queen Square Institute of Neurology, London, UK
| | - G Bademci
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, Florida, USA.,Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - M Tekin
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, Florida, USA.,Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - K M Girisha
- Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India.,Suma Genomics Private Limited and Manipal Center for Biotherapeutics Research, Manipal Academy of Higher Education, Manipal, India
| | - R Maroofian
- Department of Neuromuscular Disorders, UCL Queen Square Institute of Neurology, London, UK
| | - S Douzgou
- Department of Medical Genetics, Haukeland University Hospital, Bergen, Norway.,Division of Evolution, Infection and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PL, UK
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Cikes M, Tong L, Jasaityte R, Hamilton J, Sutherland G, D'hooge J, Yurdakul S, Oner F, Avci BK, Sahin S, Direskeneli H, Aytekin S, Fang F, Chan A, Zhang Q, Sanderson J, Kwong J, Yu C, Zaidi A, Raju H, Ghani S, Gati S, Cox A, Sheikh N, Sharma R, Sharma S, Kutty S, Kottam A, Padiyath A, Gao S, Drvol L, Lof J, Li L, Rangamani S, Danford D, Kuehne T, Rosner A, Avenarius D, Malm S, Iqbal A, Baltabaeva A, Schirmer H, Bijnens B, Myrmel T, Magalhaes A, Silva Marques J, Martins S, Carrilho Ferreira P, Jorge C, Silva D, Placido R, Goncalves S, Almeida A, Nunes Diogo A, Poulidakis E, Aggeli C, Sideris S, Dilaveris P, Gatzoulis K, Felekos I, Koutagiar I, Sfendouraki E, Roussakis G, Stefanadis C, Zhang Q, Sun J, Gao R, Feng Y, Liu X, Sheng W, Liu F, Yu C, Hallioglu O, Citirik D, Buyukakilli B, Ozeren M, Gurgul S, Tasdelen B, Rodriguez Lopez A, Rodriguez Lopez A, Garcia Cuenllas L, Garcia Cuenllas L, Medrano C, Medrano C, Granja S, Granja S, Marin C, Marin C, Maroto E, Maroto E, Alvarez T, Alvarez 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Ananthasubramaniam K, Alam M, Chattahi J, Zweig B, Boedeker S, Song T, Khoo J, Davies J, Ang KL, Galinanes M, Chin D, Papamichael ND, Karassavidou D, Mpougialkli M, Antoniou S, Giannitsi S, Chachalos S, Gouva C, Naka K, Katopodis K, Michalis L, Tsang W, Cui V, Ionasec R, Takeuchi M, Houle H, Weinert L, Roberson D, Lang R, Altman M, Aussoleil A, Bergerot C, Sibellas F, Bonnefoy-Cudraz E, Derumeaux GA, Thibault H, Mohamed A, Omran A, Hussein M, Shahgaldi K, Gunyeli E, Sahlen A, Manouras A, Winter R, Squeri A, Binno S, Ferdenzi E, Reverberi C, Baldelli M, Barbieri A, Iaccarino D, Naldi M, Bosi S, Kalinowski M, Szulik M, Streb W, Stabryla J, Nowak J, Rybus-Kalinowska B, Kukulski T, Kalarus Z, Ouss A, Riezebos R, Nestaas E, Skranes J, Stoylen A, Brunvand L, Fugelseth D, Magalhaes A, Silva Marques J, Martins S, Carrilho Ferreira P, Placido R, Jorge C, Silva D, Goncalves S, Almeida A, Nunes Diogo A, Nagy A, Kovats T, Apor A, Nagy A, Vago H, Toth A, Toth M, Merkely B, Ranjbar S, Karvandi M, 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R, Ruddy T, Chow B, Lipiec P, Szymczyk E, Michalski B, Wozniakowski B, Rotkiewicz A, Stefanczyk L, Szymczyk K, Kasprzak J, Angelov A, Yotov Y, Mircheva L, Kisheva A, Kunchev O, Ikonomidis I, Tsantes A, Triantafyllidi H, Tzortzis S, Dima K, Trivilou P, Papadopoulos C, Travlou A, Anastasiou-Nana M, Lekakis J, Bader R, Agoston-Coldea L, Lupu S, Mocan T, Loegstrup B, Hofsten D, Christophersen T, Moller J, Bjerre M, Flyvbjerg A, Botker H, Egstrup K, Park Y, Choi J, Yun K, Lee S, Han D, Kim J, Kim J, Kim J, Chun K. Poster Session Wednesday 5 December all day Display * Determinants of left ventricular performance. Eur Heart J Cardiovasc Imaging 2012. [DOI: 10.1093/ehjci/jes248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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