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Rumping L, Wessels MW, Postma AV, van Schuppen J, van Slegtenhorst MA, Saris JJ, van Tintelen JP, Robertson SP, Alders M, Maas SM, Deprez RHL. Terminal osseous dysplasia with pigmentary defects and cardiomyopathy caused by a novel FLNA variant. Am J Med Genet A 2021; 185:3814-3820. [PMID: 34254723 PMCID: PMC9292317 DOI: 10.1002/ajmg.a.62417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/29/2021] [Accepted: 06/25/2021] [Indexed: 11/16/2022]
Abstract
Terminal osseous dysplasia with pigmentary defects (TODPD), also known as digitocutaneous dysplasia, is one of the X‐linked filaminopathies caused by a variety of FLNA‐variants. TODPD is characterized by skeletal defects, skin fibromata and dysmorphic facial features. So far, only a single recurrent variant (c.5217G>A;p.Val1724_Thr1739del) in FLNA has found to be responsible for TODPD. We identified a novel c.5217+5G>C variant in FLNA in a female proband with skeletal defects, skin fibromata, interstitial lung disease, epilepsy, and restrictive cardiomyopathy. This variant causes mis‐splicing of exon 31 predicting the production of a FLNA‐protein with an in‐frame‐deletion of 16 residues identical to the miss‐splicing‐effect of the recurrent TODPD c.5217G>A variant. This mis‐spliced transcript was explicitly detected in heart tissue, but was absent from blood, skin, and lung. X‐inactivation analyses showed extreme skewing with almost complete inactivation of the mutated allele (>90%) in these tissues, except for heart. The mother of the proband, who also has fibromata and skeletal abnormalities, is also carrier of the FLNA‐variant and was diagnosed with noncompaction cardiomyopathy after cardiac screening. No other relevant variants in cardiomyopathy‐related genes were found. Here we describe a novel variant in FLNA (c.5217+5G>C) as the second pathogenic variant responsible for TODPD. Cardiomyopathy has not been described as a phenotypic feature of TODPD before.
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Affiliation(s)
- Lynne Rumping
- Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Marja W Wessels
- Department of Clinical Genetics, Erasmus Medical Centre, Rotterdam, The Netherlands
| | - Alex V Postma
- Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.,Department of Medical Biology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Joost van Schuppen
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | | | - Jasper J Saris
- Department of Clinical Genetics, Erasmus Medical Centre, Rotterdam, The Netherlands
| | - J Peter van Tintelen
- Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.,Department of Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Stephen P Robertson
- Department of Women's and Children's Health, University of Otago, Dunedin, New Zealand
| | - Mariëlle Alders
- Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Saskia M Maas
- Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Ronald H Lekanne Deprez
- Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
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Li Z, Xie Y, Xiao Q, Wang L. Terminal osseous dysplasia with pigmentary defects in a Chinese girl with the FLNA mutation: A case report and published work review. J Dermatol 2020; 47:295-299. [PMID: 31919883 DOI: 10.1111/1346-8138.15209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 12/03/2019] [Indexed: 02/05/2023]
Abstract
Terminal osseous dysplasia with pigmentary defects (TODPD) is an extremely rare X-linked dominant syndrome characterized by pigmentary skin defects, cutaneous digital fibromas and skeletal anomalies. Recent studies have identified that TODPD is caused by a unique variant, c.5217G>A (p.Val1724_Thr1739del), in the FLNA gene, which could in turn lead to the elastic fiber abnormality in TODPD. We herein present a rare case of TODPD in a Chinese girl due to an FLNA c.5217G>A heterozygous mutation, but the skin lesion biopsy showed that the elastic fibers were within normal limits in the dermis. A published work review of TODPD with the FLNA mutation from various origins is also included in this paper. To the best of our knowledge, this is the first report on TODPD with the FLNA mutation in China.
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Affiliation(s)
- Zhongtao Li
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - Yao Xie
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - Qiankun Xiao
- Department of Radiology, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology, Chengdu, China
| | - Lin Wang
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
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Newton VL, Riba-Garcia I, Griffiths CEM, Rawlings AV, Voegeli R, Unwin RD, Sherratt MJ, Watson REB. Mass spectrometry-based proteomics reveals the distinct nature of the skin proteomes of photoaged compared to intrinsically aged skin. Int J Cosmet Sci 2019; 41:118-131. [PMID: 30661253 DOI: 10.1111/ics.12513] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 12/15/2018] [Indexed: 12/15/2022]
Abstract
OBJECTIVE With increasing age, skin is subject to alterations in its organization, which impact on its function as well as having clinical consequences. Proteomics is a useful tool for non-targeted, semi-quantitative simultaneous investigation of high numbers of proteins. In the current study, we utilize proteomics to characterize and contrast age-associated differences in photoexposed and photoprotected skin, with a focus on the epidermis, dermal-epidermal junction and papillary dermis. METHODS Skin biopsies from buttock (photoprotected) and forearm (photoexposed) of healthy volunteers (aged 18-30 or ≥65 years) were transversely sectioned from the stratum corneum to a depth of 250 μm. Following SDS-PAGE, each sample lane was segmented prior to analysis by liquid chromatography-mass spectrometry/mass spectrometry. Pathway analysis was carried out using Ingenuity IPA. RESULTS Comparison of skin proteomes at buttock and forearm sites revealed differences in relative protein abundance. Ageing in skin on the photoexposed forearm resulted in 80% of the altered proteins being increased with age, in contrast to the photoprotected buttock where 74% of altered proteins with age were reduced. Functionally, age-altered proteins in the photoexposed forearm were associated with conferring structure, energy and metabolism. In the photoprotected buttock, proteins associated with gene expression, free-radical scavenging, protein synthesis and protein degradation were most frequently altered. CONCLUSION This study highlights the necessity of not considering photoageing as an accelerated intrinsic ageing, but as a distinct physiological process.
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Affiliation(s)
- V L Newton
- Centre for Dermatology Research, Division of Musculoskeletal & Dermatological Sciences, School of Biological Sciences, Manchester Academic Health Science Centre, University of Manchester, and Salford Royal NHS Foundation Trust, Manchester, UK.,NIHR Manchester Biomedical Research Centre, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - I Riba-Garcia
- Division of Cardiovascular Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Core Technology facility (3rd Floor), 46 Grafton Street, Manchester, M13 9NT, UK
| | - C E M Griffiths
- Centre for Dermatology Research, Division of Musculoskeletal & Dermatological Sciences, School of Biological Sciences, Manchester Academic Health Science Centre, University of Manchester, and Salford Royal NHS Foundation Trust, Manchester, UK.,NIHR Manchester Biomedical Research Centre, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | | | - R Voegeli
- DSM Nutritional Products Ltd, Kaiseraugst, Switzerland
| | - R D Unwin
- Division of Cardiovascular Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Core Technology facility (3rd Floor), 46 Grafton Street, Manchester, M13 9NT, UK
| | - M J Sherratt
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - R E B Watson
- Centre for Dermatology Research, Division of Musculoskeletal & Dermatological Sciences, School of Biological Sciences, Manchester Academic Health Science Centre, University of Manchester, and Salford Royal NHS Foundation Trust, Manchester, UK.,NIHR Manchester Biomedical Research Centre, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
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Azakli H, Akkaya AD, Aygün MS, Demirkesen C, Eraslan S, Kayserili H. Terminal osseous dysplasia with pigmentary defects (TODPD) in a Turkish girl with new skin findings. Am J Med Genet A 2018; 179:123-129. [DOI: 10.1002/ajmg.a.60686] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 09/10/2018] [Accepted: 10/10/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Hülya Azakli
- Medical Genetics Department; Koç University School of Medicine (KUSoM); İstanbul Turkey
| | - Ayse Deniz Akkaya
- Department of Dermatology; Koç University School of Medicine (KUSoM); İstanbul Turkey
| | - Murat Serhat Aygün
- Department of Radiology; Koç University School of Medicine (KUSoM); İstanbul Turkey
| | - Cüyan Demirkesen
- Department of Pathology; Acıbadem Mehmet Ali Aydınlar University School of Medicine; İstanbul Turkey
| | - Serpil Eraslan
- Medical Genetics Department; Koç University School of Medicine (KUSoM); İstanbul Turkey
| | - Hülya Kayserili
- Medical Genetics Department; Koç University School of Medicine (KUSoM); İstanbul Turkey
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