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Malhi K, Mustari A, Singh S, Kumar A, Vignesh P, De D, Handa S, Mahajan R. A photo-distributed rash and eczematous eruptions in two siblings-A diagnostic conundrum. Australas J Dermatol 2024; 65:402-405. [PMID: 38646889 DOI: 10.1111/ajd.14295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 04/07/2024] [Accepted: 04/09/2024] [Indexed: 04/23/2024]
Affiliation(s)
- Kittu Malhi
- Department of Dermatology, Venereology and Leprology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Akash Mustari
- Department of Dermatology, Venereology and Leprology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Sukhdeep Singh
- Department of Dermatology, Venereology and Leprology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Anoop Kumar
- Department of Dermatology, Venereology and Leprology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Pandiarajan Vignesh
- Department of Paediatrics, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Dipankar De
- Department of Dermatology, Venereology and Leprology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Sanjeev Handa
- Department of Dermatology, Venereology and Leprology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Rahul Mahajan
- Department of Dermatology, Venereology and Leprology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
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2
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Yan C, Zhou T, Geng S. Chinese nontwin sisters suffer from poikiloderma with neutropenia harboring novel compound heterozygous USB1 gene mutations. J Dermatol 2023; 50:e278-e279. [PMID: 36938655 DOI: 10.1111/1346-8138.16782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/10/2023] [Accepted: 03/03/2023] [Indexed: 03/21/2023]
Affiliation(s)
- Cong Yan
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Tong Zhou
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Songmei Geng
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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Hoeger PH, Koehler LM, Reipschlaeger M, Mercier S. Hereditary fibrosing poikiloderma (POIKTMP syndrome) report of a new mutation and review of the literature. Pediatr Dermatol 2023; 40:182-187. [PMID: 36102338 DOI: 10.1111/pde.15133] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 08/23/2022] [Indexed: 01/25/2023]
Abstract
Hereditary fibrosing poikiloderma with tendon contractures, myopathy, and pulmonary fibrosis (POIKTMP) is a genodermatosis with autosomal dominant inheritance caused by mutations in FAM111B. We report another case with a new pathogenic variant and analyze all previously published 34 cases with a focus on sequence of clinical presentation and genotype-phenotype correlation. POIKTMP is characterized by marked age-dependent clinical expressivity. FAM111B encodes a catalytic nuclear protein, expressed in many tissues, which contributes to impaired DNA repair affecting multiple systems. Specific inhibition of catalytic activity might be a future strategy to halt progression of this otherwise untreatable disease. Given the relentless progression of the disease, it would make sense to start such treatment as early as possible. In order to achieve this objective, children with suspected POIKTMP should therefore undergo early imaging of all relevant organ systems.
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Affiliation(s)
- Peter H Hoeger
- Department of Pediatrics, Catholic Children's Hospital Wilhelmstift, Hamburg, Germany.,Department of Pediatric Dermatology, Catholic Children's Hospital Wilhelmstift, Hamburg, Germany
| | - Lisa M Koehler
- Department of Pediatrics, Catholic Children's Hospital Wilhelmstift, Hamburg, Germany.,Department of Pediatric Dermatology, Catholic Children's Hospital Wilhelmstift, Hamburg, Germany
| | - Maria Reipschlaeger
- Department of Pediatrics, Catholic Children's Hospital Wilhelmstift, Hamburg, Germany
| | - Sandra Mercier
- CHU Nantes, Service de génétique médicale, Centre de Référence des Maladies Neuromusculaires AOC, Filnemus, Euro-NMD, Nantes, France.,Nantes Université, CNRS, INSERM, l'Institut du Thorax, Nantes, France
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4
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Wu Y, Wen L, Wang P, Wang X, Zhang G. Case Report: Diverse phenotypes of congenital poikiloderma associated with FAM111B mutations in codon 628: A case report and literature review. Front Genet 2022; 13:926451. [PMID: 36092869 PMCID: PMC9452834 DOI: 10.3389/fgene.2022.926451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 07/12/2022] [Indexed: 12/03/2022] Open
Abstract
Congenital poikiloderma is an extremely rare autosomal dominant genetic syndrome, characterized by a combination of early onset poikiloderma, telangiectasia, and epidermal atrophy. FAM111B gene with multiple mutations has been identified as a potential causative gene for congenital poikiloderma. In this report, we described a boy with congenital poikiloderma confirmed by clinical manifestations. Next-generation sequencing based on a gene probe panel consisting of 541 genetic loci of genodermatoses, was used to screen mutations of the proband and his parents. Results showed that a missense mutation in the FAM111B gene c.1883G>A (rs587777238) was identified in the proband, but absent in his parents, indicating the mutation is de novo. In conclusion, a new case of congenital poikiloderma in China was reported, and the hotspot mutations in codon 628 of FAM111B gene was reviewed, as well as authenticating the uncertain association between genotypes and phenotypes in this rare disease.
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Affiliation(s)
| | | | | | - Xiuli Wang
- *Correspondence: Guolong Zhang, ; Xiuli Wang,
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5
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Han JH, Ryan G, Guy A, Liu L, Quinodoz M, Helbling I, Lai-Cheong JE, Barwell J, Folcher M, McGrath JA, Moss C, Rivolta C. Mutations in the ribosome biogenesis factor gene LTV1 are linked to LIPHAK syndrome, a novel poikiloderma-like disorder. Hum Mol Genet 2022; 31:1970-1978. [PMID: 34999892 PMCID: PMC9239743 DOI: 10.1093/hmg/ddab368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 11/18/2021] [Accepted: 12/13/2021] [Indexed: 11/12/2022] Open
Abstract
In the framework of the UK 100 000 Genomes Project, we investigated the genetic origin of a previously undescribed recessive dermatological condition, which we named LIPHAK (LTV1-associated Inflammatory Poikiloderma with Hair abnormalities and Acral Keratoses), in four affected individuals from two UK families of Pakistani and Indian origins, respectively. Our analysis showed that only one gene, LTV1, carried rare biallelic variants that were shared in all affected individuals, and specifically they bore the NM_032860.5:c.503A > G, p.(Asn168Ser) change, found homozygously in all of them. In addition, high-resolution homozygosity mapping revealed the presence of a small 652-kb stretch on chromosome 6, encompassing LTV1, that was haploidentical and common to all affected individuals. The c.503A > G variant was predicted by in silico tools to affect the correct splicing of LTV1's exon 5. Minigene-driven splicing assays in HEK293T cells and in a skin sample from one of the patients confirmed that this variant was indeed responsible for the creation of a new donor splice site, resulting in aberrant splicing and in a premature termination codon in exon 6 of this gene. LTV1 encodes one of the ribosome biogenesis factors that promote the assembly of the small (40S) ribosomal subunit. In yeast, defects in LTV1 alter the export of nascent ribosomal subunits to the cytoplasm; however, the role of this gene in human pathology is unknown to date. Our data suggest that LIPHAK could be a previously unrecognized ribosomopathy.
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Affiliation(s)
- Ji Hoon Han
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), 4031 Basel, Switzerland
- Department of Ophthalmology, University of Basel, 4031 Basel, Switzerland
| | - Gavin Ryan
- West Midlands Regional Genetics Laboratory, Central and South Genomic Laboratory Hub, Birmingham B15 2TG, UK
| | - Alyson Guy
- Viapath, St Thomas' Hospital, London SE1 7EH, UK
| | - Lu Liu
- Viapath, St Thomas' Hospital, London SE1 7EH, UK
| | - Mathieu Quinodoz
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), 4031 Basel, Switzerland
- Department of Ophthalmology, University of Basel, 4031 Basel, Switzerland
- Department of Genetics and Genome Biology, University of Leicester, Leicester LE1 7RH, UK
| | - Ingrid Helbling
- Department of Dermatology, University Hospitals of Leicester NHS Trust, Leicester LE1 5WW, UK
| | | | | | - Julian Barwell
- Department of Genetics and Genome Biology, University of Leicester, Leicester LE1 7RH, UK
- Department of Clinical Genetics, University Hospitals of Leicester NHS Trust, Leicester LE1 5WW, UK
| | - Marc Folcher
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), 4031 Basel, Switzerland
- Department of Ophthalmology, University of Basel, 4031 Basel, Switzerland
| | - John A McGrath
- NIHR Biomedical Research Centre, Guy's and St Thomas' NHS Foundation Trust and King's College London, London SE1 9RT, UK
- St John's Institute of Dermatology, King's College London (Guy's campus), London SE1 9RT, UK
| | - Celia Moss
- Department of Paediatric Dermatology, Birmingham Women’s and Children’s Hospital NHS FT, Birmingham B4 6NH, UK
- College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Carlo Rivolta
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), 4031 Basel, Switzerland
- Department of Ophthalmology, University of Basel, 4031 Basel, Switzerland
- Department of Genetics and Genome Biology, University of Leicester, Leicester LE1 7RH, UK
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