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Khan N, Shah K, Fozia F, Khan SA, Muhammad N, Nasir A, Ahmad I, Rehman ZU, Jan A, Muhammad N, Khan S. Biallelic mutations in FLG, TGM1, and STS genes segregated with different types of ichthyoses in eight families of Pakistani origin. Int J Dermatol 2023; 62:672-680. [PMID: 36789964 DOI: 10.1111/ijd.16614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 12/08/2022] [Accepted: 01/20/2023] [Indexed: 02/16/2023]
Abstract
BACKGROUND Congenital ichthyosis is a diverse group of keratinization disorders associated with generalized scaling of skin of varying severity. The non-syndromic forms of congenital ichthyosis are further grouped into common ichthyosis (ichthyosis vulgaris and X-linked ichthyosis), autosomal recessive congenital ichthyosis, and keratopathic ichthyosis. OBJECTIVE To identify sequence variants involved in different forms of hereditary ichthyoses. METHODS We studied eight families with different types of ichthyosis including four families with autosomal recessive congenital ichthyosis and four families with common ichthyosis. Whole exome sequencing and PCR based genotyping was carried out to find out the molecular basis of disease. RESULTS In one family, a novel duplication sequence variant NM_002016.2:c.2767dupT; NP_002007.1:p.Ser923PhefsTer2 was identified in FLG gene; in four families a previously reported nonsense sequence variant NM_000359.3:c.232C>T; NP_002007.1:p.Arg78Ter was identified in TGM1 gene, while, in three families of X-linked recessive ichthyosis, the whole STS gene (NM_001320752.2; NP_001307681.2) regions were deleted. STUDY LIMITATION Gene expression studies have not been performed that would have strengthened the findings of computational analysis. CONCLUSION This study highlights the significance of the c.232C>T variant in the TGM1 gene as a possible founder mutation, complete STS gene deletion as reported previously in Pakistani population, while novel sequence variant in the FLG gene expands the spectrum of variations in this gene. These findings may be used for genetic counseling of the studied families.
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Affiliation(s)
- Niamatullah Khan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science & Technology (KUST), Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Khadim Shah
- Department of Biotechnology, COMSATS University Islamabad, Abbottabad, Pakistan
| | - Fozia Fozia
- Department of Biochemistry, KMU Institute of Medical Sciences (KIMS), Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Sher A Khan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science & Technology (KUST), Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Nazif Muhammad
- Department of Biotechnology and Genetic Engineering, Kohat University of Science & Technology (KUST), Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Abdul Nasir
- Hospital of Zhengzhou University, Zhengzhou, China
| | - Ijaz Ahmad
- Department of Chemistry, Kohat University of Science & Technology (KUST), Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Zia U Rehman
- Department of Biotechnology and Genetic Engineering, Kohat University of Science & Technology (KUST), Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Abid Jan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science & Technology (KUST), Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Noor Muhammad
- Department of Biotechnology and Genetic Engineering, Kohat University of Science & Technology (KUST), Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Saadullah Khan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science & Technology (KUST), Kohat, Khyber Pakhtunkhwa, Pakistan
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Gutiérrez-Cerrajero C, Sprecher E, Paller AS, Akiyama M, Mazereeuw-Hautier J, Hernández-Martín A, González-Sarmiento R. Ichthyosis. Nat Rev Dis Primers 2023; 9:2. [PMID: 36658199 DOI: 10.1038/s41572-022-00412-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/02/2022] [Indexed: 01/20/2023]
Abstract
The ichthyoses are a large, heterogeneous group of skin cornification disorders. They can be inherited or acquired, and result in defective keratinocyte differentiation and abnormal epidermal barrier formation. The resultant skin barrier dysfunction leads to increased transepidermal water loss and inflammation. Disordered cornification is clinically characterized by skin scaling with various degrees of thickening, desquamation (peeling) and erythema (redness). Regardless of the type of ichthyosis, many patients suffer from itching, recurrent infections, sweating impairment (hypohidrosis) with heat intolerance, and diverse ocular, hearing and nutritional complications that should be monitored periodically. The characteristic clinical features are considered to be a homeostatic attempt to repair the skin barrier, but heterogeneous clinical presentation and imperfect phenotype-genotype correlation hinder diagnosis. An accurate molecular diagnosis is, however, crucial for predicting prognosis and providing appropriate genetic counselling. Most ichthyoses severely affect patient quality of life and, in severe forms, may cause considerable disability and even death. So far, treatment provides only symptomatic relief. It is lifelong, expensive, time-consuming, and often provides disappointing results. A better understanding of the molecular mechanisms that underlie these conditions is essential for designing pathogenesis-driven and patient-tailored innovative therapeutic solutions.
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Affiliation(s)
- Carlos Gutiérrez-Cerrajero
- Department of Medicine, Faculty of Medicine, University of Salamanca, Salamanca, Spain.,Biomedical Research Institute of Salamanca (IBSAL), Salamanca, Spain
| | - Eli Sprecher
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Amy S Paller
- Departments of Dermatology and Paediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Masashi Akiyama
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | | | | | - Rogelio González-Sarmiento
- Department of Medicine, Faculty of Medicine, University of Salamanca, Salamanca, Spain.,Biomedical Research Institute of Salamanca (IBSAL), Salamanca, Spain
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3
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Hake L, Süßmuth K, Komlosi K, Kopp J, Drerup C, Metze D, Traupe H, Hausser I, Eckl KM, Hennies HC, Fischer J, Oji V. Quality of life and clinical characteristics of self-improving congenital ichthyosis within the disease spectrum of autosomal recessive congenital ichthyosis. J Eur Acad Dermatol Venereol 2021; 36:582-591. [PMID: 34908195 DOI: 10.1111/jdv.17873] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 11/10/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Autosomal recessive congenital ichthyosis (ARCI) is a heterogeneous group of ichthyoses presenting at birth. Self-improving congenital ichthyosis (SICI) is a subtype of ARCI and is diagnosed when skin condition improves remarkably (within years) after birth. So far, there is sparse data on SICI and quality of life (QoL) in this ARCI subtype. This study aims to further delineate the clinical spectrum of SICI as a rather unique subtype of ARCI. OBJECTIVES This prospective study included 78 patients (median age: 15 years) with ARCI who were subdivided in SICI (n=18) and non-SICI patients (nSICI, n=60) by their ARCI phenotype. METHODS Quality of life (QoL) was assessed using the (Children's) Dermatology Life Quality Index. Statistical analysis was performed with Chi-square- and t-tests. RESULTS The genetically confirmed SICI patients presented causative mutations in the following genes: ALOXE3 (8/16; 50.0%), ALOX12B (6/16; 37.5%), PNPLA1 (1/16; 6.3%) and CYP4F22 (1/16; 6.3%). Hypo-/anhidrosis and insufficient Vitamin D levels (< 30 ng/ml) were often seen in SICI patients. Brachydactyly (a shortening of the 4th and 5th finger) was statistically more frequent in SICI (p=0.023) than nSICI patients. A kink of the ear's helix was seen in half of the SICI patients and tends to occur more frequently in patients with ALOX12B mutations (p=0.005). QoL was less impaired in patients under the age of 16, regardless of ARCI type. CONCLUSIONS SICI is an underestimated, milder clinical variant of ARCI including distinct features such as brachydactyly and kinking of the ears. Clinical experts should be aware of these features when seeing neonates with a collodion membrane. SICI patients should be regularly checked for clinical parameters such as hypo-/anhidrosis or vitamin D levels and monitored for changes in quality of life.
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Affiliation(s)
- L Hake
- Department of Dermatology, Elbe Klinikum Buxtehude, Buxtehude, Germany
| | - K Süßmuth
- Department of Dermatology, University Hospital Münster, Münster, Germany
| | - K Komlosi
- Institute of Human Genetics, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - J Kopp
- Institute of Human Genetics, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - C Drerup
- Department of Dermatology, University Hospital Münster, Münster, Germany
| | - D Metze
- Department of Dermatology, University Hospital Münster, Münster, Germany
| | - H Traupe
- Department of Dermatology, University Hospital Münster, Münster, Germany
| | - I Hausser
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
| | - K M Eckl
- Department of Biological and Geographical Sciences, University of Huddersfield, Huddersfield, United Kingdom.,Division of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria.,Department of Biology, Edge Hill University, Ormskirk, UK
| | - H C Hennies
- Department of Biological and Geographical Sciences, University of Huddersfield, Huddersfield, United Kingdom.,Cologne Center for Genomics, University Hospital Cologne, Cologne, Germany
| | - J Fischer
- Institute of Human Genetics, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - V Oji
- Department of Dermatology, University Hospital Münster, Münster, Germany
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Nohara T, Ohno Y, Kihara A. Impaired production of the skin barrier lipid acylceramide by CYP4F22 ichthyosis mutations. J Dermatol Sci 2020; 101:69-71. [PMID: 33067036 DOI: 10.1016/j.jdermsci.2020.10.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/28/2020] [Accepted: 10/04/2020] [Indexed: 11/15/2022]
Affiliation(s)
- Tomohiro Nohara
- Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Yusuke Ohno
- Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan.
| | - Akio Kihara
- Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan.
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Akbar A, Bint-E-Farrakh M, Crosby AH, Gul A, Harlalka GV. Variants in NIPAL4 and ALOXE3 cause autosomal recessive congenital ichthyosis in Pakistani families. Congenit Anom (Kyoto) 2020; 60:149-150. [PMID: 31883158 DOI: 10.1111/cga.12366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 12/22/2019] [Accepted: 12/25/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Abida Akbar
- RILD Building, Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, UK.,Department of Biological Sciences, International Islamic University, Islamabad, Pakistan
| | - Muneeba Bint-E-Farrakh
- Department of Biological Sciences, International Islamic University, Islamabad, Pakistan
| | - Andrew H Crosby
- RILD Building, Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, UK
| | - Asma Gul
- Department of Biological Sciences, International Islamic University, Islamabad, Pakistan
| | - Gaurav V Harlalka
- RILD Building, Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, UK.,Rajarshi Shahu College of Pharmacy, Malvihir, Buldana, India
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Esperón-Moldes U, Ginarte-Val M, Rodríguez-Pazos L, Fachal L, Martín-Santiago A, Vicente A, Jiménez-Gallo D, Guillén-Navarro E, Sampol LM, González-Enseñat MA, Vega A. Novel CYP4F22 mutations associated with autosomal recessive congenital ichthyosis (ARCI). Study of the CYP4F22 c.1303C>T founder mutation. PLoS One 2020; 15:e0229025. [PMID: 32069299 PMCID: PMC7028276 DOI: 10.1371/journal.pone.0229025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Accepted: 01/28/2020] [Indexed: 11/18/2022] Open
Abstract
Mutations in CYP4F22 cause autosomal recessive congenital ichthyosis (ARCI). However, less than 10% of all ARCI patients carry a mutation in CYP4F22. In order to identify the molecular basis of ARCI among our patients (a cohort of ninety-two Spanish individuals) we performed a mutational analysis using direct Sanger sequencing in combination with a multigene targeted NGS panel. From these, eight ARCI families (three of them with Moroccan origin) were found to carry five different CYP4F22 mutations, of which two were novel. Computational analysis showed that the mutations found were present in highly conserved residues of the protein and may affect its structure and function. Seven of the eight families were carriers of a highly recurrent CYP4F22 variant, c.1303C>T; p.(His435Tyr). A 12Mb haplotype was reconstructed in all c.1303C>T carriers by genotyping ten microsatellite markers flanking the CYP4F22 gene. A prevalent 2.52Mb haplotype was observed among Spanish carrier patients suggesting a recent common ancestor. A smaller core haplotype of 1.2Mb was shared by Spanish and Moroccan families. Different approaches were applied to estimate the time to the most recent common ancestor (TMRCA) of carrier patients with Spanish origin. The age of the mutation was calculated by using DMLE and BDMC2. The algorithms estimated that the c.1303C>T variant arose approximately 2925 to 4925 years ago, while Spanish carrier families derived from a common ancestor who lived in the XIII century. The present study reports five CYP4F22 mutations, two of them novel, increasing the number of CYP4F22 mutations currently listed. Additionally, our results suggest that the recurrent c.1303C>T change has a founder effect in Spanish population and c.1303C>T carrier families originated from a single ancestor with probable African ancestry.
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Affiliation(s)
- Uxia Esperón-Moldes
- Fundación Pública Galega de Medicina Xenómica-SERGAS, Grupo de Medicina Xenómica-USC, CIBERER, IDIS, Santiago de Compostela, Spain
- Departamento de Ciencias Forenses, Anatomía Patolóxica, Xinecoloxía, Obstetricia e Pediatría, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Manuel Ginarte-Val
- Dermatology Service of Complexo Hospitalario Universitario de Santiago, Santiago de Compostela, Spain
| | | | - Laura Fachal
- Fundación Pública Galega de Medicina Xenómica-SERGAS, Grupo de Medicina Xenómica-USC, CIBERER, IDIS, Santiago de Compostela, Spain
| | - Ana Martín-Santiago
- Dermatology Service of Hospital Universitari Son Espases, Palma de Mallorca, Spain
| | - Asunción Vicente
- Dermatology Service of Hospital Sant Joan de Déu, Barcelona, Spain
| | | | | | | | | | - Ana Vega
- Fundación Pública Galega de Medicina Xenómica-SERGAS, Grupo de Medicina Xenómica-USC, CIBERER, IDIS, Santiago de Compostela, Spain
- * E-mail:
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Lima Cunha D, Alakloby OM, Gruber R, Kakar N, Ahmad J, Alawbathani S, Plank R, Eckl K, Krabichler B, Altmüller J, Nürnberg P, Zschocke J, Borck G, Schmuth M, Alabdulkareem AS, Abdulaziz Alnutaifi K, Hennies HC. Unknown mutations and genotype/phenotype correlations of autosomal recessive congenital ichthyosis in patients from Saudi Arabia and Pakistan. Mol Genet Genomic Med 2019; 7:e539. [PMID: 30600594 PMCID: PMC6418373 DOI: 10.1002/mgg3.539] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/26/2018] [Accepted: 11/15/2018] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Autosomal recessive congenital ichthyosis (ARCI) is a genetically and phenotypically heterogeneous skin disease, associated with defects in the skin permeability barrier. Several but not all genes with underlying mutations have been identified, but a clear correlation between genetic causes and clinical picture has not been described to date. METHODS Our study included 19 families from Saudi Arabia, Yemen, and Pakistan. All patients were born to consanguineous parents and diagnosed with ARCI. Mutations were analyzed by homozygosity mapping and direct sequencing. RESULTS We have detected mutations in all families in five different genes: TGM1, ABCA12, CYP4F22, NIPAL4, and ALOXE3. Five likely pathogenic variants were unknown so far, a splice site and a missense variant in TGM1, a splice site variant in NIPAL4, and missense variants in ABCA12 and CYP4F22. We attributed TGM1 and ABCA12 mutations to the most severe forms of lamellar and erythematous ichthyoses, respectively, regardless of treatment. Other mutations highlighted the presence of a phenotypic spectrum in ARCI. CONCLUSION Our results contribute to expanding the mutational spectrum of ARCI and revealed new insights into genotype/phenotype correlations. The findings are instrumental for a faster and more precise diagnosis, a better understanding of the pathophysiology, and the definition of targets for more specific therapies for ARCI.
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Affiliation(s)
- Dulce Lima Cunha
- Department of Biological and Geographical Sciences, University of Huddersfield, Huddersfield, UK.,Division of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria.,Cologne Center for Genomics, University of Cologne, Cologne, Germany
| | - Omar Mohammed Alakloby
- Department of Dermatology, College of Medicine, Imam Abdulrahman Bin Faisal University (formerly University of Dammam), Dammam, Saudi Arabia
| | - Robert Gruber
- Department of Dermatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Naseebullah Kakar
- Institute of Human Genetics, University of Ulm, Ulm, Germany.,Department of Biotechnology, BUITEMS, Quetta, Pakistan
| | - Jamil Ahmad
- Department of Biotechnology, BUITEMS, Quetta, Pakistan
| | - Salem Alawbathani
- Cologne Center for Genomics, University of Cologne, Cologne, Germany
| | - Roswitha Plank
- Department of Biological and Geographical Sciences, University of Huddersfield, Huddersfield, UK.,Division of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Katja Eckl
- Department of Biological and Geographical Sciences, University of Huddersfield, Huddersfield, UK.,Division of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria.,Department of Biology, Edge Hill University, Ormskirk, UK
| | - Birgit Krabichler
- Division of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Janine Altmüller
- Cologne Center for Genomics, University of Cologne, Cologne, Germany
| | - Peter Nürnberg
- Cologne Center for Genomics, University of Cologne, Cologne, Germany.,CECAD Cluster of Excellence on Cellular Stress Responses in Aging-associated Diseases, University of Cologne, Cologne, Germany
| | - Johannes Zschocke
- Division of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Guntram Borck
- Institute of Human Genetics, University of Ulm, Ulm, Germany
| | - Matthias Schmuth
- Department of Dermatology, Medical University of Innsbruck, Innsbruck, Austria
| | | | - Kholood Abdulaziz Alnutaifi
- Department of Dermatology, College of Medicine, Imam Abdulrahman Bin Faisal University (formerly University of Dammam), Dammam, Saudi Arabia
| | - Hans Christian Hennies
- Department of Biological and Geographical Sciences, University of Huddersfield, Huddersfield, UK.,Division of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria.,Cologne Center for Genomics, University of Cologne, Cologne, Germany.,CECAD Cluster of Excellence on Cellular Stress Responses in Aging-associated Diseases, University of Cologne, Cologne, Germany
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