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Arias-Pérez RD, Gallego-Quintero S, Taborda NA, Restrepo JE, Zambrano-Cruz R, Tamayo-Agudelo W, Bermúdez P, Duque C, Arroyave I, Tejada-Moreno JA, Villegas-Lanau A, Mejía-García A, Zapata W, Hernandez JC, Cuartas-Montoya G. Ichthyosis: case report in a Colombian man with genetic alterations in ABCA12 and HRNR genes. BMC Med Genomics 2021; 14:140. [PMID: 34039366 PMCID: PMC8157432 DOI: 10.1186/s12920-021-00987-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 05/18/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Ichthyosis is a heterogeneous group of diseases caused by genetic disorders related to skin formation. They are characterized by generalized dry skin, scaling, hyperkeratosis and frequently associated with erythroderma. Among its different types, harlequin ichthyosis (HI) stands out due to its severity. HI is caused by mutations in the ABCA12 gene, which encodes essential proteins in epidermal lipid transport, and it helps maintain the homeostasis of the stratum corneum of the epidermis. However, due to the wide spectrum of genetic alterations that can cause ichthyosis, holistic medical care, and genetic studies are required to improve the diagnosis and outcomes of these diseases. CASE PRESENTATION Here, we presented the case of a 19 years old male patient who was a premature infant and exhibited clinical features consistent with HI, including bright yellow hyperkeratotic plates with erythematous fissures that covered his entire body like a collodion baby. Currently, he exhibited erythroderma, photosensitivity, ectropion, auricular pavilion alterations, and musculoskeletal disorders, such as equinovarus feet, fingers, hands, and hypoplastic feet with contractures in flexion and marked difficulty in fine motor skills. In addition, he presented dyschromatopsia, Achilles reflex hyporeflexia, slight speech, dental alteration and deficient cognitive performance. After the genetic sequencing, variants were found in ABCA12 and HRNR which are related to several skin diseases, including ichthyosis. CONCLUSIONS Although in clinical practice, ichthyosis is a common entity, a severe type of ichthyosis is presented, highlighting the importance of appropriate genetic diagnosis, given the broad spectrum of genetic alterations with similar phenotypic and clinical characteristics. These pathologies must be known to guarantee initial support measures to prevent complications and offer multidisciplinary management to those patients.
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Affiliation(s)
- Ruben D Arias-Pérez
- Grupo de Investigaciones Biomédicas Uniremington, Programa de Medicina, Facultad de Ciencias de La Salud, Corporación Universitaria Remington, Medellín, Colombia
| | - Salomón Gallego-Quintero
- Grupo de Investigaciones Biomédicas Uniremington, Programa de Medicina, Facultad de Ciencias de La Salud, Corporación Universitaria Remington, Medellín, Colombia
| | - Natalia A Taborda
- Grupo de Investigaciones Biomédicas Uniremington, Programa de Medicina, Facultad de Ciencias de La Salud, Corporación Universitaria Remington, Medellín, Colombia
| | - Jorge E Restrepo
- Grupo OBSERVATOS, Facultad de Educación Y Ciencias Sociales, Tecnológico de Antioquia -Institución Universitaria, Medellín, Colombia
| | - Renato Zambrano-Cruz
- Grupo Neurociencia Y Cognición, Facultad de Psicología, Universidad Cooperativa de Colombia, Medellín, Colombia
| | - William Tamayo-Agudelo
- Grupo Neurociencia Y Cognición, Facultad de Psicología, Universidad Cooperativa de Colombia, Medellín, Colombia
| | - Patricia Bermúdez
- Grupo GIOM, Facultad de Odontología, Universidad Cooperativa de Colombia, Medellín, Colombia
| | - Constanza Duque
- Grupo GIOM, Facultad de Odontología, Universidad Cooperativa de Colombia, Medellín, Colombia
| | - Ismael Arroyave
- Grupo GIOM, Facultad de Odontología, Universidad Cooperativa de Colombia, Medellín, Colombia
| | - Johanna A Tejada-Moreno
- Grupo de Genética Molecular (GENMOL), Facultad de Ciencias Exactas y Naturales (FCEN), Universidad de Antioquia UdeA, Medellín, Colombia
| | - Andrés Villegas-Lanau
- Grupo de Genética Molecular (GENMOL), Facultad de Ciencias Exactas y Naturales (FCEN), Universidad de Antioquia UdeA, Medellín, Colombia
| | - Alejandro Mejía-García
- Grupo de Genética Molecular (GENMOL), Facultad de Ciencias Exactas y Naturales (FCEN), Universidad de Antioquia UdeA, Medellín, Colombia
| | - Wildeman Zapata
- Infettare, Facultad de Medicina, Universidad Cooperativa de Colombia, Medellín, Colombia
| | - Juan C Hernandez
- Infettare, Facultad de Medicina, Universidad Cooperativa de Colombia, Medellín, Colombia.
| | - Gina Cuartas-Montoya
- Grupo Neurociencia Y Cognición, Facultad de Psicología, Universidad Cooperativa de Colombia, Medellín, Colombia
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Positive selection in Europeans and East-Asians at the ABCA12 gene. Sci Rep 2019; 9:4843. [PMID: 30890716 PMCID: PMC6424970 DOI: 10.1038/s41598-019-40360-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 02/07/2019] [Indexed: 11/17/2022] Open
Abstract
Natural selection acts on genetic variants by increasing the frequency of alleles responsible for a cellular function that is favorable in a certain environment. In a previous genome-wide scan for positive selection in contemporary humans, we identified a signal of positive selection in European and Asians at the genetic variant rs10180970. The variant is located in the second intron of the ABCA12 gene, which is implicated in the lipid barrier formation and down-regulated by UVB radiation. We studied the signal of selection in the genomic region surrounding rs10180970 in a larger dataset that includes DNA sequences from ancient samples. We also investigated the functional consequences of gene expression of the alleles of rs10180970 and another genetic variant in its proximity in healthy volunteers exposed to similar UV radiation. We confirmed the selection signal and refine its location that extends over 35 kb and includes the first intron, the first two exons and the transcription starting site of ABCA12. We found no obvious effect of rs10180970 alleles on ABCA12 gene expression. We reconstructed the trajectory of the T allele over the last 80,000 years to discover that it was specific to H. sapiens and present in non-Africans 45,000 years ago.
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Washio K, Sumi M, Nakata K, Fukunaga A, Yamana K, Koda T, Morioka I, Nishigori C, Yamanishi K. Case of harlequin ichthyosis with a favorable outcome: Early treatment and novel, differentially expressed, alternatively spliced transcripts of the ATP-binding cassette subfamily A member 12 gene. J Dermatol 2017; 44:950-953. [DOI: 10.1111/1346-8138.13823] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 02/01/2017] [Indexed: 12/01/2022]
Affiliation(s)
- Ken Washio
- Division of Dermatology; Nishi-Kobe Medical Center; Kobe Japan
- Division of Dermatology; Department of Internal Related; Kobe University Graduate School of Medicine; Kobe Japan
| | - Mayuko Sumi
- Division of Dermatology; Department of Internal Related; Kobe University Graduate School of Medicine; Kobe Japan
| | - Kaori Nakata
- Division of Dermatology; Department of Internal Related; Kobe University Graduate School of Medicine; Kobe Japan
| | - Atsushi Fukunaga
- Division of Dermatology; Department of Internal Related; Kobe University Graduate School of Medicine; Kobe Japan
| | - Keiji Yamana
- Division of Pediatrics; Department of Internal Related; Kobe University Graduate School of Medicine; Kobe Japan
| | - Tsubasa Koda
- Division of Pediatrics; Department of Internal Related; Kobe University Graduate School of Medicine; Kobe Japan
| | - Ichiro Morioka
- Division of Pediatrics; Department of Internal Related; Kobe University Graduate School of Medicine; Kobe Japan
| | - Chikako Nishigori
- Division of Dermatology; Department of Internal Related; Kobe University Graduate School of Medicine; Kobe Japan
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