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Zhang J, Xu Q, Deng D. Genetic and phenotypic diversities of nevus spilus phenotypes: Case series and a proposed diagnostic algorithm. Clin Genet 2023; 104:593-597. [PMID: 37501405 DOI: 10.1111/cge.14402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/27/2023] [Accepted: 07/05/2023] [Indexed: 07/29/2023]
Abstract
Nevus spilus (NS) is composed of multiple types that characterized by a congenital hyperpigmented patch within variable even superimposed lesions originating from melanocytic lineage cells. The molecular mechanism and classification of diverse NS phenotypes remain unclear. Five children with a phenotype of NS were genotyped by the panel based on next-generation sequencing in this study. DNA from biopsies, blood samples and hair follicle were sequenced to confirm the presence of a somatic mutation. Sequencing results indicated somatic mutation in the gene of NRAS or HRAS in all biopsies from the nevi, and the pathogenic variants were not detected in the samples of blood and hair follicle. This study successfully identified the somatic mutation in five unrelated children with diverse NS phenotypes. Moreover, it provided typical images and differential diagnoses between variable NS phenotypes in clinical, pathological, and genetic features, and first proposed a clinical diagnostic algorithm that contributed to simplifying and optimizing the diagnoses and management of these overlapped diseases.
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Affiliation(s)
- Jia Zhang
- Department of Dermatology, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Qianyue Xu
- Department of Dermatology, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Dan Deng
- Department of Dermatology, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Department of Dermatology, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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2
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Gallo-Pineda G, Ortiz-Prieto A, Villegas-Romero I, Navarro-Navarro I, Linares-Barrios M. DDR2 mutation in a spilus-type giant congenital melanocytic nevus. J Eur Acad Dermatol Venereol 2022; 36:e793-e794. [PMID: 35620941 DOI: 10.1111/jdv.18273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 05/18/2022] [Indexed: 11/26/2022]
Affiliation(s)
- G Gallo-Pineda
- Department of Dermatology. Puerta del Mar University Hospital, Cádiz, Spain
| | - A Ortiz-Prieto
- Department of Dermatology. Puerta del Mar University Hospital, Cádiz, Spain
| | - I Villegas-Romero
- Department of Dermatology. Puerta del Mar University Hospital, Cádiz, Spain
| | - I Navarro-Navarro
- Department of Dermatology. Puerta del Mar University Hospital, Cádiz, Spain
| | - M Linares-Barrios
- Department of Dermatology. Puerta del Mar University Hospital, Cádiz, Spain
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3
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Martins da Silva V, Martinez-Barrios E, Tell-Martí G, Dabad M, Carrera C, Aguilera P, Brualla D, Esteve-Codina A, Vicente A, Puig S, Puig-Butillé JA, Malvehy J. Genetic Abnormalities in Large to Giant Congenital Nevi: Beyond NRAS Mutations. J Invest Dermatol 2018; 139:900-908. [PMID: 30359577 DOI: 10.1016/j.jid.2018.07.045] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 07/24/2018] [Accepted: 07/26/2018] [Indexed: 02/03/2023]
Abstract
Large and giant congenital melanocytic nevi (CMN) are rare melanocytic lesions mostly caused by postzygotic NRAS alteration. Molecular characterization is usually focused on NRAS and BRAF genes in a unique biopsy sample of the CMN. However, large/giant CMN may exhibit phenotypic differences among distinct areas, and patients differ in features such as presence of multiple CMN or spilus-like lesions. Herein, we have characterized a series of 21 large/giant CMN including patients with spilus-type nevi (9/21 patients, 42.8%). Overall, 53 fresh frozen biopsy samples corresponding to 40 phenotypically characterized areas of large/giant CMNs and 13 satellite lesions were analyzed with a multigene panel and RNA sequencing. Mutational screening showed mutations in 76.2% (16/21) of large/giant CMNs. A NRAS mutation was found in 57.1% (12/21) of patients, and mutations in other genes such as BRAF, KRAS, APC, and MET were detected in 14.3% (3/21) of patients. RNA sequencing showed the fusion transcript ZEB2-ALK and SOX5-RAF1 in large/giant CMN from two patients without missense mutations. Both alterations were not detected in unaffected skin and were detected in different areas of affected skin. These findings suggest that large/giant CMN may result from distinct molecular events in addition to NRAS mutations, including point mutations and fusion transcripts.
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Affiliation(s)
- Vanessa Martins da Silva
- Melanoma Unit, Department of Dermatology, Hospital Clínic de Barcelona, University of Barcelona, Barcelona, Catalonia, Spain
| | - Estefania Martinez-Barrios
- Department of Biochemical and Molecular Genetics, Hospital Clínic, IDIBAPS, University of Barcelona, Catalonia, Spain
| | - Gemma Tell-Martí
- Melanoma Unit, Department of Dermatology, Hospital Clínic de Barcelona, University of Barcelona, Barcelona, Catalonia, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras, Instituto de Salud Carlos III, Barcelona, Catalonia, Spain
| | - Marc Dabad
- CNAG-CRG, Centre for Genomic Regulation, Barcelona Institute of Science and Technology, Barcelona, Catalonia, Spain; Universitat Pompeu Fabra, Barcelona, Catalonia, Spain
| | - Cristina Carrera
- Melanoma Unit, Department of Dermatology, Hospital Clínic de Barcelona, University of Barcelona, Barcelona, Catalonia, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras, Instituto de Salud Carlos III, Barcelona, Catalonia, Spain
| | - Paula Aguilera
- Melanoma Unit, Department of Dermatology, Hospital Clínic de Barcelona, University of Barcelona, Barcelona, Catalonia, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras, Instituto de Salud Carlos III, Barcelona, Catalonia, Spain
| | - Daniel Brualla
- Department of Pediatric Dermatology, Hospital San Joan de Déu, Barcelona, Spain
| | - Anna Esteve-Codina
- CNAG-CRG, Centre for Genomic Regulation, Barcelona Institute of Science and Technology, Barcelona, Catalonia, Spain; Universitat Pompeu Fabra, Barcelona, Catalonia, Spain
| | - Asunción Vicente
- Department of Pediatric Dermatology, Hospital San Joan de Déu, Barcelona, Spain
| | - Susana Puig
- Melanoma Unit, Department of Dermatology, Hospital Clínic de Barcelona, University of Barcelona, Barcelona, Catalonia, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras, Instituto de Salud Carlos III, Barcelona, Catalonia, Spain
| | - Joan Anton Puig-Butillé
- Department of Biochemical and Molecular Genetics, Hospital Clínic, IDIBAPS, University of Barcelona, Catalonia, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras, Instituto de Salud Carlos III, Barcelona, Catalonia, Spain; Molecular Biology CORE, Hospital Clínic, IDIBAPS, University of Barcelona, Catalonia, Spain.
| | - Josep Malvehy
- Melanoma Unit, Department of Dermatology, Hospital Clínic de Barcelona, University of Barcelona, Barcelona, Catalonia, Spain; Department of Biochemical and Molecular Genetics, Hospital Clínic, IDIBAPS, University of Barcelona, Catalonia, Spain
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4
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Porubsky C, Teer JK, Zhang Y, Deschaine M, Sondak VK, Messina JL. Genomic analysis of a case of agminated Spitz nevi and congenital-pattern nevi arising in extensive nevus spilus. J Cutan Pathol 2017; 45:180-183. [PMID: 29210482 DOI: 10.1111/cup.13082] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 11/02/2017] [Accepted: 11/17/2017] [Indexed: 12/30/2022]
Abstract
Nevus spilus is a melanocytic neoplasm characterized by a tan macular background punctuated by multiple hyperpigmented macules or papules that represent various types of nevi. These include junctional and compound nevi, Spitz nevi, and rarely blue nevi. We report a unique case of widespread, multiple nevi spili giving rise to agminated Spitz nevi and congenital-pattern compound nevi. We performed genetic analysis to further characterize the mutational profile of this rare entity.
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Affiliation(s)
- Caitlin Porubsky
- Department of Dermatology, PCOM Mednet/North Fulton Hospital Medical Campus, Roswell, Georgia
| | - Jamie K Teer
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, Florida.,Department of Anatomic Pathology, Moffitt Cancer Center, Tampa, Florida
| | - Yonghong Zhang
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, Florida
| | - Maria Deschaine
- Department of Anatomic Pathology, Moffitt Cancer Center, Tampa, Florida
| | - Vernon K Sondak
- Department of Cutaneous Oncology, Moffitt Cancer Center, Tampa, Florida
| | - Jane L Messina
- Department of Anatomic Pathology, Moffitt Cancer Center, Tampa, Florida.,Department of Cutaneous Oncology, Moffitt Cancer Center, Tampa, Florida
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