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Zhao A, Wang Y, Jia N, Lu F, Pan C, Wu F, Cao Q, Li X, Wang X, Wang S, He W, Zeng Q, Huang H, Han J, Li M. Mosaic GJB2 mutations in widespread porokeratotic adnexal ostial nevus: Report of two patients. J Dermatol 2024. [PMID: 38292003 DOI: 10.1111/1346-8138.17127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 12/06/2023] [Accepted: 01/05/2024] [Indexed: 02/01/2024]
Abstract
Porokeratotic adnexal ostial nevus (PAON) is a rare adnexal hamartoma characterized by keratotic papules following Blaschko's lines, typically located on the unilateral distal extremities. Cutaneous somatic GJB2 mutations have been linked to the pathogenesis of PAON. However, the genetic mechanism underlying bilateral or extended forms, which are less documented, remains unknown. In this study, we presented two cases of PAON with widespread cutaneous lesions and scalp involvement, and demonstrated the presence of GJB2 mosaic mutations in both patients. We further investigated the mosaic frequency in different tissues to gain insights into the mutation events contributing to the phenotype of widespread PAON. Our findings suggest that early postzygotic mutation causing mosaic GJB2 mutations may contribute to the widespread phenotype of PAON, thereby enriching the disease spectrum and mutation profile of PAON.
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Affiliation(s)
- Anqi Zhao
- Department of Dermatology, The Children's Hospital of Fudan University, Shanghai, China
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yumeng Wang
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ning Jia
- Central Laboratory, Shanghai Dermatology Hospital, Tongji University School of Medicine, Shanghai, China
| | - Fangqi Lu
- School of Medicine, Institute of Photomedicine, Shanghai Skin Disease Hospital, Tongji University, Shanghai, China
| | - Chaolan Pan
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Fei Wu
- Department of Pathology, School of Medicine, Shanghai Skin Disease Hospital, Tongji University, Shanghai, China
| | - Qiaoyu Cao
- Department of Dermatology, The Children's Hospital of Fudan University, Shanghai, China
| | - Xin Li
- Department of Dermatology, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Xinyi Wang
- Department of Dermatology, The Children's Hospital of Fudan University, Shanghai, China
| | - Shucui Wang
- Department of Dermatology, The Children's Hospital of Fudan University, Shanghai, China
| | - Wei He
- Department of Dermatology, The Children's Hospital of Fudan University, Shanghai, China
| | - Qin Zeng
- Department of Dermatology, The Children's Hospital of Fudan University, Shanghai, China
| | - Haisheng Huang
- Department of Dermatology, The Children's Hospital of Fudan University, Shanghai, China
| | - Jianwen Han
- Department of Dermatology, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Ming Li
- Department of Dermatology, The Children's Hospital of Fudan University, Shanghai, China
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