Hafner, Christian and Landthaler, M. and Mentzel, T. and Vogt, T. (2010) FGFR3 and PIK3CA mutations in stucco keratosis and dermatosis papulosa nigra. BRITISH JOURNAL OF DERMATOLOGY, 162 (3). pp. 508-512. ISSN 0007-0963,
Full text not available from this repository. (Request a copy)Abstract
Background Stucco keratosis (STK) and dermatosis papulosa nigra (DPN) are referred to as variants of seborrhoeic keratosis. However, the genetic alterations involved in the pathogenesis of these benign tumours are unknown. Objectives Because FGFR3 and PIK3CA mutations have been reported to be involved in the pathogenesis of seborrhoeic keratosis, we analysed whether these mutations are also present in STK and DPN. Methods A SNaPshot(R) multiplex assay was used for analysis of 11 previously described FGFR3 hotspot mutations. PIK3CA mutations were analysed by a SNaPshot(R) assay covering five PIK3CA hotspot mutations. Results Five STK and two DPN samples were analysed. Three of five STK samples revealed a PIK3CA mutation (E542K, E545K), but no FGFR3 mutation was found. In contrast, both DPN samples harboured an FGFR3 mutation (R248C, S249C) but no PIK3CA mutation. Control tissues available for three samples did not show PIK3CA or FGFR3 mutations, excluding germline mutations and indicating a strong genotype-phenotype correlation between the mutation and the lesion. Conclusions These results indicate that FGFR3 and PIK3CA mutations are involved in the pathogenesis of STK and DPN. The molecular genetic findings furthermore support the concept that both skin lesions are specific variants of seborrhoeic keratosis, sharing a common genetic background.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CANCER-SPECIFIC MUTATIONS; BENIGN SKIN TUMORS; SEBORRHEIC KERATOSES; ACTIVATING MUTATIONS; EPIDERMAL NEVI; HIGH-FREQUENCY; BLADDER; dermatosis papulosa nigra; FGFR3; PIK3CA; stucco keratosis |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Dermatologie und Venerologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 05 Aug 2020 04:43 |
| Last Modified: | 05 Aug 2020 04:43 |
| URI: | https://pred.uni-regensburg.de/id/eprint/25016 |
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