Somatic Embryonic FGFR2 Mutations in Keratinocytic Epidermal Nevi.
Somatic Embryonic FGFR2 Mutations in Keratinocytic Epidermal Nevi.
复制标题
角化细胞表皮痣中的体细胞胚胎 FGFR2 突变。
DOI:
10.1016/j.jid.2016.03.040
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
F. Real
中科院分区:
文献类型:
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作者:
A. Toll;L. C. Fernández;T. Pons;L. Groesser;A. Sagrera;E. Carrillo;A. Vicente;E. Baselga;M. Vázquez;S. Beltran;D. Pisano;D. Rueda;M. Gut;R. Pujol;C. Hafner;I. Gut;A. Valencia;F. Real
Keratinocytic epidermal nevi (KEN) frequently harbor somatic mutations in FGFR3, PIK3CA, HRAS, NRAS, and KRAS. We performed whole exome sequencing (WES) to discover additional causes of KEN in lesions that were wild type for hotspot codons of these genes. We now report somatic mutations in fibroblast growth factor receptor 2 (FGFR2) in 4 of 23 KEN. Existing evidence and computational analyses of the predicted mutations found in KEN strongly support their pathogenic role. We estimate that 5–10% of KEN are caused by embryonic FGFR2 mutations. Our findings emphasize the notion that multiple genes involved in cell signaling can contribute to KEN.Epidermal nevi (EN) are hamartomatous proliferations of the skin epithelium, including keratinocytes, sebocytes, pilosebaceous units, and eccrine or apocrine glands. EN includes nonorganoid KEN, nevus sebaceous, and nevus comedonicus. Approximately 40% of KEN harbor postzygotic activating mutations in FGFR3 and PIK3CA (Hafner et al., 2007, Hernandez et al., 2007) and an additional 40% are caused by postzygotic activating RAS mutations, with a predominance of the HRAS G13R substitution (Hafner et al., 2012).
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