Title |
Keratinocytic epidermal nevus syndrome with Schwann cell proliferation, lipomatous tumour and mosaic KRAS mutation
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Published in |
BMC Medical Genomics, February 2015
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DOI | 10.1186/s12881-015-0146-5 |
Pubmed ID | |
Authors |
Said Farschtschi, Victor-Felix Mautner, Silke Hollants, Christian Hagel, Marijke Spaepen, Christoph Schulte, Eric Legius, Hilde Brems |
Abstract |
Keratinocytic epidermal nevus syndrome (KENS) is a complex disorder not only characterized by the presence of epidermal nevi but also by abnormalities in the internal organ systems. A small number of cases with KENS are molecularly characterized and reported in the literature with somatic activating RAS, FGFR3 and PIK3CA mutations. In this study we present a patient with hyper- and hypopigmented regions, verrucous pigmented skin lesions and a paravertebral conglomerate tumour at the level of the cervical and thoracic spine. A large lipomatous dumbbell tumour caused atrophy of the spinal cord with progressive paraparesis. We identified a mosaic c.35G > A (p.Gly12Asp) KRAS mutation in the pigmented verrucous epidermal nevus tissue, the intraneural schwann cells and the lipoma. The c.35G > A (p.Gly12Asp) KRAS mutation was absent in the peripheral blood leukocytes. We conclude that KENS, the intraneural Schwann cell proliferation and the lipoma in this individual were caused by a postzygotic and mosaic activating c.35G > A (p.Gly12Asp) KRAS mutation. |
X Demographics
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United States | 1 | 100% |
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Members of the public | 1 | 100% |
Mendeley readers
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Unknown | 30 | 100% |
Demographic breakdown
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Researcher | 5 | 17% |
Student > Bachelor | 5 | 17% |
Student > Postgraduate | 5 | 17% |
Other | 3 | 10% |
Student > Master | 3 | 10% |
Other | 4 | 13% |
Unknown | 5 | 17% |
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Biochemistry, Genetics and Molecular Biology | 6 | 20% |
Neuroscience | 4 | 13% |
Agricultural and Biological Sciences | 3 | 10% |
Unspecified | 2 | 7% |
Other | 0 | 0% |
Unknown | 5 | 17% |