PTEN methylation dependent sinonasal mucosal melanoma

Sang Hee Lee, Mi Ryung Roh, Beodeul Kang, Kyu Hyun Park, Soo Hee Kim, Sang Eun Lee, Sun Young Rha

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5 Citations (Scopus)


Sinonasal mucosal melanoma (SMM) is an aggressive and rare type of melanoma. Although the classic RAS-RAF-MEK pathway is thought to be the main pathway involved in melanoma pathogenesis, genetic alterations in the phosphatidylinositol 3-kinase-AKT pathway, including PTEN-regulated signaling, are also thought to contribute. So far, data regarding altered PTEN expression and epigenetic mechanism of PTEN silencing in development of SMM is extremely limited. Herein we report on a case of SMM with liver and bone metastases with an epigenetic alteration of PTEN. Results of mutation analysis for BRAF, NRAS, HRAS, KRAS, PIK3CA, c-Kit, and PTEN were negative; however, methylation of PTEN CpG islands was observed. Our case not only supports PTEN as a major tumor suppressor involved in melanoma tumorigenesis, but also a potential epigenetic mechanism of PTEN silencing in development of SMM.

Original languageEnglish
Pages (from-to)853-858
Number of pages6
JournalCancer Research and Treatment
Issue number2
Publication statusPublished - 2016 Apr 1

Bibliographical note

Publisher Copyright:
© 2016 by the Korean Cancer Association.

All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research


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