Volume 55, Issue 5 pp. 460-471
Research Article

Frequent BCOR aberrations in extranodal NK/T-Cell lymphoma, nasal type

Akito Dobashi

Akito Dobashi

Pathology Project for Molecular Targets, The Cancer Institute, Japanese Foundation for Cancer Research, Koto, Tokyo

Search for more papers by this author
Naoko Tsuyama

Naoko Tsuyama

Division of Pathology, The Cancer Institute, Japanese Foundation for Cancer Research, Koto, Tokyo

Search for more papers by this author
Reimi Asaka

Reimi Asaka

Pathology Project for Molecular Targets, The Cancer Institute, Japanese Foundation for Cancer Research, Koto, Tokyo

Division of Pathology, The Cancer Institute, Japanese Foundation for Cancer Research, Koto, Tokyo

Search for more papers by this author
Yuki Togashi

Yuki Togashi

Pathology Project for Molecular Targets, The Cancer Institute, Japanese Foundation for Cancer Research, Koto, Tokyo

Division of Pathology, The Cancer Institute, Japanese Foundation for Cancer Research, Koto, Tokyo

Search for more papers by this author
Kyoko Ueda

Kyoko Ueda

Hematology and Oncology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research, Koto, Tokyo

Search for more papers by this author
Seiji Sakata

Seiji Sakata

Pathology Project for Molecular Targets, The Cancer Institute, Japanese Foundation for Cancer Research, Koto, Tokyo

Search for more papers by this author
Satoko Baba

Satoko Baba

Pathology Project for Molecular Targets, The Cancer Institute, Japanese Foundation for Cancer Research, Koto, Tokyo

Search for more papers by this author
Kana Sakamoto

Kana Sakamoto

Pathology Project for Molecular Targets, The Cancer Institute, Japanese Foundation for Cancer Research, Koto, Tokyo

Search for more papers by this author
Kiyohiko Hatake

Kiyohiko Hatake

Hematology and Oncology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research, Koto, Tokyo

Search for more papers by this author
Kengo Takeuchi

Corresponding Author

Kengo Takeuchi

Pathology Project for Molecular Targets, The Cancer Institute, Japanese Foundation for Cancer Research, Koto, Tokyo

Division of Pathology, The Cancer Institute, Japanese Foundation for Cancer Research, Koto, Tokyo

Correspondence to: Kengo Takeuchi; Pathology Project for Molecular Targets, The Cancer Institute, Japanese Foundation for Cancer Research, 3-8-31 Ariake, Koto, Tokyo 135-8550, Japan. E-mail: [email protected]Search for more papers by this author
First published: 16 January 2016
Citations: 101

Abstract

Extranodal natural killer/T cell lymphoma (ENKTL) is a rare subtype of lymphoma. Recurrent mutations in the JAK-STAT pathway, recently reported in ENKTL cases, are interesting in terms of both pathogenesis and inhibitor therapy. However, the frequencies of these mutations are low and variable among reports, and other pathognomonic mutations in ENKTL remain to be elucidated. In the present study, targeted capture sequencing of 602 cancer-related genes from 25 frozen ENKTL samples was performed, 11 of which were matched to normal samples. Several recurrent somatic mutations involving BCOR (32%), TP53 (16%), DDX3X (12%), FAT4 (8%), NRAS (8%), MLL3 (12%), and MIR17HG (8%) were identified. The pattern of BCOR aberrations (1 nonsense and 5 frame-shift mutations, a mutation leading to a splicing error, and gene loss) suggested that loss of function of BCOR was the functionally important outcome of such changes. The literature was reviewed and the public data on BCOR aberrations was reanalyzed and it was found that the aberrations were frequently found in myeloid neoplasms, but, interestingly, were highly specific to ENKTL among lymphoid malignancies. Given the high frequency and pattern of aberration, BCOR is likely to play an important role in ENKTL pathogenesis as a tumor suppressor gene. © 2016 Wiley Periodicals, Inc.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.