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A case of recurrent histiocytic sarcoma with MAP2K1 pathogenic variant treated with the MEK inhibitor trametinib

  • Tadashi Kumamoto
  • , Yuki Aoki
  • , Tomoko Sonoda
  • , Miho Yamanishi
  • , Ayumu Arakawa
  • , Masanaka Sugiyama
  • , Nami Shirakawa
  • , Sae Ishimaru
  • , Yoshimasa Saito
  • , Akiko Maeshima
  • , Miho Maeda
  • , Chitose Ogawa

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Histiocytic sarcoma in advanced clinical stages is typically an aggressive neoplasm, with poor response to conventional chemotherapy. An 18-year-old male with refractory histiocytic sarcoma that had transformed from Rosai–Dorfman disease was admitted to our hospital. A pathogenic variant of MAP2K1 was detected by next-generation sequencing of tumor specimens. Affected regions showed excellent responses to the MEK inhibitor trametinib. It has been reported that RAS/MEK/ERK pathway is activated in many cases of histiocytic sarcoma. MEK inhibition may represent a useful treatment option in histiocytic sarcoma.

Original languageEnglish
Pages (from-to)228-232
Number of pages5
JournalInternational Journal of Hematology
Volume109
Issue number2
DOIs
Publication statusPublished - 20 Feb 2019
Externally publishedYes

Keywords

  • Histiocytic sarcoma
  • MAP2K1
  • MEK inhibitor
  • Rosai–Dorfman disease
  • Trametinib

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