DR negativity is a distinctive feature of M1/M2 AML cases with NPM1 mutation

Meilani Syampurnawati, Eiji Tatsumi, Bambang Ardianto, Mariko Takenokuchi, Yuji Nakamachi, Seiji Kawano, Shun ichi Kumagai, Katsuyasu Saigo, Toshimitsu Matsui, Takayuki Takahashi, Ken ichi Nagai, Gunadi, Hisahide Nishio, Hiroki Yabe, Shin ichi Kondo, Yoshitake Hayashi

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Our previous observation of a higher incidence of FLT3-ITD in DR- M1/M2 AML than in DR+ M1/M2 led to an investigation of NPM1 mutation in the same samples, since DR- AML and AML with NPM1 mutation share such characteristics as normal karyotype, the absence of CD34, and FLT3-ITD. NPM1 mutation was found in 18 of 26 (69.2%) of DR- cases, but not in any of 28 DR+ cases. FLT3-ITD was noted in 66.7% of the cases with NPM1 mutation. These findings point to DR negativity as another phenotypic feature of AML with NPM1 mutation.

Original languageEnglish
Pages (from-to)1141-1143
Number of pages3
JournalLeukemia Research
Volume32
Issue number7
DOIs
StatePublished - Jul 2008
Externally publishedYes

Keywords

  • FLT3 mutation
  • HLA-DR-negative AML
  • NPM1 mutation

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