PMID- 20805365 OWN - NLM STAT- MEDLINE DCOM- 20110208 LR - 20211203 IS - 1528-0020 (Electronic) IS - 0006-4971 (Linking) VI - 116 IP - 25 DP - 2010 Dec 16 TI - IDH1 mutations are detected in 6.6% of 1414 AML patients and are associated with intermediate risk karyotype and unfavorable prognosis in adults younger than 60 years and unmutated NPM1 status. PG - 5486-96 LID - 10.1182/blood-2010-02-267955 [doi] AB - Mutations in the IDH1 gene at position R132 coding for the enzyme cytosolic isocitrate dehydrogenase are known in glioma and have recently been detected also in acute myeloid leukemia (AML). These mutations result in an accumulation of alpha-ketoglutarate to R (2)-2-hydroxyglutarate (2HG). To further clarify the role of this mutation in AML, we have analyzed IDH1R132 in 1414 AML patients. We detected IDH1R132 mutations in 93 of 1414 patients (6.6%) with a clear prevalence in intermediate risk karyotype group (10.4%, P < .001). Although IDH1R132 mutations can incidentally occur together with all other molecular markers, there were strong associations with NPM1 mutations (14.2% vs 5.4% in NPM1wt, P < .001) and MLL-PTD (18.2% vs 7.0% in MLLwt, P = .020). IDH1-mutated cases more often had AML without maturation/French-American-British M1 (P < .001), an immature immunophenotype, and female sex (8.7% vs 4.7% in male, P = .003) compared with IDH1wt cases. Prognosis was adversely affected by IDH1 mutations with trend for shorter overall survival (P = .110), a shorter event-free survival (P < .003) and a higher cumulative risk for relapse (P = .001). IDH1 mutations were of independent prognostic relevance for event-free survival (P = .039) especially in the age group < 60 years (P = .028). In conclusion, these data show that IDH1R132 may significantly add information regarding characterization and prognostication in AML. FAU - Schnittger, Susanne AU - Schnittger S AD - Munich Leukemia Laboratory, Munich, Germany. susanne.schnittger@mll.com FAU - Haferlach, Claudia AU - Haferlach C FAU - Ulke, Madlen AU - Ulke M FAU - Alpermann, Tamara AU - Alpermann T FAU - Kern, Wolfgang AU - Kern W FAU - Haferlach, Torsten AU - Haferlach T LA - eng PT - Comparative Study PT - Journal Article DEP - 20100830 PL - United States TA - Blood JT - Blood JID - 7603509 RN - 0 (DNA, Neoplasm) RN - 0 (NPM1 protein, human) RN - 0 (Nuclear Proteins) RN - 117896-08-9 (Nucleophosmin) RN - EC 1.1.1.41 (Isocitrate Dehydrogenase) RN - EC 1.1.1.42. (IDH1 protein, human) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - DNA, Neoplasm/genetics MH - Female MH - Genotype MH - Humans MH - Immunophenotyping MH - Isocitrate Dehydrogenase/*genetics MH - Karyotyping MH - Leukemia, Myeloid, Acute/classification/*genetics/pathology MH - Male MH - Middle Aged MH - Mutation/*genetics MH - Nuclear Proteins/*genetics MH - Nucleophosmin MH - Polymerase Chain Reaction MH - Prognosis MH - Risk Factors MH - Survival Rate MH - Young Adult EDAT- 2010/09/02 06:00 MHDA- 2011/02/09 06:00 CRDT- 2010/09/01 06:00 PHST- 2010/09/01 06:00 [entrez] PHST- 2010/09/02 06:00 [pubmed] PHST- 2011/02/09 06:00 [medline] AID - S0006-4971(20)60343-3 [pii] AID - 10.1182/blood-2010-02-267955 [doi] PST - ppublish SO - Blood. 2010 Dec 16;116(25):5486-96. doi: 10.1182/blood-2010-02-267955. Epub 2010 Aug 30.