scholarly journals Molecular Evaluation of DNMT3A and IDH1/2 Gene Mutation: Frequency, Distribution Pattern and Associations with Additional Molecular Markers in Normal Karyotype Indian Acute Myeloid Leukemia Patients

2014 ◽  
Vol 15 (3) ◽  
pp. 1247-1253 ◽  
Author(s):  
Firoz Ahmad ◽  
Rupali Mohota ◽  
Savita Sanap ◽  
Swarna Mandava ◽  
Bibhu Ranjan Das
Keyword(s):  
Acute Myeloid Leukemia ◽  
Molecular Markers ◽  
Distribution Pattern ◽  
Gene Mutation ◽  
Frequency Distribution ◽  
Myeloid Leukemia ◽  
Mutation Frequency ◽  
Normal Karyotype ◽  
Molecular Evaluation ◽  
Acute Myeloid

Clonal evolution of NPM1 gene mutation in relapsed normal karyotype acute myeloid leukemia

2011 ◽  
Vol 35 (6) ◽  
pp. e71-e72 ◽  
Author(s):  
Borae G. Park ◽  
Hyun-Sook Chi ◽  
Seongsoo Jang ◽  
Chan-Jeoung Park ◽  
Jung-Hee Lee
Keyword(s):  
Acute Myeloid Leukemia ◽  
Gene Mutation ◽  
Myeloid Leukemia ◽  
Clonal Evolution ◽  
Normal Karyotype ◽  
Acute Myeloid

Poor Prognosis of Adult Acute Myeloid Leukemia (AML) with High Level of Evi1 and BAALC Transcript.

Blood ◽  
2004 ◽  
Vol 104 (11) ◽  
pp. 2994-2994
Author(s):  
Valeria Biggio ◽  
Selim Corm ◽  
Hugues Leroy ◽  
Stephane De Botton ◽  
Christophe Roumier ◽  
...  
Keyword(s):  
Overall Survival ◽  
Acute Myeloid Leukemia ◽  
Molecular Markers ◽  
Myeloid Leukemia ◽  
Remission Rate ◽  
Prognostic Significance ◽  
Normal Karyotype ◽  
High Expression ◽  
Fab Classification ◽  
Acute Myeloid

Abstract Cytogenetics remain the most powerful prognostic factor in acute myeloid leukemia (AML). However, 50–60 % of those patients (pts) are included in intermediate or unknown karyotypic risk groups. Molecular markers might improve risk classification and recently, 2 groups have reported that the expression of BAALC and EVI1 might be associated with a poor outcome, especially in pts with normal karyotype (Blood.2003;102:1613; Blood2003;101:837). Thus, we retrospectively analyzed the prognostic significance of the expressions level of these genes, by real time quantitative PCR (RQ-PCR) in AML. Patients and methods: 189 adult pts were analyzed: median age was 49 years (range, 19-65), median WBC counts 19 Giga/L (range, 0-602). FAB classification was: M0=22, M1=41,M2=44,M4=37,M5=26,M6=7,M7=1 and unclassified =11. Karyotype was prognostically favorable (n=28), intermediate (n=115, including 80 normal), unfavorable (n=39) and unknown (n=7). All pts received anthracycline-AraC chemotherapy according to French ALFA group multicenter trials (Castaigne et al, Blood 2004; May 13, Epub ahead of print). Complete remission rate was 83 %, median overall survival: 22 months, range 0.1 to 123. RQ-PCR was performed according to the 2 previous paper recommendations. However the housekeeping gene used in this work was TBP (TF2D). Results were expressed using ΔCt method. High levels of EVI1 were defined by ΔCt lower than 11. BAALC (+) pts and (−) pts were defined by ΔCt value lower or higher than 2.45 (ie the median ΔCt for BAALC expression). Results: 24/189 (13%) pts had high expression of EVI1. By comparison to pts without high EVI1 expression, pretreatment variables other than karyotype (including age, WBC counts, FAB classification) were similar in pts with high EVI1 expression. Patients with high EVI1 expression had significantly worse karyotype: none had favorable karyotype, only 4 (17%) had 3q26 abnormalities ((associated with other adverse abnormalities in 3 cases (i.e. -7/7q-)), 3 had 11q23 abnormalities and 9/24 (37.5%) pts normal karyotype. No significant diferencies between pts with high and low EVI1 expression was found for CR rates and DFS, but high EVI1 expression was associated with poorer overall survival ( median:11.7 months versus 26.9 months; p=0.0372). No pretreatment parameters, including karyotype, differed between BAALC (+) (ie pts with BAALC expression lower than the ΔCt median value) and BAALC (−) pts (ie pts with expression greater than the ΔCt median value). Overall CR rate, DFS, OS were similar in BAALC (+) and BAALC (−) pts. However, in the intermediate cytogenetic subgroup (n=115 pts), BAALC (+) pts had lower median DFS (9.7 months versus 19.8 months; p=0.0316) and EFS (4.1 months versus 11.8 months; p=0.0027) than BAALC (−) pts and a trend for poorer OS:16 months versus 27 months (p=0.07). In conclusion: In adult AML patients, high expression of EVI and BAALC are associated with poorer outcome. Determination at diagnosis of the level of those two genes could be helpful for treatment adjustment, especially in the intermediate cytogenetic subgroup. Correlation between EVI1 and BAALC results and those of other molecular markers (CEBPA, RAS, FLT3) mutations will be presented.

FLT3 Internal Tandem Duplication in Acute Myeloid Leukemia with Normal Karyotype

2007 ◽  
Vol 42 (3) ◽  
pp. 250 ◽  
Author(s):  
Sang-Ho Kim ◽  
Yeo-Kyeoung Kim ◽  
Il-Kwon Lee ◽  
Deog-Yeon Jo ◽  
Jong-Ho Won ◽  
...  
Keyword(s):  
Acute Myeloid Leukemia ◽  
Myeloid Leukemia ◽  
Tandem Duplication ◽  
Normal Karyotype ◽  
Internal Tandem Duplication ◽  
Flt3 Internal Tandem Duplication ◽  
Acute Myeloid

Normal karyotype acute myeloid leukemia with the CD7+ CD15+ CD34+ HLA-DR + immunophenotype is a clinically distinct entity with a favorable outcome

2014 ◽  
Vol 93 (6) ◽  
pp. 957-963 ◽  
Author(s):  
Noriyoshi Iriyama ◽  
Norio Asou ◽  
Yasushi Miyazaki ◽  
Shunichiro Yamaguchi ◽  
Shinya Sato ◽  
...  
Keyword(s):  
Acute Myeloid Leukemia ◽  
Myeloid Leukemia ◽  
Normal Karyotype ◽  
Favorable Outcome ◽  
Distinct Entity ◽  
Hla Dr ◽  
Acute Myeloid

FLT3 mutations have no prognostic impact in elderly patients with acute myeloid leukemia and normal karyotype

2009 ◽  
Vol 84 (8) ◽  
pp. 532-534 ◽  
Author(s):  
Felicetto Ferrara ◽  
Clelia Criscuolo ◽  
Cira Riccardi ◽  
Tiziana Izzo ◽  
Mariangela Pedata ◽  
...  
Keyword(s):  
Acute Myeloid Leukemia ◽  
Elderly Patients ◽  
Myeloid Leukemia ◽  
Normal Karyotype ◽  
Prognostic Impact ◽  
Flt3 Mutations ◽  
Acute Myeloid

scholarly journals BCOR Mutations in Acute Myeloid Leukemia: Clonal Evolution and Prognosis

Blood ◽  
2020 ◽  
Vol 136 (Supplement 1) ◽  
pp. 4-4
Author(s):  
Ashley Zhang ◽  
Yuntao Liu ◽  
Shuning Wei ◽  
Benfa Gong ◽  
Chunlin Zhou ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Acute Myeloid Leukemia ◽  
Risk Stratification ◽  
Myeloid Leukemia ◽  
Statistical Difference ◽  
Tp53 Mutation ◽  
Clonal Evolution ◽  
Normal Karyotype ◽  
Abnormal Karyotype ◽  
Acute Myeloid

Background BCOR gene is a transcription repressor that may influence normal hematopoiesis and is associated with poor prognosis in acute myeloid leukemia (AML) with normal karyotype. However, due to the rare mutation frequency in AML (3.8%-5%), clinical characteristics and prognosis of AML patients with BCOR mutation including abnormal karyotype are still unknown. In addition, the clonal evolution of AML patients with BCOR mutation has not been fully investigated. Methods By means of next generation of sequencing, we performed sequencing of 114 genes related to hematological diseases including BCOR on 509 newly diagnosed AML patients (except for acute promyelocytic leukemia) from March 2017 to April 2019. The 2017 European Leukemia Net (ELN) genetic risk stratification was used to evaluate prognosis. Overall survival (OS) was defined as the time from diagnosis to death or last follow-up. Relapse-free survival (RFS) was measured from remission to relapse or death. Clonal evolution was investigated through analyzing bone marrow samples at diagnosis, complete remission (CR) and relapse from the same patient. Result Among 509 AML patients, we found BCOR mutations in 23 patients (4.5%). BCOR mutations were enriched in patients with mutations of RUNX1 (p = 0.008) and BCORL1 (p = 0.0003). Patients with BCOR mutation were more at adverse ELN risk category compared to patients without BCOR mutation (p = 0.007). Besides, there was a larger proportion of patients with normal karyotype in BCOR mutation group but it had not reached statistical difference (62.5% vs 45.5%, p = 0.064). The abnormal karyotype in patients with BCOR mutations included trisomy 8, t(9;11), inv(3), -7 and complex karyotype.There were no significant differences in age, sex, white blood cell count, hemoglobin or platelet count between the two groups. More patients died during induction (13.0% vs 3.5%, p = 0.56) and fewer patients achieved CR after 2 cycles of chemotherapy when patients had BCOR mutations (69.6% vs 82.5%, p = 0.115) but the difference had not reached statistical difference . Patients with BCOR mutations had inferior 2-year OS (52.1% vs 70.7%, p = 0.0094) and 2-year RFS (29.8% vs 61.1%, p = 0.0090). After adjustment for ELN risk stratification, BCOR mutation was still remain a poor prognostic factor. However, the adverse prognostic impact of BCOR mutation is overcome by hematopoietic stem cell transplantation (HSCT), in which there was no difference between BCOR mutation group and wild type group (p = 0.474) (Figure 1). Through analysis of paired bone marrow sample at diagnosis, remission and relapse, we revealed the clonal evolution that BCOR mutation was only detected at diagnosis sample as a subclone and diminished at CR and relapse while TP53 mutation was only detected at relapse with a variant allele frequency (VAF) of 25.5%. We also found BCOR mutation at another patient's diagnosis and relapse sample while TP53 mutation was detected at relapse with VAF of 11.8%. Conclusion BCOR is associated with RUNX1 mutation and higher ELN risk. AML patients with BCOR mutation including normal and abnormal karyotype conferred a worse impact on OS that can be overcome by HSCT. BCOR mutation is a subclone at diagnosis or relapse in some patients, in which TP53 mutation clone occurred at relapse. Disclosures No relevant conflicts of interest to declare.

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