Survival and Prognostic Factors in Adults Acute Myeloid Leukemia: A Retrospective Analysis of 119 Cases

Background: Acute myeloid leukemia (AML) is a malignant disease with significant identified prognostic factors. Therefore our aim was to develop an Assessment Scheme of Prognosis in AML based on prognostic factors. In some counties, such as Romania or other less-highly developed countries, this scheme would be beneficial particularly when cytogenetic testing is unavailable or time-intensive. Methods: We analyzed 119 adult patients with AML during a five year-period from a single-center in Romania. We retrospectively collected and analyzed data with Epi Info and Excel using patient medical records. Results: According to age, the group A1 (<60 years) had a 40 months survival, in contrast with the group B1 (≥60 years) with a survival of 19 months (p=0,0063). The group A2 (secondary AML) survived 15 months, whereas the group B2 (AML de novo) survived 40 months (p=0.0021). Additionally, the group A3 (mild comorbidities) achieved a 40 months survival, the group B3 (moderate comorbidities) survived 19 months, whereas the group C3 (severe comorbidities) survived 7 months (p=0,0059). According to WBC and blast number, the group A4 (high levels) had a 25 months survival, whereas the group B4 (low levels) survived 40 months (p=0,0057). Conclusion: The prognostic factors studied are useful to identify the risk level of AML disease for each patient at diagnosis. We developed an assessment scheme of prognosis with three risk groups according to age, secondary AML, comorbidity, WBC and blasts and cytogenetic examination.

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Overexpression of the major vault transporter protein lung-resistance protein predicts treatment outcome in acute myeloid leukemia

Blood ◽

10.1182/blood.v87.6.2464.bloodjournal8762464 ◽

1996 ◽

Vol 87 (6) ◽

pp. 2464-2469 ◽

Cited By ~ 165

Author(s):

AF List ◽

CS Spier ◽

TM Grogan ◽

C Johnson ◽

DJ Roe ◽

...

Keyword(s):

Acute Myeloid Leukemia ◽

Myeloid Leukemia ◽

De Novo ◽

Prognostic Significance ◽

Secondary Aml ◽

Lung Resistance Protein ◽

Transporter Protein ◽

Lung Resistance ◽

Resistance Protein ◽

Acute Myeloid

The monoclonal antibody LRP56 recognizes a 110-kD major vault protein (lung-resistance protein [LRP]) overexpressed in several P-glycoprotein- negative (Pgp-), multidrug resistant tumor cell lines. To determine the frequency of LRP overexpression, its prognostic significance, and its relation to Pgp, we analyzed bone marrow specimens from 87 consecutive patients with acute leukemia. Diagnoses included de novo acute myeloid leukemia (AML; 21 patients), leukemia arising from an antecedent hematologic disorder or prior cytotoxic therapy (secondary AML; 27 patients), AML in relapse (29 patients), and blast phase of chronic myeloid leukemia (CML-BP; 10 patients). A granular cytoplasmic staining pattern was detected by immunocytochemistry in 32 (37%) cases, including 7 (33%) de novo AML, 13 (48%) secondary AML, 11 (38%) relapsed AML, and 1 of 10 CML-BP. Among 66 evaluable patients with AML, LRP overexpression was associated with an inferior response to induction chemotherapy (P = .0017). Remissions were achieved in 35% of LRP+ patients as compared with 68% of LRP- patients. Although Pgp adversely affected response in univariate analysis (P = .0414), only LRP had independent prognostic significance when compared in a logistic regression model (P = .0046). Differences in remission duration (P = .075) and overall survival (P = .058) approached significance only for LRP. Sequential specimens from remitting patients receiving treatment with the Pgp modulator cyclosporin-A showed emergence of the LRP phenotype despite a decrease or loss of Pgp at the time of treatment failure (P =.0304). Significant associations were observed between LRP and age greater than 55 years (P = .017), Pgp (P = .040), and prior treatment with mitoxantrone (P = .020) but not with CD34. These findings indicate that overexpression of the novel transporter protein LRP is an important predictor of treatment outcome in AML.

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Priming with Granulocyte-Colony Stimulating Factor Did Not Improve Outcome in a Randomized Study of Elderly Acute Myeloid Leukemia but Increased Induction Mortality.

Blood ◽

10.1182/blood.v108.11.1980.1980 ◽

2006 ◽

Vol 108 (11) ◽

pp. 1980-1980 ◽

Cited By ~ 2

Author(s):

Gesine Bug ◽

Steffen Koschmieder ◽

Juergen Krauter ◽

Stefanie Wiebe ◽

Carla Hannig ◽

...

Keyword(s):

Acute Myeloid Leukemia ◽

Myeloid Leukemia ◽

De Novo ◽

Randomized Study ◽

Granulocyte Colony Stimulating Factor ◽

Colony Stimulating Factor ◽

Secondary Aml ◽

To Receive ◽

Stimulating Factor ◽

Acute Myeloid

Abstract Introduction: In acute myeloid leukemia (AML), granulocyte-colony stimulating factor (G-CSF) has been used in combination with induction chemotherapy to improve complete remission rates (CR) by sensitization of leukemic cells. This randomized prospective oligocenter study was designed to assess whether two induction cycles given simultaneously with and followed by G-CSF (G-CSFpriming) was superior to G-CSF administered only after induction (G-CSFpost) with regard to CR and disease-free survival (DFS) in patients older than 60 years. Secondary objectives were comparison of this concept in de novo versus secondary AML and to examine the feasibility of autologous stem cell transplantation (ASCT) as late consolidation. Methods: Overall, 183 eligible pts (median age 67 yrs) were randomly assigned to receive G-CSF starting on the day before (n=91) or after chemotherapy (n=92) during two induction cycles consisting of idarubicin, cytarabine and etoposide (IdAV). The two treatment groups were evenly matched with respect to age, diagnosis and cytogenetic risk factors. G-CSF was given as daily s.c. injection at 5μg/kg. Pts achieving a CR were scheduled to receive early consolidation chemotherapy with fludarabine, cytarabine, idarubicin plus G-CSF (mini-FlagIda) and peripheral blood stem cell (PBSC) harvest, followed by ASCT as late consolidation. Pts lacking PBSC due to mobilization failure were optionally treated with a second cycle of mini-FlagIda as late consolidation. Results: After induction chemotherapy, 118 out of 183 pts (64%) achieved CR. Response was not different in the G-CSFpost vs. G-CSFpriming group (70% vs. 59%, p=0.148). Recovery of neutrophils was similar in both groups after cycle 1 (21.8 vs. 20.5 days) and cycle 2 (14.9 vs. 16.3 days). Notably, G-CSF priming resulted in a significantly increased mortality in induction 1 (25% vs. 9%, p=0.003) associated with a higher rate of severe mucositis and infectious complications. The probability of OS and DFS at 5 years was 16% and 20%, resp., with no significant differences between the induction groups. With a median follow up of 26 months (range, 5–77), 77 out of 118 complete responders have relapsed and 7 died while in CR. Patients with de novo AML had a significantly better OS than those with secondary AML (17 vs. 11 months, p<0.001). Unfavorable cytogenetics were associated with a poor median OS (7 vs. 15 months, p<0.001). Following mini-FlagIda I, collection of at least 2x10E6 CD34+ PBSC/kg was feasible in 35 of 67 pts in whom mobilization of CD34+ cells was monitored. Late consolidation with ASCT (n=19) was not superior to mini-FlagIda II (n=16, DFS 24 vs. 27 months). Conclusions: In this randomized study with elderly AML patients, G-CSF priming did not result in an increased CR rate and was associated with higher induction mortality, but OS was not influenced. We demonstrated feasibility of ASCT in patients up to the age of 70 years, which was not superior to chemotherapy consolidation.

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The Size of the Dendritic Cell Population At Diagnosis Worsens Prognosis in Acute Myeloid Leukemia – Bigger Is Not Better

Blood ◽

10.1182/blood.v118.21.4870.4870 ◽

2011 ◽

Vol 118 (21) ◽

pp. 4870-4870

Author(s):

Marta I Pereira ◽

Ana I Espadana ◽

Emília Cortesão ◽

Gilberto P Marques ◽

Catarina Geraldes ◽

...

Keyword(s):

Acute Myeloid Leukemia ◽

Myeloid Leukemia ◽

De Novo ◽

World Health ◽

Biological Behavior ◽

Newly Diagnosed ◽

Secondary Aml ◽

De Novo Aml ◽

Dc Component ◽

Acute Myeloid

Abstract Abstract 4870 Background: Dendritic cells (DC) are a heterogeneous population of lineage-negative antigen-presenting cells derived from CD34+ hematopoietic progenitors, present in tissue, blood and bone marrow (BM), where plasmacytoid DC (pDC) are a normal finding, representing 0.2 ± 0.1% of cell populations (Matarraz et al, 2010). DC neoplasms include solid tumors (such as DC sarcomas) and an entity classified by the World Health Organization (2008) as an acute myeloid leukemia (AML)-related precursor neoplasm: blastic pDC neoplasm/leukemia, an aggressive disease with poor prognosis, with no clinical trials to orient consensus regarding the most effective treatment; it is usually chemo-resistant, although some cases respond to AML-like regimens and allogeneic hematopoietic stem cell transplant. It is not clear if the presence of an increased DC population in non-DC AML confers pDC neoplasm-like biological characteristics to the former. Aims: This study aims to evaluate whether an increase in the size of DC populations in newly-diagnosed non-DC AML affects the latter's biological behavior, as represented by the overall survival (OS) of patients with the disease. Methods: We reviewed all AML diagnosed in our Hospital between January 1st 2008 and December 31st 2010, identifying 146 patients. We excluded 9 patients who had no flow cytometry immunophenotyping (IP) performed, and 7 whose first IP was performed after treatment was instituted. In that time frame, we also diagnosed 4 pDC neoplasms. Of the 130 patients included, 91 had their presenting IP performed on BM aspirate, while the remaining 39 were phenotyped on blood samples. The size of the DC populations and blastic DC maturation were determined on these samples. Patients were classified into 2 groups according to the size of the DC component; one (the Non-DC Group) had a DC component of up to 0.3% (in practice, the highest value in this group was 0.2%); the other (DC Group) had a percentage over this limit (the lowest value being 1.0%). OS data was determined for both groups; special consideration was given to age strata, separating patients under 65 years of age (Under-65) from those 65 or older (Over-65) and etiology (distinguishing de novo AML from AML secondary to therapy, myelodysplasia or myeloproliferative diseases). The percentage of DC identified by IP did not influence nor alter the type of treatment instituted. Results: We found that the presence of a DC component above the normal BM interval (as determined by Matarraz et al) was associated with a significantly decreased OS, with patients with DC components over 0.3% presenting with a median OS of 2.4 months (mean: 6.4 ± 1.6) and those with a component under 0.3% with a median OS of 8.6 months (mean: 17.0 ± 1.9) (p = 0.033). In our series, patients Over-65 had a median OS of 2.9 months (mean = 6.9 ± 1.0) and those Under-65 a median of 21.3 months (mean = 22.5 ± 2.5), p < 0.001. The differences in OS according to DC component were attenuated in patients Over-65 (median = 1.8 vs. 3.9 months, p = NS), whereas in patients Under-65 the median survival was 2.7 months (mean: 8.7 ± 2.9) for the DC Group and 24.4 months (mean: 24.3 ± 2.7) for the non-DC Group (p = 0.035). The differences in OS were also significant for de novo AML (median = 2.4 vs. 16.0 months, mean = 4.7 ± 1.9 vs. 20.5 ± 2.6, p = 0.017), but not statistically relevant for secondary AML (median = 4.4 vs. 5.5 months, mean = 8.4 vs. 10.8, p = NS). Discussion: In this study, we found that an increase in the size of the DC component as determined by IP at diagnosis on newly-diagnosed AML had a negative impact on prognosis, with a significant decrease in median and mean OS in patients with a percentage of DC over the upper limit of the normal interval. We also determined that the decreased survival was primarily attributed to the better-prognosis groups (patients under 65 and with de novo AML), whereas the effect of the worsened prognosis was attenuated in those patients with a bad prognosis at the outset (patients over 65 and with secondary AML). If data from DC neoplasms could be extrapolated, we could suggest that AML with increased DC components are less chemo-sensitive, which would explain the OS differences found in the Under-65 group, as well as the no-difference found in the Over-65 Group, which is frequently undertreated due to comorbidities. Conclusion: Our study suggests that the size of the DC component at diagnosis as determined by IP is a new prognostic marker predictive of decreased survival. Disclosures: No relevant conflicts of interest to declare.

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Risk factors affect accurate prognosis in ASXL1-mutated acute myeloid leukemia

Cancer Cell International ◽

10.1186/s12935-021-02233-y ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Yi Fan ◽

Linxiao Liao ◽

Yajun Liu ◽

Zhenzhen Wu ◽

Chong Wang ◽

...

Keyword(s):

Risk Factors ◽

Acute Myeloid Leukemia ◽

Prognostic Factors ◽

Myeloid Leukemia ◽

De Novo ◽

Primary Data ◽

Hematopoietic Stem ◽

Mutational Spectrum ◽

Double Hit ◽

Acute Myeloid

Abstract Background The epigenetic regulator additional sex combs-like 1 (ASXL1) is an adverse prognostic factor in acute myeloid leukemia (AML). However, the mutational spectrum and prognostic factors of ASXL1-mutated (ASXL1+) AML are largely unknown. We aim to evaluate the risk factors influencing the prognosis of ASXL1+ AML. Methods We performed next-generation sequencing (NGS) in 1047 cases of de novo AML and discovered 91 ASXL1+ AML (8.7%). The Log-Rank test and Kaplan-Meier were used to evaluate survival rate, and the Cox regression model was used to analyze multivariate analysis. Results In a total of 91 ASXL1+ AML, 86% had one or more co-mutations. The factors that had adverse impact on overall survival (OS) and event-free survival (EFS) are defined as high risk factors, including age ≥ 60 years, WBC count ≥ 50 × 109/L, FLT3-ITD mutations, RUNX1 mutations, and absence of AML1-ETO fusion gene. ASXL1 mutations without any risk factor were classified as single-hit ASXL1+ AML; ASXL1 mutations accompanied with one of the risk factors was referred to as double-hit ASXL1+ AML; ASXL1 mutations with two or more of the risk factors were designated as triple-hit ASXL1+ AML. The combination of these risk factors had a negative influence on the prognosis of ASXL1+ AML. The median OS was not attained in single-hit ASXL1+ AML, 29.53 months in double-hit ASXL1+ AML, and 6.67 months in triple-hit ASXL1+ AML (P = 0.003). The median EFS was not attained in single-hit ASXL1+ AML, 29.53 months in double-hit ASXL1+ AML, and 5.47 months in triple-hit ASXL1+ AML (P = 0.002). Allogenic hematopoietic stem cell transplantation (allo-HSCT) improved the prognosis of double/triple-hit ASXL1+ AML patients. Conclusions Our study provided new insights into the mutational spectrum and prognostic factors of ASXL1+ AML patients. Our primary data suggest that the risk factors in ASXL1+ AML contribute to the poor outcome of these patients. The management of ASXL1+ AML patients should be based on the risk factors and allo-HSCT is highly recommended for consolidation.

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Priming with Granulocyte Colony-Stimulating Factor (G-CSF) Has No Impact on Treatment Outcome but Impairs Mobilization of Peripheral Blood Stem Cells (PBSC) in Elderly Patients with Acute Myeloid Leukemia: Results of a Randomized Oligocenter Trial.

Blood ◽

10.1182/blood.v104.11.867.867 ◽

2004 ◽

Vol 104 (11) ◽

pp. 867-867

Author(s):

Gesine Bug ◽

Steffen Koschmieder ◽

S. Wiebe ◽

Gerd Heil ◽

Carla Delfs ◽

...

Keyword(s):

Acute Myeloid Leukemia ◽

Treatment Outcome ◽

Elderly Patients ◽

Induction Chemotherapy ◽

Myeloid Leukemia ◽

De Novo ◽

Secondary Aml ◽

Remission Duration ◽

Cd34 Cells ◽

Acute Myeloid

Abstract Treatment of elderly patients with acute myeloid leukemia (AML) is characterized by a low complete remission (CR) rate of less than 50% and short remission duration with a median disease-free survival (DFS) of less than one year (Rowe et al., Blood 2004). Sensitization of leukemic cells with growth factors may enhance the efficacy of chemotherapy in AML patients. Aims of this randomized prospective, oligocenter study were 1) to assess whether induction chemotherapy given simultaneously with and followed by G-CSF (G-CSFpriming) was superior to G-CSF following induction (G-CSFpost) with regard to CR rate and DFS in pts aged older than 60 yrs with previously untreated de novo and secondary AML and 2) to examine the feasibility of an early consolidation therapy followed by autologous stem cell transplantation (ASCT) as late consolidation. Between 01/00 and 04/04, a total of 116 eligible patients (median age 67 yrs) were randomly assigned to receive G-CSFpriming (n=57) or G-CSFpost (n=59) during two remission-induction cycles consisting of idarubicin, cytarabine and etoposide (IdAV) with daily application of 5μg/kg G-CSF (Neupogen®, Amgen). Pts achieving a CR received early consolidation using fludarabine, cytarabine, idarubicin, G-CSF (mini-FlagIda) and PBSC harvest, followed by ASCT. Pts lacking PBSC due to mobilization failure were optionally treated with a second cycle of mini-FlagIda. After induction chemotherapy, 74 out of 116 pts (63.8%) achieved CR. Response was not significantly different in the G-CSFpost vs. G-CSFpriming group (67.8 vs. 59.6%), nor was recovery of neutrophils. Of 74 complete responders, 44 have relapsed and 3 died in CR. Median remission duration was 15.2 and 14.7 months in the G-CSFpost and G-CSFpriming group, resp. Median DFS was 16.5 months and the probability of DFS at 4 yrs 21.2%, with no significant difference between the treatment groups and a median follow-up of 22 months at the time of this interim analysis. Mini-FlagIda consolidation was administered to 51 out of 74 CR patients (68.9%). The number of circulating CD34+ cells was monitored in 43 patients. The probability of mobilizing at least 1x106/kg CD34+ cells was significantly lower in the G-CSFpriming compared to the G-CSFpost group with 29.4% (5/17 pts) and 59.2% (16/26 pts), resp (p<0.05). ASCT was performed in 10 pts resulting in a significantly better 4-yr DFS (55%) compared to 10 pts treated with a second course of mini-FlagIda (22%, p<0.05). The major reason for not being autografted in spite of efficient collecting of CD34+ cells was early relapse. Conclusion: In elderly pts with de novo or secondary AML, G-CSF priming did not enhance the antileukemic efficacy of induction chemotherapy and had no significant impact on overall treatment outcome compared with G-CSF administered after induction. As ASCT proved to be an effective consolidation modality for CR patients mobilizing sufficient amounts of CD34+ cells, the detrimental effect of G-CSF priming on the collection of PBSC is clinically relevant.>

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Results of Acute Myeloid Leukemia Treated with Triple-Drug Regimen Based on HA as Induction Chemotherapy and Its Relationship with Karyotype.

Blood ◽

10.1182/blood.v106.11.4595.4595 ◽

2005 ◽

Vol 106 (11) ◽

pp. 4595-4595

Author(s):

Jianxiang Wang ◽

Yingchang Mi ◽

Yangping Xue ◽

Wenjuan Yu ◽

Shougeng Bian

Keyword(s):

Acute Myeloid Leukemia ◽

Myeloid Leukemia ◽

De Novo ◽

Disease Free Survival ◽

Risk Groups ◽

Drug Regimen ◽

Free Survival ◽

Intermediate Group ◽

Favorable Group ◽

Acute Myeloid

Abstract 243 untreated de novo acute myeloid leukemia (AML) patients were treated with (homoharringtonine+AraC, HA) based induction therapy which composing of three chemotherapeutic drugs (HAD, HAM, HAA, HAE) in our hospital for recent 12 years. Complete remission (CR) rate, disease free survival (DFS) and overall survival (OS) of the patients were calculated. 184 patients who had karyotype results were divided into four groups according to SWOG (Southwestern Oncology Group) criteria. Differences of CR rate, DFS and OS of different groups were evaluated. The CR rate of all 243 cases was 77.4%, and 94.6% out of them were for 1~2 courses. Median DFS of the 188 CR patients was 28.5 (range from 1.0 to 153) months. DFS rates at 3 years and 5 years were 45.4%, 40.2% respectively. The median OS of 243 patients was 18.4 (range from 0.5 to 154) months. OS rates at 3 years and 5 years were 36.9%, 31.4% respectively. CR rate, DFS and OS of the different cytogenetic risk groups were also be analyzed. According to SWOG criteria, patients were classified into favorable, intermediate, adverse and unknown groups. CR rate, median DFS and OS were 97.8%, 87.4 months and 89.0 months in favorable group; 81.9%, 17.6 months and 22.3 months in intermediate group; 61.5%, 9 months and 11.5 months in the adverse group; 79.3%, 29.0 months, 19.9 months in the unknown group, respectively. The differences among the four groups were statistically significant. Multivariates analyses confirmed contribution of cytogenetics and courses of post-remission chemotherapy to DFS and OS. If we incorporated unknown group into the intermediate group, the CR rate is 80.6%. DFS rates at 3 years and 5 years were 40.5%, 38.1% respectively. OS rates at 3 years and 5 years were 40.3%, 37.4% respectively. We conclude triple-drugs induction regimens based on HA are highly effective in adult AML in China. Cytogenetics is the important prognostic factor. SWOG karyotype subtyping criteria is appropriate to our patients and unknown group can be incorporated into the intermediate group.

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Clinico-Biological Characteristics and Prognosis of Non-M3 Acute Myeloid Leukemia with High Percentage of Myeloperoxisase Positive Blasts. Single Center Experience.

Blood ◽

10.1182/blood.v108.11.4462.4462 ◽

2006 ◽

Vol 108 (11) ◽

pp. 4462-4462

Author(s):

Pau Montesinos ◽

Lorenzo Algarra ◽

Jaime Sanz ◽

Mari Luz Perez ◽

Leonor Senent ◽

...

Keyword(s):

Acute Myeloid Leukemia ◽

Multivariate Analysis ◽

Prognostic Factors ◽

Myeloid Leukemia ◽

De Novo ◽

Disease Free Survival ◽

Favourable Outcome ◽

Biological Characteristics ◽

Prognostic Impact ◽

Acute Myeloid

Abstract Introduction: It has been suggested that acute myeloid leukemia (AML) showing mature phenotype is associated with favourable outcome. In a study recently published by JALSG, myeloperoxidase (MPO) positivity in over 50% of blasts had favourable prognostic impact, independent from karyotype, on achieving complete remission (CR), overall survival (OS) and disease free survival (DFS). No other studies have established the independent prognostic value of MPO expression. Objectives: Analyze the clinico-biological characteristics of AML with high percentage of MPO+ blasts and its impact on CR, OS and DFS. Material and methods: Between 1986 and 2005, 418 adult patients (median 53 years, range 15–80) were diagnosed with de novo non-APL AML and evaluated for percentage of MPO+ blasts. All patients received intensive chemotherapy. Diagnosis was made by optic microscopy of bone marrow (BM) aspirates stained with May-Grumwald giemsa, MPO, butyrate esterase and or non specific esterase. Cytogenetic and immunophenotype analysis was evaluated in 66% and in 76% of the cases respectively. Results: 118 patients (28%) showed a percentage of MPO+ blasts >75%. AML with MPO+ blasts >75% was associated with M1-M2-M4 subtypes, leucocytes >50×109/L, blasts in BM >70% and HLA-DR negativity (p<0.01). It was also significantly associated with favourable karyotype (11% vs 3% favourable, 52% vs 48% intermediate and 3% vs 15% unfavourable). Patients with AML and MPO+ blasts >75% obtained higher CR rate (71% vs 55%), due to less resistant disease (9% vs 22%, p<0.01). In multivariate analysis favourable karyotype, leukocytes <50×109/L and age <60 were favourable prognostic factors for CR. Median OS and DFS was higher in patients with AML and MPO+ blasts >75% (15 vs 7 months, p<0.001, y 41 vs 12 months, p<0.001, respectively). ). In multivariate analysis, favourable karyotype, leukocytes <50×109/L, age <60 years and MPO+ >50% were favourable prognostic factors for OS; and age <60 and MPO+ >75% were the only independent factors for DFS. Median DFS was higher in patients with AML and MPO+ blasts >75% in the intermediate cytogenetic risk group (59 vs 13 months, p=0.015), age <60 (109 vs 15 months, p=0.003), age >60 (13 vs 7 months, p=0.03), autologous stem cell transplantation (100 vs 9 months, p=0.04) and chemotherapy alone (16 vs 8 months, p=0.003). Conclusion: In our series, patients with AML and MPO+ blasts >75% show less chemoresistant disease and a longer remission duration, the latter independently from the karyotype. This biological characteristic could be useful in designing therapeutic strategies in patients that lack other prognostic markers.

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Clinical Implications of Reticulin Fibrosis of Bone Marrow in De Novo Acute Myeloid Leukemia.

Blood ◽

10.1182/blood.v120.21.2585.2585 ◽

2012 ◽

Vol 120 (21) ◽

pp. 2585-2585

Author(s):

Tzung-Chih Tang ◽

Hung Chang ◽

Chien-Feng Sun ◽

Lee-Yung Shih ◽

Po Dunn ◽

...

Keyword(s):

Bone Marrow ◽

Acute Myeloid Leukemia ◽

Induction Chemotherapy ◽

Myeloid Leukemia ◽

De Novo ◽

Risk Groups ◽

Prognostic Impact ◽

Recovery Duration ◽

De Novo Aml ◽

Acute Myeloid

Abstract Abstract 2585 Background: Microenvironment of bone marrow (BM) plays an important role to support proliferation, renewal and differentiation of hematopoietic stem cells. Whether the stroma of BM affects leukemic cells with the same manner, or impacts on the prognosis in leukemia patients, has not been fully investigated. Previous studies have described that increased reticulin content in the BM is associated with poor outcome in patients with acute lymphoblastic leukemia, chronic myeloid leukemia and primary myelofibrosis, but there is no cohort study to determine the clinical correlation between degree of reticulin fibrosis of BM and acute myeloid leukemia (AML). To investigate prognostic impact of reticulin fibrosis on de novo AML, 881 patients diagnosed between Jun 1999 to Dec 2011 in Chang Gung Memorial Hospital and treated with anthracycline-containing induction chemotherapy were retrospectively reviewed. Patients and methods: According to the grading of reticulin content in the bone marrow, we categorized the 881 patients into four groups: A. BM easily aspirated without biopsy, n = 698; B. Reticulin grade 0, n = 99; C. Reticulin grade 1–2, n = 51; D. Reticulin grade 3–4, n = 33. The induction failure (IF) rate after treatment with induction chemotherapy, the recovery duration of absolute neutrophil count (ANC) greater than 0.5 × 109/L in patients who achieved the first complete remission, the overall survival (OS) and relapse-free survival (RFS) in four groups were analyzed. Based on the cytogenetic or molecular features, 648 of the patients were stratified into unfavorable, intermediate and favorable risk groups, and the clinical significance of reticulin fibrosis of BM were also examined for various risk groups. Results: Of the 881 patients, the patients in group D had a statistically higher IF rate (P = 0.0108) and longer ANC recovery duration (P = 0.0008). But the OS and RFS between four groups were not significantly different (P = 0.5146 and 0.3853, respectively). After risk stratified by cytogenetic and molecular analysis, increased reticulin content of BM (group C or D) had an adverse impact on OS in the intermediate and favorable risk groups (P = 0.006 and 0.0215, respectively). Conclusion: Reticulin content of BM influences the IF rate and myeloid recovery for the patients of de novo AML, and affects OS in patients with intermediate or favorable risk factors. Disclosures: No relevant conflicts of interest to declare.

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Acute myeloid leukemia ontogeny is defined by distinct somatic mutations

Blood ◽

10.1182/blood-2014-11-610543 ◽

2015 ◽

Vol 125 (9) ◽

pp. 1367-1376 ◽

Cited By ~ 347

Author(s):

R. Coleman Lindsley ◽

Brenton G. Mar ◽

Emanuele Mazzola ◽

Peter V. Grauman ◽

Sarah Shareef ◽

...

Keyword(s):

Acute Myeloid Leukemia ◽

Myeloid Leukemia ◽

Somatic Mutations ◽

De Novo ◽

Clinical Heterogeneity ◽

Secondary Aml ◽

Key Points ◽

De Novo Aml ◽

Secondary Type ◽

Acute Myeloid

Key Points The presence of a mutation in SRSF2, SF3B1, U2AF1, ZRSR2, ASXL1, EZH2, BCOR, or STAG2 is highly specific for secondary AML. Secondary-type mutations define an s-AML–like disease within t-AML and elderly de novo AML that underlies clinical heterogeneity.

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Addition of Lomustine to Idarubicin and Cytarabine Improves the Outcome of Elderly Patients With De Novo Acute Myeloid Leukemia: A Report From the GOELAMS

Journal of Clinical Oncology ◽

10.1200/jco.2009.26.4648 ◽

2010 ◽

Vol 28 (18) ◽

pp. 3028-3034 ◽

Cited By ~ 24

Author(s):

Arnaud Pigneux ◽

Jean-Luc Harousseau ◽

Francis Witz ◽

Mathieu Sauvezie ◽

Marie-Christine Bene ◽

...

Keyword(s):

Overall Survival ◽

Acute Myeloid Leukemia ◽

Multivariate Analysis ◽

Prognostic Factors ◽

Elderly Patients ◽

Induction Therapy ◽

Myeloid Leukemia ◽

De Novo ◽

Group I ◽

Acute Myeloid

Purpose No significant improvement in treatment outcome has been seen in elderly patients with acute myeloid leukemia (AML) over the past 20 years. This retrospective analysis investigated the prognostic factors for complete remission (CR) and survival in older patients with AML. Patients and Methods The study involved 847 patients older than 60 years enrolled onto three trials carried out in France between 1995 and 2005. Induction therapy consisted of idarubicin (8 mg/m2, days 1 through 5) and cytarabine (100 mg/m2, days 1 through 7; group I, 339 patients) or the same drugs plus lomustine (200 mg/m2 orally on day 1; group II, 508 patients). Consolidation therapy consisted of anthracycline and cytarabine courses at lower doses, preceded or not by a first course of intermediate-dose cytarabine. Results The rate of CR was significantly higher in patients in group II compared with group I (68% v 58%; P = .002). The rate of toxic death was similar in the two groups. In multivariate analysis, two prognostic factors were linked to CR: nonadverse cytogenetic (P < .003) and addition of lomustine to induction chemotherapy (P = .002). Median overall survival was significantly improved in patients treated with lomustine (median and SE, 12.7 ± 2.2 months v 8.7 ± 2.7 months; P = .004). In multivariate analysis, five prognostic factors positively affected overall survival: addition of lomustine (P = .002), age ≤ 69 years (P < .001), Eastern Cooperative Oncology Group performance status lower than 2 (P = .002), French-American-British subgroup 1/2 (P = .02), and nonadverse cytogenetic (P < .001). Conclusion Lomustine improves the rate of CR and survival in elderly patients with de novo AML when added to standard induction therapy.

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