A Prognostic Score of Overall Survival In Adults with Acute Myeloid Leukemia

Blood ◽  
2010 ◽  
Vol 116 (21) ◽  
pp. 2730-2730
Author(s):  
Murtadha K. Al-Khabori ◽  
Gordon Guyatt ◽  
Mark D. Minden ◽  
Karen Yee ◽  
Vikas Gupta ◽  
...  
Keyword(s):  
Overall Survival ◽  
Acute Myeloid Leukemia ◽  
Myeloid Leukemia ◽  
Prognostic Score ◽  
Performance Status ◽  
Intermediate Risk ◽  
Good Discrimination ◽  
Prior Malignancy ◽  
Acute Myeloid ◽  
Deviance Residuals

Abstract Abstract 2730 Background: Acute myeloid leukemia (AML) is a malignant myeloid disorder with heterogeneous outcomes. A number of factors have been shown to be prognostic; age, white blood cell (WBC), prior malignancy, performance status (Eastern Cooperative Oncology Group; ECOG) and cytogenetics. Methods: We planned to develop and validate a prognostic score for the 5-year (y) overall survival (OS) of adults with AML receiving intensive induction chemotherapy. We used Cox model to estimate the regression coefficients and Kaplan-Meier to estimate the 5-y OS. We used Cox-Snell, Schoenfeld and deviance residuals for model diagnostics and bootstrap validation to estimate the performance measures; Harrell's concordance and deviance residuals. Results: We retrospectively analyzed 779 patients treated between 1998–2008, using a prospectively collected database. The median age was 58 y. Most patients had intermediate risk cytogenetics (61%) and good performance status (ECOG 0–1: 79%). The median follow up for the surviving patients was 26.7 months (95% CI 18.8–32.9 months). The 5-y OS was 26% (22- 30%). All variables were statistically significant in the multivariable Cox regression model; age (y) (Hazard Ratio, HR 1.02; 95% CI 1.018–1.034), WBC (1*10^9/L) (HR 1.004; 1.002–1.006), prior malignancy (HR 1.58; 1.26–2.00), ECOG (ECOG 2 HR 1.41; 1.06–1.88, ECOG 3–4 HR 9.99; 4.72–21.18) and cytogenetics (intermediate risk HR 2.49; 1.41–4.39, poor risk HR 4.74; 2.65–8.50). The score divided patients into four risk groups; good (n=47), intermediate (n=129), poor (n=198) and extremely poor (n=87). The estimated 5-y OS was 0.70 (95% CI: 0.53–0.81), 0.37 (0.28–0.46), 0.15 (0.10–0.21) and 0.03 (0.01–0.10) respectively. The model showed good discrimination with large differences between survival curves and good Harrell concordance of 0.69. It showed good calibration using Cox-Snell and deviance residuals. In the intermediate risk cytogenetic group, the model showed good discrimination with over 45% difference in 5-y OS between the good and extremely poor groups. Conclusions: Our study confirmed the prognostic impact of the 5 variables reported in the literature. Using these factors, we developed a score to predict long term OS that showed good discrimination and calibration. The score added further discrimination in the intermediate risk cytogenetic group. Prospective external validation of the score is needed. Disclosures: No relevant conflicts of interest to declare.

Patients with FLT3 Negative Acute Myeloid Leukemia and Normal Cytogenetic who Have the Combination Mutations (NPM1-/CEBPA-) Have Better Survival Than Patients Who Have the Combination Mutations (NPM1+/CEBPA+)

Blood ◽  
2011 ◽  
Vol 118 (21) ◽  
pp. 4874-4874
Author(s):  
Shamail Butt ◽  
Pascal Akl ◽  
Himanshu Bhardwaj ◽  
Samer A Srour ◽  
Terry Dunn ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Overall Survival ◽  
Acute Myeloid Leukemia ◽  
Mutation Analysis ◽  
Myeloid Leukemia ◽  
Risk Group ◽  
Intermediate Risk ◽  
Cebpa Mutations ◽  
Normal Cytogenetics ◽  
Acute Myeloid

Abstract Abstract 4874 Introduction: Acute Myeloid Leukemia (AML) is the most common type of acute leukemia in adults. About 50% of patients with AML have normal karyotype, and are categorized as intermediate risk group. However, the clinical behavior and response to treatment in this group is heterogeneous. As a result, there is strong interest in characterizing molecular genetic features in the intermediate-risk AML patients that might rectify their stratification risk. In this group, FLT3-ITD (Internal Tandem Duplication) and FLT3-TKD (Tyrosine Kinase Domain) mutations are known to confer unfavorable risk whereas NPM1 and CEBPA mutations are known to be favorable risk markers. The purpose of this study is to analyze the combination of NPM1 and CEBPA mutations in presence or absence of FLT3 mutations on prognosis of AML patients referred to the State's largest tertiary care center over a period of 10 years for the treatment of leukemia. Patients and Method: We performed a retrospective chart review of all patients with AML evaluated at University of Oklahoma Health Sciences Center between January 2000 and December 2010. Patient's age, gender, race, laboratory and clinical data as well as bone marrow biopsy and aspirate findings were reported. PCR and Fragment Analysis were conducted on all available DNA preserved bone marrow materials to test the FLT3, NPM1 and CEBPA mutations. For statistical analysis, Kaplan-Meyer curve was used. Results: A total of 239 patients were evaluated. Male to female ratio was 2/1. Median age at diagnosis was 46y. 21 out of the 239 patients were less than 18 year old. DNA samples were present on 132 patients and mutation analysis for FLT3, CEBPA and NPM1 was performed. Correlation between mutations and AML prognosis was determined. 67/132 (50.8 %) patients were categorized into intermediate risk group (majority of patients had normal cytogenetics). 14/67 (20.9%) pts were FLT3+ (FLT3-ITD or FLT3-TKD mutation). 17/67 (23.9%) were NPM1+. 7/67 (10.4%) were CEBPA +. Kaplan-Meier curve was used to identify cumulative proportion surviving over time. FLT3 presence or absence itself was not identified to be statistically significant (p 0.416) in terms of overall survival. Interestingly, presence or absence of combined NPM1/CEBPA mutation in FLT3 negative patients, among intermediate risk group, was found to be statistically significant (p<0.05) in determining overall survival. In this subgroup, presence of NPM1/CEBPA combination (NPM1+/CEBPA+) was associated with poor prognosis (figure 2, lower curve), while absence of NPM1/CEBPA combination (NPM1-/CEBPA-) carries a better prognosis (figure 2, upper curve). Conclusion: Results of our study highlight the importance of performing combinations of mutation analysis in evaluation of overall prognosis in AML patients. FLT3-/NPM1+ profile in patients with normal cytogenetics is thought to confer a favorable prognosis. We demonstrated in this study that using combination mutation analysis in patients with FLT3- can change the risk stratification in patients with intermediate risk group and might affect therapeutic interventions in this patient population. Larger prospective studies are needed in the future for further validation of our findings. Disclosures: No relevant conflicts of interest to declare.

A Combined Score of Minimal Residual Disease (MRD) Assessment by Flow Cytometry, Cytogenetic and Molecular Markers As Well As Age Predicts Outcome and Can Potentially Guide MRD-Based Therapy in Acute Myeloid Leukemia

Blood ◽  
2011 ◽  
Vol 118 (21) ◽  
pp. 934-934 ◽  
Author(s):  
Thomas Köhnke ◽  
Daniela Sauter ◽  
Katharina Ringel ◽  
Jan Braess ◽  
Wolfgang Hiddemann ◽  
...  
Keyword(s):  
Flow Cytometry ◽  
Overall Survival ◽  
Acute Myeloid Leukemia ◽  
Induction Chemotherapy ◽  
Myeloid Leukemia ◽  
Residual Disease ◽  
Prognostic Score ◽  
Therapeutic Decisions ◽  
Minimal Residual ◽  
Acute Myeloid

Abstract Abstract 934 Background: Induction chemotherapy in acute myeloid leukemia (AML) has been shown to successfully induce complete remission in over 70% of patients. However, a majority of patients experience subsequent relapse. Assessment of minimal residual disease (MRD) by flow cytometry at time of aplasia, after induction and after consolidation therapy has been shown to be of prognostic relevance for relapse free survival (RFS) and overall survival (OS). However, studies utilizing MRD diagnostics to guide therapeutic decisions in adult AML (excluding APL) are yet to be performed. Methods: From the database at the Laboratory of Leukemia Diagnostics at our clinic datasets of 583 patients with newly diagnosed AML treated between 2000 and 2011 were analyzed. Patients with biphenotypic acute leukemia, M3 according to FAB classification, as well as those not treated with intensive induction chemotherapy were excluded. To be eligible for further analysis, at least two samples of bone marrow blood (at primary diagnosis and at one further timepoint during or after treatment) had to be available for MRD assessment by 3-color-flow cytometry at our laboratory. Cytogenetic and molecular risk stratification was performed at our clinic and assigned in accordance to the European LeukemiaNet (ELN) guidelines. We used Cox Proportional Hazards Regression to determine prognostic factors for OS and RFS and Kaplan-Meier estimator to determine OS and RFS of the proposed score. Results: Data of 217 Patients fulfilled the inclusion criteria and were therefore eligible for further analysis. 171 (78,8%) patients achieved CR after induction therapy. Of these patients, 120 had flow cytometry data available at time of aplasia and were included in further analysis. The median age was 54,5 y and the median OS 1007 days. Here, only “favorable” ELN risk stratification was associated with significantly longer OS (favorable vs. intermediate-I, Intermediate-II & adverse, Hazard Ratio, HR 0,36, 95% CI 0,19–0,69, p=0,0019), whereas RFS did not yield a significant difference (HR 0,64, 0,37-1,13, p=0,125). Age > 60y was associated with significantly shorter OS (HR 2,07, 1,23-3,47, p=0,0058) and RFS (HR 1,83, 1,11-3,01, p=0,018). And though leukemia-associated phenotypes (LAIP) ≥0,15% at time of aplasia were not predictive of OS (HR 1,32, 0,79–2,23, p=0,293) they were highly predictive of shorter RFS (HR 2,15, 1,30–3,55, p=0,003). Combining these three factors in a simple prognostic score (ELN risk group “favorable” = 0 points, “intermediate-I”, “intermediate-II” or “adverse” = 1 point; age > 60y = 1 point; LAIP at time of aplasia ≥0,15% = 1 point, see table I) identified three distinct groups (0 points: good, 1 point: intermediate, 2–3 points: poor, see table II) which were predictive of both OS and RFS (see figures 1 and 2). Interestingly, this score was capable of identifying a small group of patients with a very good prognosis (n=18, median OS and RFS not reached after >6 years) while at the same time equally dividing up the remaining patients within the intermediate and poor prognosis group (n=52 vs. 50, median OS 1182 vs. 677 days, median RFS 1180 vs. 334 days). Conclusion: MRD based therapeutic decisions and risk-adapted therapy have long been suggested in management of adult AML. Here, we propose a prognostic score for patients with AML achieving CR under intensive induction chemotherapy. The addition of MRD Flow to established genetic prognostic markers as well as age improves the prediction of relapse free and overall survival. Application of this score in therapeutic decisions could assist the treating physician and avoid over-treatment. To further evaluate our proposed prognostic score, it has to be applied in a prospective study for further evaluation and determination of its clinical significance. These data will be the basis for therapeutic trials guided by MRD assessment. Disclosures: No relevant conflicts of interest to declare.

Daunorubicine, Cytarabine and Cladribine (DAC) Vs Daunorubicine and Cytarabine (DA) Induction Treatment in Elderly Acute Myeloid Leukemia (AML) Patients – Results of the Prospective, Multicenter, Randomized Trial of the Polish Adult Leukemia Group (PALG)

Blood ◽  
2012 ◽  
Vol 120 (21) ◽  
pp. 3602-3602
Author(s):  
Agnieszka Pluta ◽  
Tadeusz Robak ◽  
Agata Wrzesien-Kus ◽  
Bozena Katarzyna Budziszewska ◽  
Kazimierz Sulek ◽  
...  
Keyword(s):  
Overall Survival ◽  
Acute Myeloid Leukemia ◽  
Treatment Option ◽  
Induction Therapy ◽  
Myeloid Leukemia ◽  
Performance Status ◽  
Hematological Toxicity ◽  
Proportional Hazard ◽  
Newly Diagnosed ◽  
Acute Myeloid

Abstract Abstract 3602 Background: AML in elderly patients is associated with very poor prognosis. The best treatment option for this group of patients is not established, yet. The intensity of treatment depends on performance status and comorbidities. The previous PALG AML study showed that addition of cladribine (2CdA) to conventional induction therapy; especially in patients above 40 yrs, is associated with better outcome (Ho3owiecki 2004). Based on this observation we designed a study addressed to newly diagnosed AML patients above 60 yrs old, who were fit enough to intensive treatment. Aim: To verify whether addition of 2CdA has an impact to clinical outcome in newly diagnosed AML patients older than 60 years old. Methods: From October 2004 to November 2011, 178 patients from 16 hematological PALG centers were randomly assigned to DA induction therapy consisting of daunorubicine (DNR) 45mg/m2, intravenously (iv), day 1–3 and cytarabine (AraC) 100 mg/m2, iv, day 1–7 (DA) or DA with addition of 2CdA 5mg/m2, iv, day 1–5 (DAC). Patients, who achieved complete remission (CR), received one course of consolidation with mitoxantron 6mg/m2 iv day1–2 and AraC 100mg/m2 iv day 1–5, followed by six cycles of maintenance consisting of (DNR 30mg/m2 iv day 1–2 with AraC 100mg/m2 sc day 1–5 and tioguanine 100mg/m2, p.o., twice day, day 1–5 with AraC 100mg/m2 s.c. day 1–5, alternately). Response criteria were determined according to revised recommendations of the International Working Group for Diagnosis, Standardization of Response Criteria, Treatment Outcomes, and Reporting Standards for Therapeutic Trials in Acute Myeloid Leukemia (Chesson 2003). Statistical analysis: Pairwise comparisons between patient characteristics were performed by the Mann-Whitney U-test for continuous variables and by χ2-statistics or Fisher's exact test for categorical variable. The Kaplan-Meier estimates of survival were calculated and compared using the log-rank test. For multivariate analysis, the Cox proportional hazard regression model was applied. P values < 0.05 were considered significant. Results: 88 pts with median age 66 yrs (range 60–79 yrs) were randomized to DA and 90 pts with median age 64 yrs (range 60–79 yrs) was enrolled to DAC schema. The both groups were comparable in terms of age, sex, performance status, white blood cell count, hemoglobin level, platelets count, tumor burden parameters, cytogenetic, between the both groups. The overall CR rate was 38%. In DA and DAC groups CR was achieved in 33% and 43% pts, respectively (p=0.12). However, in patients under 65 yrs the trend towards higher CR rate in DAC arm than DA group was observed (47% vs. 29%, p=0.09). In pts above 65 yrs the CR rate was comparable (39% vs. 38%, p=0.8). The efficacy and hematological toxicity in DA and DAC groups was similar (Table 1). Also no statistical significant differences in non-hematological toxicity were observed (data not shown). Early deaths in DA and DAC did not differ significantly. Median overall survival (OS) in DA and DAC arm was also similar in both groups (Table 1). In proportional hazard Cox analysis only age under 65yo, CR achievement and WBC above 100G/L were important for better OS (p=0.02, p<0.001 and p=0.09). The presence of dysplastic changes, karyotype, LDH, number of bone marrow blasts did not influenced OS. Conclusions: Our data suggest that prolonged overall survival can be achieved in elderly AML patients mainly till 65yrs. Intensive therapy, especially in patients older than 65yrs, may be associated with high number of complications what results withdrawing from intensive treatment protocol. Hematological and non-hematological toxicity of DA and DAC schema is comparable, however higher CR rate in DAC group in patient till 65yrs may suggest, that addition of 2CdA to DA does not increase toxicity and may be a treatment option in this patient population. Disclosures: Wiktor-Jedrzejczak: Janssen-Cilag: Consultancy; Amgen: Consultancy; Novartis: Consultancy, Speakers Bureau; Pfizer: Consultancy; Bayer: Consultancy; Genopharm: Speakers Bureau; Celgene: Speakers Bureau; Genzyme: Speakers Bureau; Bristol-Myers Squibb: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau.

scholarly journals Prognostic Impact of the Interaction between DNMT3A mutation and Internal Tandem Duplication of the FLT3 Gene (FLT3-ITD) in Patients with De Novo Mutated NPM1 (NPM1mut) acute Myeloid Leukemia

Blood ◽  
2018 ◽  
Vol 132 (Supplement 1) ◽  
pp. 1492-1492
Author(s):  
Guadalupe Oñate ◽  
Ana Garrido ◽  
Jordi Esteve ◽  
Rosa Coll ◽  
Montserrat Arnan Sangerman ◽  
...  
Keyword(s):  
Overall Survival ◽  
Acute Myeloid Leukemia ◽  
Complete Remission ◽  
Myeloid Leukemia ◽  
De Novo ◽  
Prognostic Impact ◽  
Intermediate Risk ◽  
Mutational Status ◽  
De Novo Aml ◽  
Acute Myeloid

Abstract Introduction The association of NPM1mut and FLT3-ITD in de novo acute myeloid leukemia (AML) with intermediate-risk cytogenetics has different prognostic impact depending on the FLT3 allelic burden. Previous studies published by our cooperative group showed that patients with de novo AML of intermediate-risk cytogenetics with NPM1mut and FLT3-ITD low ratio (<0.5, FLT3low) at diagnosis presented an overall survival and relapse rate similar to those with NPM1mut and FLT3wt. Therefore, in the CETLAM-2012 protocol, patients with FLT3low NPM1mut AML are not considered for allogenic hematopoietic stem cell transplant (allo-HSCT) in first complete remission (CR1). Recent studies suggest that the co-occurrence of DNMT3A mutation in FLT3-ITD NPM1mut AML patients confers a worse prognosis regardless of FLT3-ITD ratio. We analysed our data to determine whether these findings were confirmed in our cohort, specifically in the low FLT3-ITD ratio patients, since this could have therapeutic implications. Methods and patients A total of 163 patients with de novo AML, intermediate-risk cytogenetics and NPM1mut were analysed (median age 53 years (18-72); male:female 72:91 (0.79)). Eighty patients (49%) harboured an FLT3-ITD, with a high allelic ratio in 42 of 76 patients with available ITD/wt ratio (55%). They were included in the AML-2003 (n=49) and AML-2012 (n=114) CETLAM protocols. Proportion of patients undergoing alloHSCT in CR1 is detailed in table 1. Bone marrow samples from diagnosis were studied for DNMT3A mutations as previously described. The definition of complete remission (CR), overall survival (OS), leukemia-free survival (LFS) and risk of relapse (RR) followed recommended ELN criteria. The Kaplan-Meier method was used to estimate the distribution of LFS and OS, for RR cumulative incidence was used. Results Out of the 163 patients with AML of intermediate risk cytogenetics and NPM1mut, 78 presented DNMT3A mutations (48%). Of these, 62 (79%) presented mutations in codon R882 or corresponded to DNA insertions/deletions while 16 (21%) harboured missense mutations. Presence of DNMT3A mutation did not associate with FLT3-ITD (ITD/85 DNMT3Awt vs ITD/78 DNMT3Amut, p=0.394). In the entire cohort, 5-year OS, LFS and RR were 58±4.5%, 59±4.6% and 27±13.9%. FLT3-ITD ratio confirmed its prognostic impact when analysing FLT3wt (n=83) vs FLT3low (n=34) vs FLT3high (n=42) patients (5-year OS of 68±6% vs 62±8.7% vs 37±8.6%; p=0.002; and 5-year RR of 18±9.4% vs 27±16.1% vs 41±23.2%; p=0.023). On the contrary, DNMT3Amut did not exert any effect on overall outcome (5-yr OS DNMT3Awt vs DNMT3Amut 61±6.2% vs 55±6.2%; p=0.234) When DNTM3A mutational status was considered, the impact of FLT3-ITD on outcome was mitigated in wild-type DNMT3A population. Thus, we found that DNMT3Awt patients presented no statistical differences in OS according to FLT3 mutational status or ratio: FLT3wt (n=46) vs FLT3-ITD (n=39) was 67±8.5% vs 57±8.2%; p=0.122, whereas FLT3wt (n=46) vs FLT3low (n=18) vs. FLT3high (n=19) was 67±8.5% vs. 66±11.5% vs 46±11.8%; p=0.088 (image 1A).This was also seen in relation to LFS and RR according to FLT3 ratio: 5-yr LFS of FLT3wt vs FLT3low vs FLT3high was 72±7.9% vs 61±12.6% vs 51±13.4%; p=0.244 and 5-year RR of the same groups: 19±8.8% vs 26±12.5% vs 27±21.9%; p=0.724 (image 2A). In the DNMT3Amut group, patients with FLT3-ITD (n=41) presented shorter OS than those with FLT3wt (n=37) with an OS of 37±10.7% vs 69±7.8%; p=0.028. When FLT3 ratio was considered, FLT3wt (n=37) vs FLT3low (n=16) vs FLT3high (n=23) showed an OS of 69±7.8% vs. 58±13.2% vs 27±13.1%; p=0.038 (image 1B). Similar results were seen in LFS according to FLT3 ratio (FLT3wt (n=29) vs FLT3low (n=16) vs FLT3high (n=20) 71±8.6% vs 53±12.9% vs 18±13.8%; p=0.012). Finally, we observed significant differences in the 5-year RR when considering DNMT3Amut patients in relation to FLT3 ratio (FLT3wt vs FLT3low vs FLT3high 18±10.6% vs 27±20% vs 54±28.8%; p=0.021)(image 2B). Conclusions In this study, patients with NPM1mut and FLT3-ITDlow presented a similar outcome to patients with NPM1mut and FLT3wt regardless of DNMT3A mutational status. These results support the modification of alloHCST policy in CR1 in CETLAM-2012, which do not consider alloHSCT for patients with FLT3low. On the other hand, concurrence of DNMT3A mutation may have an added negative effect in patients with NPM1mut and FLT3-ITDhigh, which should be further confirmed in larger studies. Disclosures No relevant conflicts of interest to declare.

Prognostic Index for Older Adult Patients with Newly Diagnosed Acute Myeloid Leukemia: The Edouard Herriot Hospital Experience.

Blood ◽  
2007 ◽  
Vol 110 (11) ◽  
pp. 4352-4352
Author(s):  
Claudiu Plesa ◽  
Quoc-Hung Le ◽  
Youcef Chelghoum ◽  
Mohamed Elhamri ◽  
Isabelle Tigaud ◽  
...  
Keyword(s):  
Overall Survival ◽  
Acute Myeloid Leukemia ◽  
Myeloid Leukemia ◽  
Risk Group ◽  
Prognostic Score ◽  
Prognostic Index ◽  
Disease Free Survival ◽  
Newly Diagnosed ◽  
Co Morbidity ◽  
Acute Myeloid

Abstract The treatment of older adults with acute myeloid leukemia (AML) is associated with unsatisfactory rates of complete responses and long-term overall survival. Therefore, a clinically usefull prognostic index can facilitate therapeutic decision making and evaluation of investigational treatment strategies in this patient population. Overall, 243 of the 432 patients (56%, 95% CI: 51–60%) achieved CR (229 of them after the first induction course and 14 after salvage therapy). The median disease-free survival (DFS) and the median overall survival (OS) of the entire cohort were 8.4 months (95% CI: 7.2–10.1 months) and 8.3 months (95% CI: 7.2–10 months) respectively. A prognostic score is presented based on the multivariate analysis of 432 newly diagnosed non-M3 AML patients aged more than 60 years, selected on the base of their initial performance status and the absence of severe co-morbidity factors, for entering onto five successive clinical trials combining an anthracycline and cytarabine. Four clinically relevant parameters are included in this index: cytogenetics at diagnosis, history of previous hematologic disorder, hematologic features at diagnosis, and LDH level at diagnosis. Using this stratification system, three risk groups were defined: a favorable-risk group A (OS of 39% at 2 years and 21% at 5 years), an intermediate-risk group B (OS of 19% at 2 years and 8% at 5 years), and a poor-risk group (OS of 5% at 2 years and 0% at 5 years). The prognostic index estimates the outcome of elderly AML patients usually selected for intensive chemotherapy trials using four easily determined parameters and might identify patients who are really candidates for this treatment strategy from those for whom investigational therapy or palliation may be most appropriate.

Impact of Epigenetic Therapy Versus Conventional Chemotherapy on Survival of Elderly Patients with Acute Myeloid Leukemia

Blood ◽  
2011 ◽  
Vol 118 (21) ◽  
pp. 1494-1494
Author(s):  
Alfonso Quintás-Cardama ◽  
Hagop M Kantarjian ◽  
Guillermo Garcia-Manero ◽  
Farhad Ravandi ◽  
Mark Brandt ◽  
...  
Keyword(s):  
Overall Survival ◽  
Acute Myeloid Leukemia ◽  
Myeloid Leukemia ◽  
Median Overall Survival ◽  
Performance Status ◽  
Early Mortality ◽  
Epigenetic Therapy ◽  
Standard Chemotherapy ◽  
Acute Myeloid

Abstract Abstract 1494 Background: The prognosis of pts with acute myeloid leukemia (AML) is poor, particularly for those over the age of 60 (AML>60) as they frequently present with comorbidities, and AML secondary to an antecedent hematologic disease (typically MDS), worse performance status and unfavorable karyotypes compared with their younger counterparts. Complete remission (CR) rates amongst pts with AML>60 treated with a standard combination of cytarabine and an anthracycline (e.g. 7+3) are 35%–50% but the induction chemotherapy-related mortality is very high (30%) and the median survival is only 5–6 months. Epigenetic therapy (decitabine, azacitabine, histone deacetylase inhibitors) have emerged as attractive therapeutic options for AML>60. We investigated the impact of these agents on the survival of pts with AML>60 compared to that of standard chemotherapy. Patients and Methods: We analyzed 779 pts with newly diagnosed AML>60 treated with chemotherapy and 130 treated with epigenetic therapy treated at our institution between 2000 and 2010. Of the 130 pts receiving epigenetic therapy, 78 received decitabine-based therapy and 52 azacitidine-based therapy. Of the 779 pts receiving chemotherapy, 74% received AI (ara-C 1.5g/m2x3d and idarubicin 12mg/m2x3d) or AI-based chemotherapy. Baseline characteristics for pts treated with chemotherapy vs epigenetic were: median age (69 vs 72 yrs; p=0.000039), performance status 0–2 (n=124; 95% vs 95%, p=0.8), WBC (5.7×109/dL vs 3.2×109/dL; p=0.00004), Hg (8.2g/dL vs 8.7g/dL; p=0.0004), platelets (49×109/dL vs 55×109/dL; p=0.1), BM blasts (43% vs 35%; p=0.0001), PB blasts (14 vs 6.5; p=0.0006), poor cytogenetics (25% vs 32%; p=0.13). Results: The CR rates for pts treated with chemotherapy and epigenetic therapy were 47% and 28%, respectively (p=0.0001). The overall response rate (ORR) for both groups (CR+CRp) was 53% and 29% (p=0.0001). The proportion of pts not responding to chemotherapy or epigenetic therapy was similar (i.e. no CR or CRp, 47% vs 68%, p=0.0001). The early mortality (mortality within the first 8 wks of therapy) for both groups was 16% and 8%, respectively (p=0.029). Azacitidine has been recently shown to prolong the survival of patients with myelodysplastic syndrome (MDS) when compared to standard therapy. However, the median overall survival (OS) for pts with AML>60 treated with chemotherapy or epigenetic therapy was not significantly different (7.6mo vs 6.9mo, p=0.13). When the analysis was limited to pts with unfavorable cytogenetics (−5, −7, complex), the CR for patients treated with chemotherapy or epigenetic therapy was 31% vs 36% (p=0.06) while the median overall survival for both groups was 17wks vs 22 wks (p=0.03). The corresponding figures for patients with diploid cytogenetics were 58% vs 31% (p=0.0001) and 50wks vs 37 wks (p=0.09). Similarly, the OS for pts in both groups who carried mutations in the FLT3 gene were 30wks vs 37 wks (p=0.7). We next investigated potential differences between different epigenetic therapies. The CR rate (27% vs 30%, p=0.6) and OS (38wks vs 25wks, p=0.07) for pts treated with decitabine/decitabine-based therapy or azacitidine/azacitidine-based therapy were not significantly different. Conclusion: The administration of standard chemotherapy to pts with AML>60 is associated with low CR rates, high early mortality rates, and a low probability of long-term survival. Despite prolonging survival in pts with MDS, the use of epigenetic therapy in pts with AML>60 is not associated with significant improvements in long-term outcomes compared with standard chemotherapy. Disclosures: No relevant conflicts of interest to declare.

Limitations of Performance Status (PS) Assignment in Predicting Outcomes of Acute Myeloid Leukemia (AML) and the Role of Objective Parameters in Predicting PS Assignment,

Blood ◽  
2011 ◽  
Vol 118 (21) ◽  
pp. 4191-4191
Author(s):  
Kathleen Wren Phelan ◽  
Sucha Nand ◽  
Laura C Michaelis
Keyword(s):  
Bone Marrow ◽  
Overall Survival ◽  
Acute Myeloid Leukemia ◽  
Myeloid Leukemia ◽  
Performance Status ◽  
Albumin Level ◽  
Clinical Parameters ◽  
The Relationship ◽  
Acute Myeloid

Abstract Abstract 4191 Background: Performance status is traditionally used to judge fitness in cancer patients. It is often a key factor in determining appropriateness for chemotherapy and entry into clinical trials. Most research on PS has been in solid tumor patients, but it is generally assumed to be valid in hematologic malignancies as well. However, PS assessment can be problematic, especially in patients who have become ill quickly or where there are conflicting parameters; e.g. patients whose function is limited but who are still actively working. We explored the role of PS in patients with AML to determine if alternative, more objectively determined parameters, could predict PS. We evaluated the relationship between PS and rates of complete remission (CR) and duration of overall survival (OS) as well as the relationship between objectively determined pretreatment parameters and these outcomes. Methods: Approval for retrospective data collection was obtained by the institutional IRB. A randomly selected cohort of 145 patients with newly diagnosed AML was identified using pharmacy records of treatment with induction agents cytarabine, daunorubicin or azacitidine. We excluded patients with acute promyelocytic leukemia. Pretreatment data was collected from the electronic medical record of each subject, including AML subtype, age, gender, PS, presence of infection at diagnosis, peripheral blood white blood cell count, peripheral blood blast percentage, hemoglobin, lactate dehydrogenase, aspartate transaminase, alanine transaminase, creatinine, albumin, left ventricular ejection fraction (LVEF), bone marrow cellularity, bone marrow blast percentage and cytogenetics. Achievement of complete remission was assessed and overall survival was calculated in months from diagnosis to either death or date of censorship. PS was obtained from physician notes and documented as a Zubrod score. In the absence of documentation, the authors reviewed medical records for presenting symptoms, mobility and functional status and made an assignment. Retrospective assignment of PS was reviewed and confirmed by at least two of the authors. Logistic regression was performed to examine the relationship between pretreatment characteristics and CR, and the effect of pretreatment characteristics and the assignment of PS, dichotomized as good (0–1) vs. poor (2–4). Linear regression analysis was used to investigate the relationship between pretreatment characteristics and OS. Results: A total of 120/145 (83%) were assigned a PS of 0, 1. Twenty patients were considered to have a PS of 2 and five patients had a PS of 3. There was a statistically significant relationship between a good PS assignment and a higher albumin level (OR 5.32, p=0.000, 95% CI 2.32, 12.22). There was no significant relationship between the remaining clinical parameters and PS assignment, including age at diagnosis. Ninety-three patients (64%) achieved a CR. There was no relationship between PS, assigned either contemporarily or retrospectively, with the achievement of CR. The median overall survival was 15 months (range 0 to 92 months). PS did not predict the duration of OS. As is well reported, CR was significantly more likely in younger (< 60 yrs) patients and patients with favorable cytogenetics. Median OS was also prolonged in these patients. No additional pretreatment characteristics were significantly related to CR or OS except LVEF. Patients with an LVEF greater than 50% were more likely to achieve a CR (P=0.0001) and had a longer OS. Conclusions: We found that, among pretreatment characteristics, a higher albumin level was associated with a good performance status. Age was not a predictor of PS. Contrary to expectations, in this population of treated AML patients, PS did not predict either CR or OS. In addition to the association of younger age and favorable cytogenetics with better outcomes, we found that a higher LVEF is also associated with higher CR rates, but this is likely explained by choice of chemotherapeutic agents. Our data calls into question the use of PS as a tool to guide therapy in routine clinical management of acute myeloid leukemia. Prospective studies should evaluate the utility of more objective and more reliably documented clinical parameters than PS for predicting patient outcome. Disclosures: No relevant conflicts of interest to declare.

European Development of Clofarabine as Treatment for Older Patients With Acute Myeloid Leukemia Considered Unsuitable for Intensive Chemotherapy

2010 ◽  
Vol 28 (14) ◽  
pp. 2389-2395 ◽  
Author(s):  
Alan K. Burnett ◽  
Nigel H. Russell ◽  
Jonathan Kell ◽  
Michael Dennis ◽  
Donald Milligan ◽  
...  
Keyword(s):  
Overall Survival ◽  
Acute Myeloid Leukemia ◽  
Complete Remission ◽  
Older Patients ◽  
Myeloid Leukemia ◽  
Performance Status ◽  
Poor Performance Status ◽  
Intensive Chemotherapy ◽  
Phase Ii Studies ◽  
Acute Myeloid

Purpose Treatment options for older patients with acute myeloid leukemia (AML) who are not considered suitable for intensive chemotherapy are limited. We assessed the second-generation purine nucleoside analog, clofarabine, in two similar phase II studies in this group of patients. Patients and Methods Two consecutive studies, UWCM-001 and BIOV-121, recruited untreated older patients with AML to receive up to four or six 5-day courses of clofarabine. Patients in UWCM-001 were either older than 70 years or 60 to 69 years of age with poor performance status (WHO > 2) or with cardiac comorbidity. Patients in BIOV-121 were ≥ 65 years of age and deemed unsuitable for intensive chemotherapy. Results A total of 106 patients were treated in the two monotherapy studies. Median age was 71 years (range, 60 to 84 years), 30% had adverse-risk cytogenetics, and 36% had a WHO performance score ≥ 2. Forty-eight percent had a complete response (32% complete remission, 16% complete remission with incomplete peripheral blood count recovery), and 18% died within 30 days. Interestingly, response and overall survival were not inferior in the adverse cytogenetic risk group. The safety profile of clofarabine in these elderly patients with AML who were unsuitable for intensive chemotherapy was manageable and typical of a cytotoxic agent in patients with acute leukemia. Patients had similar prognostic characteristics to matched patients treated with low-dose cytarabine in the United Kingdom AML14 trial, but had significantly superior response and overall survival. Conclusion Clofarabine is active and generally well tolerated in this patient group. It is worthy of further evaluation in comparative trials and might be of particular use in patients with adverse cytogenetics.

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