scholarly journals Measurable residual disease, conditioning regimen intensity, and age predict outcome of allogeneic hematopoietic cell transplantation for acute myeloid leukemia in first remission: A registry analysis of 2292 patients by the Acute Leukemia Working Party E

2018 ◽  
Vol 93 (9) ◽  
pp. 1142-1152 ◽  
Author(s):  
Maria H. Gilleece ◽  
Myriam Labopin ◽  
Ibrahim Yakoub-Agha ◽  
Liisa Volin ◽  
Gerard Socié ◽  
...  
Keyword(s):  
Acute Myeloid Leukemia ◽  
Myeloid Leukemia ◽  
Hematopoietic Cell Transplantation ◽  
Residual Disease ◽  
Conditioning Regimen ◽  
Working Party ◽  
First Remission ◽  
Registry Analysis ◽  
Measurable Residual Disease ◽  
Acute Myeloid

scholarly journals Clonal hematopoiesis and measurable residual disease assessment in acute myeloid leukemia

Blood ◽  
2020 ◽  
Vol 135 (20) ◽  
pp. 1729-1738 ◽  
Author(s):  
Robert P. Hasserjian ◽  
David P. Steensma ◽  
Timothy A. Graubert ◽  
Benjamin L. Ebert
Keyword(s):  
Acute Myeloid Leukemia ◽  
Myeloid Leukemia ◽  
Hematopoietic Cell Transplantation ◽  
Residual Disease ◽  
Molecular Genetic ◽  
Disease Assessment ◽  
Clonal Hematopoiesis ◽  
Myeloid Neoplasm ◽  
Measurable Residual Disease ◽  
Acute Myeloid

Abstract Current objectives regarding treatment of acute myeloid leukemia (AML) include achieving complete remission (CR) by clinicopathological criteria followed by interrogation for the presence of minimal/measurable residual disease (MRD) by molecular genetic and/or flow cytometric techniques. Although advances in molecular genetic technologies have enabled highly sensitive detection of AML-associated mutations and translocations, determination of MRD is complicated by the fact that many treated patients have persistent clonal hematopoiesis (CH) that may not reflect residual AML. CH detected in AML patients in CR includes true residual or early recurrent AML, myelodysplastic syndrome or CH that is ancestral to the AML, and independent or newly emerging clones of uncertain leukemogenic potential. Although the presence of AML-related mutations has been shown to be a harbinger of relapse in multiple studies, the significance of other types of CH is less well understood. In patients who undergo allogeneic hematopoietic cell transplantation (HCT), post-HCT clones can be donor-derived and in some cases engender a new myeloid neoplasm that is clonally unrelated to the recipient’s original AML. In this article, we discuss the spectrum of CH that can be detected in treated AML patients, propose terminology to standardize nomenclature in this setting, and review clinical data and areas of uncertainty among the various types of posttreatment hematopoietic clones.

scholarly journals Impact of Conditioning Intensity of Allogeneic Transplantation for Acute Myeloid Leukemia With Genomic Evidence of Residual Disease

2020 ◽  
Vol 38 (12) ◽  
pp. 1273-1283 ◽  
Author(s):  
Christopher S. Hourigan ◽  
Laura W. Dillon ◽  
Gege Gui ◽  
Brent R. Logan ◽  
Mingwei Fei ◽  
...  
Keyword(s):  
Acute Myeloid Leukemia ◽  
Myeloid Leukemia ◽  
Hematopoietic Cell Transplantation ◽  
Disease Risk ◽  
Residual Disease ◽  
Conditioning Regimen ◽  
Multivariable Analysis ◽  
Allogeneic Transplantation ◽  
Phase Iii ◽  
Acute Myeloid

PURPOSE Patients with acute myeloid leukemia (AML) in remission remain at risk for relapse even after allogeneic hematopoietic cell transplantation (alloHCT). AML measurable residual disease (MRD) status before alloHCT has been shown to be prognostic. Whether modulation of the intensity of the alloHCT conditioning regimen in patients with AML who test positive for MRD can prevent relapse and improve survival is unknown. METHODS Ultra-deep, error-corrected sequencing for 13 commonly mutated genes in AML was performed on preconditioning blood from patients treated in a phase III clinical trial that randomly assigned adult patients with myeloid malignancy in morphologic complete remission to myeloablative conditioning (MAC) or reduced-intensity conditioning (RIC). RESULTS No mutations were detected in 32% of MAC and 37% of RIC recipients; these groups had similar survival (3-year overall survival [OS], 56% v 63%; P = .96). In patients with a detectable mutation (next-generation sequencing [NGS] positive), relapse (3-year cumulative incidence, 19% v 67%; P < .001) and survival (3-year OS, 61% v 43%; P = .02) was significantly different between the MAC and RIC arms, respectively. In multivariable analysis for NGS-positive patients, adjusting for disease risk and donor group, RIC was significantly associated with increased relapse (hazard ratio [HR], 6.38; 95% CI, 3.37 to 12.10; P < .001), decreased relapse-free survival (HR, 2.94; 95% CI, 1.84 to 4.69; P < .001), and decreased OS (HR, 1.97; 95% CI, 1.17 to 3.30; P = .01) compared with MAC. Models of AML MRD also showed benefit for MAC over RIC for those who tested positive. CONCLUSION This study provides evidence that MAC rather than RIC in patients with AML with genomic evidence of MRD before alloHCT can result in improved survival.

scholarly journals How to Improve Prognostication in Acute Myeloid Leukemia with CBFB-MYH11 Fusion Transcript: Focus on the Role of Molecular Measurable Residual Disease (MRD) Monitoring

Biomedicines ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 953
Author(s):  
Annalisa Talami ◽  
Francesca Bettelli ◽  
Valeria Pioli ◽  
Davide Giusti ◽  
Andrea Gilioli ◽  
...  
Keyword(s):  
Acute Myeloid Leukemia ◽  
Myeloid Leukemia ◽  
Residual Disease ◽  
Disease Onset ◽  
Working Party ◽  
Fusion Transcript ◽  
Prognostic Impact ◽  
End Of Treatment ◽  
Measurable Residual Disease ◽  
Acute Myeloid

Acute myeloid leukemia (AML) carrying inv(16)/t(16;16), resulting in fusion transcript CBFB-MYH11, belongs to the favorable-risk category. However, even if most patients obtain morphological complete remission after induction, approximately 30% of cases eventually relapse. While well-established clinical features and concomitant cytogenetic/molecular lesions have been recognized to be relevant to predict prognosis at disease onset, the independent prognostic impact of measurable residual disease (MRD) monitoring by quantitative real-time reverse transcriptase polymerase chain reaction (qRT-PCR), mainly in predicting relapse, actually supersedes other prognostic factors. Although the ELN Working Party recently indicated that patients affected with CBFB-MYH11 AML should have MRD assessment at informative clinical timepoints, at least after two cycles of intensive chemotherapy and after the end of treatment, several controversies could be raised, especially on the frequency of subsequent serial monitoring, the most significant MRD thresholds (most commonly 0.1%) and on the best source to be analyzed, namely, bone marrow or peripheral blood samples. Moreover, persisting low-level MRD positivity at the end of treatment is relatively common and not predictive of relapse, provided that transcript levels remain stably below specific thresholds. Rising MRD levels suggestive of molecular relapse/progression should thus be confirmed in subsequent samples. Further prospective studies would be required to optimize post-remission monitoring and to define effective MRD-based therapeutic strategies.

Preconditioning Neutropenia Is a Key Prognostic Factor in Allogeneic Hematopoietic Cell Transplantation for High Risk Acute Myeloid Leukemia

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 3411-3411
Author(s):  
Philippa J Rohman ◽  
Richard M Szydlo ◽  
Emily Hobbs ◽  
Renuka Palanicawandar ◽  
Belen Sevillano ◽  
...  
Keyword(s):  
Acute Myeloid Leukemia ◽  
High Risk ◽  
Prognostic Factor ◽  
Cell Transplantation ◽  
Neutrophil Count ◽  
Myeloid Leukemia ◽  
Hematopoietic Cell Transplantation ◽  
Residual Disease ◽  
Measurable Residual Disease ◽  
Acute Myeloid

Abstract Identification of prognostic indicators to predict outcomes of hematopoietic cell transplantation (HCT) is important for selection of patients most likely to benefit from the procedure. Widely validated systems such as the HCT-Comorbidity Index (HCT-CI) and the modified EBMT risk score provide consistent prediction of outcomes, in particular non-relapse mortality (NRM) and survival. In this retrospective study we identified neutropenia prior to initiation of conditioning regimen as an additional prognostic factor in 117 adults with high risk acute myeloid leukemia (AML) who received HCT at a single institution from January 2005 to December 2015. The main endpoints of the study were day 100 non-relapse mortality and survival at 5 years. The median age at HCT was 50 years (range 21-68); 65% had an EBMT score of ≥4. In total 107 (91%) patients had poor risk disease, with classification for poor risk including; patients undergoing HCT due to failure to achieve complete remission (CR) after induction chemotherapy, patients in 2nd CR, patients in 1st CR with adverse karyotype, patients with standard karyotype but with a FLT-3 mutation, patients with measurable residual disease (MRD) by immunophenotyping or molecular monitoring and patients with secondary AML. Conditioning was myeloablative (Cy-TBI: N=41, Bu-Cy: N=3) for patents younger than 51 years with good performance status; the intensity of conditioning was reduced for the others (N=73). Standard methotrexate and cyclosporine was used as graft versus host disease prophylaxis in recipients of sibling cells, and unrelated graft recipients also received alemtuzumab. With a median follow-up of 3.1 years (range 0.3 - 10.0), day 100 NRM for the whole group was 17.3% (95% confidence interval (CI) 11 - 25) and the probability of survival at 5 years was 40.3% (95% CI 31 - 50). The effects of patient, disease and transplant factors were analysed in univariate analyses on both NRM and survival. Significant factors were then entered into multivariate analyses which yielded significant associations with improved NRM for preconditioning absolute neutrophil count (ANC) >= 1000/microL and HCT-CI < 3 (Figure) (hazard ratio (HR) 0.36; 95% CI 0.1 - 0.9 and HR 0.39; 95% CI 0.2 - 0.9 respectively). The factors associated with improved survival in multivariate analysis included preconditioning neutrophil count >= 1000/microL (HR 2.9; 95% CI 1.6 -5.4, P= 0.01), absence of any measurable disease prior to conditioning (HR 2.1; 95% CI 1.1 -4.2, P= 0.03), and less than 2 disease risk defining criteria (HR 15.8; 95% CI 2.0 -124.4, P= 0.01). In conclusion, patients with ANC of 1000/microL and above prior to initiation of conditioning and those with HCT-CI below 3 had significantly better day 100 NRM. ANC of 1000/microL or above was also associated with better survival at 5 years together with disease specific factors, absence of measurable residual disease prior to initiation of condition and less than two adverse prognostic factors. A simple measurement such as the neutrophil count helps to predict outcome: this might reflect the presence of on-going disease but it is also possible that delaying transplant until neutrophil count recovery might impact favourably on the results. Our findings therefore advocate integration of preconditioning neutrophil count into existing risk assessment tools when considering HCT. Figure Figure. Disclosures Milojkovic: Bristol Myers Squibb: Honoraria; Pfizer: Honoraria; Ariad: Honoraria; Novartis: Honoraria.

scholarly journals Measurable residual disease status and outcome of transplant in acute myeloid leukemia in second complete remission: a study by the acute leukemia working party of the EBMT

2021 ◽  
Vol 11 (5) ◽  
Author(s):  
Maria H. Gilleece ◽  
Avichai Shimoni ◽  
Myriam Labopin ◽  
Stephen Robinson ◽  
Dietrich Beelen ◽  
...  
Keyword(s):  
Acute Myeloid Leukemia ◽  
T Cell ◽  
Acute Leukemia ◽  
Myeloid Leukemia ◽  
Residual Disease ◽  
Working Party ◽  
T Cell Depletion ◽  
Measurable Residual Disease ◽  
Acute Myeloid

AbstractMeasurable residual disease (MRD) prior to hematopoietic cell transplant (HCT) for acute myeloid leukemia (AML) in first complete morphological remission (CR1) is an independent predictor of outcome, but few studies address CR2. This analysis by the Acute Leukemia Working Party of the European Society for Blood and Marrow Transplantation registry assessed HCT outcomes by declared MRD status in a cohort of 1042 adult patients with AML CR2 at HCT. Patients were transplanted 2006–2016 from human leukocyte antigen (HLA) matched siblings (n = 719) or HLA 10/10 matched unrelated donors (n = 293). Conditioning was myeloablative (n = 610) or reduced-intensity (n = 432) and 566 patients (54%) had in-vivo T cell depletion. At HCT, 749 patients (72%) were MRD negative (MRD NEG) and 293 (28%) were MRD positive (MRD POS). Time from diagnosis to HCT was longer in MRD NEG than MRD POS patients (18 vs. 16 months (P < 0.001). Two-year relapse rates were 24% (95% CI, 21–28) and 40% (95% CI, 34–46) in MRD NEG and MRD POS groups (P < 0.001), respectively. Leukemia-free survival (LFS) was 57% (53–61) and 46% (40–52%), respectively (P = 0.001), but there was no difference in terms of overall survival. Prognostic factors for relapse and LFS were MRD NEG status, good risk cytogenetics, and longer time from diagnosis to HCT. In-vivo T cell depletion predicted relapse.

scholarly journals 2021 Update Measurable Residual Disease in Acute Myeloid Leukemia: European LeukemiaNet Working Party Consensus Document

Blood ◽  
2021 ◽  
Author(s):  
Michael Heuser ◽  
Sylvie D Freeman ◽  
Gert J Ossenkoppele ◽  
Francesco Buccisano ◽  
Christopher S Hourigan ◽  
...  
Keyword(s):  
Acute Myeloid Leukemia ◽  
Myeloid Leukemia ◽  
Drug Testing ◽  
Residual Disease ◽  
Working Party ◽  
Surrogate Endpoint ◽  
Consensus Document ◽  
Technical Specifications ◽  
Measurable Residual Disease ◽  
Acute Myeloid

Measurable residual disease (MRD) is an important biomarker in acute myeloid leukemia (AML) that is used for prognostic, predictive, monitoring, and efficacy-response assessments. The European LeukemiaNet (ELN) MRD working party evaluates standardization and harmonization of MRD in an ongoing manner and has updated the 2018 ELN MRD recommendations based on significant developments in the field. New and revised recommendations were established during in-person and online meetings, and a two-stage Delphi poll was conducted to optimize consensus. All recommendations are graded by levels of evidence and agreement. Major changes include technical specifications for next generation sequencing (NGS)-based MRD testing and integrative assessments of MRD irrespective of technology. Other topics include use of MRD as a prognostic and surrogate endpoint for drug testing; selection of the technique, material, and appropriate time points for MRD assessment; and clinical implications of MRD assessment. In addition to technical recommendations for flow- and molecular- MRD analysis, we provide MRD thresholds and define MRD response, and detail how MRD results should be reported and combined if several techniques are used. MRD assessment in AML is complex and clinically relevant, and standardized approaches to application, interpretation, technical conduct, and reporting are of critical importance.

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