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Boris E, Theron A, Montagnon V, Rouquier N, Almeras M, Moreaux J, Bret C. Immunophenotypic portrait of leukemia-associated-phenotype markers in B acute lymphoblastic leukemia. CYTOMETRY. PART B, CLINICAL CYTOMETRY 2024; 106:45-57. [PMID: 38037221 DOI: 10.1002/cyto.b.22153] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 11/09/2023] [Accepted: 11/14/2023] [Indexed: 12/02/2023]
Abstract
BACKGROUND Multiparametric flow cytometry (MFC) is an essential diagnostic tool in B acute lymphoblastic leukemia (B ALL) to determine the B-lineage affiliation of the blast population and to define their complete immunophenotypic profile. Most MFC strategies used in routine laboratories include leukemia-associated phenotype (LAP) markers, whose expression profiles can be difficult to interpret. The aim of our study was to reach a better understanding of 7 LAP markers' landscape in B ALL: CD9, CD21, CD66c, CD58, CD81, CD123, and NG2. METHODS Using a 10-color MFC approach, we evaluated the level of expression of 7 LAP markers including CD9, CD21, CD66c, CD58, CD81, CD123, and NG2, at the surface of normal peripheral blood leukocytes (n = 10 healthy donors), of normal precursor B regenerative cells (n = 40 uninvolved bone marrow samples) and of lymphoblasts (n = 100 peripheral blood samples or bone marrow samples from B ALL patients at diagnosis). The expression profile of B lymphoblasts was analyzed according the presence or absence of recurrent cytogenetic aberrations. The prognostic value of the 7 LAP markers was examined using Maxstat R algorithm. RESULTS In order to help the interpretation of the MFC data in routine laboratories, we first determined internal positive and negative populations among normal leukocytes for each of the seven evaluated LAP markers. Second, their profile of expression was evaluated in normal B cell differentiation in comparison with B lymphoblasts to establish a synopsis of their expression in normal hematogones. We then evaluated the frequency of expression of these LAP markers at the surface of B lymphoblasts at diagnosis of B ALL. CD9 was expressed in 60% of the cases, CD21 in only 3% of the cases, CD58 in 96% of the cases, CD66c in 45% of the cases, CD81 in 97% of the cases, CD123 in 72% of the cases, and NG2 in only 2% of the cases. We confirmed the interest of the CD81/CD58 MFI expression ratio as a way to discriminate hematogones from lymphoblasts. We observed a significant lower expression of CD9 and of CD81 at the surface of B lymphoblasts with a t(9;22)(BCR-ABL) in comparison with B lymphoblasts without any recurrent cytogenetic alteration (p = 0.0317 and p = 0.0011, respectively) and with B lymphoblasts harboring other cytogenetic recurrent abnormalities (p = 0.0032 and p < 0.0001, respectively). B lymphoblasts with t(1;19) at diagnosis significantly overexpressed CD81 when compared with B lymphoblasts with other recurrent cytogenetic abnormalities or without any recurrent alteration (p = 0.0001). An overexpression of CD58 was also observed in the cases harboring this abnormal cytogenetic event, when compared with B lymphoblasts with other recurrent cytogenetic abnormalities (p = 0.030), or without any recurrent alteration (p = 0.0002). In addition, a high expression of CD123, of CD58 and of CD81 was associated with a favorable prognosis in our cohort of pediatric and young adult B ALL patients. We finally built a risk score based on the expression of these 3 LAP markers, this scoring approach being able to split these patients into a high-risk group (17%) and a better outcome group (83%, p < 0.0001). CONCLUSION The complexity of the phenotypic signature of lymphoblasts at diagnosis of B ALL is illustrated by the variability in the expression of LAP antigens. Knowledge of the expression levels of these markers in normal leukocytes and during normal B differentiation is crucial for an optimal interpretation of diagnostic cytometry results and serves as a basis for the biological follow-up of B ALL.
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Affiliation(s)
- Emilia Boris
- Department of Biological Hematology, St Eloi Hospital, Montpellier University Hospital, Montpellier, France
| | - Alexandre Theron
- Department of Pediatric Onco-Hematology, Arnaud de Villeneuve Hospital, Montpellier University Hospital, Montpellier, France
- Faculty of Medicine, University of Montpellier, Montpellier, France
| | - Valentin Montagnon
- Department of Biological Hematology, St Eloi Hospital, Montpellier University Hospital, Montpellier, France
| | - Nicolas Rouquier
- Department of Biological Hematology, St Eloi Hospital, Montpellier University Hospital, Montpellier, France
| | | | - Jérôme Moreaux
- Department of Biological Hematology, St Eloi Hospital, Montpellier University Hospital, Montpellier, France
- Faculty of Medicine, University of Montpellier, Montpellier, France
- CNRS UMR 9002, Institute of Human Genetics, Montpellier, France
- Institut Universitaire de France, Paris, France
| | - Caroline Bret
- Department of Biological Hematology, St Eloi Hospital, Montpellier University Hospital, Montpellier, France
- Faculty of Medicine, University of Montpellier, Montpellier, France
- CNRS UMR 9002, Institute of Human Genetics, Montpellier, France
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Liao H, Jiang N, Yang Y, Zhang X, Chen J, Lai H, Zheng Q. Association of Minimal Residual Disease by a Single-Tube 8-Color Flow Cytometric Analysis With Clinical Outcome in Adult B-Cell Acute Lymphoblastic Leukemia: A Real-World Study Based on 486 Patients. Arch Pathol Lab Med 2023; 147:1186-1195. [PMID: 36508349 DOI: 10.5858/arpa.2022-0172-oa] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/14/2022] [Indexed: 09/29/2023]
Abstract
CONTEXT.— Minimal/measurable residual disease (MRD) measured by molecular and multiparametric flow cytometry (MFC) has been proven to be predictive of relapse and survival in patients with B-cell acute lymphoblastic leukemia (B-ALL). A universally applicable antibody panel at a low cost but without compromising sensitivity and power of prognosis prediction in adult B-ALL remains unestablished. OBJECTIVE.— To report our experience of using a single-tube 8-color MFC panel to measure the MRD status as a prognostic indicator in adult B-ALL patients. DESIGN.— We retrospectively analyzed the characteristics, MRD status, and prognosis of adult B-ALL based on a large real-world cohort of 486 patients during a 10-year period. RESULTS.— MRD assessed by MFC and polymerase chain reaction (PCR) assays for BCR-ABL+ patients showed concordant results in 74.2% of cases. MRD- status by our MFC panel could clearly predict a favorable relapse-free survival (RFS) and overall survival (OS) both at the end of induction and at the end of 1 consolidation course. Patients with continuous MRD- and with at least 1 MRD- result showed a favorable RFS and OS compared with those with at least 1 MRD+ result and continuous MRD+, respectively. CONCLUSIONS.— The single-tube 8-color MFC panel demonstrated a low cost, decent sensitivity, and comparability with polymerase chain reaction-MRD but an excellent performance in predicting RFS and OS, and thus could potentially be taken as a routine indicator in the evaluation of the treatment response for adult patients with B-ALL.
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Affiliation(s)
- Hongyan Liao
- From the Department of Laboratory Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Nenggang Jiang
- From the Department of Laboratory Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Ying Yang
- From the Department of Laboratory Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Xin Zhang
- From the Department of Laboratory Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Jiao Chen
- From the Department of Laboratory Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Hongli Lai
- From the Department of Laboratory Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Qin Zheng
- From the Department of Laboratory Medicine, West China Hospital of Sichuan University, Chengdu, China
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3
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Gao Q, Liu Y, Aypar U, Baik J, Londono D, Sun X, Zhang J, Zhang Y, Roshal M. Highly sensitive single tube B-lymphoblastic leukemia/lymphoma minimal/measurable residual disease test robust to surface antigen directed therapy. CYTOMETRY. PART B, CLINICAL CYTOMETRY 2023; 104:279-293. [PMID: 36999235 PMCID: PMC10508218 DOI: 10.1002/cyto.b.22120] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 02/10/2023] [Accepted: 03/20/2023] [Indexed: 04/01/2023]
Abstract
BACKGROUND Measurement of minimal/measurable residual disease (MRD) in B-lymphoblastic leukemia/lymphoma (B-ALL) has become a routine clinical evaluation tool and remains the strongest predictor of treatment outcome. In recent years, new targeted anti-CD19 and anti-CD22 antibody-based and cellular therapies have revolutionized the treatment of the high-risk B-ALL. The new treatments raise challenges for diagnostic flow cytometry, which relies on the presence of specific surface antigens to identify the population of interest. So far, reported flow cytometry-based assays are developed to either achieve a deeper MRD level or to accommodate the loss of surface antigens post-target therapies, but not both. METHODS We developed a single tube flow cytometry assay (14-color-16-parameters). The method was validated using 94 clinical samples as well as spike-in and replicate experiments. RESULTS The assay was well suited for monitoring response to targeted therapies and reached a sensitivity below 10-5 with acceptable precision (coefficient of variation < 20%), accuracy, and interobserver variability (κ = 1). CONCLUSIONS The assay allows for sensitive disease detection of B-ALL MRD independent of CD19 and CD22 expression and allows uniform analysis of samples regardless of anti-CD19 and CD22 therapy.
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Affiliation(s)
- Qi Gao
- Hematopathology Service, Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Ying Liu
- Hematopathology Service, Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Umut Aypar
- Hematopathology Service, Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Jeeyeon Baik
- Hematopathology Service, Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Dory Londono
- Hematopathology Service, Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Xiaotian Sun
- Hematopathology Service, Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Jingping Zhang
- Hematopathology Service, Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Yanming Zhang
- Hematopathology Service, Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Mikhail Roshal
- Hematopathology Service, Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
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Hein K, Short N, Jabbour E, Yilmaz M. Clinical Value of Measurable Residual Disease in Acute Lymphoblastic Leukemia. Blood Lymphat Cancer 2022; 12:7-16. [PMID: 35340663 PMCID: PMC8943430 DOI: 10.2147/blctt.s270134] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 02/24/2022] [Indexed: 01/04/2023]
Abstract
Measurable (minimal) residual disease (MRD) status in acute lymphoblastic leukemia (ALL) has largely superseded the importance of traditional risk factors for ALL, such as baseline white blood cell count, cytogenetics, and immunophenotype, and has emerged as the most powerful independent prognostic predictor. The development of sensitive MRD techniques, such as multicolor flow cytometry (MFC), quantitative polymerase chain reaction (PCR), and next-generation sequencing (NGS), may further improve risk stratification and expand its impact in therapy. Additionally, the availability of highly effective agents for MRD eradication, such as blinatumomab, inotuzumab ozogamicin, and chimeric antigen receptor (CAR) T-cell therapies, enabled the development of frontline regimens capable of eradicating MRD early in the treatment course. While long-term follow-up of this approach is lacking, it has the potential to significantly reduce the need for intensive post-remission treatments, including allogeneic bone marrow transplantation, in a significant proportion of patients with ALL.
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Affiliation(s)
- Kyaw Hein
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Nicholas Short
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Elias Jabbour
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Musa Yilmaz
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Das N, Gupta R, Gupta SK, Bakhshi S, Seth R, Kumar C, Rai S, Singh S, Prajapati VK, Gogia A, Sahoo RK, Sharma A, Kumar L. Critical evaluation of the utility of pre- and post-therapy immunophenotypes in assessment of measurable residual disease in B-ALL. Ann Hematol 2021; 100:2487-2500. [PMID: 34236495 DOI: 10.1007/s00277-021-04580-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 06/15/2021] [Indexed: 10/20/2022]
Abstract
Measurable residual disease (MRD) is an important parameter to predict outcome in B-cell acute lymphoblastic leukemia (B-ALL). Two different approaches have been used for the assessment of MRD by multiparametric flow cytometry that include the "Leukemia Associated Aberrant Immunophenotype (LAIP)" and "Difference from Normal (DFN)" approach. In this retrospective study, we analyzed 539 samples obtained from 281 patients of which 258 were paired samples and the remaining 23 samples were from post-induction time point only, to explore the utility of baseline immunophenotype (IPT) for MRD assessment. Single-tube 10-color panel was used both at diagnosis and MRD time points. Out of 281 patients, 31.67% (n = 89) were positive and 68.32% (n = 192) were negative for MRD. Among 258 paired diagnostic and follow-up samples, baseline IPT was required in only 9.31% (24/258) cases which included cases with hematogone pattern and isolated dim to negative CD10 expression patterns. Comparison of baseline IPT with post-induction MRD positive samples showed a change in expression of at least one antigen in 94.04% cases. Although the immunophenotypic change in expression of various antigens is frequent in post-induction samples of B-ALL, it does not adversely impact the MRD assessment. In conclusion, the baseline IPT is required in less than 10% of B-ALL, specifically those with hematogone pattern and/or dim to negative expression of CD10. Hence, a combination of DFN and LAIP approach is recommended for reliable MRD assessment.
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Affiliation(s)
- Nupur Das
- Laboratory Oncology Unit, Dr B.R. Ambedkar IRCH, All India Institute of Medical Sciences (AIIMS), New Delhi, 110029, India
| | - Ritu Gupta
- Laboratory Oncology Unit, Dr B.R. Ambedkar IRCH, All India Institute of Medical Sciences (AIIMS), New Delhi, 110029, India.
| | - Sanjeev Kumar Gupta
- Laboratory Oncology Unit, Dr B.R. Ambedkar IRCH, All India Institute of Medical Sciences (AIIMS), New Delhi, 110029, India
| | - Sameer Bakhshi
- Department of Medical Oncology, Dr B.R. Ambedkar IRCH, AIIMS, New Delhi, India
| | - Rachna Seth
- Department of Pediatrics, AIIMS, New Delhi, India
| | - Chandan Kumar
- Laboratory Oncology Unit, Dr B.R. Ambedkar IRCH, All India Institute of Medical Sciences (AIIMS), New Delhi, 110029, India
| | - Sandeep Rai
- Laboratory Oncology Unit, Dr B.R. Ambedkar IRCH, All India Institute of Medical Sciences (AIIMS), New Delhi, 110029, India
| | - Saroj Singh
- Laboratory Oncology Unit, Dr B.R. Ambedkar IRCH, All India Institute of Medical Sciences (AIIMS), New Delhi, 110029, India
| | - Vijay Kumar Prajapati
- Laboratory Oncology Unit, Dr B.R. Ambedkar IRCH, All India Institute of Medical Sciences (AIIMS), New Delhi, 110029, India
| | - Ajay Gogia
- Department of Medical Oncology, Dr B.R. Ambedkar IRCH, AIIMS, New Delhi, India
| | - Ranjit Kumar Sahoo
- Department of Medical Oncology, Dr B.R. Ambedkar IRCH, AIIMS, New Delhi, India
| | - Atul Sharma
- Department of Medical Oncology, Dr B.R. Ambedkar IRCH, AIIMS, New Delhi, India
| | - Lalit Kumar
- Department of Medical Oncology, Dr B.R. Ambedkar IRCH, AIIMS, New Delhi, India
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Correia RP, Bento LC, de Sousa FA, Barroso RDS, Campregher PV, Bacal NS. How I investigate minimal residual disease in acute lymphoblastic leukemia. Int J Lab Hematol 2021; 43:354-363. [PMID: 33423385 DOI: 10.1111/ijlh.13463] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 12/21/2020] [Accepted: 12/27/2020] [Indexed: 10/22/2022]
Abstract
Minimal Residual Disease (MRD) is the most important independent prognostic factor in acute lymphoblastic leukemia (ALL) and refers to the deep level of measurable disease in cases with complete remission by conventional pathologic analysis, especially by cytomorphology. MRD can be detected by multiparametric flow cytometry, molecular approaches such as quantitative polymerase chain reaction for immunoglobulin and T-cell receptor (IG/TR) gene rearrangements or fusion genes transcript, and high-throughput sequencing for IG/TR. Despite the proven clinical usefulness in detecting MRD, these methods have differences in sensitivity, specificity, applicability, turnaround time and cost. Knowing and understanding these differences, as well as the principles and limitations of each technology, is essential to laboratory standardization and correct interpretation of MRD results in line with treatment time points, therapeutic settings, and clinical trials. Here, we review the methodological approaches to measure MRD in ALL and discuss the advantages and limitations of the most commonly used techniques.
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Affiliation(s)
- Rodolfo P Correia
- Clinical Pathology Laboratory, Flow Cytometry Division, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Laiz C Bento
- Clinical Pathology Laboratory, Flow Cytometry Division, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Flávia A de Sousa
- Clinical Pathology Laboratory, Flow Cytometry Division, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Rodrigo de S Barroso
- Clinical Pathology Laboratory, Flow Cytometry Division, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Paulo V Campregher
- Clinical Pathology Laboratory, Molecular Genetics Division, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Nydia S Bacal
- Clinical Pathology Laboratory, Flow Cytometry Division, Hospital Israelita Albert Einstein, São Paulo, Brazil.,Centro de Hematologia de São Paulo, São Paulo, Brazil
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IgH gene rearrangement by PCR as an adjunct to flow cytometric analysis for the detection of minimal residual disease in patients with B lymphoblastic leukemia. J Hematop 2020. [DOI: 10.1007/s12308-020-00406-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Abstract
Acute lymphoblastic leukaemia develops in both children and adults, with a peak incidence between 1 year and 4 years. Most acute lymphoblastic leukaemia arises in healthy individuals, and predisposing factors such as inherited genetic susceptibility or environmental exposure have been identified in only a few patients. It is characterised by chromosomal abnormalities and genetic alterations involved in differentiation and proliferation of lymphoid precursor cells. Along with response to treatment, these abnormalities are important prognostic factors. Disease-risk stratification and the development of intensified chemotherapy protocols substantially improves the outcome of patients with acute lymphoblastic leukaemia, particularly in children (1-14 years), but also in adolescents and young adults (15-39 years). However, the outcome of older adults (≥40 years) and patients with relapsed or refractory acute lymphoblastic leukaemia remains poor. New immunotherapeutic strategies, such as monoclonal antibodies and chimeric antigen receptor (CAR) T cells, are being developed and over the next few years could change the options for acute lymphoblastic leukaemia treatment.
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Affiliation(s)
- Florent Malard
- Department of Clinical Hematology and Cellular Therapy, Saint-Antoine Hospital, AP-HP, Sorbonne University, Paris, France; Sorbonne University, INSERM, Saint-Antoine Research Centre, Paris, France
| | - Mohamad Mohty
- Department of Clinical Hematology and Cellular Therapy, Saint-Antoine Hospital, AP-HP, Sorbonne University, Paris, France; Sorbonne University, INSERM, Saint-Antoine Research Centre, Paris, France.
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Panda SS, Radhakrishnan V, Ganesan P, Rajendranath R, Ganesan TS, Rajalekshmy KR, Bhola RK, Das H, Sagar TG. Flow Cytometry Based MRD and Its Impact on Survival Outcome in Children and Young Adults with ALL: A Prospective Study from a Tertiary Cancer Centre in Southern India. Indian J Hematol Blood Transfus 2020; 36:300-308. [PMID: 32425381 PMCID: PMC7229125 DOI: 10.1007/s12288-019-01228-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Accepted: 11/02/2019] [Indexed: 11/24/2022] Open
Abstract
Presence of minimal residual disease (MRD) following induction chemotherapy is a well-recognized risk factor to predict relapse in acute lymphoblastic leukemia (ALL). There is paucity of data on MRD and outcome in ALL from India. We share our experience in establishing a flow cytometry-based MRD assay for ALL with emphasis on determination of the number of patients who had MRD on day 35 of induction therapy and its correlation with outcome and other prognostic factors. We prospectively studied MRD in patients with ALL less than 25 years who achieved morphological complete remission with induction therapy. The initial series consisted of 104 patients with ALL. Ninety-two patients had bone marrow samples collected on day 35 of remission induction chemotherapy that was adequate for MRD. Strategy of monitoring MRD was based on flow cytometry using six color staining according the leukemia associated immunophenotype found at diagnosis. Data analysis was done using Fisher exact test. The median age was 8.5 years (range 0.9-22 years). Thirty-seven out of ninety-two patients (40.2%) had MRD at end of induction. MRD on day 35 was between 0.01 and 0.1% in 18.9% of patients, between 0.1 and 1% in 59.5% and more than 1% in 21.6% patients. Among the patients who had MRD, 16.7% had favourable cytogenetics, 60% had intermediate and 13.3% had high-risk cytogenetics. The presence or absence of residual leukemia by flow cytometry at day 35 was not significantly related to age (p = 1.0), male gender (p = 0.08) hyperleukocytosis (p = 0.25) or day 8 blast clearance (p = 0.21). However, T cell phenotype (p < 0.001) was significantly associated with MRD. The 5-year event free survival (EFS) for patients who had MRD versus those who did not was 69% and 61.1% respectively (p = 0.41). The 5-year overall survival (OS) for patients who had MRD versus those who did not was 72.5% and 61.1% respectively (p = 0.33). Flow cytometric techniques can be applied to monitor MRD in patients of ALL undergoing induction therapy. Our results suggest MRD correlates with certain known prognostic factors. Though the EFS and OS was lower in MRD positive patients, the results were not statistically significant probably because of the small sample size.
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Affiliation(s)
- Soumya Surath Panda
- Department of Medical Oncology, IMS and SUM Hospital, Siksha O Anusandhan University, Bhubaneswar, Odisha India
| | | | - Prasanth Ganesan
- Departments of Medical Oncology, Cancer Institute (WIA), Adyar, Chennai, Tamil Nadu 600020 India
| | - Rejiv Rajendranath
- Departments of Medical Oncology, Cancer Institute (WIA), Adyar, Chennai, Tamil Nadu 600020 India
| | - Trivadi S. Ganesan
- Departments of Medical Oncology, Cancer Institute (WIA), Adyar, Chennai, Tamil Nadu 600020 India
| | | | - Rajesh Kumar Bhola
- Department of Medical Oncology, IMS and SUM Hospital, Siksha O Anusandhan University, Bhubaneswar, Odisha India
| | - Hemlata Das
- Department of Medical Oncology, IMS and SUM Hospital, Siksha O Anusandhan University, Bhubaneswar, Odisha India
| | - Tenali Gnana Sagar
- Departments of Medical Oncology, Cancer Institute (WIA), Adyar, Chennai, Tamil Nadu 600020 India
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Abou Dalle I, Jabbour E, Short NJ. Evaluation and management of measurable residual disease in acute lymphoblastic leukemia. Ther Adv Hematol 2020; 11:2040620720910023. [PMID: 32215194 PMCID: PMC7065280 DOI: 10.1177/2040620720910023] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Accepted: 01/27/2020] [Indexed: 12/16/2022] Open
Abstract
With standard chemotherapy regimens for adults with acute lymphoblastic leukemia, approximately 90% of patients achieve complete remission. However, up to half of patients have persistent minimal/measurable residual disease (MRD) not recognized by routine microscopy, which constitutes the leading determinant of relapse. Many studies in pediatric and adult populations have demonstrated that achievement of MRD negativity after induction chemotherapy or during consolidation is associated with significantly better long-term outcomes, and MRD status constitutes an independently prognostic marker, often superseding other conventional risk factors. Persistence of MRD after intensive chemotherapy is indicative of treatment refractoriness and warrants alternative therapeutic approaches including allogeneic stem cell transplantation, blinatumomab, or investigational therapies such as inotuzumab ozogamicin or chimeric antigen receptor T cells. Furthermore, the incorporation of novel monoclonal antibodies or potent BCR-ABL1 tyrosine kinase inhibitors, such as ponatinib into frontline treatment may have the advantage of achieving higher rates of MRD negativity while minimizing chemotherapy-related toxicities. Many studies are therefore ongoing to determine whether this strategy can improve cure rates without the need for allogeneic stem cell transplantation.
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Affiliation(s)
- Iman Abou Dalle
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Division of Hematology and Oncology, American University of Beirut, Beirut, Lebanon
| | - Elias Jabbour
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Nicholas J. Short
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Box 428, Houston, TX 77030, USA
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11
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Modvig S, Madsen HO, Siitonen SM, Rosthøj S, Tierens A, Juvonen V, Osnes LTN, Vålerhaugen H, Hultdin M, Thörn I, Matuzeviciene R, Stoskus M, Marincevic M, Fogelstrand L, Lilleorg A, Toft N, Jónsson OG, Pruunsild K, Vaitkeviciene G, Vettenranta K, Lund B, Abrahamsson J, Schmiegelow K, Marquart HV. Minimal residual disease quantification by flow cytometry provides reliable risk stratification in T-cell acute lymphoblastic leukemia. Leukemia 2019; 33:1324-1336. [PMID: 30552401 DOI: 10.1038/s41375-018-0307-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 10/26/2018] [Accepted: 10/31/2018] [Indexed: 01/22/2023]
Abstract
Minimal residual disease (MRD) measured by PCR of clonal IgH/TCR rearrangements predicts relapse in T-cell acute lymphoblastic leukemia (T-ALL) and serves as risk stratification tool. Since 10% of patients have no suitable PCR-marker, we evaluated flowcytometry (FCM)-based MRD for risk stratification. We included 274 T-ALL patients treated in the NOPHO-ALL2008 protocol. MRD was measured by six-color FCM and real-time quantitative PCR. Day 29 PCR-MRD (cut-off 10-3) was used for risk stratification. At diagnosis, 93% had an FCM-marker for MRD monitoring, 84% a PCR-marker, and 99.3% (272/274) had a marker when combining the two. Adjusted for age and WBC, the hazard ratio for relapse was 3.55 (95% CI 1.4-9.0, p = 0.008) for day 29 FCM-MRD ≥ 10-3 and 5.6 (95% CI 2.0-16, p = 0.001) for PCR-MRD ≥ 10-3 compared with MRD < 10-3. Patients stratified to intermediate-risk therapy on day 29 with MRD 10-4-<10-3 had a 5-year event-free survival similar to intermediate-risk patients with MRD < 10-4 or undetectable, regardless of method for monitoring. Patients with day 15 FCM-MRD < 10-4 had a cumulative incidence of relapse of 2.3% (95% CI 0-6.8, n = 59). Thus, FCM-MRD allows early identification of patients eligible for reduced intensity therapy, but this needs further studies. In conclusion, FCM-MRD provides reliable risk prediction for T-ALL and can be used for stratification when no PCR-marker is available.
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Affiliation(s)
- S Modvig
- Department of Clinical Immunology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - H O Madsen
- Department of Clinical Immunology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - S M Siitonen
- Helsinki University Ctrl. Hospital, Helsinki, Finland
| | - S Rosthøj
- Section of Biostatistics, University of Copenhagen, Copenhagen, Denmark
| | - A Tierens
- Laboratory Medicine Program, University Health Network and University of Toronto, Toronto, ON, Canada
- Department of Pathology, University Hospital of Oslo, Oslo, Norway
| | - V Juvonen
- Department of Clinical Chemistry and Laboratory Division, University of Turku and Turku University Hospital, Turku, Finland
| | - L T N Osnes
- Department of Immunology, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - H Vålerhaugen
- Department of Pathology, Laboratory of Molecular Pathology, Oslo University Hospital, Oslo, Norway
| | - M Hultdin
- Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden
| | - I Thörn
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - R Matuzeviciene
- Department of Physiology, Biochemistry, Microbiology and Laboratory Medicine, Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, Vilnius, Lithuania
- Centre of Laboratory Medicine, Vilnius University Hospital Santaros Klinikos, Vilnius, Lithuania
| | - M Stoskus
- Hematology, Oncology and Transfusion Medicine Centre, Vilnius University Hospital Santaros Klinikos, Vilnius, Lithuania
| | - M Marincevic
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - L Fogelstrand
- Department of Clinical Chemistry, Sahlgrenska University Hospital, and Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - A Lilleorg
- Department of Clinical Immunology, North Estonia Medical Centre, Tallinn, Estonia
| | - N Toft
- Department of Hematology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - O G Jónsson
- Children's Hospital, Landspitali University Hospital, Reykjavik, Iceland
| | - K Pruunsild
- Tallinn Children's Hospital, Tallinn, Estonia
| | - G Vaitkeviciene
- Children's Hospital, Affiliate of Vilnius University Hospital Santariskiu Klinikos, Vilnius, Lithuania
| | - K Vettenranta
- Department of Pediatrics, Helsinki University Children's Hospital and University of Helsinki, Helsinki, Finland
| | - B Lund
- Department of Pediatrics, St. Olavs University Hospital and Department of Clinical and Molecular Medicine, NTNU, Trondheim, Norway
| | - J Abrahamsson
- Institution of Clinical Sciences, Department of Pediatrics, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - K Schmiegelow
- Department of Pediatrics and Adolescent Medicine, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- The Institute of Clinical medicine, The Faculty of Medicine, University of Copenhagen, Copenhagen, Denmark
| | - H V Marquart
- Department of Clinical Immunology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.
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12
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Short NJ, Jabbour E, Albitar M, de Lima M, Gore L, Jorgensen J, Logan AC, Park J, Ravandi F, Shah B, Radich J, Kantarjian H. Recommendations for the assessment and management of measurable residual disease in adults with acute lymphoblastic leukemia: A consensus of North American experts. Am J Hematol 2019; 94:257-265. [PMID: 30394566 DOI: 10.1002/ajh.25338] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 10/31/2018] [Indexed: 12/13/2022]
Abstract
Measurable residual disease (MRD) that persists after initial therapy is a powerful predictor of relapse and survival in acute lymphoblastic leukemia (ALL). However, the optimal use of this information to influence therapeutic decisions is controversial. Herein, we comprehensively review the role of MRD assessment in adults with ALL, including methods to quantify residual leukemia cells during remission, prognostic impact of MRD across ALL subtypes, and available therapeutic approaches to eradicate MRD. This review presents consensus statements and provides an evidence-based framework for practicing hematologists and oncologists to use MRD information to make rational treatment decisions in adult patients with ALL.
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Affiliation(s)
| | - Elias Jabbour
- The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Maher Albitar
- NeoGenomics Laboratories, Inc.; Aliso Viejo California
| | | | - Lia Gore
- Children's Hospital Colorado and University of Colorado Cancer Center; Aurora Colorado
| | | | - Aaron C. Logan
- University of California San Francisco; San Francisco California
| | - Jae Park
- Memorial Sloan Kettering Cancer Center; New York New York
| | - Farhad Ravandi
- The University of Texas MD Anderson Cancer Center; Houston Texas
| | | | - Jerald Radich
- Fred Hutchinson Cancer Research Center; Seattle Western Australia
| | - Hagop Kantarjian
- The University of Texas MD Anderson Cancer Center; Houston Texas
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13
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Bouriche L, Bernot D, Nivaggioni V, Arnoux I, Loosveld M. Detection of Minimal Residual Disease in B Cell Acute Lymphoblastic Leukemia Using an Eight-Color Tube with Dried Antibody Reagents. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019; 96:158-163. [PMID: 30698327 DOI: 10.1002/cyto.b.21766] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 12/13/2018] [Accepted: 01/09/2019] [Indexed: 11/12/2022]
Abstract
BACKGROUND Flow cytometry is a powerful tool for the detection of minimal residual disease (MRD) of B cell precursor acute lymphoblastic leukemia (BCP-ALL) patients. However, the staining process and the choice of antibodies rely on laboratory expertise and may be source of variability or technical errors. Recently, Beckman Coulter commercialized a ready to use tube with dried format reagents for BCP-ALL MRD detection. The aim of this study is to evaluate the applicability of this tube and to compare it to a conventional (liquid format reagents) method. METHODS Thirty-one samples from B ALL patients were analyzed: 19 bone marrow (BM) aspirations, 10 peripheral blood (PB) samples and 2 cerebrospinal fluids at different stages of the follow-up. In addition, we tested 5 bone marrow samples mixed into non-pathological (control) bone marrow. The dried format tube included seven antibodies: CD45Kro, CD58FITC, CD34ECD, CD10PC5.5, CD19PC7, CD38AA700, CD20AA750, with possibility of additional antibodies for blast markers identified at diagnosis. For comparison, a liquid format tube was prepared, and considered as the reference. RESULTS This tube was validated for daily routine laboratory, with satisfying qualitative (MRD + or MRD-) and quantitative (MRD percentages) correlation with the reference tube. CONCLUSION With this single dried format tube, we showed interesting results for BCP-ALL MRD detection in the aim of standardization and reliable interlaboratory results. It allows accurate MRD detection including low levels (10-4), and offers possibility to increase performance (supplementary antibody) within a preestablished effective antibody panel for BCP-ALL MRD. © 2018 International Clinical Cytometry Society.
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Affiliation(s)
- Lakhdar Bouriche
- Assistance Publique Hôpitaux de Marseille, Laboratoire d'Hématologie, Hôpital de la Timone, Marseille, France
| | - Denis Bernot
- Assistance Publique Hôpitaux de Marseille, Laboratoire d'Hématologie, Hôpital de la Timone, Marseille, France
| | - Vanessa Nivaggioni
- Assistance Publique Hôpitaux de Marseille, Laboratoire d'Hématologie, Hôpital de la Timone, Marseille, France
| | - Isabelle Arnoux
- Assistance Publique Hôpitaux de Marseille, Laboratoire d'Hématologie, Hôpital de la Timone, Marseille, France
| | - Marie Loosveld
- Assistance Publique Hôpitaux de Marseille, Laboratoire d'Hématologie, Hôpital de la Timone, Marseille, France.,CNRS, INSERM, CIML, Aix Marseille University, Marseille, France
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14
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Béné MC, Eveillard M. Evaluation of minimal residual disease in childhood ALL. Int J Lab Hematol 2018; 40 Suppl 1:104-108. [DOI: 10.1111/ijlh.12835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 04/04/2018] [Indexed: 11/26/2022]
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15
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How do we measure MRD in ALL and how should measurements affect decisions. Re: Treatment and prognosis? Best Pract Res Clin Haematol 2017; 30:237-248. [DOI: 10.1016/j.beha.2017.07.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 07/03/2017] [Indexed: 12/18/2022]
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16
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Berry DA, Zhou S, Higley H, Mukundan L, Fu S, Reaman GH, Wood BL, Kelloff GJ, Jessup JM, Radich JP. Association of Minimal Residual Disease With Clinical Outcome in Pediatric and Adult Acute Lymphoblastic Leukemia: A Meta-analysis. JAMA Oncol 2017; 3:e170580. [PMID: 28494052 DOI: 10.1001/jamaoncol.2017.0580] [Citation(s) in RCA: 352] [Impact Index Per Article: 50.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Importance Minimal residual disease (MRD) refers to the presence of disease in cases deemed to be in complete remission by conventional pathologic analysis. Assessing the association of MRD status following induction therapy in patients with acute lymphoblastic leukemia (ALL) with relapse and mortality may improve the efficiency of clinical trials and accelerate drug development. Objective To quantify the relationships between event-free survival (EFS) and overall survival (OS) with MRD status in pediatric and adult ALL using publications of clinical trials and other databases. Data Sources Clinical studies in ALL identified via searches of PubMed, MEDLINE, and clinicaltrials.gov. Study Selection Our search and study screening process adhered to the PRISMA Guidelines. Studies that addressed EFS or OS by MRD status in patients with ALL were included; reviews, abstracts, and studies with fewer than 30 patients or insufficient MRD description were excluded. Data Extraction and Synthesis Study sample size, patient age, follow-up time, timing of MRD assessment (postinduction or consolidation), MRD detection method, phenotype/genotype (B cell, T cell, Philadelphia chromosome), and EFS and OS. Searches of PubMed and MEDLINE identified 566 articles. A parallel search on clinicaltrials.gov found 67 closed trials and 62 open trials as of 2014. Merging results of 2 independent searches and applying exclusions gave 39 publications in 3 arms of patient populations (adult, pediatric, and mixed). We performed separate meta-analyses for each of these 3 subpopulations. Results The 39 publications comprised 13 637 patients: 16 adult studies (2076 patients), 20 pediatric (11 249 patients), and 3 mixed (312 patients). The EFS hazard ratio (HR) for achieving MRD negativity is 0.23 (95% Bayesian credible interval [BCI] 0.18-0.28) for pediatric patients and 0.28 (95% BCI, 0.24-0.33) for adults. The respective HRs in OS are 0.28 (95% BCI, 0.19-0.41) and 0.28 (95% BCI, 0.20-0.39). The effect was similar across all subgroups and covariates. Conclusions and Relevance The value of having achieved MRD negativity is substantial in both pediatric and adult patients with ALL. These results are consistent across therapies, methods of and times of MRD assessment, cutoff levels, and disease subtypes. Minimal residual disease status warrants consideration as an early measure of disease response for evaluating new therapies, improving the efficiency of clinical trials, accelerating drug development, and for regulatory approval. A caveat is that an accelerated approval of a particular new drug using an intermediate end point, such as MRD, would require confirmation using traditional efficacy end points.
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Affiliation(s)
- Donald A Berry
- Department of Biostatistics, The University of Texas M.D. Anderson Cancer Center, Houston
| | - Shouhao Zhou
- Department of Biostatistics, The University of Texas M.D. Anderson Cancer Center, Houston
| | | | | | - Shuangshuang Fu
- University of Texas Health Science Center at Houston, Houston
| | | | - Brent L Wood
- University of Washington School of Medicine, St Louis, Missouri
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17
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Kotrova M, Trka J, Kneba M, Brüggemann M. Is Next-Generation Sequencing the way to go for Residual Disease Monitoring in Acute Lymphoblastic Leukemia? Mol Diagn Ther 2017; 21:481-492. [DOI: 10.1007/s40291-017-0277-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Chen X, Wood BL. Monitoring minimal residual disease in acute leukemia: Technical challenges and interpretive complexities. Blood Rev 2017; 31:63-75. [DOI: 10.1016/j.blre.2016.09.006] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 09/20/2016] [Accepted: 09/30/2016] [Indexed: 01/04/2023]
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19
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Short NJ, Jabbour E. Minimal Residual Disease in Acute Lymphoblastic Leukemia: How to Recognize and Treat It. Curr Oncol Rep 2017; 19:6. [DOI: 10.1007/s11912-017-0565-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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20
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Sala Torra O, Othus M, Williamson DW, Wood B, Kirsch I, Robins H, Beppu L, O'Donnell MR, Forman SJ, Appelbaum FR, Radich JP. Next-Generation Sequencing in Adult B Cell Acute Lymphoblastic Leukemia Patients. Biol Blood Marrow Transplant 2017; 23:691-696. [PMID: 28062215 DOI: 10.1016/j.bbmt.2016.12.639] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 12/28/2016] [Indexed: 12/16/2022]
Abstract
We used next-generation sequencing (NGS) of the immunoglobulin genes to evaluate residual disease in 153 specimens from 32 patients with adult B cell acute lymphoblastic leukemia enrolled in a single multicenter study. The sequencing results were compared with multiparameter flow cytometry (MFC) data in 66 specimens (25 patients) analyzed by both methods. There was a strong concordance (82%) between the methods in the qualitative determination of the presence of disease. However, in 17% of cases, leukemia was detected by sequencing but not by MFC. In 54 bone marrow (BM) and peripheral blood (PB) paired specimens, the burden of leukemia detected by NGS was lower in PB than in BM, although it was still detectable in 68% of the 28 paired specimens with positive BM. Lastly, patients without disease detected by NGS or MFC had a 5-year relapse free survival of > 80%. The results suggest that residual disease detection by immunoglobulin gene sequencing is an extremely sensitive technique and may identify patients that might benefit from transplantation. Moreover, the increased sensitivity of the method may allow frequent peripheral blood testing to supplement marrow sampling to measure disease response.
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Affiliation(s)
- Olga Sala Torra
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington.
| | - Megan Othus
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; SWOG Statistical Center, Seattle, Washington
| | | | - Brent Wood
- Department of Laboratory Medicine, University of Washington, Seattle, Washington
| | - Ilan Kirsch
- Adaptive Biotechnologies, Seattle, Washington
| | - Harlan Robins
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Lan Beppu
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Margaret R O'Donnell
- Department of Hematology & Hematopoietic Cell Transplantation, City of Hope Medical Center, Duarte, California
| | - Stephen J Forman
- Department of Hematology & Hematopoietic Cell Transplantation, City of Hope Medical Center, Duarte, California
| | - Frederick R Appelbaum
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Jerald P Radich
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
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21
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Standardized flow cytometry for highly sensitive MRD measurements in B-cell acute lymphoblastic leukemia. Blood 2016; 129:347-357. [PMID: 27903527 DOI: 10.1182/blood-2016-07-726307] [Citation(s) in RCA: 259] [Impact Index Per Article: 32.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 11/23/2016] [Indexed: 12/12/2022] Open
Abstract
A fully-standardized EuroFlow 8-color antibody panel and laboratory procedure was stepwise designed to measure minimal residual disease (MRD) in B-cell precursor (BCP) acute lymphoblastic leukemia (ALL) patients with a sensitivity of ≤10-5, comparable to real-time quantitative polymerase chain reaction (RQ-PCR)-based MRD detection via antigen-receptor rearrangements. Leukocyte markers and the corresponding antibodies and fluorochromes were selected based on their contribution in separating BCP-ALL cells from normal/regenerating BCP cells in multidimensional principal component analyses. After 5 multicenter design-test-evaluate-redesign phases with a total of 319 BCP-ALL patients at diagnosis, two 8-color antibody tubes were selected, which allowed separation between normal and malignant BCP cells in 99% of studied patients. These 2 tubes were tested with a new erythrocyte bulk-lysis protocol allowing acquisition of high cell numbers in 377 bone marrow follow-up samples of 178 BCP-ALL patients. Comparison with RQ-PCR-based MRD data showed a clear positive relation between the percentage concordant cases and the number of cells acquired. For those samples with >4 million cells acquired, concordant results were obtained in 93% of samples. Most discordances were clarified upon high-throughput sequencing of antigen-receptor rearrangements and blind multicenter reanalysis of flow cytometric data, resulting in an unprecedented concordance of 98% (97% for samples with MRD < 0.01%). In conclusion, the fully standardized EuroFlow BCP-ALL MRD strategy is applicable in >98% of patients with sensitivities at least similar to RQ-PCR (≤10-5), if sufficient cells (>4 × 106, preferably more) are evaluated.
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22
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Salina TDDC, Ferreira YA, Alves EB, Ferreira CM, De Paula EV, Mira MT, Passos LDM. Role of peripheral blood minimum residual disease at day 8 of induction therapy in high-risk pediatric patients with acute lymphocytic leukemia. Sci Rep 2016; 6:31179. [PMID: 27526794 PMCID: PMC4985643 DOI: 10.1038/srep31179] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 07/13/2016] [Indexed: 12/28/2022] Open
Abstract
Risk stratification and treatment intensification, based on minimal residual disease (MRD) mensurement, changed the prognosis of pediatric patients with acute lymphocytic leukemia (ALL). The main aim of this study was to investigate whether peripheral blood (PB) MRD measurement at day 8 (D8) could predict the risk stratification category determined by bone marrow (BM) MRD at day 15 (D15). The study was performed prospectively, in a cohort of 40 children with B-lineage ALL, adopting the protocol of the Brazilian Cooperative Group of the Treatment Childhood Leukemia (GBTLI-2009). MRD was detected by flow cytometry (FC) using a simplifed panel that can reliably identify MRD at early phases of induction therapy. Upon diagnosis, the proportion of low and high-risk patients, was 24:16 (60%:40%). The main result of our study demonstrated the potential of D8 MRD in anticipating of week the risk stratification of high-risk patients as determined by D15 BM MRD. In these patients D8 MRD level of 1% was able to segregate high risk fast responders from high risk slow responders (p = 0.0097). This result could represent an opportunity for early treatment intensification, as already performed in some protocols.
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Affiliation(s)
- Thais Ditolvo da Costa Salina
- Hematology and Hemotherapy Foundation of Amazonas (HEMOAM), Manaus, AM, Brazil
- Federal University of Amazonas (UFAM), Manaus, Amazonas, Brazil
| | | | - Eliana Brasil Alves
- Hematology and Hemotherapy Foundation of Amazonas (HEMOAM), Manaus, AM, Brazil
- Federal University of Amazonas (UFAM), Manaus, Amazonas, Brazil
| | | | - Erich Vinícius De Paula
- Hematology and Hemotherapy Foundation of Amazonas (HEMOAM), Manaus, AM, Brazil
- Hematology and Hemotherapy Center, University of Campinas, Campinas, São Paulo, Brazil
| | - Marcelo Távora Mira
- Hematology and Hemotherapy Foundation of Amazonas (HEMOAM), Manaus, AM, Brazil
- Pontifícia Universidade Católica do Paraná, Graduate Program in Health Sciences, Curitiba, Parana, Brazil
| | - Leny da Mota Passos
- Hematology and Hemotherapy Foundation of Amazonas (HEMOAM), Manaus, AM, Brazil
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23
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Current Strategies for the Detection of Minimal Residual Disease in Childhood Acute Lymphoblastic Leukemia. Mediterr J Hematol Infect Dis 2016; 8:e2016024. [PMID: 27158437 PMCID: PMC4848021 DOI: 10.4084/mjhid.2016.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 03/25/2016] [Indexed: 01/09/2023] Open
Abstract
Acute lymphoblastic leukemia (ALL) is the most common cancer in children. Current treatment strategies for childhood ALL result in long-term remission for approximately 90% of patients. However, the therapeutic response is worse among those who relapse. Several risk stratification approaches based on clinical and biological aspects have been proposed to intensify treatment in patients with high risk of relapse and reduce toxicity on those with a greater probability of cure. The detection of residual leukemic cells (minimal residual disease, MRD) is the most important prognostic factor to identify high-risk patients, allowing redefinition of chemotherapy. In the last decades, several standardized research protocols evaluated MRD using immunophenotyping by flow cytometry and/or real-time quantitative polymerase chain reaction at different time points during treatment. Both methods are highly sensitive (10−3 a 10−5), but expensive, complex, and, because of that, require qualified staff and frequently are restricted to reference centers. The aim of this article was to review technical aspects of immunophenotyping by flow cytometry and real-time quantitative polymerase chain reaction to evaluate MRD in ALL.
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24
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Parekh C, Gaynon PS, Abdel-Azim H. End of induction minimal residual disease alone is not a useful determinant for risk stratified therapy in pediatric T-cell acute lymphoblastic leukemia. Pediatr Blood Cancer 2015; 62:2040-3. [PMID: 25976383 PMCID: PMC4583337 DOI: 10.1002/pbc.25582] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 04/15/2015] [Indexed: 01/19/2023]
Abstract
The role of end of induction minimal residual disease (MRD) as determined by flow cytometry for treatment assignment in pediatric T-cell acute lymphoblastic leukemia (T-ALL) is not well defined. We studied 33 children with newly diagnosed T-ALL. Thirty-two of 33 patients remain in continuous complete remission at a median of 4 years. Nineteen patients were MRD positive at the end of induction and all remain in remission with augmented Berlin Frankfurt Münster-based therapy. One patient underwent hematopoietic stem cell transplant for rising MRD. Persistent end of induction MRD alone is not an indication to alter therapy in pediatric T-ALL.
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Affiliation(s)
- Chintan Parekh
- Children’s Center for Cancer and Blood Disease, Children’s Hospital Los Angeles, 4650 Sunset Boulevard, Los Angeles, CA.,Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Paul S. Gaynon
- Children’s Center for Cancer and Blood Disease, Children’s Hospital Los Angeles, 4650 Sunset Boulevard, Los Angeles, CA.,Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Hisham Abdel-Azim
- Children’s Center for Cancer and Blood Disease, Children’s Hospital Los Angeles, 4650 Sunset Boulevard, Los Angeles, CA.,Keck School of Medicine, University of Southern California, Los Angeles, CA
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25
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Minimal residual disease diagnostics in acute lymphoblastic leukemia: need for sensitive, fast, and standardized technologies. Blood 2015; 125:3996-4009. [PMID: 25999452 DOI: 10.1182/blood-2015-03-580027] [Citation(s) in RCA: 334] [Impact Index Per Article: 37.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 05/10/2015] [Indexed: 12/26/2022] Open
Abstract
Monitoring of minimal residual disease (MRD) has become routine clinical practice in frontline treatment of virtually all childhood acute lymphoblastic leukemia (ALL) and in many adult ALL patients. MRD diagnostics has proven to be the strongest prognostic factor, allowing for risk group assignment into different treatment arms, ranging from significant treatment reduction to mild or strong intensification. Also in relapsed ALL patients and patients undergoing stem cell transplantation, MRD diagnostics is guiding treatment decisions. This is also why the efficacy of innovative drugs, such as antibodies and small molecules, are currently being evaluated with MRD diagnostics within clinical trials. In fact, MRD measurements might well be used as a surrogate end point, thereby significantly shortening the follow-up. The MRD techniques need to be sensitive (≤10(-4)), broadly applicable, accurate, reliable, fast, and affordable. Thus far, flow cytometry and polymerase chain reaction (PCR) analysis of rearranged immunoglobulin and T-cell receptor genes (allele-specific oligonucleotide [ASO]-PCR) are claimed to meet these criteria, but classical flow cytometry does not reach a solid 10(-4), whereas classical ASO-PCR is time-consuming and labor intensive. Therefore, 2 high-throughput technologies are being explored, ie, high-throughput sequencing and next-generation (multidimensional) flow cytometry, both evaluating millions of sequences or cells, respectively. Each of them has specific advantages and disadvantages.
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26
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Salari F, Shahjahani M, Shahrabi S, Saki N. Minimal residual disease in acute lymphoblastic leukemia: optimal methods and clinical relevance, pitfalls and recent approaches. Med Oncol 2014; 31:266. [PMID: 25287907 DOI: 10.1007/s12032-014-0266-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 09/20/2014] [Indexed: 11/29/2022]
Abstract
After advances in experimental and clinical testing, minimal residual disease (MRD) assay results are considered a determining factor in treatment of acute lymphoblastic leukemia patients. According to MRD assay results, bone marrow (BM) leukemic burden and the rate of its decline after treatment can be directly evaluated. Detailed knowledge of the leukemic burden in BM can minimize toxicity and treatment complications in patients by tailoring the therapeutic dose based on patients' conditions. In addition, reduction of MRD before allo-HSCT is an important prerequisite for reception of transplant by the patient. In direct examination of MRD by morphological methods (even by a professional hematologist), leukemic cells can be under- or over-estimated due to similarity with hematopoietic precursor cells. As a result, considering the importance of MRD, it is necessary to use other methods including flow cytometry, polymerase chain reaction (PCR) amplification and RQ-PCR to detect MRD. Each of these methods has its own advantages and disadvantages in terms of accuracy and sensitivity. In this review article, different MRD assay methods and their sensitivity, correlation of MRD assay results with clinical symptoms of the patient as well as pitfalls in results of these methods are evaluated. In the final section, recent advances in MRD have been addressed.
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Affiliation(s)
- Fatemeh Salari
- Health Research Institute, Research Center of Thalassemia and Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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27
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Logan AC, Vashi N, Faham M, Carlton V, Kong K, Buño I, Zheng J, Moorhead M, Klinger M, Zhang B, Waqar A, Zehnder JL, Miklos DB. Immunoglobulin and T cell receptor gene high-throughput sequencing quantifies minimal residual disease in acute lymphoblastic leukemia and predicts post-transplantation relapse and survival. Biol Blood Marrow Transplant 2014; 20:1307-13. [PMID: 24769317 DOI: 10.1016/j.bbmt.2014.04.018] [Citation(s) in RCA: 106] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 04/17/2014] [Indexed: 01/11/2023]
Abstract
Minimal residual disease (MRD) quantification is an important predictor of outcome after treatment for acute lymphoblastic leukemia (ALL). Bone marrow ALL burden ≥ 10(-4) after induction predicts subsequent relapse. Likewise, MRD ≥ 10(-4) in bone marrow before initiation of conditioning for allogeneic (allo) hematopoietic cell transplantation (HCT) predicts transplantation failure. Current methods for MRD quantification in ALL are not sufficiently sensitive for use with peripheral blood specimens and have not been broadly implemented in the management of adults with ALL. Consensus-primed immunoglobulin (Ig), T cell receptor (TCR) amplification and high-throughput sequencing (HTS) permit use of a standardized algorithm for all patients and can detect leukemia at 10(-6) or lower. We applied the LymphoSIGHT HTS platform (Sequenta Inc., South San Francisco, CA) to quantification of MRD in 237 samples from 29 adult B cell ALL patients before and after allo-HCT. Using primers for the IGH-VDJ, IGH-DJ, IGK, TCRB, TCRD, and TCRG loci, MRD could be quantified in 93% of patients. Leukemia-associated clonotypes at these loci were identified in 52%, 28%, 10%, 35%, 28%, and 41% of patients, respectively. MRD ≥ 10(-4) before HCT conditioning predicted post-HCT relapse (hazard ratio [HR], 7.7; 95% confidence interval [CI], 2.0 to 30; P = .003). In post-HCT blood samples, MRD ≥10(-6) had 100% positive predictive value for relapse with median lead time of 89 days (HR, 14; 95% CI, 4.7 to 44, P < .0001). The use of HTS-based MRD quantification in adults with ALL offers a standardized approach with sufficient sensitivity to quantify leukemia MRD in peripheral blood. Use of this approach may identify a window for clinical intervention before overt relapse.
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Affiliation(s)
- Aaron C Logan
- Division of Hematology and Blood and Marrow Transplantation, Department of Medicine, University of California, San Francisco, San Francisco, California.
| | - Nikita Vashi
- Division of Blood and Marrow Transplantation, Department of Medicine, Stanford University School of Medicine, Stanford, California
| | - Malek Faham
- Sequenta Inc., South San Francisco, California
| | | | | | - Ismael Buño
- Department of Hematology, Hospital G.U. Gregorio Maranon, Madrid, Spain
| | | | | | | | - Bing Zhang
- Department of Pathology, Stanford University School of Medicine, Stanford, California
| | - Amna Waqar
- Department of Pathology, Stanford University School of Medicine, Stanford, California
| | - James L Zehnder
- Department of Pathology, Stanford University School of Medicine, Stanford, California
| | - David B Miklos
- Division of Blood and Marrow Transplantation, Department of Medicine, Stanford University School of Medicine, Stanford, California
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Gaipa G, Basso G, Biondi A, Campana D. Detection of minimal residual disease in pediatric acute lymphoblastic leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2013; 84:359-69. [DOI: 10.1002/cyto.b.21101] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 04/02/2013] [Accepted: 03/23/2013] [Indexed: 01/22/2023]
Affiliation(s)
- Giuseppe Gaipa
- M. Tettamanti Research Center, Pediatric Clinic University of Milano Bicocca; Monza Italy
| | - Giuseppe Basso
- Laboratorio di Oncoematologia Pediatrica, Department of Pediatrics, University of Padova; Padova Italy
| | - Andrea Biondi
- M. Tettamanti Research Center, Pediatric Clinic University of Milano Bicocca; Monza Italy
| | - Dario Campana
- Department of Pediatrics; National University of Singapore; Singapore
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Improved flow cytometric detection of minimal residual disease in childhood acute lymphoblastic leukemia. Leukemia 2012; 27:635-41. [DOI: 10.1038/leu.2012.231] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Campana D. Should minimal residual disease monitoring in acute lymphoblastic leukemia be standard of care? Curr Hematol Malig Rep 2012; 7:170-7. [PMID: 22373809 DOI: 10.1007/s11899-012-0115-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
In acute lymphoblastic leukemia (ALL), the advent of methods to measure disease not detectable by morphology, ie, minimal residual disease (MRD), has set a new standard to define remission. The clinical importance of MRD has been demonstrated by numerous studies using either flow cytometry or polymerase chain reaction and involving thousands of patients. Results are in remarkable agreement on the association between MRD persistence and risk of subsequent relapse, regardless of the MRD detection method used. More recent data indicate that MRD can also be informative in specific subgroups of ALL patients, such as infants or those with T-lineage ALL. Hence, MRD is now being used in clinical trials to inform treatment decisions and guide patients' clinical management. This article reviews MRD methodologies and clinical applications with emphasis on recently reported technical advances and prognostic associations, and the practical issues related to the implementation of MRD monitoring in the clinic.
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Affiliation(s)
- Dario Campana
- Department of Pediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
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Gaipa G, Cazzaniga G, Valsecchi MG, Panzer-Grümayer R, Buldini B, Silvestri D, Karawajew L, Maglia O, Ratei R, Benetello A, Sala S, Schumich A, Schrauder A, Villa T, Veltroni M, Ludwig WD, Conter V, Schrappe M, Biondi A, Dworzak MN, Basso G. Time point-dependent concordance of flow cytometry and real-time quantitative polymerase chain reaction for minimal residual disease detection in childhood acute lymphoblastic leukemia. Haematologica 2012; 97:1582-93. [PMID: 22581001 DOI: 10.3324/haematol.2011.060426] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Flow cytometric analysis of leukemia-associated immunophenotypes and polymerase chain reaction-based amplification of antigen-receptor genes rearrangements are reliable methods for monitoring minimal residual disease. The aim of this study was to compare the performances of these two methodologies in the detection of minimal residual disease in childhood acute lymphoblastic leukemia. DESIGN AND METHODS Polymerase chain reaction and flow cytometry were simultaneously applied for prospective minimal residual disease measurements at days 15, 33 and 78 of induction therapy on 3565 samples from 1547 children with acute lymphoblastic leukemia enrolled into the AIEOP-BFM ALL 2000 trial. RESULTS The overall concordance was 80%, but different results were observed according to the time point. Most discordances were found at day 33 (concordance rate 70%) in samples that had significantly lower minimal residual disease. However, the discordance was not due to different starting materials (total versus mononucleated cells), but rather to cell input number. At day 33, cases with minimal residual disease below or above the 0.01% cut-off by both methods showed a very good outcome (5-year event-free survival, 91.6%) or a poor one (5-year event-free survival, 50.9%), respectively, whereas discordant cases showed similar event-free survival rates (around 80%). CONCLUSIONS Within the current BFM-based protocols, flow cytometry and polymerase chain reaction cannot simply substitute each other at single time points, and the concordance rates between their results depend largely on the time at which they are used. Our findings suggest a potential complementary role of the two technologies in optimizing risk stratification in future clinical trials.
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Affiliation(s)
- Giuseppe Gaipa
- M Tettamanti Research Center, Pediatric Clinic University of Milano Bicocca, Monza, Italy
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Øbro NF, Ryder LP, Madsen HO, Andersen MK, Lausen B, Hasle H, Schmiegelow K, Marquart HV. Identification of residual leukemic cells by flow cytometry in childhood B-cell precursor acute lymphoblastic leukemia: verification of leukemic state by flow-sorting and molecular/cytogenetic methods. Haematologica 2011; 97:137-41. [PMID: 21933850 DOI: 10.3324/haematol.2011.051383] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Reduction in minimal residual disease, measured by real-time quantitative PCR or flow cytometry, predicts prognosis in childhood B-cell precursor acute lymphoblastic leukemia. We explored whether cells reported as minimal residual disease by flow cytometry represent the malignant clone harboring clone-specific genomic markers (53 follow-up bone marrow samples from 28 children with B-cell precursor acute lymphoblastic leukemia). Cell populations (presumed leukemic and non-leukemic) were flow-sorted during standard flow cytometry-based minimal residual disease monitoring and explored by PCR and/or fluorescence in situ hybridization. We found good concordance between flow cytometry and genomic analyses in the individual flow-sorted leukemic (93% true positive) and normal (93% true negative) cell populations. Four cases with discrepant results had plausible explanations (e.g. partly informative immunophenotype and antigen modulation) that highlight important methodological pitfalls. These findings demonstrate that with sufficient experience, flow cytometry is reliable for minimal residual disease monitoring in B-cell precursor acute lymphoblastic leukemia, although rare cases require supplementary PCR-based monitoring.
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Affiliation(s)
- Nina F Øbro
- Department of Clinical Immunology, University Hospital Rigshospitalet, Copenhagen, Denmark
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Helgestad J, Rosthøj S, Johansen P, Varming K, Østergaard E. Bone marrow aspiration technique may have an impact on therapy stratification in children with acute lymphoblastic leukaemia. Pediatr Blood Cancer 2011; 57:224-6. [PMID: 21360660 DOI: 10.1002/pbc.23081] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Accepted: 01/20/2011] [Indexed: 11/08/2022]
Abstract
BACKGROUND Morphological evaluation of early response to chemotherapy and measurement of minimal residual disease by flow cytometry or PCR are being used for evaluation of prognosis and treatment stratification in children with acute lymphoblastic leukaemia (ALL). PROCEDURE In a series of 14 consecutive bone marrow investigations from children with precursor B-cell ALL, morphological evaluations of smears and flow cytometric measurements of minimal residual disease in sequentially aspirated small (2 ml) and large (5-10 ml) volumes of bone marrow were compared, at various time points during therapy. RESULTS The density of nucleated cells was markedly reduced in the large volume aspirate. The percentage of erythroblasts measured by flow cytometry was smaller, indicating dilution with peripheral cells. Similarly, the blast percentage was reduced with 54% in large aspirates, and in four instances with minimal residual disease of >0.1% in the small volume, the level of blasts in the large aspirate was below this limit. CONCLUSIONS The amount of minimal residual disease should be measured in the first 2.5 ml of bone marrow aspirated from one puncture site. The procedure should be performed by experienced and carefully instructed doctors. In large aspirates, minimal residual disease will be underestimated, which may lead to failure to undertake a required intensification of therapy and a lower fraction of high risk patients in the trial.
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Affiliation(s)
- Jon Helgestad
- Department of Paediatrics, Aalborg Hospital, Aarhus University Hospital, Aalborg, Denmark.
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Peters JM, Ansari MQ. Multiparameter flow cytometry in the diagnosis and management of acute leukemia. Arch Pathol Lab Med 2011; 135:44-54. [PMID: 21204710 DOI: 10.5858/2010-0387-rar.1] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
CONTEXT Timely and accurate diagnosis of hematologic malignancies is crucial to appropriate clinical management. Acute leukemias are a diverse group of malignancies with a range of clinical presentations, prognoses, and preferred treatment protocols. Historical classification systems relied predominantly on morphologic and cytochemical features, but currently, immunophenotypic, cytogenetic, and molecular data are incorporated to define clinically relevant diagnostic categories. Multiparameter flow cytometry provides rapid and detailed determination of antigen expression profiles in acute leukemias which, in conjunction with morphologic assessment, often suggests a definitive diagnosis or a narrow differential. Many recurrent molecular or cytogenetic aberrations are associated with distinct immunophenotypic features, and therefore flow cytometry is an important tool to direct further testing. In addition, detection of specific antigens may have prognostic or therapeutic implications even within a single acute leukemia subtype. After initial diagnosis, a leukemia's immunophenotypic fingerprint provides a useful reference to monitor response to therapy, minimal residual disease, and recurrence. OBJECTIVE To provide an overview of the application of flow cytometric immunophenotyping to the diagnosis and management of acute leukemias, including salient features of those entities described in the 2008 World Health Organization classification. DATA SOURCES Published articles pertaining to flow cytometry, acute leukemia classification, and experiences of a reference flow cytometry laboratory. CONCLUSION Immunophenotypic evaluation is essential to accurate diagnosis and classification of acute leukemia. Multiparameter flow cytometry provides a rapid and effective means to collect this information, as well as providing prognostic information and a modality for minimal residual disease evaluation.
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Affiliation(s)
- John M Peters
- Department of Pathology, Southwestern Medical School, 5323 Harry Hines Blvd., Dallas, TX 75390-9073, USA
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Thörn I, Forestier E, Botling J, Thuresson B, Wasslavik C, Björklund E, Li A, Lindström-Eriksson E, Malec M, Grönlund E, Torikka K, Heldrup J, Abrahamsson J, Behrendtz M, Söderhäll S, Jacobsson S, Olofsson T, Porwit A, Lönnerholm G, Rosenquist R, Sundström C. Minimal residual disease assessment in childhood acute lymphoblastic leukaemia: a Swedish multi-centre study comparing real-time polymerase chain reaction and multicolour flow cytometry. Br J Haematol 2011; 152:743-53. [PMID: 21250970 DOI: 10.1111/j.1365-2141.2010.08456.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Minimal residual disease (MRD) assessment is a powerful prognostic factor for determining the risk of relapse in childhood acute lymphoblastic leukaemia (ALL). In this Swedish multi-centre study of childhood ALL diagnosed between 2002 and 2006, the MRD levels were analysed in 726 follow-up samples in 228 children using real-time quantitative polymerase chain reaction (RQ-PCR) of rearranged immunoglobulin/T-cell receptor genes and multicolour flow cytometry (FCM). Using an MRD threshold of 0·1%, which was the sensitivity level reached in all analyses, the concordance between RQ-PCR and FCM MRD values at day 29 was 84%. In B-cell precursor ALL, an MRD level of ≥0·1% at day 29 predicted a higher risk of bone marrow relapse (BMR) with both methods, although FCM was a better discriminator. However, considering the higher median MRD values achieved with RQ-PCR, a higher MRD cut-off (≥0·2%) improved the predictive capacity of RQ-PCR. In T-ALL, RQ-PCR was notably superior to FCM in predicting risk of BMR. That notwithstanding, MRD levels of ≥0·1%, detected by either method at day 29, could not predict isolated extramedullary relapse. In conclusion, the concordance between RQ-PCR and FCM was high and hence both methods are valuable clinical tools for identifying childhood ALL cases with increased risk of BMR.
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Affiliation(s)
- Ingrid Thörn
- Department of Genetics and Pathology, Uppsala University, Uppsala, Sweden.
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Combined analysis of minimal residual disease at two time points and its value for risk stratification in childhood B-lineage acute lymphoblastic leukemia. Leuk Res 2010; 34:1314-9. [DOI: 10.1016/j.leukres.2009.11.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2009] [Revised: 11/16/2009] [Accepted: 11/30/2009] [Indexed: 11/16/2022]
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Campana D. Progress of minimal residual disease studies in childhood acute leukemia. Curr Hematol Malig Rep 2010; 5:169-76. [PMID: 20467922 DOI: 10.1007/s11899-010-0056-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Submorphologic (ie, minimal) residual disease (MRD) can be monitored in virtually all children and adolescents with acute myeloid leukemia (AML) or acute lymphoblastic leukemia (ALL) using methods such as flow cytometric detection of leukemic immunophenotypes or polymerase chain reaction amplification of fusion transcripts, gene mutations, and clonal rearrangements of antigen-receptor genes. Numerous studies have demonstrated the clinical importance of measuring MRD, spurring the design of clinical trials in which MRD is used for risk assignment and treatment selection. Emerging results from these trials suggest that the adverse prognostic impact of low levels of MRD during the early phases of therapy can be diminished by treatment intensification. This article discusses the methods used for detecting MRD in childhood AML and ALL, the data obtained in studies correlating MRD with treatment outcome, the results of the initial trials using MRD, and the practical aspects related to the design of MRD-based clinical studies.
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Affiliation(s)
- Dario Campana
- Department of Oncology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA.
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Elorza I, Palacio C, Dapena JL, Gallur L, Sánchez de Toledo J, Díaz de Heredia C. Relationship between minimal residual disease measured by multiparametric flow cytometry prior to allogeneic hematopoietic stem cell transplantation and outcome in children with acute lymphoblastic leukemia. Haematologica 2010; 95:936-41. [PMID: 20179088 DOI: 10.3324/haematol.2009.010843] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND The presence of minimal residual disease detected by polymerase chain reaction techniques prior to allogeneic hematopoietic stem cell transplantation has proven to be an independent prognostic factor for poor outcome in children with acute lymphoblastic leukemia. DESIGN AND METHODS The aim of this study was to ascertain whether the presence of minimal residual disease detected by multiparametric flow cytometry prior to allogeneic hematopoietic stem cell transplantation is related to outcome in children acute lymphoblastic leukemia. Minimal residual disease was quantified by multiparametric flow cytometry at a median of 10 days prior to hematopoietic stem cell transplantation in 31 children (age range, 10 months to 16 years) with acute lymphoblastic leukemia. Thirteen patients were transplanted in first remission. Stem cell donors were HLA-identical siblings in 8 cases and matched unrelated donors in 23. Twenty-six children received a total body irradiation-containing conditioning regimen. According to the level of minimal residual disease, patients were divided into two groups: minimal residual disease-positive (>or=0.01%) (n=10) and minimal residual disease-negative (<0.01%) (n=21). RESULTS Estimated event-free survival rates at 2 years for the minimal residual disease-negative and -positive subgroups were 74% and 20%, respectively (P=0.004) and overall survival rates were 80% and 20%, respectively (P=0.005). Bivariate analysis identified pre-transplant minimal residual disease as the only significant factor for relapse and also for death (P<0.01). CONCLUSIONS The presence of minimal residual disease measured by multiparametric flow cytometry identified a group of patients with a 9.5-fold higher risk of relapse and a 3.2-fold higher risk of death than those without minimal residual disease. This study supports the strong relationship between pre-transplantation minimal residual disease measured by multiparametric flow cytometry and outcome following allogeneic hematopoietic stem cell transplantation and concur with the results of previous studies using polymerase chain reaction techniques.
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Affiliation(s)
- Izaskun Elorza
- Department of Pediatric Hematology and Oncology Hospital Universitario Vall d'Hebron Paseig de la Vall d'Hebron 119-129 08035 Barcelona, Spain.
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Sutton R, Venn NC, Tolisano J, Bahar AY, Giles JE, Ashton LJ, Teague L, Rigutto G, Waters K, Marshall GM, Haber M, Norris MD. Clinical significance of minimal residual disease at day 15 and at the end of therapy in childhood acute lymphoblastic leukaemia. Br J Haematol 2009; 146:292-9. [PMID: 19500099 DOI: 10.1111/j.1365-2141.2009.07744.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Detection of minimal residual disease (MRD) after induction and consolidation therapy is highly predictive of outcome for childhood acute lymphoblastic leukaemia (ALL) and is used to identify patients at high risk of relapse in several current clinical trials. To evaluate the prognostic significance of MRD at other treatment phases, MRD was measured by real-time quantitative polymerase chain reaction on a selected group of 108 patients enrolled on the Australian and New Zealand Children's Cancer Study Group Study VII including 36 patients with a bone marrow or central nervous system relapse and 72 matched patients in first remission. MRD was prognostic of outcome at all five treatment phases tested: at day 15 (MRD > or = 5 x 10(-2), log rank P < 0.0001), day 35 (> or =1 x 10(-2), P = 0.0001), 4 months (> or =5 x 10(-4), P < 0.0001), 12 months (MRD > or = 1 x 10(-4), P = 0.006) and 24 months (MRD > or = 1 x 10(-4), P < 0.0001). Day 15 was the best early MRD time-point to differentiate between patients with high, intermediate and low risk of relapse. MRD testing at 12 and particularly at 24 months, detected molecular relapses in some patients up to 6 months before clinical relapse. This raised the question of whether a strategy of late monitoring and salvage therapy will improve outcome.
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Affiliation(s)
- Rosemary Sutton
- Children's Cancer Institute Australia for Medical Research, University of NSW, Sydney, NSW, Australia.
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