1
|
van der Linde R, Gatt PN, Smith S, Fernandez MA, Vaughan L, Blyth E, Curnow J, Brown DA, Tegg E, Sasson SC. Measurable Residual Disease (MRD) by Flow Cytometry in Adult B-Acute Lymphoblastic Leukaemia (B-ALL) and Acute Myeloid Leukaemia (AML): Correlation with Molecular MRD Testing and Clinical Outcome at One Year. Cancers (Basel) 2023; 15:5064. [PMID: 37894431 PMCID: PMC10605425 DOI: 10.3390/cancers15205064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 10/29/2023] Open
Abstract
Measurable residual disease (MRD) detected by flow cytometry (FC) is well established in paediatric B- lymphoblastic leukaemia (B-ALL) and adult chronic lymphocytic leukaemia (CLL), but its utility in adult B-ALL and adult acute myeloid leukaemia (AML) is less clear. In this prospective MRD study, one of the largest in Australia to date, we examined consecutive bone marrow aspirates from adult participants with B-ALL (n = 47) and AML (n = 87) sent for FC-MRD testing at a quaternary referral hospital in Sydney. FC-MRD results were correlated to corresponding Mol-MRD testing where available and clinical outcomes at three-month intervals over 1 year. B-ALL showed a moderate positive correlation (rs = 0.401, p < 0.001), while there was no correlation between FC-MRD and Mol-MRD for AML (rs = 0.13, p = 0.237). Five FC-MRD patterns were identified which had significant associations with relapse (X2(4) = 31.17(4), p > 0.001) and survival (X2(4) = 13.67, p = 0.008) in AML, but not in B-ALL. The three-month MRD results were also strongly associated with survival in AML, while the association in B-ALL was less evident. There was a moderate correlation between FC-MRD and Mol-MRD in B-ALL but not AML. The association of FC-MRD with relapse and survival was stronger in AML than in B-ALL. Overall, these findings suggest divergent utilities of FC-MRD in AML and B-ALL.
Collapse
Affiliation(s)
- Riana van der Linde
- Department of Laboratory Haematology, Institute of Clinical Pathology and Medical Research, NSW Health Pathology, Westmead Hospital, Westmead, NSW 2145, Australia; (L.V.); (E.T.)
- Faculty of Medicine and Health, Sydney Medical School, University of Sydney, Camperdown, NSW 2050, Australia; (P.N.G.); (E.B.); (J.C.); (D.A.B.); (S.C.S.)
| | - Prudence N. Gatt
- Faculty of Medicine and Health, Sydney Medical School, University of Sydney, Camperdown, NSW 2050, Australia; (P.N.G.); (E.B.); (J.C.); (D.A.B.); (S.C.S.)
- Westmead Institute for Medical Research, University of Sydney, Sydney, NSW 2145, Australia
| | - Sandy Smith
- Flow Cytometry Unit, Institute of Clinical Pathology and Medical Research, NSW Health Pathology, Westmead Hospital, Westmead, NSW 2145, Australia; (S.S.); (M.A.F.)
| | - Marian A. Fernandez
- Flow Cytometry Unit, Institute of Clinical Pathology and Medical Research, NSW Health Pathology, Westmead Hospital, Westmead, NSW 2145, Australia; (S.S.); (M.A.F.)
| | - Lachlin Vaughan
- Department of Laboratory Haematology, Institute of Clinical Pathology and Medical Research, NSW Health Pathology, Westmead Hospital, Westmead, NSW 2145, Australia; (L.V.); (E.T.)
- Department of Haematology, Western Sydney Local Health District, Westmead Hospital, Westmead, NSW 2145, Australia
| | - Emily Blyth
- Faculty of Medicine and Health, Sydney Medical School, University of Sydney, Camperdown, NSW 2050, Australia; (P.N.G.); (E.B.); (J.C.); (D.A.B.); (S.C.S.)
- Westmead Institute for Medical Research, University of Sydney, Sydney, NSW 2145, Australia
- Department of Haematology, Western Sydney Local Health District, Westmead Hospital, Westmead, NSW 2145, Australia
| | - Jennifer Curnow
- Faculty of Medicine and Health, Sydney Medical School, University of Sydney, Camperdown, NSW 2050, Australia; (P.N.G.); (E.B.); (J.C.); (D.A.B.); (S.C.S.)
- Department of Haematology, Western Sydney Local Health District, Westmead Hospital, Westmead, NSW 2145, Australia
| | - David A. Brown
- Faculty of Medicine and Health, Sydney Medical School, University of Sydney, Camperdown, NSW 2050, Australia; (P.N.G.); (E.B.); (J.C.); (D.A.B.); (S.C.S.)
- Westmead Institute for Medical Research, University of Sydney, Sydney, NSW 2145, Australia
- Department of Clinical Immunology and Immunopathology, Institute of Clinical Pathology and Medical Research, NSW Health Pathology, Westmead Hospital, Westmead, NSW 2145, Australia
| | - Elizabeth Tegg
- Department of Laboratory Haematology, Institute of Clinical Pathology and Medical Research, NSW Health Pathology, Westmead Hospital, Westmead, NSW 2145, Australia; (L.V.); (E.T.)
- Faculty of Medicine and Health, Sydney Medical School, University of Sydney, Camperdown, NSW 2050, Australia; (P.N.G.); (E.B.); (J.C.); (D.A.B.); (S.C.S.)
| | - Sarah C. Sasson
- Faculty of Medicine and Health, Sydney Medical School, University of Sydney, Camperdown, NSW 2050, Australia; (P.N.G.); (E.B.); (J.C.); (D.A.B.); (S.C.S.)
- Department of Clinical Immunology and Immunopathology, Institute of Clinical Pathology and Medical Research, NSW Health Pathology, Westmead Hospital, Westmead, NSW 2145, Australia
| |
Collapse
|
3
|
Soh KT, Conway A, Liu X, Wallace PK. Development of a 27-color panel for the detection of measurable residual disease in patients diagnosed with acute myeloid leukemia. Cytometry A 2022; 101:970-983. [PMID: 35716345 DOI: 10.1002/cyto.a.24667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 04/26/2022] [Accepted: 06/15/2022] [Indexed: 01/27/2023]
Abstract
Acute myeloid leukemia (AML) measurable residual disease (MRD) evaluated by multiparametric flow cytometry (MFC) is a surrogate for progression-free and overall survival in clinical trials and patient management. Due to the limited number of detection channels available in conventional flow cytometers, panels used for assessing AML MRD are typically split into multiple tubes. This cripples the simultaneous and correlated assessment of all myeloblast measurements. In response, we prototyped a single-tube 27-color MFC assay for the evaluation of AML MRD, incorporating all recommended markers. Marrow aspirates from 22 patients were processed for analysis using full spectrum flow cytometry (FSFC). The signal resolution of each marker was compared between samples stained with single antibody vs. the fully stained panel. The analytical accuracy for quantifying hematopoietic cells between our established 8-color assay and the new 27-color method were compared. Variations within an operator and between separate operators were assessed to evaluate the assays reproducibility. The limited of blank (LOB), limit of detection (LOD), and lower limit of quantification (LLOQ) of the 27-color method were empirically determined using limiting dilution experiments. The stability of antibody cocktails over a period of 120 h was also studied using cryopreserved marrow cells. The stain indices for all antibodies were lower in the fully stained panel compared to cells stained with one antibody but clear separations between negative and positive signals were achieved for all antibodies. Our results demonstrated a high concordance between the established 8-color method and the new 27-color assay for enumerating myeloblasts and MRD interpretation within and between operators. The data further showed that the single-tube 27-color assay easily achieved the minimum required detection sensitivity of 0.1%. When antibodies were combined, however, expression intensity of some antigens deteriorated significantly when stored. Our single-tube 27-color panel is a suitable, high sensitivity flow cytometric approach that can be used for AML MRD testing, which improves the correlation of aberrant antigens and detection of asynchronous differentiation patterns. Based on the stability study, we recommend the full panel be made prior to staining.
Collapse
Affiliation(s)
- Kah Teong Soh
- Department of Flow and Image Cytometry, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Alexis Conway
- Department of Flow and Image Cytometry, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Xiaojun Liu
- Department of Flow and Image Cytometry, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Paul K Wallace
- Department of Flow and Image Cytometry, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| |
Collapse
|
5
|
Wu S, Shen D, Zhao L. AKAP9 Upregulation Predicts Unfavorable Prognosis in Pediatric Acute Myeloid Leukemia and Promotes Stemness Properties via the Wnt/β-Catenin Pathway. Cancer Manag Res 2022; 14:157-167. [PMID: 35046723 PMCID: PMC8760470 DOI: 10.2147/cmar.s343033] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 12/07/2021] [Indexed: 12/16/2022] Open
Abstract
Background PRKA kinase anchor protein 9 (AKAP9) is a scaffold protein involved in various cellular processes, including cell adhesion, proliferation, differentiation, and apoptosis. Although the oncogenic role of AKAP9 in solid tumors is well elucidated, the functions and mechanisms of AKAP9 in acute myeloid leukemia (AML) are still not understood. Methods We used the gene expression omnibus (GEO) database (GSE2191) to determine the mRNA expression of AKAP9 in the bone marrow of pediatric AML and healthy patients. We further used the therapeutically available research to generate effective treatments (TARGET) database to elucidate the relationship between AKAP9 expression and clinical outcomes in pediatric patients with AML. In addition, cell proliferation, cell cycle, apoptosis, RT-PCR, and Western blotting assays were applied to reveal the functions of AKAP9 and the underlying mechanisms of AKAP9 silencing in THP1 and HL60 cell lines. Results AKAP9 is overexpressed in the bone marrow of pediatric AML patients as compared with that of healthy patients. High expression of AKAP9 was found to be a predictor of poor overall survival (OS) and event-free survival (EFS). Using univariate and multivariate survival analyses, we found that high AKAP9 expression is an independent predictor of a worse OS and EFS. Functionally, AKAP9 silencing significantly inhibited AML cell proliferation, and cell cycle progression and promoted apoptosis. Moreover, AKAP9 silencing significantly downregulated the expression of stemness markers and β-catenin. Conclusion AKAP9 upregulation is a predictor of unfavorable prognosis, promotes stemness, and activates the Wnt/β-catenin pathway in AML patients. AKAP9 may act as a prognostic biomarker of AML in pediatric patients and a future therapeutic target.
Collapse
Affiliation(s)
- Shiwen Wu
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, People’s Republic of China
- Departments of Clinical Laboratory, The First Hospital of Lanzhou University, Lanzhou University, Lanzhou, Gansu, People’s Republic of China
| | - Dongqin Shen
- Department of Medical Oncology, The First Hospital of Lanzhou University, Lanzhou, Gansu, People’s Republic of China
| | - Li Zhao
- Department of Central Laboratory, Gansu Key Laboratory of Genetic Study of Hematopathy, The First Hospital of Lanzhou University, Lanzhou, Gansu, People’s Republic of China
- Correspondence: Li Zhao Department of Central Laboratory, Gansu Key Laboratory of Genetic Study of Hematopathy, The First Hospital of Lanzhou University, Lanzhou University, No. 1 Donggang West Road, Lanzhou, Gansu, 730000, People’s Republic of ChinaTel +8613919934053Fax +8609318356353 Email
| |
Collapse
|