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Chen X, Chen X, Zhao S, Shi Y, Zhang N, Guo Z, Qiao C, Jin H, Zhu L, Zhu H, Li J, Wu Y. Performance of a novel eight-color flow cytometry panel for measurable residual disease assessment of chronic lymphocytic leukemia. CYTOMETRY. PART B, CLINICAL CYTOMETRY 2024; 106:181-191. [PMID: 38535092 DOI: 10.1002/cyto.b.22170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 03/03/2024] [Accepted: 03/12/2024] [Indexed: 06/01/2024]
Abstract
BACKGROUND Measurable residual disease (MRD) is an important prognostic indicator of chronic lymphocytic leukemia (CLL). Different flow cytometric panels have been developed for the MRD assessment of CLL in Western countries; however, the application of these panels in China remains largely unexplored. METHODS Owing to the requirements for high accuracy, reproducibility, and comparability of MRD assessment in China, we investigated the performance of a flow cytometric approach (CD45-ROR1 panel) to assess MRD in patients with CLL. The European Research Initiative on CLL (ERIC) eight-color panel was used as the "gold standard." RESULTS The sensitivity, specificity, and concordance rate of the CD45-ROR1 panel in the MRD assessment of CLL were 100% (87/87), 88.5% (23/26), and 97.3% (110/113), respectively. Two of the three inconsistent samples were further verified using next-generation sequencing. In addition, the MRD results obtained from the CD45-ROR1 panel were positively associated with the ERIC eight-color panel results for MRD assessment (R = 0.98, p < 0.0001). MRD detection at low levels (≤1.0%) demonstrated a smaller difference between the two methods (bias, -0.11; 95% CI, -0.90 to 0.68) than that at high levels (>1%). In the reproducibility assessment, the bias was smaller at three data points (within 24, 48, and 72 h) in the CD45-ROR1 panel than in the ERIC eight-color panel. Moreover, MRD levels detected using the CD45-ROR1 panel for the same samples from different laboratories showed a strong statistical correlation (R = 0.99, p < 0.0001) with trivial interlaboratory variation (bias, 0.135; 95% CI, -0.439 to 0.709). In addition, the positivity rate of MRD in the bone marrow samples was higher than that in the peripheral blood samples. CONCLUSIONS Collectively, this study demonstrated that the CD45-ROR1 panel is a reliable method for MRD assessment of CLL with high sensitivity, reproducibility, and reliability.
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MESH Headings
- Humans
- Leukemia, Lymphocytic, Chronic, B-Cell/diagnosis
- Leukemia, Lymphocytic, Chronic, B-Cell/pathology
- Leukemia, Lymphocytic, Chronic, B-Cell/blood
- Flow Cytometry/methods
- Neoplasm, Residual/diagnosis
- Neoplasm, Residual/pathology
- Middle Aged
- Leukocyte Common Antigens/analysis
- Male
- Female
- Aged
- Reproducibility of Results
- Immunophenotyping/methods
- Adult
- Sensitivity and Specificity
- Aged, 80 and over
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Affiliation(s)
- Xiao Chen
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
- Key Laboratory of Hematology, Nanjing Medical University, Nanjing, China
- Department of Hematology, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Xia Chen
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
- Key Laboratory of Hematology, Nanjing Medical University, Nanjing, China
- Department of Hematology, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Sishu Zhao
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
- Key Laboratory of Hematology, Nanjing Medical University, Nanjing, China
- Department of Hematology, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Yu Shi
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
- Key Laboratory of Hematology, Nanjing Medical University, Nanjing, China
- Department of Hematology, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Ninghan Zhang
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
- Key Laboratory of Hematology, Nanjing Medical University, Nanjing, China
- Department of Hematology, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Zhen Guo
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
- Key Laboratory of Hematology, Nanjing Medical University, Nanjing, China
- Department of Hematology, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Chun Qiao
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
- Key Laboratory of Hematology, Nanjing Medical University, Nanjing, China
- Department of Hematology, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Huimin Jin
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
- Key Laboratory of Hematology, Nanjing Medical University, Nanjing, China
- Department of Hematology, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Liying Zhu
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
- Key Laboratory of Hematology, Nanjing Medical University, Nanjing, China
- Department of Hematology, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Huayuan Zhu
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
- Key Laboratory of Hematology, Nanjing Medical University, Nanjing, China
- Department of Hematology, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Jianyong Li
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
- Key Laboratory of Hematology, Nanjing Medical University, Nanjing, China
- Department of Hematology, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Yujie Wu
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
- Key Laboratory of Hematology, Nanjing Medical University, Nanjing, China
- Department of Hematology, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
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Choi MY, Wang HY, Kipps TJ. SOHO State of the Art Updates and Next Questions: The Conundrum in Assessing the Therapy Response of Patients With Chronic Lymphocytic Leukemia. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2019; 19:321-325. [PMID: 31204237 DOI: 10.1016/j.clml.2019.05.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 05/22/2019] [Indexed: 12/21/2022]
Abstract
In 2018, the International Workshop on Chronic Lymphocytic Leukemia (iwCLL) updated the guidelines for diagnosis, indications for treatment, response assessment, and supportive management of patients with chronic lymphocytic leukemia. Included were definitions for response, which incorporated consideration of the significance of minimal residual disease. Here we discuss the clinical significance of complete response or partial response, as defined in the 2018 iwCLL guidelines, and the relative value of assessing for minimal residual disease.
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Affiliation(s)
- Michael Y Choi
- Division of Hematology/Oncology, UC San Diego Moores Cancer Center, La Jolla, CA
| | - Huan-You Wang
- Department of Pathology, UC San Diego Health System, La Jolla, CA
| | - Thomas J Kipps
- Division of Hematology/Oncology, UC San Diego Moores Cancer Center, La Jolla, CA.
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