Cytometry Part B: Clinical Cytometry最新文献

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Role of flow cytometric immunophenotyping in the diagnosis of breast implant-associated anaplastic large cell lymphoma: A 6-year, single-institution experience 流式细胞免疫分型在诊断乳腺植入相关性无性大细胞淋巴瘤中的作用:6年单一机构经验。
IF 3.4 3区 医学
Cytometry Part B: Clinical Cytometry Pub Date : 2024-01-31 DOI: 10.1002/cyto.b.22162
Alexander Chan, Romany Auclair, Qi Gao, Paola Ghione, Steven Horwitz, Ahmet Dogan, Mikhail Roshal, Oscar Lin
{"title":"Role of flow cytometric immunophenotyping in the diagnosis of breast implant-associated anaplastic large cell lymphoma: A 6-year, single-institution experience","authors":"Alexander Chan,&nbsp;Romany Auclair,&nbsp;Qi Gao,&nbsp;Paola Ghione,&nbsp;Steven Horwitz,&nbsp;Ahmet Dogan,&nbsp;Mikhail Roshal,&nbsp;Oscar Lin","doi":"10.1002/cyto.b.22162","DOIUrl":"10.1002/cyto.b.22162","url":null,"abstract":"<p>Breast implant-associated anaplastic large cell lymphoma (BIA-ALCL) is an uncommon mature T-cell neoplasm occurring in patients with textured breast implants, typically after 7–10 years of exposure. Although cytopathologic or histopathologic assessment is considered the gold standard diagnostic method for BIA-ALCL, flow cytometry (FC)-based immunophenotyping is recommended as an adjunct test. However, the diagnostic efficacy of FC is not well reported. We reviewed 290 FC tests from breast implant pericapsular fluid and capsule tissue from 182 patients, including 16 patients with BIA-ALCL over a 6-year period, calculating diagnostic rates and test efficacy. FC showed an overall sensitivity of 75.9%, specificity of 100%, and negative and positive predictive values of 95.4% and 100%, respectively. Blinded expert review of false-negative cases identified diagnostic pitfalls, improving sensitivity to 96.6%. Fluid samples had better rates of adequate samples for FC testing compared with tissue samples. Paired with FC testing of operating room (OR)-acquired fluid samples, capsulectomy FC specimens added no diagnostic value in patients with concurrent fluid samples; no cases had positive capsule FC with negative fluid FC. Fluid samples are adequate for FC testing more often than tissue. Capsule tissue FC specimens do not improve FC efficacy when paired with OR-acquired fluid FC samples and are often inadequate samples. FC is 100% specific for BIA-ALCL and can serve as a confirmatory test but should not be the sole diagnostic method. Awareness of sample-specific diagnostic pitfalls greatly improves the sensitivity of BIA-ALCL testing by FC.</p>","PeriodicalId":10883,"journal":{"name":"Cytometry Part B: Clinical Cytometry","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139650467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ROR1 expression in mature B lymphoid neoplasms by flow cytometry 流式细胞仪检测成熟 B 淋巴肿瘤中 ROR1 的表达。
IF 3.4 3区 医学
Cytometry Part B: Clinical Cytometry Pub Date : 2024-01-25 DOI: 10.1002/cyto.b.22157
Flávia Arandas de Sousa, Nádila Magalhães Millan, Rodolfo Patussi Correia, Andressa da Costa Vaz, Daniela Schimidell, Priscila Carmona Miyamoto, Marilia Sandoval Passaro, Bruna Garcia Nogueira, Elizabeth Xisto Souto, Nydia Strachman Bacal, Laiz Camerão Bento
{"title":"ROR1 expression in mature B lymphoid neoplasms by flow cytometry","authors":"Flávia Arandas de Sousa,&nbsp;Nádila Magalhães Millan,&nbsp;Rodolfo Patussi Correia,&nbsp;Andressa da Costa Vaz,&nbsp;Daniela Schimidell,&nbsp;Priscila Carmona Miyamoto,&nbsp;Marilia Sandoval Passaro,&nbsp;Bruna Garcia Nogueira,&nbsp;Elizabeth Xisto Souto,&nbsp;Nydia Strachman Bacal,&nbsp;Laiz Camerão Bento","doi":"10.1002/cyto.b.22157","DOIUrl":"10.1002/cyto.b.22157","url":null,"abstract":"<p>Immunophenotyping by flow cytometry is an integral part of the diagnosis and classification of leukemias/lymphomas. The expression of ROR1 associated with chronic B lymphocytic leukemia (CLL) is well described in the literature, both in its diagnosis and in the follow-up of minimal residual disease (MRD) research, however, there are few studies regarding the expression pattern of ROR1 in other subtypes of mature B lymphoid neoplasms. With the aim of evaluating the expression of ROR1 and associating it with the expression of other important markers for the differentiation of mature B lymphoid neoplasms (MBLN), 767 samples of cases that entered our laboratory for immunophenotyping with clinical suspicion of MBLN were studied. ROR1 expression is predominant in CD5+/CD10− neoplasms. Overall, positive ROR1 expression was observed in 461 (60.1%) cases. The CD5+/CD10− group had a significantly higher proportion of ROR1 positive samples (89.9%) and more brightly expressed ROR1 than the other groups. Our results highlight the importance of evaluating ROR1 expression in the diagnosis of MBLN to contribute to the differential diagnosis, and possibly therapy of mainly CLL, and indicate that this marker could be considered as a useful addition to immunophenotypic panels, particularly for more challenging cases.</p>","PeriodicalId":10883,"journal":{"name":"Cytometry Part B: Clinical Cytometry","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139564045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Maturational dyssynchrony in benign B-cell precursors following lymphocyte depleting chemotherapy: A potential pitfall for B-lymphoblastic leukemia minimal/measurable residual disease (MRD) flow cytometry analysis 淋巴细胞耗竭化疗后良性 B 细胞前体的成熟不同步:B淋巴细胞白血病最小/可测量残留病(MRD)流式细胞术分析的潜在陷阱。
IF 3.4 3区 医学
Cytometry Part B: Clinical Cytometry Pub Date : 2024-01-21 DOI: 10.1002/cyto.b.22161
Alexander Placek, Brian Lockhart, Karin P. Miller, Gerald B. Wertheim, Shannon L. Maude, Brent L. Wood, Alexandra E. Kovach
{"title":"Maturational dyssynchrony in benign B-cell precursors following lymphocyte depleting chemotherapy: A potential pitfall for B-lymphoblastic leukemia minimal/measurable residual disease (MRD) flow cytometry analysis","authors":"Alexander Placek,&nbsp;Brian Lockhart,&nbsp;Karin P. Miller,&nbsp;Gerald B. Wertheim,&nbsp;Shannon L. Maude,&nbsp;Brent L. Wood,&nbsp;Alexandra E. Kovach","doi":"10.1002/cyto.b.22161","DOIUrl":"10.1002/cyto.b.22161","url":null,"abstract":"","PeriodicalId":10883,"journal":{"name":"Cytometry Part B: Clinical Cytometry","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139511522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Deciphering stage 0 hematogones by flow cytometry in follow-up bone marrow samples of pediatric B—Acute lymphoblastic leukemia cases: A potential mimicker of residual disease after anti CD19 therapy 通过流式细胞术破译小儿 B 型急性淋巴细胞白血病随访骨髓样本中的 0 期血细胞:抗 CD19 治疗后残留疾病的潜在模拟者。
IF 3.4 3区 医学
Cytometry Part B: Clinical Cytometry Pub Date : 2024-01-19 DOI: 10.1002/cyto.b.22159
Thulasi Raman Ramalingam, Lakshman Vaidhyanathan, Anurekha Muthu, Venkateswaran Vellaichamy Swaminathan, Ramya Uppuluri, Revathi Raj
{"title":"Deciphering stage 0 hematogones by flow cytometry in follow-up bone marrow samples of pediatric B—Acute lymphoblastic leukemia cases: A potential mimicker of residual disease after anti CD19 therapy","authors":"Thulasi Raman Ramalingam,&nbsp;Lakshman Vaidhyanathan,&nbsp;Anurekha Muthu,&nbsp;Venkateswaran Vellaichamy Swaminathan,&nbsp;Ramya Uppuluri,&nbsp;Revathi Raj","doi":"10.1002/cyto.b.22159","DOIUrl":"10.1002/cyto.b.22159","url":null,"abstract":"<p>CD19 is frequently targeted for immunotherapy in B cell malignancies, which may result in loss of CD19 expression in leukemic cells as an escape mechanism. Stage 0 hematogones (Hgs) are normal CD19-negative very early B cell precursors that can be potentially mistaken for CD19 negative residual leukemic cells by flow cytometry (FCM) in B cell acute lymphoblastic leukemia (BCP-ALL) cases treated with anti CD19 therapy. Our main objective was to characterize and study the incidence of stage 0 hematogones in follow-up bone marrow samples of pediatric BCP-ALL cases. We analyzed the flow cytometry standard files of 61 pediatric BCP-ALL cases treated with conventional chemotherapy and targeted anti-CD19 therapy, for identifying the residual disease and normal B cell precursors including stage 0 Hgs. A non-CD19 alternate gating strategy was used to isolate the B cells for detecting the residual disease and stage 0 Hgs. The stage 0 Hgs were seen in 95% of marrow samples containing CD19+ Hgs. When compared with controls and posttransplant marrow samples, the fraction of stage 0 Hgs was higher in patients receiving anti CD19 therapy (<i>p</i> = 0.0048), but it was not significant when compared with patients receiving chemotherapy (<i>p</i> = 0.1788). Isolated stage 0 Hgs are found in samples treated with anti-CD19 therapy simulating CD19 negative residual illness. Our findings aid in understanding the stage 0 Hgs and its association with CD19+ Hgs in anti CD19 therapy and conventional chemotherapy. This is crucial as it can be potentially mistaken for residual disease in patients treated with anti CD19 therapy.</p>","PeriodicalId":10883,"journal":{"name":"Cytometry Part B: Clinical Cytometry","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139502365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Standardization of flow cytometric detection of antigen expression 流式细胞仪检测抗原表达的标准化
IF 3.4 3区 医学
Cytometry Part B: Clinical Cytometry Pub Date : 2024-01-12 DOI: 10.1002/cyto.b.22155
Linhua Tian, Aaron R. Nelson, Tyler Lowe, Linda Weaver, Constance Yuan, Hao-Wei Wang, Paul DeRose, Maryalice Stetler-Stevenson, Lili Wang
{"title":"Standardization of flow cytometric detection of antigen expression","authors":"Linhua Tian,&nbsp;Aaron R. Nelson,&nbsp;Tyler Lowe,&nbsp;Linda Weaver,&nbsp;Constance Yuan,&nbsp;Hao-Wei Wang,&nbsp;Paul DeRose,&nbsp;Maryalice Stetler-Stevenson,&nbsp;Lili Wang","doi":"10.1002/cyto.b.22155","DOIUrl":"10.1002/cyto.b.22155","url":null,"abstract":"<p>Since response to antigen-based immunotherapy relies upon the level of tumor antigen expression we developed an antigen quantification assay using ABC values. Antigen quantification as a clinical assay requires methods for quality control and for interlaboratory and inter-cytometer platform standardization. A single lot of Cytotrol™ Lyophilized Control Cells (Beckman Coulter) used for all studies. The variability in antigen quantification across 4 different instrument platforms in 2 separate laboratories was evaluated. The effect of the antibody clone utilized, importance of custom 1:1 molar ratio (fluorophore to protein, F/P) verses off-the-shelf antibodies, and QuantiBrite PE calibration verses linearity calibration combined with a single point scale transformation with CD4 as reference were determined. Use of single lot control cells allowed validation of reproducibility between flow cytometer platforms and laboratories and allowed assessment of different antibody lots, cocktail preparation, and different antibody clones. Off the shelf antibody preparations provide reproducible estimates of antigen density, however custom 1:1 unimolar antibody preparations should be utilized for definitive measurement of antigen expression.Geometric Mean fluorescent Intensity (GeoMFI) was not comparable across instruments and inter-laboratory. The use of CD4 as the reference marker can minimize variability in ABC values. Comparable antigen quantification is vital in managing patients receiving antigen-based immunotherapy. If this assay is to be utilized in a clinical setting, quality control methods have to be instituted to assure reproducibility and allow validation across laboratories. We have demonstrated that use of a lyophilized cell control is highly valuable in achieveing these goals.</p>","PeriodicalId":10883,"journal":{"name":"Cytometry Part B: Clinical Cytometry","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139461315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CD34 and CD117 negative pure erythroid leukemia and phenotypic differences with acute megakaryoblastic leukemia CD34 和 CD117 阴性纯红细胞白血病以及与急性巨核细胞白血病的表型差异。
IF 3.4 3区 医学
Cytometry Part B: Clinical Cytometry Pub Date : 2024-01-08 DOI: 10.1002/cyto.b.22160
Alejandra Altube, Daniela Chelin, Mariela Gomez, Cecilia Malusardi, Dolores Sciaccaluga, Cecilia Cabral, Mariangeles Auat
{"title":"CD34 and CD117 negative pure erythroid leukemia and phenotypic differences with acute megakaryoblastic leukemia","authors":"Alejandra Altube,&nbsp;Daniela Chelin,&nbsp;Mariela Gomez,&nbsp;Cecilia Malusardi,&nbsp;Dolores Sciaccaluga,&nbsp;Cecilia Cabral,&nbsp;Mariangeles Auat","doi":"10.1002/cyto.b.22160","DOIUrl":"10.1002/cyto.b.22160","url":null,"abstract":"","PeriodicalId":10883,"journal":{"name":"Cytometry Part B: Clinical Cytometry","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139377332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Issue highlights—November 2023 本期要闻--2023 年 11 月
IF 3.4 3区 医学
Cytometry Part B: Clinical Cytometry Pub Date : 2023-12-18 DOI: 10.1002/cyto.b.22154
Professor Alberto Orfao
{"title":"Issue highlights—November 2023","authors":"Professor Alberto Orfao","doi":"10.1002/cyto.b.22154","DOIUrl":"https://doi.org/10.1002/cyto.b.22154","url":null,"abstract":"<p>This new issue of Cytometry B (Clinical Cytometry) consists of five main manuscripts which contain original research in the field of clinical cytometry. A manuscript describing a simple (new) method for preservation of urinary cells for subsequent flow cytometric analyses (Freund et al., <span>2023</span>) opens this issue of the journal. It is followed by three papers related to the application of flow cytometry in the field of acute leukemias. In the first two manuscripts distinct assays for measurable residual disease (MRD) monitoring in acute myeloblastic leukemia (AML) (Tettero et al., <span>2023</span>) and B-cell precursor (BCP) acute lymphoblastic leukemia (ALL) (Arunachalam et al., <span>2023</span>) are (technically and clinically) validated, whereas the third one consists of a comparison and validation of four immunophenotypic scoring systems for the diagnosis of early-T precursor (ETP) acute lymphoblastic leukemia (ALL) (Basavaraju et al., <span>2023</span>). The fifth article in this issue of Cytometry B revisits the application of flow cytometry for HLA-B27 typing through the comparison of 3 CE-IVD certified methods (Waeckel et al., <span>2023</span>). Three letters to the editor complete the contents of the November issue of Cytometry B, in which different aspects of three clinically relevant flow cytometric assays for sepsis (Haem-Rahimi et al., <span>2023</span>), drug-induced hypersensitivity (Ebo et al., <span>2023</span>) and diagnostic screening of acute leukemias (Axler et al., <span>2023</span>), are briefly addressed. In this section, I will summarize the contents and highlight the most relevant contributions of the above papers in four separate blocks related to the fields of (i) the flow cytometric analysis of samples with low cell viability, (ii) the flow cytometric diagnosis and monitoring of acute leukemias, (iii) HLA-B27 typing and (iv) the feasibility to measure HLADR expression levels on stabilized blood monocytes and blood circulating drug-specific T cells in the diagnostic work-up of sepsis and drug-hypersensitivity, respectively.</p><p>Flow cytometry assays used in diagnostic laboratories have mostly focused on blood samples and to a less extent also, in bone marrow and other tissue and body fluid specimens. Despite the high frequency of kidney and urinary tract diseases in the general population, and the frequent need for invasive diagnostic procedures (e.g., kidney biopsy), urine has been one of the less explored and used specimens among the distinct types of body fluids evaluated in (clinical) flow cytometry. Of note, urine samples are frequently obtained for conventional biochemistry assays, including analysis of proteinuria, and for the evaluation of the urine sediment by conventional, for example, cytomorphology. In contrast, flow cytometric analysis of urinary cells (e.g., immune cells, podocytes or epithelial cells) is rarely used in routine diagnostics, despite it has proven to provide valuable infor","PeriodicalId":10883,"journal":{"name":"Cytometry Part B: Clinical Cytometry","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cyto.b.22154","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138739912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Editorial on IVD cellular assay validation 关于 IVD 细胞检测验证的社论
IF 3.4 3区 医学
Cytometry Part B: Clinical Cytometry Pub Date : 2023-12-15 DOI: 10.1002/cyto.b.22156
Bruce H. Davis
{"title":"Editorial on IVD cellular assay validation","authors":"Bruce H. Davis","doi":"10.1002/cyto.b.22156","DOIUrl":"10.1002/cyto.b.22156","url":null,"abstract":"<p>The article in this issue of Cytometry B on “Standardization of Flow Cytometric Detection of Antigen Expression” by the NCI clinical cytometry group formerly headed by Maryalice Stetler-Stevenson and the NIST group headed by Lili Wang is deserving of not only an accompanying editorial, but special attention by all those readers intending to work in clinical cytometry for the coming decade, as it describes an important future component of diagnostic cellular analysis (Tain et al., <span>2023</span>). Specifically, the ability to measure the antigen (or probe target) expression on well-characterized cell populations will be a vital component of not only monitoring of patients with malignancy, as discussed in the article by Tian et al. herein (Tain et al., <span>2023</span>) but also monitoring of a variety of immune responses or therapeutically altered defined cell populations. A few predictions as to what true antigen quantitation will provide: (1) treatment of sickle cell disease will be adjusted through a standardized measurement of the level of hemoglobin F in F cells (Hgb F containing RBCs) in order to retard the sickling process (De Souza et al., <span>2023</span>); (2) patients with severe infection, cytokine storms and certainly sepsis will be monitored for a combination of activation markers (CD64, CD169, HLA-Dr and others) on neutrophils, monocytes and other cell types for informative and actionable changes regarding the immune status (Bourgoin et al., <span>2020</span>; Davis et al., <span>2006</span>; Davis &amp; Bigelow, <span>2005</span>; Ortillon et al., <span>2021</span>; Schiff et al., <span>1997</span>); (3) Rapid assays for the genetic expression of newly induced targets (CAR-T cells, adenovirus insertion of other targeting receptors, etc.).</p><p>The paper also compares two commonly advocated quantitation methods, PE labeled beads to derive average or median antibody binding capacity (ABC) per cell (Davis et al., <span>1998</span>) vs. single point transformation or ratiometric comparison of the targeted cell population to the CD4 expression on helper T cells using an assumed 40,000 CD4 mAb binding sites per cell (Degheidy et al., <span>2016</span>; Wang et al., <span>2016</span>). Other technical variables the paper convincingly observed is that purified 1:1 PE:antibody preparations give better precision than regular off-the-shelf PE-labeled antibody lots, even if the measured F/P ratio of the off the shelf preparation is close to 1.00. Not surprisingly the study provides quantitative evidence that clone selection does matter and different clones with the same reported target antigen specificity can give variable results, up to nearly a two-fold difference in ABC units and this difference was in no way correctable using the reported F/P ratio of the antibody lot. While the use of 1:1 PE:antibody preparation along with spectrally matched beads for ABC quantitation gave acceptable imprecision with a CV between four instruments","PeriodicalId":10883,"journal":{"name":"Cytometry Part B: Clinical Cytometry","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cyto.b.22156","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138686029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Immunophenotypic portrait of leukemia-associated-phenotype markers in B acute lymphoblastic leukemia B型急性淋巴细胞白血病中白血病相关表型标记物的免疫表型表征。
IF 3.4 3区 医学
Cytometry Part B: Clinical Cytometry Pub Date : 2023-11-30 DOI: 10.1002/cyto.b.22153
Emilia Boris, Alexandre Theron, Valentin Montagnon, Nicolas Rouquier, Marion Almeras, Jérôme Moreaux, Caroline Bret
{"title":"Immunophenotypic portrait of leukemia-associated-phenotype markers in B acute lymphoblastic leukemia","authors":"Emilia Boris,&nbsp;Alexandre Theron,&nbsp;Valentin Montagnon,&nbsp;Nicolas Rouquier,&nbsp;Marion Almeras,&nbsp;Jérôme Moreaux,&nbsp;Caroline Bret","doi":"10.1002/cyto.b.22153","DOIUrl":"10.1002/cyto.b.22153","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>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.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>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 (<i>n</i> = 10 healthy donors), of normal precursor B regenerative cells (<i>n</i> = 40 uninvolved bone marrow samples) and of lymphoblasts (<i>n</i> = 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.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>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)(<i>BCR-ABL</i>) in comparison with B lymphoblasts without any recurrent cytogenetic alteration (<i>p</i> = 0.0317 and <i>p</i> = 0.0011, respectively) and with B lymphoblasts harboring other cytogenetic recurrent abnormalities (<i>p</i> = 0.0032 and <i>p</i> &lt; 0.0001, respectively). B lymphoblasts with t(1;19) at diagnosis significantly overexpressed CD81 when compared with B lymphoblasts with other recurrent cytogenetic abnormalitie","PeriodicalId":10883,"journal":{"name":"Cytometry Part B: Clinical Cytometry","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cyto.b.22153","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138458473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CD5-negative chronic lymphocytic leukemia: Does this entity really exist? cd5阴性慢性淋巴细胞白血病:这个实体真的存在吗?
IF 3.4 3区 医学
Cytometry Part B: Clinical Cytometry Pub Date : 2023-11-28 DOI: 10.1002/cyto.b.22151
Daniel Mazza Matos
{"title":"CD5-negative chronic lymphocytic leukemia: Does this entity really exist?","authors":"Daniel Mazza Matos","doi":"10.1002/cyto.b.22151","DOIUrl":"10.1002/cyto.b.22151","url":null,"abstract":"","PeriodicalId":10883,"journal":{"name":"Cytometry Part B: Clinical Cytometry","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138451167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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