Multiplexing 8 colors with 12 antibodies in a single lymphoid screening tube by flow cytometry for evaluating suspected chronic lymphoproliferative disorders (CLPD)

AbstractThe diagnosis of chronic lymphoproliferative disorder (CLPD) or non-Hodgkin Lymphoma (NHL) is based on the detection of the abnormal clonal lymphoid cells. The flow cytometry (FCM) immunophenotyping not only plays an essential role in the screening of CLPD but also helps in the specific identification and characterization of the expanded aberrant lymphocytes. Over decades, it has evolved from a single parameter to multi-parameter assessment by 3- to 12-color FCM. The greatest challenge is to characterize abnormal lymphoid cells by a limited immunophenotype (IPT) panel. A study was undertaken to evaluate the diagnostic usefulness of a single lymphoid screening tube (LST) FCM assays that included a multiplex of 12 antibody cocktails consisting of CD45, CD19, CD3, CD4, CD8, TCR γδ, CD5, CD20, CD56, CD38, kappa, and lambda in an 8-color labeling based on the proposed EuroFlow (EF) antibody panels with slight modifications. We have included the same set of markers and fluorochrome combinations except for CD45 V500-C, CD4 V450, and CD20 V450 instead of CD45 Pacific Orange ( PacO), CD20 Pacific Blue (PacB), and CD4 PacB. A logical gating strategy was used to separate different subsets of lymphoid populations for the detection of the clonal lymphoid cells. Further, antibody cocktails were used depending upon the nature of the clonal population like B, T, or natural kille r (NK) cells for definitive classification. The results were further correlated with trephine ...
Source: Journal of Hematopathology - Category: Pathology Source Type: research

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Chimeric antigen receptor (CAR)-T cell therapy is a new and powerful class of cancer immunotherapy [1,2]. Clinical trials of CAR-T cell therapy targeting the B cell marker CD19 have shown promising results for the treatment of hematologic malignancies, including acute lymphoblastic leukemia (ALL) [3-7], chronic lymphocytic leukemia [8,9], and non-Hodgkin lymphoma (NHL) [10,11]. CAR-T cell therapy targeting B cell maturation antigen (BCMA) has also been demonstrated to be effective for treating multiple myeloma (MM) [12-15].
Source: Biology of Blood and Marrow Transplantation - Category: Hematology Authors: Source Type: research
Chimeric antigen receptor (CAR)-T cell therapy is a new and powerful class of cancer immunotherapy [1,2]. Clinical trials of CAR-T cell therapy targeting the B-cell marker CD19 have shown promising results for the treatment of hematologic malignancies, including acute lymphoblastic leukemia (ALL) [3 –7], chronic lymphocytic leukemia (CLL) [8,9], and non-Hodgkin lymphoma (NHL) [10,11]. CAR-T cell therapy targeting B-cell maturation antigen (BCMA) has also been demonstrated to be effective for treating multiple myeloma (MM) [12–15].
Source: Biology of Blood and Marrow Transplantation - Category: Hematology Authors: Source Type: research
Conclusion: This prospective multicenter study provides information on the current incidence and outcome of IFD in the real life setting. Practice variation between the centers may help to ultimately improve antifungal management in children at highest risk for IFDs. Introduction Available data on the incidence and outcome of invasive fungal diseases (IFD) in children treated for a hematological malignancy or undergoing allogeneic hematopoietic stem cell transplantation (HSCT) are mostly based on single site, retrospective studies or on studies performed prior to the availability of newer compounds such as broad-sp...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Conclusions: CAR T cell therapies have demonstrated the clinical benefits of harnessing our body's own defenses to combat tumor cells. Similar research is being conducted on lesser known modifications and gene-modified immune cells, which we highlight in this review. Introduction Chimeric antigen receptors and engineered T cell receptors (based on previously identified high affinity T cell receptors) function by redirecting T cells to a predefined tumor-specific (or tumor-associated) target. Most of these modifications use retroviral or lentiviral vectors to integrate the construct, and most of the receptors ...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
S, Reinertsen KV Abstract BACKGROUND: Chronic fatigue (CF) is scarcely explored among young adult cancer survivors (YACSs), and more knowledge is needed to develop targeted interventions for YACSs with CF. The present study aimed to investigate the prevalence of CF and associated factors in YACSs. Also, the change of fatigue with time was explored. MATERIAL AND METHODS: The present cross-sectional study is part of a nation-wide population based survey of Norwegian survivors of cancer in childhood, adolescence, and young adulthood (The NOR-CAYACS study).YACSs diagnosed at the age of 19-39 years with breast can...
Source: Acta Oncologica - Category: Cancer & Oncology Authors: Tags: Acta Oncol Source Type: research
In conclusion, 96.5% of patients with hematologic malignancies have adequate tissue for comprehensive genomic profiling. Most patients had unique molecular signatures, and 75% had alterations that may be pharmacologically tractable with gene- or immune-targeted agents.
Source: Cancers - Category: Cancer & Oncology Authors: Tags: Article Source Type: research
Conclusion: While providing potential clinical benefit, CAR T cell therapy utilizes resources across the therapeutic spectrum, and increasing use of this therapeutic modality can create challenges in institutional resource capacity. Identifying these resources will allow for better care delivery and allocation of funds. Further refinement of CAR T cell products and improvements in CAR T cell-related toxicity management may permit safer delivery of this therapy and reduce costs per patient. Additional analysis of resource utilization among patients treated with commercial CAR T cell products, as well as comparison with alte...
Source: Blood - Category: Hematology Authors: Tags: 902. Health Services Research-Malignant Diseases: Overuse, Costs, and Utilization of Health Services Source Type: research
BACKGROUND: Recipients of allogeneic HSCT experience significant short- and long-term healthcare burdens with differing general patterns of late effects between graft sources. For example, recipients of peripheral blood stem cell (PBSC) grafts benefit from more rapid engraftment after transplant as compared to bone marrow (BM) or umbilical cord blood (UCB), but experience a greater risk of chronic graft-versus-host disease (cGVHD) at later time points after HSCT. Little data exist regarding healthcare burden beyond first year of allogeneic HSCT, limiting our understanding of the long-term impact for each graft source.METHO...
Source: Blood - Category: Hematology Authors: Tags: 904. Outcomes Research-Malignant Conditions: Outcomes in Myeloid Malignancies and Allogeneic Stem Cell Transplant Source Type: research
This study was approved by the institutional review board of Komaki City Hospital. We assessed the prevalence and trends of multiple measures of intensive EOL care established in the peer-reviewed literature. Intensive EOL care was defined as the occurrence of at least one of the following acts: 1) cardiopulmonary resuscitation (CPR) in the last 30 days of life, 2) intubation in the last 30 days of life, 3) intensive care unit (ICU) admission in the last 30 days of life, 4) chemotherapy use within the last 14 days of life, 5) receiving red cell transfusions within the 7 days before death, and 6) receiving platelet transfus...
Source: Blood - Category: Hematology Authors: Tags: 902. Health Services Research-Malignant Diseases: Poster I Source Type: research
The first two authors and last two authors contributed equally.Genome-wide association studies (GWAS) have identified risk loci for Acute Lymphoblastic Leukemia (ALL), Chronic Lymphoblastic Leukemia (CLL) and Non-Hodgkin Lymphoma, however an Acute Myeloid Leukemia (AML) GWAS has not been published to date. We performed a GWAS to identify AML and Myelodysplastic Syndrome (MDS) risk loci using a nested case-control study design in the DISCOVeRY-BMT cohorts which includes almost 2000 AML and MDS patients as cases and 2813 unrelated donors as controls.Genotyping was performed using the Illumina Human OmniExpress BeadChip and i...
Source: Blood - Category: Hematology Authors: Tags: 617. Acute Myeloid Leukemia: Biology, Cytogenetics, and Molecular Markers in Diagnosis and Prognosis: Poster I Source Type: research
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