Accurate white blood cell differential by Alinity hq: A comparison with flow cytometry and manual differential.

Introduction: White blood cell (WBC) differential by flow cytometry can report a six-part WBC differential and enumerate blasts. Some modern hematology analyzers are also able to provide a six-part WBC differential (including immature granulocytes). Our goal was to compare the WBC differential obtained by the Abbott Alinity hq hematology analyzer to an 8-color single-tube flow cytometry method and to manual WBC differential.

Reproducible diagnosis of chronic lymphocytic leukemia by flow cytometry: An European Research Initiative on CLL (ERIC) & European Society for Clinical Cell Analysis (ESCCA) Harmonisation project.

The diagnostic criteria for CLL rely on morphology and immunophenotype. Current approaches have limitations affecting reproducibility and there is no consensus on the role of new markers. The aim of this project was to identify reproducible criteria and consensus on markers recommended for the diagnosis of CLL.

Validation of cell-based fluorescence assays: practice guidelines from the ICSH and ICCS - part IV - postanalytic considerations.

Flow cytometry and other technologies of cell-based fluorescence assays are as a matter of good laboratory practice required to validate all assays, which when in clinical practice may pass through regulatory review processes using criteria often defined with a soluble analyte in plasma or serum samples in mind. Recently the U.S.

Persistence and efficacy of second generation CAR T cell against the LeY antigen in acute myeloid leukemia.

In a phase I study of autologous chimeric antigen receptor (CAR) anti-LeY T-cell therapy of acute myeloid leukemia (AML), we examined the safety and postinfusion persistence of adoptively transferred T cells. Following fludarabine-containing preconditioning, four patients received up to 1.3 × 109 total T cells, of which 14-38% expressed the CAR.

A risk-adapted protocol for delayed administration of filgrastim after high-dose chemotherapy and autologous stem cell transplantation.

Introduction: The routine use of recombinant human granulocyte-colony stimulating factor (rhG-CSF) after high-dose chemotherapy and autologous stem cell transplantation (auto-SCT) is associated with increased costs. We prospectively explored a strategy that used prophylactic delayed filgrastim only in patients with risk factors.

Patients And Methods: This sequential cohort analysis compared the outcomes of consecutive patients, treated on the risk-adapted protocol (RAP) (risk factors: prior febrile neutropenia; age >60 years; and CD34+ cell infused dose of <2 × 10(6/)/kg), who received filgrastim from day +6 after auto-SCT with a historical cohort (historical day-1 cohort [HD1]), who received filgrastim from day +1.

Peripheral blood CD34+ cell enumeration as a predictor of apheresis yield: an analysis of more than 1,000 collections.

The role of the peripheral blood (PB) CD34(+) cell count in predicting the CD34(+) cell yield in hematopoietic progenitor cell apheresis collections is well established. However, sometimes unexpectedly poor CD34(+) cell yields are obtained. To determine the effect, if any, of a range of factors on the ability of the PB CD34(+) count to predict collection CD34(+) cell count, we performed a retrospective analysis on consecutive hematopoietic progenitor cell apheresis collections between 2004 and 2008.

Extracorporeal photopheresis for the treatment of Sézary syndrome using a novel treatment protocol.

Various studies have reported that extracorporeal photopheresis is effective in producing meaningful responses in patients with Sézary syndrome. A single-center, 5-year retrospective analysis was performed on our patients with Sézary syndrome who received extracorporeal photopheresis using a novel protocol. Thirteen patients were treated with extracorporeal photopheresis consistently for a minimum of 2 months.

Negative selection of chronic lymphocytic leukaemia cells using a bifunctional rosette-based antibody cocktail.

Background: High purity of tumour samples is a necessity for accurate genetic and expression analysis and is usually achieved by positive selection in chronic lymphocytic leukaemia (CLL).

Results: We adapted a bifunctional rosette-based antibody cocktail for negative selection of B-cells for isolating CLL cells from peripheral blood (PB). PB samples from CLL patients were split into aliquots.

Patients with multiple myeloma treated with thalidomide: evaluation of clinical parameters, cytokines,angiogenic markers, mast cells and marrow CD57+ cytotoxic T cells as predictors of outcome.

Background And Objectives: In vitro studies suggest that thalidomide has an immunoregulatory role and alters the marrow microenvironment. We assessed laboratory and clinical parameters in patients with myeloma treated with thalidomide as potential prognostic markers and looked for changes with therapy.

Design And Methods: Seventy-five patients with relapsed/refractory myeloma received thalidomide in a phase II trial.