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In unrelated allogeneic hematopoietic cell transplantation (allo-HCT), older and/or HLA-mismatched donors are known risk factors for survival outcomes. In healthy individuals, cytomegalovirus (CMV) seropositivity is associated with impaired adaptive immune systems. We assessed whether the adverse effects of donor risk factors are influenced by the donor CMV serostatus.
View Article and Find Full Text PDFNeuraminidase Antibody Response to Homologous and Drifted Influenza A Viruses After Immunization with Seasonal Influenza Vaccines.
Vaccines (Basel)
November 2024
FSBSI 'Institute of Experimental Medicine', 197022 Saint Petersburg, Russia.
Background/objectives: Humoral immunity directed against neuraminidase (NA) of the influenza virus may soften the severity of infection caused by new antigenic variants of the influenza viruses. Evaluation of NA-inhibiting (NI) antibodies in combination with antibodies to hemagglutinin (HA) may enhance research on the antibody response to influenza vaccines.
Methods: The study examined 64 pairs of serum samples from patients vaccinated with seasonal inactivated trivalent influenza vaccines (IIVs) in 2018 according to the formula recommended by the World Health Organization (WHO) for the 2018-2019 flu season.
HLA and Non-HLA Factors for Donor Selection in Hematopoietic Stem Cell Transplantation with Post-Transplant Cyclophosphamide GvHD Prophylaxis.
Cells
December 2024
Cleveland Clinic, Allogen, Pathology & Laboratory Medicine Institute, Cleveland, OH 44195, USA.
Human leukocyte antigen (HLA) mismatches in stem cell transplantation can be well-tolerated with the use of post-transplant cyclophosphamide (PTCy) for graft-versus-host-disease (GvHD) prophylaxis. Haploidentical (Haplo) and HLA-mismatched unrelated donors become acceptable donors. This review focuses on Haplo and unrelated donor selection in the context of PTCy-transplant for hematological malignancy, in comparison with conventional GvHD prophylaxis.
View Article and Find Full Text PDFAssociation between somatic microsatellite instability, hypermutation status, and specific T cell subsets in colorectal cancer tumors.
Front Immunol
January 2025
Public Health Sciences Division, Fred Hutchinson Cancer Center, Seattle, WA, United States.
Background: Microsatellite instability-high (MSI-high) tumors comprise ~15% of sporadic colorectal cancers (CRC) and are associated with elevated T cell infiltration. However, the universality of this response across T cell subtypes with distinct functions is unknown.
Methods: Including 1,236 CRC tumors from three observational studies, we conducted T cell profiling using a customized 9-plex (CD3, CD4, CD8, CD45RA, CD45RO, FOXP3, KRT, MKI67, and DAPI) multispectral immunofluorescence assay.
Outcomes of Hematopoietic Stem Cell Transplantation in 5 Patients with Autosomal Recessive RIPK1-Deficiency.
J Clin Immunol
January 2025
Population Health Sciences Institute, Newcastle University, Newcastle-Upon-Tyne, UK.
Receptor Interacting Serine/Threonine Kinase 1 (RIPK1) is widely expressed and integral to inflammatory and cell death responses. Autosomal recessive RIPK1-deficiency, due to biallelic loss of function mutations in RIPK1, is a rare inborn error of immunity (IEI) resulting in uncontrolled necroptosis, apoptosis and inflammation. Although hematopoietic stem cell transplantation (HSCT) has been suggested as a potential curative therapy, the extent to which disease may be driven by extra-hematopoietic effects of RIPK1-deficiency, which are non-amenable to HSCT, is not clear.
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