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  2. Thymus transplantation - Wikipedia

    en.wikipedia.org/wiki/Thymus_transplantation

    Second, a thymus transplantation can cause a non-donor T cell-related GVHD because the recipients thymocytes would use the donor thymus cells as models when going through the negative selection to recognize self-antigens, and could therefore still mistake own structures in the rest of the body for being non-self. This is a rather indirect GVHD ...

  3. Graft-versus-host disease - Wikipedia

    en.wikipedia.org/wiki/Graft-versus-host_disease

    The acute or fulminant form of the disease (aGvHD) is normally observed within the first 10 to 100 days post-transplant, [9] [10] and is a major challenge to transplants owing to associated morbidity and mortality. [11] About one-third to one-half of allogeneic transplant recipients will develop acute GvHD. [10]

  4. Transfusion-associated graft-versus-host disease - Wikipedia

    en.wikipedia.org/wiki/Transfusion-associated...

    The incidence of TA-GvHD in immunocompromised patients receiving blood transfusions is estimated to be 0.1–1.0%, and mortality around 80–90%. Mortality is higher in TA-GvHD than in GvHD associated with bone marrow transplantation , where the engrafted lymphoid cells in the bone marrow are of donor origin (in autotransplant) and therefore ...

  5. Graft-versus-tumor effect - Wikipedia

    en.wikipedia.org/wiki/Graft-versus-tumor_effect

    This will occur with most of the non-related donor. When transplanting HSC during AML, T-cells are usually selectively depleted to prevent GvHD while NK cells help with the GvL effect which prevent leukemia relapse. When using non-depleted T-cell transplant, cyclophosphamide is used after transplantation to prevent GvHD or transplant rejection.

  6. Severe combined immunodeficiency - Wikipedia

    en.wikipedia.org/wiki/Severe_combined...

    Haploidentical bone marrow transplants require the donor marrow to be depleted of all mature T cells to avoid the occurrence of graft-versus-host disease (GVHD). [16] Consequently, a functional immune system takes longer to develop in a patient who receives a haploidentical bone marrow transplant compared to a patient receiving a matched ...

  7. Congenital athymia - Wikipedia

    en.wikipedia.org/wiki/Congenital_athymia

    T cell maturation and selection depend on the thymus, and newborns born without a thymus experience severe immunodeficiency. [2] A significant T cell deficiency , recurrent infections, susceptibility to opportunistic infections , and a tendency to develop autologous graft-versus-host disease (GVHD) or, in the case of complete DiGeorge syndrome ...

  8. ICD-10 Procedure Coding System - Wikipedia

    en.wikipedia.org/wiki/ICD-10_Procedure_Coding_System

    The ICD-10 Procedure Coding System (ICD-10-PCS) is a US system of medical classification used for procedural coding.The Centers for Medicare and Medicaid Services, the agency responsible for maintaining the inpatient procedure code set in the U.S., contracted with 3M Health Information Systems in 1995 to design and then develop a procedure classification system to replace Volume 3 of ICD-9-CM.

  9. Transplantable organs and tissues - Wikipedia

    en.wikipedia.org/wiki/Transplantable_organs_and...

    Thymus transplantation can be used to treat infants with DiGeorge syndrome, which results in an absent or hypoplastic thymus, in turn causing problems with the immune system's T-cell mediated response. It is exclusively used in people with complete DiGeorge anomaly, which are entirely athymic.