The Transplant Immunology Laboratory performs investigations in determination of donor and recipient compatibility for transplantation. These investigations are of two main types – ‘tissue typing’ which facilitates donor-recipient matching and serum screening/crossmatching, which determines recipient sensitisation against putative donor antigens. From results of these tests advice will be given to clinical colleagues regarding progression of patients to transplantation and on their post-transplant management.
A copy of the Service Prospectus is available on request from the laboratory.
Patient information pamphlets are available on request for a range of topics, including renal patients, renal donors, HSCT patients, HSCT donors and disease association (see Transplant Immunology Useful Information).
The Transplant Laboratory service is open from 8:30am to 5:00pm Monday to Friday.
There is an out of hours laboratory service for deceased donor transplantation ONLY.
The laboratory is located at St. James’s University Hospital.
Transplant Immunology Laboratory
Specialist Laboratory Medicine
Level 09, Gledhow Wing
St James’s University Hospital
Beckett Street
Leeds, LS9 7TF
Transplant Immunology enquiries
Out of hours enquiries should be made via the Leeds Teaching Hospitals switchboard 0113 243 2799.
Transplant Immunology Contacts
Consultant Clinical Scientist and Head of Service
Brendan Clark
[email protected]
Principal Clinical Scientist
Katherine Mounsey
[email protected]
Principal Clinical Scientist
Neil Marsden
[email protected]
Transplant Immunology Useful Information
Transplant Immunology Useful Information
transplant-immunology-laboratory-prospectus (1MB)
Solid Organ Transplantation
HLA (Human Leukocyte Antigens) are expressed on the surface of cells and are involved in the recognition of self and non-self. They are used when matching solid organ transplant recipients with potential donors in accordance with the NHS-Blood and Transplant (NHS-BT) national allocation scheme. DNA is extracted from whole blood and transplant recipients and potential donors are typed for HLA Class I and Class II antigens. Recipients are also screened for HLA antibodies in their serum. Once all tests have been performed the laboratory will complete the appropriate parts of the NHS-BT registration form to register the recipient for a solid organ transplant.
Kidney Transplant Patient Information Leaflet (430kB)
Liver Transplant Patient Information Leaflet (573kB)
Kidney Transplant Donor Information Leaflet (430kB)
Liver Transplant Donor Information Leaflet (574kB)
Haematopoietic Stem Cell Transplantation (HSCT)
Close matches at the DNA level for HLA typing are required for HSCT to minimise the chances of Graft vs Host Disease (GvHD). Patients are HLA typed to second field for Class I and Class II antigens using molecular techniques and are screened for HLA antibodies. Family donors are typed at Class I and if matched are Class II typed and ABO blood grouped. Volunteer Unrelated Donor (VUD) searches are only performed at the request of the HSCT Programme Director.
HSCT Patient Information Leaflet (430kB)
HSCT Donor Information Leaflet (428kB)
HLA Antibody Screening
Transplant recipients can form HLA antibodies in their serum following sensitising events like blood or blood product transfusion, solid organ transplantation and pregnancy. It is essential that patients on the NHS-BT transplant waiting list are monitored every 3 months, or following a potential sensitising event. All changes to the recipient sensitisation status are reported to NHS-BT by the laboratory.
Crossmatching
Crossmatching is a test performed prior to transplantation to exclude potential donors expressing HLA to which the recipient has formed antibodies. This minimises the risk of hyperacute rejection of the transplanted organ.
Disease and Drug Hypersensitivity Associations
Certain diseases or drug hypersensitivity conditions have been shown to have positive or negative association with certain HLA antigens or alleles. This is quantified as a relative risk. Results are reported as positive or negative for the associated allele.