Anti-HLA immunization of patients qualified for lung transplantation – Single center study

Background and Objectives: Testing for anti-human leukocyte antigen (HLA) antibodies both before and after transplantation is of fundamental significance for the success of lung transplantation. The aim of this study was the evaluation of anti-HLA immunization of patients before and after lung transplant who were subjected to qualification and transplantation. Materials and Methods: Prior to the transplantation, patients were examined for the presence of IgG class anti-HLA antibodies (anti-human leukocyte antigen), the so-called panel-reactive antibodies (PRA), using the flow cytometry method. After the transplantation, the class and specificity of anti-HLA antibodies (also IgG) were determined using Luminex. Results: In the group examined, the PRA results ranged from 0.1% to 66.4%. Low (30%) and average (30–80%) immunization was found in only 9.7% of the group examined. Presence of class I anti-HLA antibodies with MFI (mean fluorescence intensity) greater than 1000 was found in 42.7% of the patients examined, while class II anti-HLA antibodies were found in 38.4%. Immunization levels before and after the transplantation were compared. In 10.87% of patients, DSA antibodies (donor-specific antibodies) with MFI of over 1000 were found. Conclusions: It seems that it is possible to confirm the correlation between pre- and post-transplantation immunization with the use of the two presented methods of determining IgG class anti-HLA antibodies by increasing the size of the group studied and conducting a long-term observation thereof.

show abstract

“…0; max. 53), and vPRA (virtual panel-reactive antibody) calculated according to HLA ABDR (>2000 MFI cut-off) was 8% [12,13].…”

Section: Discussionmentioning

confidence: 99%

“…The study group consisted of 152 people, of whom 89 (58.6%) were men. In that group, 9 people were below the age of 18 (age range of [13][14][15][16][17] and most of them were male (8 people, 88.9%). In all the analyses, underage people were not included as a separate group.…”

Section: Patients and Samplesmentioning

confidence: 99%