PMID- 24164556 OWN - NLM STAT- MEDLINE DCOM- 20140926 LR - 20151119 IS - 1543-2165 (Electronic) IS - 0003-9985 (Linking) VI - 138 IP - 8 DP - 2014 Aug TI - The presence of anti-HLA donor-specific antibodies in lung allograft recipients does not correlate with C4d immunofluorescence in transbronchial biopsy specimens. PG - 1053-8 LID - 10.5858/arpa.2013-0539-OA [doi] AB - CONTEXT: C4d immunofluorescence (IF) is a surrogate for development of donor-specific antibodies (DSAs) against human leukocyte antigen (HLA) class I and II antigens in kidney and heart biopsy specimens for monitoring of antibody-mediated (humoral) allograft rejection (AMR). Use of C4d IF in monitoring of lung allografts has shown conflicting results. OBJECTIVE: To determine if C4d IF can be used as a reliable marker for AMR and if it correlates with the presence of DSAs and histologic findings on biopsy. DESIGN: All transbronchial biopsies in lung allograft recipients, performed at our institution in a 3-year period, were reviewed. A cohort of 92 patients with 110 corresponding biopsies met the inclusion criteria of (1) having a resulted DSA within 2 weeks of biopsy and (2) having C4d immunofluorescence studies performed and confirmed. RESULTS: Twenty-nine patients (31.5%) were positive for DSAs and 63 patients (68.5%) did not develop DSAs. Positive C4d capillary IF was seen in 18 of 110 total biopsy specimens (16.4%). Eight of these biopsy samples were from patients positive for DSAs and 10 were from patients negative for DSAs. The correlation coefficient between the presence of DSAs and C4d IF was 0.1628 (P = .09). CONCLUSIONS: A significant proportion of DSA-positive patients had negative C4d IF results and frequently have no histologic changes on biopsy specimens. DSA-negative patients can be positive for C4d and may show the same histologic changes as reported for DSA-positive patients. Diagnosis of AMR in lung may require a collaborative approach combining clinical data, DSA status, and histology. FAU - Roberts, Jordan A AU - Roberts JA AD - From the Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, Texas (Drs Roberts, Barrios, Cagle, Ge, Takei, Haque, Burns, Land, Dilioglou, and Bernard); and the Department of Pathology, Weill Cornell Medical College of Cornell University, Houston, Texas (Drs Barrios, Cagle, Ge, and Takei). FAU - Barrios, Roberto AU - Barrios R FAU - Cagle, Philip T AU - Cagle PT FAU - Ge, Yimin AU - Ge Y FAU - Takei, Hidehiro AU - Takei H FAU - Haque, Abida K AU - Haque AK FAU - Burns, Kevin M AU - Burns KM FAU - Land, Geoffrey A AU - Land GA FAU - Dilioglou, Smaroula AU - Dilioglou S FAU - Bernard, David W AU - Bernard DW LA - eng PT - Journal Article DEP - 20131028 PL - United States TA - Arch Pathol Lab Med JT - Archives of pathology & laboratory medicine JID - 7607091 RN - 0 (Biomarkers) RN - 0 (HLA Antigens) RN - 0 (Isoantibodies) RN - 0 (Peptide Fragments) RN - 80295-50-7 (Complement C4b) RN - 80295-52-9 (complement C4d) SB - IM MH - Adult MH - Aged MH - Biomarkers/metabolism MH - Biopsy MH - Bronchi/immunology/*metabolism/pathology MH - Cohort Studies MH - Complement C4b/*metabolism MH - Female MH - Fluorescent Antibody Technique, Direct MH - Follow-Up Studies MH - HLA Antigens/*metabolism MH - Hospitals, Religious MH - *Host vs Graft Reaction MH - Humans MH - *Immunity, Humoral MH - Isoantibodies/*metabolism MH - Lung Transplantation/*adverse effects MH - Male MH - Middle Aged MH - Peptide Fragments/*metabolism MH - Texas MH - Transplantation, Homologous EDAT- 2013/10/30 06:00 MHDA- 2014/09/27 06:00 CRDT- 2013/10/30 06:00 PHST- 2013/10/30 06:00 [entrez] PHST- 2013/10/30 06:00 [pubmed] PHST- 2014/09/27 06:00 [medline] AID - 10.5858/arpa.2013-0539-OA [doi] PST - ppublish SO - Arch Pathol Lab Med. 2014 Aug;138(8):1053-8. doi: 10.5858/arpa.2013-0539-OA. Epub 2013 Oct 28.