1. Umbilical Cord Blood Transplantation for Myelodysplastic Syndromes with Donor-Specific Anti-HLA Antibodies against HLA-DP.
- Author
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Yusuke Uchibori, Koichi Onodera, Yasushi Onishi, Hiroka Komatsu, Kenta Takenaka, Yoshihiro Narumi, Tatsuya Watanabe, Hiroshi Nakamura, Kazuki Sakurai, Kazuki Hashimoto, Kyoko Inokura, Satoshi Ichikawa, Noriko Fukuhara, Hisayuki Yokoyama, and Hideo Harigae
- Abstract
The presence of donor-specific anti-human leukocyte antigen (HLA) antibodies (DSAs) against anti-HLA-A, -B, -C, and -DRB1 in HLA-mismatched hematopoietic stem cell transplantation (HSCT) is associated with graft failure. DSAs against HLA-A, -B, -C, and -DRB1 with a mean fluorescence intensity (MFI) of greater than > 1,000 was shown to increase the risk of graft failure in single-unit umbilical cord blood transplantation (UCBT). Nevertheless, the impact of DSAs against HLA-DP or -DQ on transplantation outcomes is not fully understood. In this report, we present a case of UCBT in a patient with myelodysplastic syndrome who was positive for DSAs against HLA-DP with MFI of 1,263 before UCBT but successfully achieved neutrophil engraftment. If HLA-DP or -DQ is mismatched in UCBT, evaluating DSAs against HLA-DP or -DQ is crucial to avoid graft failure. However, the criteria for DSAs against HLA-A, -B, -C, and -DRB1 may not be directly applicable to those against HLA-DP or -DQ. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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