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Folques C, de Sá B, Agostinho M, do Agro J, Martinho A, Rangel G, Marques J, Azevedo J. Combined Neonatal Alloimmune Neutropenia and Thrombocytopenia in Dizygotic Twins Conceived After Oocyte Donation. Cureus 2023; 15:e35950. [PMID: 37050990 PMCID: PMC10085481 DOI: 10.7759/cureus.35950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/09/2023] [Indexed: 04/14/2023] Open
Abstract
Neonatal alloimmune thrombocytopenia (NAIT) and neonatal alloimmune neutropenia (NAIN) may have severe consequences in the neonatal period. We report two dizygotic twins conceived after donated oocytes, suffering NAIT and NAIN in the context of alloantibodies to human platelet antigens (anti-HPA-5b) and human leukocyte antigens (anti-HLA class I). Genotyping demonstrated paternal homozygosity for HPA-5a, while the neonates were heterozygous for HPA-5b.
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Affiliation(s)
- Carolina Folques
- Pediatric Hematology Unit, Department of Clinical Hematology, Hospital and University Centre of Coimbra, Children's Hospital of Coimbra, Coimbra, PRT
- Department of Pediatrics, Leiria Hospital Centre, Leiria, PRT
| | - Beatriz de Sá
- Department of Pediatrics, Leiria Hospital Centre, Leiria, PRT
| | | | - João do Agro
- Department of Pediatrics, Leiria Hospital Centre, Leiria, PRT
| | - António Martinho
- Blood and Transplant Center of Coimbra, Instituto Português do Sangue e Transplantação, Coimbra, PRT
| | - Gabriela Rangel
- Blood and Transplant Center of Porto, Instituto Português do Sangue e Transplantação, Porto, PRT
| | - Joana Marques
- Blood and Transplant Center of Porto, Instituto Português do Sangue e Transplantação, Porto, PRT
| | - Joana Azevedo
- Pediatric Hematology Unit, Department of Clinical Hematology, Hospital and University Centre of Coimbra, Children's Hospital of Coimbra, Coimbra, PRT
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Wang J, You X, He Y, Hong X, He J, Tao S, Zhu F. Simultaneous genotyping for human platelet antigen systems and HLA-A and HLA-B loci by targeted next-generation sequencing. Front Immunol 2022; 13:945994. [PMID: 36263028 PMCID: PMC9575554 DOI: 10.3389/fimmu.2022.945994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 08/30/2022] [Indexed: 11/13/2022] Open
Abstract
In order to treat the alloimmunization platelet transfusion refractoriness (PTR), human leukocyte antigen (HLA)-type and/or human platelet antigen (HPA)-type matched platelets between donors and patients are usually used. Therefore, genotyping of HLA-A and HLA-B loci, as well as HPA systems, for donors and patients, is of great significance. However, there is a rare report of genotyping for HLA-A and HLA-B loci as well as HPA systems at the same time. In this study, a high-throughput method for simultaneous genotyping of HLA-A and HLA-B loci, as well as HPA genotyping, was developed. A RNA capture probe panel was designed covering all exon sequences of the GP1BA, GP1BB, ITGA2, CD109, ITGB3, and ITGA2B genes and HLA-A and HLA-B loci. The HLA-A, HLA-B, and 34 HPA systems were genotyped using a targeted next-generation sequencing (NGS) method. The genotypes of the HLA-A and HLA-B loci, as well as the HPA, were assigned based on the nucleotides in the polymorphism sites. Using the NGS method, 204 unrelated blood specimens were successfully genotyped for all 34 HPA systems as well as HLA-A and HLA-B loci. The accuracy of the NGS method was 100%. Only HPA-2, HPA-3, HPA-5, HPA-6w, HPA-15, and HPA-21w showed polymorphism with frequencies of 0.9412, 0.6863, 0.9853, 0.9779, 0.4314, and 0.9951 for a allele, respectively. Thirty-two single nucleotide variants (SNVs) were detected. Of them, 12 SNVs can lead to amino acid change. HLA-A*11:01 and HLA-B*46:01 are the most common alleles for HLA-A and HLA-B loci. A targeted next-generation sequencing method for simultaneously genotyping HPA systems and HLA-A and HLA-B loci was first established, which could be used to create a database of HLA-typed and/or HPA-typed unrelated donors.
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Affiliation(s)
- Jielin Wang
- Human Leukocyte Antigen Typing Laboratory, Blood Center of Zhejiang Province, Hangzhou, China
- Human Leukocyte Antigen Typing Laboratory, Key Laboratory of Blood Safety Research, Hangzhou, China
| | - Xuan You
- Human Leukocyte Antigen Typing Laboratory, Blood Center of Zhejiang Province, Hangzhou, China
- Human Leukocyte Antigen Typing Laboratory, Key Laboratory of Blood Safety Research, Hangzhou, China
| | - Yanmin He
- Human Leukocyte Antigen Typing Laboratory, Blood Center of Zhejiang Province, Hangzhou, China
- Human Leukocyte Antigen Typing Laboratory, Key Laboratory of Blood Safety Research, Hangzhou, China
| | - Xiaozhen Hong
- Human Leukocyte Antigen Typing Laboratory, Blood Center of Zhejiang Province, Hangzhou, China
- Human Leukocyte Antigen Typing Laboratory, Key Laboratory of Blood Safety Research, Hangzhou, China
| | - Ji He
- Human Leukocyte Antigen Typing Laboratory, Blood Center of Zhejiang Province, Hangzhou, China
- Human Leukocyte Antigen Typing Laboratory, Key Laboratory of Blood Safety Research, Hangzhou, China
| | - Sudan Tao
- Human Leukocyte Antigen Typing Laboratory, Blood Center of Zhejiang Province, Hangzhou, China
- Human Leukocyte Antigen Typing Laboratory, Key Laboratory of Blood Safety Research, Hangzhou, China
- *Correspondence: Faming Zhu, ; Sudan Tao,
| | - Faming Zhu
- Human Leukocyte Antigen Typing Laboratory, Blood Center of Zhejiang Province, Hangzhou, China
- Human Leukocyte Antigen Typing Laboratory, Key Laboratory of Blood Safety Research, Hangzhou, China
- *Correspondence: Faming Zhu, ; Sudan Tao,
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