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논문 기본 정보

자료유형
학술저널
저자정보
Ju Young Kim (Eulji University School of Medicine) Chur Woo You (Eulji University School of Medicine)
저널정보
대한혈액학회 Blood Research Blood Research Vol.54 No.3
발행연도
2019.1
수록면
204 - 209 (6page)

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초록· 키워드

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BackgroundRisk factors for the development of inhibitors in previously untreated patients (PUPs) have been reported; this is not the case in previously treated patients (PTPs) owing to fewer studies. Risk factors may differ for the development of PTP versus PUP inhibitors. We aimed to identify risk factors for PTP inhibitor development.MethodsParticipants were patients at a hemophilia treatment center in Korea with current or past history of factor VIII or factor IX alloantibodies. Observed inhibitors were classified as PUP or PTP inhibitors based on the cumulative number of exposure days. We compared the type and severity of hemophilia, mutation type, and family history of inhibitor between PUPs and PTPs. Events within 3 months before the first inhibitor detection, such as change of the factor concentrate used, short-term high exposure or continuous infusion of factor concentrate, history of surgery, infection, diagnosis of cancer, use of immunosuppressive or immunomodulator agents, and vaccination were compared between PUPs and PTPs.ResultsWe observed 5 PUP inhibitors and 5 PTP inhibitors in 115 patients with hemophilia A. Events that might be related to the development of inhibitors within 3 months prior to the first inhibitor detection were observed in all 5 PTPs. On the contrary, no such events were observed in any PUPs. The observed events included a change in the factor concen-trate used, subsequent chemotherapy, and short-term high exposure to factor concen-trates for controlling hemorrhage and surgeries.ConclusionOur results suggest a greater role of nongenetic factors in PTP inhibitor development.

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